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Calculating Molecular Mass of a Compound: Sample Problem 2.16

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Calculating Molecular Mass of a Compound: Sample Problem 2.16

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Questions and Answers

What is the purpose of finding the smallest number of each ion in a binary ionic compound?

To determine the number of atoms in the compound

To identify the type of bond in the compound

To determine the mass of the compound

To produce a neutral compound (correct)

What is the significance of a subscript in a formula unit of a binary ionic compound?

It indicates the number of atoms in the compound

It indicates the relative number of cations and anions (correct)

It indicates the type of bond in the compound

It indicates the charge of the ion

What is the charge of a cadmium ion in a binary ionic compound?

Cd2+ (correct)

Cd+

Cd3+

Cd4+

What is the formula unit for the compound cesium sulfide?

Cs2S Signup and view all the answers

Why are subscripts 1 and 0 never used in a formula unit of a binary ionic compound?

Because they are implied to be 1, so they are not written Signup and view all the answers

What is the type of ion that strontium forms in a binary ionic compound?

Sr2+ Signup and view all the answers

What is the systematic name for the compound Fe(ClO4)2?

Iron(II) perchlorate Signup and view all the answers

In the compound Na2CO3, what is the name of the anion?

Carbonate Signup and view all the answers

What is the formula for sodium sulfite?

Na2SO3 Signup and view all the answers

How many water molecules are present in a formula unit of barium hydroxide octahydrate?

10 Signup and view all the answers

Which of the following is not a polyatomic ion mentioned in the text?

Sulfate Signup and view all the answers

What would be the charge on the Iron ion in the compound Fe(ClO3)2?

2+ Signup and view all the answers

What is the molecular mass of tetraphosphorous trisulfide?

220.09 amu Signup and view all the answers

What is the formula of the compound represented by a brown Na+ and a green F-?

NaF Signup and view all the answers

What is the formula mass of ammonium nitrate?

80.05 amu Signup and view all the answers

How is the formula of a compound with only two elements determined?

By finding the simplest whole number ratio of atoms in the compound Signup and view all the answers

The compound NaF has a molecular mass equal to:

41.99 amu Signup and view all the answers

A compound has 2 green O atoms for every 1 red Mg atom. What is the possible formula of this compound?

MgO Signup and view all the answers