Laser pointed at a black paper is what type of energy dispersion, transmitted or opaque?

Answers

Answer 1

Dispersion types include chromatic, material, waveguide, and polarisation mode dispersion.

What is dispersion in the transmitted optical signal?The spreading out of a light pulse in time as it travels down the fibre is known as dispersion. Waveguide, material, and model dispersion are all types of dispersion in optical fibre. Below, each category is covered in more detail.White light dispersion occurs when white light passes through a glass prism and separates into its seven individual hues. The colours that are discernible include violet, indigo, blue, green, yellow, orange, and red.There are three types of dispersion in an optical medium, such fibre: chromatic, modal, and material. The emitter's spectral breadth causes chromatic dispersion. The number of various wavelengths that the LED or laser emits depends on its spectral width.

To learn more about Dispersion refer to:

https://brainly.com/question/30215065

#SPJ1


Related Questions

H. If you had 64 amu of ch4, how many molecules would this be? i. If you had 64 g of ch4, how many moles would this be?

Answers

The number of molecules and number of moles of [tex]CH_{4}[/tex] is 4 moles and 24.088×[tex]10^{23}[/tex] molecules.

Calculation,

Atomic mass of carbon is 12 u and H is 1 u

So, molar mass of [tex]CH_{4}[/tex] = 12 + 1×4 = 16 u = 16 g/mole

Number of moles = given mass / molar mass = 64 g/ 16 g/mol = 4 moles

1 moles of substance contains 6 .022 ×[tex]10^{23}[/tex] molecules.

So, number of molecules in 3 moles of methane = 4×6.022 ×[tex]10^{23}[/tex]  

number of molecules in 3 moles of methane  = 24.088×[tex]10^{23}[/tex] molecules.

learn about moles

https://brainly.com/question/26416088

#SPJ4

A generic element, Q, has two isotopes, 195Q and 190Q, and an average atomic mass of 191.86 amu. The natural abundances of the two isotopes are 38% 195Q and 62% 190Q. The isotopic mass of 195Q is 194.96 amu. What is the isotopic mass of 190Q

Answers

A generic element, Q, has two isotopes, 195Q and 190Q, and an average atomic mass of 191.86 amu. The natural abundances of the two isotopes are 38% 195Q and 62% 190Q. The isotopic mass of 195Q is 194.96 amu.  the isotopic mass of 190Q is 186.80.

What do you mean by Isotopes?

Isotopes are two or more atom types that share the same atomic number (number of protons in their nuclei), location in the periodic table, and chemical element but have distinct nucleon numbers (mass numbers) as a result of having a different number of neutrons in their nuclei. Although the chemical properties of each isotope of a given element are nearly identical, they differ in their atomic weights and physical characteristics.

191.86 =(62% x 194.96 + 38% x  X )

where, X is the mass of other Isotope.

X     = (191.86  - 120.8752)/0 .38

       = 186.80

Parent and Daughter Isotopes

The initial radioisotope and the isotope that results from radioactive decay may not be the same. The atoms created by the reaction are known as daughter isotopes, whereas the original isotope is known as the parent isotope. It's possible to get different kinds of daughter isotopes.

As an illustration, the uranium atom is the parent isotope and the thorium atom is the daughter isotope when U-238 decays into Th-234.

Learn more about Isotopes here:-

https://brainly.com/question/27407210

#SPJ4

6) What is the pH of a solution with [H3O+] = 1 × 10-9 M?
A) 1.0 × 10-5
B) -9.0
C) 5.0
D) -5.0
E) 9.0

Answers

Answer:

E) 9.0

Explanation:

pH = -log [1×10^-9] = 9

The answer is E (9.0)

The combustion reaction of propane is described by the reaction.
C3H8 +502 + 4H₂O + 3C0₂.
How many moles of O₂ are required to generate 3 moles of CO₂?

Answers

Answer:

[tex]\huge\boxed{\sf 5\ moles\ of\ oxygen}[/tex]

Explanation:

Chemical Reaction:

[tex]C_3H_8+5O_2 \longrightarrow 4H_2O+3CO_2[/tex]

From the reaction, we can say that,

1 mole of propane and 5 moles of oxygen produce 4 moles of water and 3 moles of carbon dioxide.

So, to generate 3 mole of carbon dioxide, 5 moles of oxygen are required. (as shown in the chemical reaction!)

[tex]\rule[225]{225}{2}[/tex]

7. A spontaneous reaction occurs when the sign of free energy IS
O A. positive.
O B. zero,
• C. negative.
O D. neutral.

Answers

Answer:

positive

Explanation:

1. You have learned that alkyl iodides may be prepared by SN2 replacement of other leaving groups, or by treatment of alcohols or ethers with co centrated hydriodic acid (HI). A milder method for preparation of alkyl iodides from alcohols is shown below:

Answers

Imidazole's cyclic structure is aromatic and the lone pair present at the N₁ atom available for donation. hence, according to question N₁ is the most basic atom in the structure.

What is resonating structure?Two π bonds (between C₂-C₃ and N₁-C₅), as well as one lone pair on N₄, can interact with one another to generate a delocalized π system in the cyclic structure.This delocalization is intriguing since it has the same number of delocalized electrons as benzene—six.As a result, imidazole, like benzene, has a closed, delocalized ring with six π electrons. So, like benzene, it is regarded as an aromatic chemical with resonance stability.N₄ is neutral since it cannot be donated because it needs to use its lone pair to be aromatic.On the other hand, N₁ already forms a π connection, which helps the system become delocalized.N₁ is sp² hybridized and has a trigonal planar basic form. Its lone pair cannot communicate with the delocalized π system since it is pointed away from the cyclic structure.

Know more about Resonating structure

https://brainly.com/question/8155254

#SPJ4

You have two buffered solutions. Buffered solution 1 consists of 5.0 M HOAc and 5.0 M NaOAc; buffered solution 2 is made of 0.050 M HOAc and 0.050 M NaOAc. How do the pHs of the buffered solutions compare

Answers

The pH of buffered solution is:

The two buffered solutions have 'equal' pH values.

Comparison between two buffer solutions:

To compare the pH of two different buffer solutions with different concentrations, Henderson-Hasselbalch equation is used.

pH = pKa + log [tex]\frac{Salt}{Acid}[/tex]

pKa of HOAc = 4.76

In solution 1:

Concentration of salt= 5 M

Concentration of acid= 5 M

Putting the values in the equation,

pH = 4.76 + log [tex]\frac{5}{5}[/tex]

pH = 4.76 + log1

pH = 4.76

In solution 2:

Concentration of salt= 0.050 M

Concentration of acid= 0.050 M

Putting the values in the equation,

pH = 4.76 + log[tex]\frac{0.050}{0.050}[/tex]

pH = 4.76 + log1

pH = 4.76

As the ratio  [tex]log\frac{salt}{acid}[/tex] is the same for the different solutions.

Therefore, the pH of the solution remains the same in both the buffer solutions even if the two solutions have different concentrations.

Learn more about buffer solutions here,

https://brainly.com/question/15991816

#SPJ4


Describe the scale used to measure the basicity of a substance. Demonstrate how you could differentiate a weak base from a strong one. (10
points)

Answers

Answer:

The pH scale is used to measure the acidity or basicity of a substance.

Explanation:

pH stands for potential hydrogen. It ranges from 0 to 14, 7 being neutral. The pH of water is 7 i.e. it is neither acidic nor basic. 0 to 7 shows acidic behavior while 7 to 14 shows basic behavior.

Experiment:

Dip the pH paper in the liquid and wait for ten seconds. The pH strip starts to discolor.

For a strong acid the strip will turn red.

For a weak acid the strip will become pale red.

To find the correct pH value we can compare it with the indicator scale present on the pH scale box.

The scale used to measure the basicity of a substance is called the pH scale.

What is the pH scale?

The pH scale is a logarithmic scale that ranges from 0 to 14 and is used to determine the acidity or basicity of a solution. A pH value of 7 is considered neutral, values below 7 are acidic, and values above 7 are basic.

To differentiate a weak base from a strong one, you can perform the following experiments:

pH Measurement: Measure the pH of the solution containing the base using a pH meter or pH indicator paper. A strong base will have a higher pH value, typically around 12-14, indicating a highly basic solution. A weak base will have a lower pH value, closer to 7, indicating a less basic or slightly basic solution.

Conductivity Test: Dissolve a small amount of the base in water and measure its electrical conductivity using a conductivity meter. Strong bases are good electrolytes and will conduct electricity well, resulting in a high conductivity. Weak bases, on the other hand, are poor electrolytes and will exhibit lower conductivity.

Reaction with Acids: Add a few drops of a strong acid, such as hydrochloric acid (HCl), to a solution containing the base. Strong bases will rapidly and completely neutralize the acid, resulting in a significant increase in pH. Weak bases, however, will only partially neutralize the acid, leading to a smaller increase in pH.

Learn more about pH scale at:

https://brainly.com/question/1433865

#SPJ2

What mass of oxygen reacts during the incomplete combustion of 18.0 g of propane?

Answers

Answer:

66 grams of carbon dioxide

C3H8+5O2=3CO2+4H2O

In the redox reaction below, which is the reducing agent?

MnO2(s) + 4H+(aq) + 2Cl–(aq) Right arrow. Mn2+(aq) + 2H2O(l) + Cl2(g)
CI–
CI2
Mn2+
MnO2

Answers

In the following redox reaction, the reducing agent is MnO2 (option D). Details about reducing agent can be found below.

What is a reducing agent?

A reducing agent in a redox reaction is any substance that reduces, or donates electrons to another, hence, it becomes oxidized.

According to this question, a redox reaction is given as follows: MnO2(s) + 4H+(aq) + 2Cl–(aq) = Mn2+(aq) + 2H2O(l) + Cl2(g)

As shown in the equation, MnO2 is oxidized into Mn2+, therefore, it is the reducing agent.

Learn more about reducing agent at: https://brainly.com/question/2890416

#SPJ1

The procedure calls for 2.0 ml of concentrated nitric acid. how many moles is this?

Answers

Answer:

ρHNO₃= 1.51 g/cm3

ρ = m/V

m = ρ x V

m = (1.51 g/cm3)(2 cm3)= 3.02 g de HNO₃

n = m/PM = 3.02 g/63.01 g/mol = 0.0479 mol de HNO₃

Explanation:

2 mL of concentrated nitric acid equals 0.0479 mol

If 10.0 moles of sulfur dioxide react with excess chlorine gas, what is the theoretical yield (in grams) of CI2O produced?

Answers

Answer:

869 g Cl₂O

Explanation:

To find the theoretical yield of Cl₂O, you need to (1) convert moles SO₂ to moles Cl₂O (via mole-to-mole ratio from reaction coefficients) and then (2) convert moles Cl₂O to grams Cl₂O (via molar mass). It is important to arrange the conversions/ratios in a way that allows for the cancellation of units (the desired unit should be in the numerator). The final answer should have 3 sig figs to reflect the sig figs of the given amount (10.0 moles).

1 SO₂ (g) + 2 Cl₂ (g) ----> 1 SOCl₂ (g) + 1 Cl₂O (g)

Molar Mass (Cl₂O): 2(35.453 g/mol) + 15.998 g/mol

Molar Mass (Cl₂O): 86.904 g/mol

10.0 moles SO₂         1 mole Cl₂O            86.904 g
------------------------  x  ----------------------  x  ------------------  = 869 g Cl₂O
                                    1 mole SO₂              1 mole

Zinc Sulfide reacts with oxygen according to the reaction:

2ZnS (s) + 3 O2(g) 2 ZnO (s) +2 SO2 (g)

A reaction mixture contains 4.2 moles of zinc sulfide and 6.8 moles of oxygen. Once the reaction occurred as a completely as possible, what amount in moles is left of the excess reactant?

Answers

The amount in moles of the excess reactant left is 0.5 mole

Balanced equation

2ZnS (s) + 3O₂(g) --> 2ZnO (s) + 2SO₂(g)

From the balanced equation,

2 moles of ZnS reacted with 3 moles of O₂

How to determine the excess reactant

From the balanced equation,

2 moles of ZnS reacted with 3 moles of O₂

Therefore,

4.2 moles of ZnS will react with =(4.2 × 3) / 2 = 6.3 moles of O₂

From the calculations made above, we can see that only 6.3 moles of O₂ out of 6.8 moles given, is required to react completely with 4.2 moles of ZnS.

Thus, ZnS is the limiting reactant and O₂ is the excess reactant.

How to determine the mole of the excess reactant remaining

The excess reactant is O₂. Thus the mole remaining after the reaction can be obtained as illustrated below:

Mole of O₂ given = 6.8 molesMole of O₂ that reacted = 6.3 molesMole of O₂ remaining =?

Mole of O₂ remaining = (Mole of O₂ given) - (Mole of O₂ that reacted)

Mole of O₂ remaining = 6.8 - 6.3

Mole of O₂ remaining = 0.5 mole

Learn more about stoichiometry:

https://brainly.com/question/25685654

#SPJ1

The combining power of an element is called ?
A. coefficient
B.subscript
C.periodicity
D.valence number

Answers

Answer:

D

Explanation:

Valency is the combining power of an element

Which state of matter is being described below?
It cannot be squashed easily, spreads out slowly, is of medium density & flows to
fill up space
A. Plasma
B. Liquid
C. Gas
D. Solid

Answers

Answer:

C. Gas

Explanation:

I think this is the right answer because it fits the description

Which molecules are types of lipids?

Answers

Answer: The answer is fatty acids and triglycerides

Explanation:

Please show all work:
If 40.0 grams of magnesium is reacted with an excess of nitric acid, HNO 3 , how many
grams of hydrogen gas will be produced?

Answers

3.3 g of hydrogen gas will be produced.

What is Stoichiometry ?

Stoichiometry helps to measure quantitative relationships between the amounts of products and reactants that are given in a reaction.

What is Balanced Chemical Equation ?

The balanced chemical equation is the equation in which the number of atoms on the reactant side is equal to the number of atoms on the product side in an equation.

Now we have to write the balanced equation

Mg + 2HNO₃  → Mg(NO₃)₂ + H₂

According to Stoichiometry

[tex]40.9\ \text{g Mg} \times \frac{1\ \text{mol Mg}}{24.31\ \text{g Mg}} \times \frac{1\ \text{mol}\ H_2}{1\ \text{mol Mg}} \times \frac{2.02\ g\ H_2}{1\ \text{mol}\ H_2}[/tex]

= 3.3 g H₂

Thus from the above conclusion we can say that 3.3 g of hydrogen gas will be produced.

Learn more about the Stoichiometry here: brainly.com/question/16060223

#SPJ1

A mole is a name for a specific number of things. What is the value of a mole? write the number using scientific notation. By what other name is it known? (2 points)

Answers

The value of a mole is 6.022 ×[tex]10^{23}[/tex]. The other name of mole is Avogadro's number.

The mole is define as  6.022 ×[tex]10^{23}[/tex] of the chemical unit like atoms , molecules, ions or others.It is very convenient unit because of huge numbers o f atoms, molecules or others. This is very important unit used by chemist.

One mole = atomic Mass of atoms / molecular mass of molecule

Example: one mole of sodium = 23 g = atomic mass

Learn about chemical unit

https://brainly.com/question/10997426

#SPJ4

For what mechanistic reason does g1 of lactase first act as a brønsted acid during catalysis?.

Answers

Glucose becomes a better leaving group.

In a manner similar to how protonation of an alcohol makes it easier to substitute a -OH group, glucose becomes a better leaving group when the oxygen atom is protonated.

What is Bronsted acid-base theory?

A substance that releases or donates hydrogen ions during a chemical reaction is referred to as a Bronsted-Lowry acid. A Bronsted-Lowry base, on the other hand, takes hydrogen ions. Another way to look at it is that a base accepts protons whereas a Bronsted-Lowry acid donates them. Amphoteric species are those that, depending on the circumstance, can either give or take protons.

Every Bronsted-Lowry acid gives a species that is its conjugate base a proton in exchange for the species' support. Each base in the Bronsted-Lowry system similarly accepts a proton from its conjugate acid.

I understand the question you are looking for is this:

For what mechanistic reason does G1 of lactase first act as a Bronsted acid during catalysis?

A) G1 becomes a better nucleophile

B) G2 becomes a better nucleophile

C) Glucose becomes a better leaving group.

D) Galactose becomes a better leaving group.

Learn more about Bronsted acid and base here:

https://brainly.com/question/148529

#SPJ4

In a mining community, groups of dead fish appear in a local river every few weeks. These fish kills coincide with incidents of mining waste dumped into the river. Which of the following components is an abiotic factor causing these fish kills?

Human activities
Biodiversity in the river
Water pollution
Overfishing

Answers

In a mining community, water pollution kills the fish in local river.

How does mining affect the rivers?

Large amounts of water are frequently used in mining, which has the potential to contaminate local groundwater, rivers, streams, and other water sources. A community's ability to grow its own food may be hampered by mining since it consumes grazing or agricultural land and pollutes the soil and the environment.

Metals that leach from the rock also contaminate nearby water sources when they do so. chemical processing pollution: When minerals are extracted from their ores using cyanide or sulfuric acid and water, the runoff pollutes the rivers in the area.

Through erosion and sedimentation, dewatering of wetlands, diverting and channelizing streams, and poisoning surface water and aquifers with harmful chemicals, surface mining can have an impact on fish and aquatic resources.

Learn more about mining here:

https://brainly.com/question/24108124

#SPJ1

Answer:

a

Explanation:

What is the smallest whole-number coefficient for h₂s when the equation h₂s mno₄⁻ → mn²⁺ so₄²⁻ is balanced in acidic solution?

Answers

The lowest smallest whole-number coefficient for H₂S is 5. Option C

What is the smallest whole-number coefficient for H₂S?

Now we know that a redox reaction is one in which there is a loss and gain of electrons One specie is oxidized (looses electrons) while another specie is reduced (gains electrons). The electrons must be transferred leading to an increase in oxidation number of one specie and a decrease in the oxidation number of another.

Now the reduction half equation is;

MnO4^-(aq) + 8H^+(aq) + 5e^- ----> Mn^2+(aq) + 4H2O (l)

The oxidation  half equation is;

H2S(aq) ----> S^2-(aq) + 2H^+(aq) + 2e^-

Multiplying the reduction half equation by 2 and the  oxidation  half equation is 5

2MnO4^-(aq) + 16H^+(aq) + 10e^- ----> 2Mn^2+(aq) + 8H2O (l)

And;

5H2S(aq) ----> 5S^2-(aq) + 10H^+(aq) + 10e^-

The overall balanced reaction equation is;

2MnO4^-(aq) + 6H^+(aq) + 5H2S(aq) ----> 2Mn^2+(aq) + 8H2O (l) + 5S^2-(aq)

Thus the lowest smallest whole-number coefficient for H₂S is 5.

Learn more about redox reaction:https://brainly.com/question/13293425

#SPJ1

Can someone fill this out pleaseee for me

Answers

Filling out the table below following the outlined order:

Calcium - symbol = Ca; Group =2; Period = 4; Ar = 134; Am =40.078u; Ph = solid; Density = 1.55; Bp = 1757K; Mp = 1115K.Vanadium - symbol = V; Group =5; Period = 4; Ar = 197; Am =50.9415u; Ph = solid; Density = 6.11; Bp = 3680K; Mp = 2183K.Manganese - symbol = Mn; Group =7; Period = 4; Ar = 127; Am = 54.938044u; Ph = solid; Density = 7.21; Bp = 2334K; Mp = 1519K.Cobalt: - symbol = Co; Group =9; Period = 4; Ar = 125; Am =58.933195 u; Ph = solid; Density = 8.90; Bp = 3200K; Mp = 1768K.Zinc: - symbol = Zn; Group = 12; Period = 4; Ar = 134; Am =65.38 u; Ph = solid; Density = 7.14; Bp = 1180K; Mp = 692.68K.Arsenic: - symbol = As; Group = 15; Period = 4; Ar = 197; Am = 74.9216 u; Ph = solid; Density = 5.75; Bp = 889K; Mp = 889K.Bromine: - symbol = Br; Group =17; Period = 4; Ar = 120; Am = 79.904 u; Ph = Liquid; Density = 3.1028; Bp = 332K; Mp = 265K.

Meaning of Element

An element can be defined as a substance that can not be broken down into simpler substances.

An element serves as a building blocks for compounds and mixtures.

In conclusion, each element and its property as requested in the table are given above.

Learn more about element : https://brainly.com/question/18096867

#SPJ1


What are the correct half reactions for the following reaction:
Zn + 2 HCI -> H₂ +zncl2

Answers

Answer:

Zn(s) + 2H+(aq) => Zn²+(aq) + H2 (g)

Explanation:

The equation Zn + 2 HCI -> H₂ +zncl2 on reduction and oxidation, it results as below;

2H+ + 2e- => H2 ; reductionZn => Zn²+ + 2e- ; oxidation

The equations above are half cell.

On combination of the above half cell reaction equations gives;

Zn(s) + 2H+(aq) => Zn²+(aq) + H2 (g).

Therefore, the half reaction equation for Zn + 2 HCI -> H₂ +zncl2 is given by;

Zn(s) + 2H+(aq) => Zn²+(aq) + H2 (g).

A welding torch requires 4122.8l of ethylene gas at 0.64 atm what will be the pressure of the gas if ethylene is supplied by a 51.6 l tank

Answers

The pressure of the gas if ethylene is supplied by a 51.6 l tank is 51.1355atm

The final pressure of the gas can be calculated by using the formula given by Boyle's law,

      P1V1 = P2V2

What is Boyle's law?

    Boyle's law relates the compression and expansion of gas at a constant temperature. It states that, At constant temperature the pressure exerted by a gas is inversely proportional to the volume of the given mass of gas.

      P1V1 = P2V2

where,

P1 is the initial pressure

V1 is the initial volume

P2 is the final pressure and

V2 is the final volume.

Given data:

Initial volume V1= 4122.8L

Initial pressure P1= 0.64atm

Final volume V2= 51.6L

Final pressure P2= ?

   0.64*4122.8= P2*51.6

   P2= 2638.592/51.6

   P2= 51.1355atm

Hence the final pressure of the gas is 51.1355atm

Learn more about Boyle's law on

https://brainly.com/question/1696010

#SPJ1

Conclusion: why do you think it is important to record your data with all the decimals provided by the instruments even if they are zero? How does this help with data analysis?

Answers

It increases the degree of accuracy for your results.

Consider the following intermediate chemical equations.
CH₂(g) → C(s) + 2H₂(g)
ΔΗ, = 74.6KJ
CCl4(g) →C(s) + 2Cl₂(g)
AH₂ = 95.7 kJ
H₂(g) + Cl₂(g) → 2HCl(g)
AH₂=-92.3 KJ
What is the enthalpy of the overall chemical reaction CH4(g)+4Cl₂(g) → CCl4(g) + 4HCI(g)?
O-205.7 kJ
O-113.4 kJ
O-14.3 kJ
O 78.0 kJ

Answers

Based on the calculations, the enthalpy of the overall chemical reaction is equal to: C. -14.3 kJ.

What is a chemical reaction?

A chemical reaction can be defined as a chemical process that involves the continuous transformation (rearrangement) of the ionic, atomic or molecular structure of a chemical element by breaking down and forming chemical bonds, in order to produce a new chemical compound while new bonds are formed.

What is a chemical equation?

A chemical equation can be defined as a group of chemical symbols that is typically used in chemistry to represent the chemical reaction between two (2) or more chemical elements.

Mathematically, an expression for enthalpy of the overall chemical reaction is given by:

ΔHrxn = (n × ΔH₃) + (-n × ΔH₁) + (n × ΔH₂)

Where:

n represents the number of moles.

Substituting the given points into the formula, we have;

ΔHrxn = (2 × ΔH₃) + (-1 × ΔH₁) + (1 × ΔH₂)

ΔHrxn = (2 × (-92.3)) + (-1 × (-74.6)) + (1 × (-95.7))

ΔHrxn = -184.6 + 74.6 + 95.7

ΔHrxn = -14.3 kJ.

Read more on enthalpy here: https://brainly.com/question/12993630

#SPJ1

Name the following ether: OCH2CH3
A. ethyl benzyl ether
B. methyl phenyl ether
C. ethyl phenyl ether
D. ethyl propyl ether

Answers

The name of the given ether is ethyl benzyl ether .

What are ethers?

Ethers are organic compounds formed when nan oxygen atom is bonded to two alkyl or aryl groups.

Ethers usually have relatively high boiling points as a result of the central oxygen atom. An example of an ether, is ethyl propyl ether

The name of the given ether is ethyl benzyl ether as it has a benzyl and ethyl group attached to the oxygen atom.

In conclusion, ethers are characterized by an oxygen atom bonded to two alkyl or aryl groups.

Learn more about ethers at: https://brainly.com/question/20772030

#SPJ1

Liquids A and B form an ideal solution. The vapor pressure of pure A is 0.700 atm at the normal boiling point of a solution prepared from 0.250 mole of B and 0.650 mole of A. What is the vapor pressure of pure B at this temperature

Answers

The vapor pressure of pure B is 1.77atm

Given:-

Vapor pressure of Pure A = 0.700atm

Mole of A = 0.650mole

Mole of B = 0.250mole

Dalton's law of partial pressures states that the total pressure exerted by a gas mixture is equal to the sum of the partial pressures of all of the constituent gases.

So, Ptotal =  [tex]P_A + P_B[/tex]

According to Raoult's law, a solvent's partial vapor pressure in a solution (or mixture) is equal to or the same as the pure solvent's vapor pressure times the mole fraction present in the solution.

So, Ptotal =  [tex]X_AP_A + X_BP_B[/tex]

Ptotal = 1atm

1atm = (0.650/0.650+0.250 X 0.700atm) + 0.250/0.650+0.250 X [tex]P_B[/tex]

1atm = 0.722 X 0.700atm + 0.278 X [tex]P_B[/tex]

1atm = 0.506atm + 0.278 X [tex]P_B[/tex]

1atm - 0.506atm =  0.278 X [tex]P_B[/tex]

0.494atm = 0.278 X [tex]P_B[/tex]

[tex]P_B[/tex] =  0.494atm / 0.278

[tex]P_B[/tex] = 1.77atm

Learn more about vapor pressure

https://brainly.com/question/26671872

#SPJ4

What mass of oxygen reacts during the incomplete combustion of 18.0 g of propane?

Answers

Based on the mole ratio, the mass of oxygen reacting is 45.8 g.

What mass of oxygen reacts during the reaction?

The incomplete combustion of propane with oxygen produces carbon (ii) oxide and water.

The mole ratio of propane to oxygen according to the equation of the reaction is 2 : 7.

Molar mass of propane = 44 g/mol

Molar mass of oxygen = 32 g/mol

moles in 18.0 g = 18/44 mole

Mass of oxygen reacting = 18/44 * 7/2 * 32 = 45.8

In conclusion, incomplete combustion of propane produces carbon (ii) oxide.

Learn more about combustion reaction at : https://brainly.com/question/10458605

#SPJ1

What is the name of the amide bond between amino acids?
a. polyamide bond
b. polyamine bond
c. polyamino acids bond
d. protein bond
e. peptide bond

Answers

The name of the amide bond between amino acids will be peptide bond.

Peptide bonds are amide-type covalent bonds that form bonds that connect two adjacent alpha-amino acids throughout peptide or protein chains, starting at C1 of one as well as [tex]N_{2}[/tex] of another.

The substances are known as amino acids, or the "building blocks of proteins," and play a variety of vital functions in the human body. Humans require them for essential functions like producing hormones, neurotransmitters, even proteins. In meals high in protein like meat, fish, as well as soybeans, amino acids could be concentrated.

Therefore, the name of the amide bond between amino acids will be peptide bond.

Hence, the correct answer will be option (e)

To know more about peptide bond

https://brainly.com/question/15078143

#SPJ4

Other Questions
People who lacked land and tools, did not control sufficient capital to build workshops, and sold their labor were considered which of the following classes of people, according to Karl Marx?proletariat Explain why the use of empirically supported treatments is especially important for the treatment of mental health disorders in children and adolescents. Half credit for just listing reasons.) when planning care for a patient with melena, the nurse expects which appearance of the stool? black and tarry stools coffee ground appearance of the stool visually undetectable blood bright red blood in the stool Strong and often corrupt urban political party organizations during the late nineteenth and early twentieth centuries were called ________.A. gangs B. juntas C. machines D. corporations E. 527 committees The clusters of competencies needed by human resource professionals include technical, interpersonal, business, and leadership competencies. When an error in meiosis results in 2n gametes instead of 1n gametes, this is called. An atom of 90Br has a mass of 89.930638 amu. mass of1H atom = 1.007825 amu mass of a neutron = 1.008665 amu Calculate the binding energy in MeV per atom. Some states have refocused juvenile justice efforts to include prevention and rehabilitation as goals because of ______.A. moral valuesB. financial exigencyC. lawsuitsD. increased crime Evaluate dw/dt at t = 4 for the function w(x, y) = e^y - In x; x = t2, y = ln t. a. 3/4 b. 2 c. -1/2 d. 1/2 A strict dress-code policy is used by more than half of all schools, some parents and students continue to fight for a student's freedom of expression. They feel that these strict policies are unfair and discouraging to students. , both teachers and students have described positive effects from the policies. These have included a decrease in peer pressure and distractions. With arguments from both sides, finding a middle ground for most campuses or districts can be tough some see the victims movement as providing much needed support for victims of crime. others view the victims movement as manipulating victims by providing Rohan had Rupees (6x + 25 ) in his account. If he withdrew Rupees (7x - 10) how much money is left in his acoount How large must the coefficient of static friction be between the tires and the road if a car is to round a level curve of radius 130 mm at a speed of 118 km/h? question content area if you separated a mixture of benzene, toluene, and m-xylene by gas chromatography, what would be the expected order of retention times? Which answer choice describes how the graph of f(x) = x wastransformed to create the graph of n(x) = x- 1?A A vertical shift upB A horizontal shift to the leftCA vertical shift downD A horizontal shift to the right what were the impacts of the columbian exchange for people living in different regions and social classes around the world? Why and how were the impacts similar and different? the nurse is reviewing the use of uterine tocolytics, such as indomethacin (indocin). which statement best describes the indication for these drugs? |x/3| if x Determine whether the series converges or diverges.[infinity] 4n + 13n 5n = 11. The series converges by the Comparison Test. Each term is less than that of a convergent geometric series.2. The series converges by the Comparison Test. Each term is less than that of a convergent p-series.3. The series diverges by the Comparison Test. Each term is greater than that of a divergent p-series.4. The series diverges by the Comparison Test. Each term is greater than that of a divergent geometric series. identify the nuclide produced when uranium-238 decays by alpha emission: 238 92u42he + ? express your answer as an isotope using prescripts.