Test Review

Front

Calculate the molar mass of Cu2O.

Back

143 g/mol

Front

The name of NO3- is

Back

Nitrate ion

Front

Name the following compound MgOH

Back

Magnesium hydroxide

Front

A compound consists of 72.2% magnesium and 27.8% nitrogen by mass. What is the empirical formula?

Back

Mg3N2

Front

What is the formula for Nitrous Acid?

Back

HNO2

Front

Define molar mass.

Back

The mass of one mole of a substance, typically expressed in grams per mole (g/mol).

Front

What is an empirical formula?

Back

The simplest whole-number ratio of atoms of each element in a compound.

Front

What is the difference between a molecular formula and an empirical formula?

Back

A molecular formula shows the actual number of atoms of each element in a molecule, while an empirical formula shows the simplest ratio of these atoms.

Front

What is the formula for calculating molar mass?

Back

Sum of the atomic masses of all atoms in a molecule.

Front

What is the significance of the nitrate ion in chemistry?

Back

It is a common polyatomic ion used in fertilizers and explosives.