copper atoms and zinc atoms have the same atomic radius, 135 picometers. based on this information, which of the following diagrams best represents an alloy containing only copper and zinc atoms?
Answers
Since copper and zinc atoms have the same atomic radius, an alloy of copper and Zinc will have the structure shown in option B.
What is an alloy?An alloy is a combination of two or more metals Alloys are known to have better tensile strength and higher resistence to corrosion.
We are told that both copper atoms and zinc atoms have the same atomic radius, 135 picometers. It then follows that an alloy of copper and Zinc will have the structure shown in option B.
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Related Questions
Suppose a man is heterozygous for heterochromia, an autosomal dominant disorder which causes two different‑colored eyes in an individual, produced 25‑offspring with his normal‑eyed wife. of their children, 15 were heterochromatic and 10 were‑normal. calculate the chi‑square value for this observation.
Answers
The chi‑square value for this observation is 1.96
What is Chi-square?This is known to be a form of statistical test that is employed so as to investigate the differences that exist between categorical variables taken from a random sample.
It is used to construct or to judge goodness of fit that exist between expected and observed results.
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Two identical regular hexagons are joined together
Answers
Answer:
The answer is x=120 °
Explanation:
Which additional fact would prove that quadrilateral wxyz is a parallelogram?
Answers
The quadrilateral wxyz has four sides
The additional fact that would prove that quadrilateral wxyz is a parallelogram is that XY = WZ
How to prove that wxyz is a parallelogram?For a shape to be a parallelogram, the folllowing must be true
The shape must be a quadilateralThe opposite sides of the shape must be congruentThe opposite sides of the shape must be parallelHence, the additional fact that would prove that quadrilateral wxyz is a parallelogram is that XY = WZ
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A food worker has prepared a large pot of rice that must be cooled
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A polygon with all equal sides and equal angles is brainly
Answers
Answer:
It's a regular polygon
Explanation:
A polygon having equal sides and equal angles is a regular polygon. A regular polygon has three parts: Sides.
The product of 2 positive integers is 78. The greater
integer is 1 more than twice the lesser integer. What is
the greater integer?
Answers
Answer:
it's ez add it and it should give u the question
Explanation:
yea add it and u will get it
The main acid in the stomach is hydrochloric acid (hcl). which chemical equations show a reaction that occurs when someone takes an antacid? check all that apply.
Answers
The chemical equations that show a reaction that occurs when someone takes an antacid are;
HCl + NaHCO₃ -> NaCl + H₂O + CO₂2HCl + CaCO₃ -> CaCl₂ + CO₂ + H₂O2HCl + Mg(OH)₂ -> MgCl₂ + 2H₂OWhat is the correct chemical equation?
Hydrochloic acid would normally react with the basic substances in the stomach. Now, these substances that react with hydrochloric acid in the stomach are magnesium hydroxide, sodium bicarbonate and calcium carbonate.
Thus, from the above dewscription, the chemical equations that show a reaction that occurs when someone takes an antacid are;
HCl + NaHCO₃ -> NaCl + H₂O + CO₂2HCl + CaCO₃ -> CaCl₂ + CO₂ + H₂O2HCl + Mg(OH)₂ -> MgCl₂ + 2H₂ORead more about chemical equations at; https://brainly.com/question/11231920?source=archive
When reacting na with cl2, we calculated that the theoretical yield should be 13
Answers
Answer:
96.15
Explanation:
when reacting with Na with Cl2, we calculated that the theoretical yield should be 13.0 grams. our actual yield was 12.5 grams. what is the percent yield? 96.15
8-6 skills practice solving rational equations and inequalities
Answers
There are different kinds of rational equations and inequalities. An example is:
In order to simplify a rational number or rational expression, ----- the numerator and ------- and divide both of them by their -------What are rational equations?A rational equation is known to be a type of equation that has at least one fraction that the numerator and denominator are said to be polynomials.
The answer is In order to simplify a rational number or rational expression, Factor the numerator and denominator and divide both of them by their greatest common factor.
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Bill was injured on the job and hospitalized for several months
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Answer:
WHAT HAPPENED TO BILL AFTER THAT???
During the halftime performance for a football game, the color guard is planning a new formation in which seven members stand around a central point and stretch their flag to the person immediately to their left. 10. what is the measure of each exterior angle of the formation?
Answers
There are different kinds of angles. The measure of each exterior angle of the formation is 51.4.
What is a exterior angle in math?The term exterior angle is known to be the angle that is found between a side of a polygon and that of an extended adjacent side.
The shape of the halftime is regular heptagon.
Note that a regular heptagon has 7 congruent sides and 7 congruent interior angles.
So the exterior angles are said to be congruent, based on the fact that angles supplementary to congruent angles are regarded as congruent.
So Let take n as the measure of each exterior angle.
7n = 360
n= 360/n
To Solve for n =51.4
Therefore, The measure of each exterior angle of the formation is 51.4.
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Course 1 chapter 10 volume and surface area answer key
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An example of Course 1 chapter 10 volume and surface area question is find the volume of the figure (image attached.) The volume is option C.
What is the surface area?Surface area is a term that connote the total area which the surface of the object is said to occupy. It is often divided into a sum of base area(s) and also lateral surface area.
To solve for the volume,
v = ewh
v 7.2 (3.2) (5.2)
Therefore, v = 125.528m³
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drag the labels to identify the events in the generation of an action potential in order and correctly name the refractory periods.
Answers
An absolute refractory period occurs during depolarization while the relative refractory period takes place during repolarization.
What is an action potential?An action potential refers to a sudden, quick change in electrical potential (voltage) during the transmission of an impulse (signal) to a receptor, across a cellular membrane.
The order of events in the generation of an action potential include the following:
At -60 mV, graded depolarization transmits an area of excitable membrane to threshold.At +30 mV, voltage-gated sodium channels are opened for sodium ions to move into the cell. As repolarization begins, sodium channels close, voltage-gated potassium channels are opened for potassium ions to move out of the cell. Finally, both sodium and potassium channels return to their normal states as the potassium channels is closed.In conclusion, an absolute refractory period occurs during depolarization while the relative refractory period takes place during repolarization.
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according to carl jung, which of the following best served the goal of self-realization?
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When the 0.10 m solution of hclo2 is allowed to come to equilibrium, what percent of the acid molecules are ionized?
Answers
If 0.10 m solution of hclo2 is allowed to come to equilibrium, the percent of the acid molecules that is ionized is 29%
We have
HClO2 = 0.1 mole = 0.012
HClO + H2O ⇄ ClO₂⁻ + H₂O
Ka = 0.1α x 0.1α / 0.1(1-α)
= 0.1α²/1-α = 0.12
We have to form a quadratic equation from the above
0.1α² = 0.012 - 0.12α
We write the equation to be
0.1α² + 0.012 - 0.12α = 0
To solve the equation above, the quadratic formula calculator was used.
[tex]\frac{-b+-\sqrt{b^2-4ac} }{2}[/tex]
alpha = 0.29
This is 29 percent. Therefore the percentage of ionization is 29%.
What is ionization?This is the process through which neutral ions are chraged to become electrically charged.
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In the electrolysis of a molten mixture of rbcl and kbr. identify the product that forms at the negative electrode and at the positive electrode.
Answers
The product that are formed at the negatively charged electrode (cathode) and at the positively charged electrode (anode)
Strontium at cathode.Chlorine at anode.What is electrolysis?Electrolysis can be defined as the chemical decomposition of a chemical compound or substance into their respective elements by passing direct electric current through them in a solution (liquid) containing ions.
In the electrolysis of a molten mixture of rubidium chloride (RbCl) and Potassium bromide (KBr), the product that are formed at the negatively charged electrode (cathode) and at the positively charged electrode (anode)
Strontium at cathode.Chlorine at anode.Read more on ions here: https://brainly.com/question/11638999
One of the purposes of research is to address the pressing issues in the society. As a student who is a keen observer and is aware of the local, national or international affairs, list down three crucial concerns and propose a solution for each. (5 points each) For example: Problern 1 (Local): Diesel price hike Proposed Solution:Used Cooking Oil as a Substitute for Diesel Problem 1: Local Issue 2: National Issue 3. International Issue Proposed Solution
Answers
The crucial concerns for Diesel price hike are:
Do leads to an increase in the prices of goods and services.Lowers the purchasing power of money. Has a negative impact on consumers' welfare.The Proposed Solution are:
Create an alternative kind of fuel.Find an alternative supplier for the diesel at cheaper price.Why is diesel very expensive?The movement to a form of fuel that is less polluting and one that has a reduces sulfur diesel fuels in the United States is known to have influence the increase in the price of diesel fuel production and also its distribution costs.
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At which event must special care be taken when preparing food
Answers
Answer:
occasions
Explanation:
During occasions such as Easter, Christmas etc when preparing a food take risk and measures make it delicious
6-7 skills practice solving radical equations and inequalities
Answers
There are different types of math problems. An example of radical equations and inequalities practice question is [tex]\sqrt{x}[/tex] = 5
What is a radical inequality?The term radical inequality is known to be a form of an inequality that maintains a variable expression that is present within it.
For the above question, find the [tex]\sqrt{x}[/tex] = 5
The next step is to square both side:
When you square both side, it will be
x = 25.
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Ecoskate makes skateboards from recycled plastic. for a recent job lot of 100 skateboards, the company incurred direct materials costs of $600 and direct labor costs of $200. factory overhead applied to this job is $900. required: 1. what is the total manufacturing cost of this job lot? 2. what is the cost per skateboard?
Answers
Answer:
32$ per skateboard for this question
Choose the correct percentage to complete the sentence. more than of organizations in the united states report that they are unprepared for even basic security attacks.
Answers
More than 70% of organizations in the United States report that they are unprepared for even basic security attacks.
What is a security attack?A security attack is a type of computer attack aimed at stealing, damaging and/or exposing digital information.
A security attack may be aimed, for example, to steal passwords in a given bank or financial organization.
The number of security attacks has increased in a sudden manner in the last years around the world.
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Answer:
70%
Explanation:
Ed22
An executor should be willing and reliable because brainly
Answers
The reason why the executor should be reliable is because; such a person is dealing with a very delicate thing that loss could be devastating.
What is the role of an executor?An executor is simply a person named in a will whose job it is to sort out the estate of the person who has died. The estate includes everything owned such as money, property and possessions.
Before appointing someone as an executor, it is very vital to carry out a background checks to ensure that the person has not been found guilty of fraud, theft or unethical practices in the past. This is because the person must have integrity to carry out this role.
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Answer:
need to be trusted to carry out will instruction
Explanation:
What do we have to do to the conversion factor if we are dealing with units that measure area?
Answers
You would cube it so if theres a cube it answer than use that
The conversion factor to the units of the measure of area is squared. Thus, option D is correct.
What is a conversion factor?A conversion factor is given as the number that enables the changing of one set of units to another with the help of mathematical operations such as division or multiplication.
The area can be given as the region that is found bounded within the shape. The unit of area has been measured in square units. Thereby the conversion factor dealing with the area made to be squared. Thus, option D is correct.
The complete question is attached in the image.
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Mark wants to determine the height x of a nearby tree
Answers
The height of the tree that can be determined by Mark will be 27.6 feet.
How to calculate height?From the complete question, Mark wants to determine the height x of a nearby tree as he stands 47 feet from the base of the tree and the measure of the angle of elevation is 36°.
The height of the tree will be:
= 47 × sin 36°
= 47 × 0.5878
= 27.6
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The volume of a cylinder is 400???? cubic cm and its height is 4 cm.what is the radius?
Answers
Answer: 5.64 cm
Explanation:
Volume of a cylinder = π * r^2 * h →
400 = π * r^2 * 4 →
r = 5.64 cm :)
12.3 geometric series evaluate homework and practice
Answers
The geometric series would have a uniform common ratio
The recursive definition of the geometric sequence is [tex]a_n = 4a_{n-1}[/tex] where a1 = 128
How to determine the geometric series?Assume the geometric sequence is given as:
128,32,8,2
And the question requires the recursive definition of the geometric series
Start by calculating the common ratio (r)
[tex]r = \frac{a_{n}}{a_{n-1}}[/tex]
Substitute 2 for n
[tex]r = \frac{a_2}{a_1}[/tex]
Substitute known values
[tex]r = \frac{128}{32}[/tex]
Evaluate the quotient
[tex]r = 4[/tex]
Substitute 4 for r in [tex]r = \frac{a_{n}}{a_{n-1}}[/tex]
[tex]4 = \frac{a_{n}}{a_{n-1}}[/tex]
Cross multiply
[tex]a_n = 4a_{n-1}[/tex]
Hence, the recursive definition of the geometric series is [tex]a_n = 4a_{n-1}[/tex] where a1 = 128
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It is the amount of fat cells compared with lean cells in the body mass
Answers
Answer:
Lean Body Mass
Explanation:
is calculated as the difference between total body weight and body fat weight
Each of the following statements is arguably true of thermometers. Which of them is most helpful to keep in mind if you are conducting an experiment to measure the specific heat of a material?
Answers
The statement that is true of thermometers is; The temperature reported by a thermometer is never precisely the same as its surroundings.
What is the function of thermometer in an experiment?In the experiment to determine the specific heat of a material, the theory will be one which explains that when a heat interchange takes place between two bodies that were having different temperatures at the beginning, the quantity of heat the warmer body looses is equal to that gained by the cooler body to reach the equilibrium temperature. This is true only if no heat is lost or gained from the surrounding.
Now, If heat is gained or lost from the surrounding environment, the temperature readings by the thermometer will be incorrect. The experimenter should therefore have in mind that for accurate results, the temperature recorded by the thermometer is similar to that of the surrounding at the beginning of the experiment and if it differs then note that heat is either gained or lost to the environment.
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The principal square root of any nonnegative real number is always nonnegative.
Answers
A female giraffe has 62 chromosomes in each of her skin cells how many chromosomes will be in the skin cells of her offspring
Answers
The number of chromosomes that will be in the skin cells of each of her offspring is; 62
What is the number of chromosomes in the offspring?
Male and female animals differ in the number of se x chromosomes they have. A male animal carries one X chromosome which is received from his mother as well as one Y chromosome which is received from his father. However, a female animal carries two copies of the X chromosome which is one from each parent.
Now, we are told that the female giraffe has 62 chromosomes in each skin cell and as such it means that the offspring will also have 62 chromosomes in each skin cell.
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