Counting Atoms in Chemical Formulas Practice

Front

What does the coefficient in a chemical formula tell you?

Back

It tells you how many molecules are present.

Front

Coefficients in chemical formulas multiply what?

Back

They multiply everything in the formula.

Front

In the formula C3H5(NO3)3, how many atoms of Oxygen are there?

Back

There are 9 Oxygen atoms.

Front

How many elements are present in the compound Mg2As3COHNi2?

Back

There are 6 elements.

Front

What is a coefficient in a chemical formula?

Back

A coefficient is a number written in front of a chemical formula.

Front

What does a subscript in a chemical formula indicate?

Back

A subscript indicates the number of atoms of an element in a molecule.

Front

In the formula H2O, how many hydrogen atoms are there?

Back

There are 2 hydrogen atoms.

Front

What is the total number of atoms in the formula C2H6?

Back

There are 8 total atoms.

Front

If a chemical formula has a coefficient of 2, how many molecules are there?

Back

There are 2 molecules.

Front

In the formula NaCl, how many elements are present?

Back

There are 2 elements.