How does the rule of zero charge help you predict the formula of an ionic compound?

Answers

Answer 1

Answer: Overall the ionic compound cannot be charged, so all charges of the ions must be balanced. This means if you know the charge of 1 ion (E.G. Ca2+ ion) and you know the charge of the other ion (E.G. Cl1-) then you can work out that to make the overall charge 0, there must be double the amount of chlorine ions than calcium ions present. From this, you can work out the formula must be CaCl2.

Related Questions

If you make a solution that has a H+ concentration of 0.075, whatwill the pH of the solution be?
How many molecules are found in 0.589 moles of N2?
Which energy transformation occurs when anelectrolytic cell is in operation? (1) chemical energy → electrical energy (2) electrical energy → chemical energy (3) light energy → heat energy (4) light energy → chemical energy
Which of the following is malleable? A. glass B. pottery C. ice D. gold
Would you expect the water or sugar solution to have the most supercooling? WHY? PLEASE HELP

Which of the following is not true of "concentration"?a. It increases when you add more solute to the solvent.
b. It decreases when you add more solute to the solvent.
c. It decreases when you add more solvent to the solution.

Answers

The correct answer is B. The concentration of a solution does not decreases when you add more solute to the solvent. Instead, the concentration increases. Concentration is expressed as the amount of solute per unit of solvent. Therefore, increasing the solute, increases this value and increasing the solvent, decreases this value.

Which statement regarding serum magnesium (Mg ++) is true? (Select all that apply.) Alcohol-related diseases frequently cause low Mg+ levels. Vomiting is not generally seen as a major cause of Mg+ loss. Mg++ levels present similarly to calcium (Ca++) levels in the blood. Mg+ deficiencies often result in low serum potassium (K+) levels. Mg+ deficiencies must be treated before potassium (K+) deficiencies.

Answers

Answer:

Alcohol-related diseases frequently cause low Mg+ levels.

- Mg+ deficiencies must be treated before potassium (K+) deficiencies.

- Mg+ deficiencies often result in low serum potassium (K+)

- Mg++ levels present similarly to calcium (Ca++) levels in the blood.

- Vomiting is not generally seen as a major cause of Mg+ loss

43 A sample of helium gas is in a sealed, rigid container. What occurs as the temperature of the sample is increased?(1) The mass of the sample decreases.(2) The number of moles of gas increases.
(3) The volume of each atom decreases.
(4) The frequency of collisions between atoms increases.

Answers

Answer is: (4) The frequency of collisions between atoms increases.

The average kinetic energy of molecules depends on the temperature.

As temperature increases, molecules gain more energy from surrounding and move faster and have more collisions.

Kinetic energy (standard unit is the joule J) depends on speed of the molecule.

Charles' Law (The Temperature-Volume Law) - the volume of a given amount of gas held at constant pressure is directly proportional to the Kelvin temperature:

V₁/T₁ = V₂/T₂.

When temperature goes up, the volume also goes up.

The best answer is (4) The frequency of collisions between atoms increases, for we are providing the atoms with energy.
Hope this helps~

Please answer these questions it is simple and easy every one look

Answers

I think that the ants would prefer honey and maple syrup - as they're full of sugars that the ants can convert to energy.

I think that the ants would also locate the source of the food very fast and that they would go there directly -as if they were telling each other where the food is. And it is true, the ants can tell the other ants to follow them in the source of food, similarly to bees.

Discuss the phenomena of sunrise and sunset seen on Earth and describe how they will be different from the perspective of outer space. PLS REPLY ASAP AND EXPLAIN IM DESPEPERATE

Answers

Answer:

IM TO LATE SORRY

Explanation:

The pH of a solution is 2.0. Which statement is correct? A)The pOH of the solution is 12.0. B)The concentration of OH- ions is 1.0 x 10-2 M. C)The concentration of H+ ions is 100.0 M. D)The pOH of the solution is 7.

Answers

The statement which is correct is the one stating that the pOH of solution is 12.0.

What is pOH?

pOH is defined as the measure of determining the alkalinity or basicity of the solution.It is also used for the determination of the concentration of the hydroxyl ions which are present in the solution.

Mathematically, it can be defined as the negative logarithm of the hydroxyl ion concentration present in a solution,that is,

pOH= -log(OH $^-$ )

It can be used for the purpose of an indicator for determining the alkalinity of the substance where the pH values lies above 7.It also finds application in determining the electrical conductivity as well.It is related to the pH by the equation,

pH+pOH=14

For determining the amount of corrosion ,pOH can be used as an indicator for an electrolyte's conductivity.Hence, it can be concluded that higher the pOH ,higher the alkalinity and higher is the amount of corrosion.

Learn more about pOH ,here:

brainly.com/question/854299

#SPJ5

The relationship of pH and concentration of H+ ion is pH = -lg[H+]. So the concentration of H+ is 10^(-2). And [OH-][H+]=10^(-14). pOH + pH = 14. So the right answer is A.

Other Questions

On a temperature versus time graph, how does the temperature at the beginning of a change of state compare with the temperature at the end of the change?

Which of the following is true for compounds?They can be separated into their component elements through physical means.They can be created by chemical reactions.They can consist of no more than two types of elements.They all have the same properties regardless of their elemental composition.

In which chemical reaction will the heat content of the reactants be more than that of the products?

What is your question? HIGH SCHOOL CHEMISTRY 5+3 pts To ensure that the air in the shuttle remains free of excess CO2, engineers test the air-purification system. They combine 1.000 × 103 g LiOH with 8.80 × 1 02 g CO2. The reaction produces 3.25 × 102 g H2O. What is the limiting reactants in this test reaction