Counting Atoms

Front

What is the chemical formula for three hydrogen (H), one sulfur (S), and four oxygen (O)?

Back

H₃SO₄

Front

How many atoms of carbon are in the formula C₃H₅(NO₃)₃?

Back

3

Front

How many hydrogen atoms are in the formula C₆H₁₂O₆?

Back

12

Front

What is the total number of elements in the chemical formula NaHCO₃?

Back

4

Front

How many sodium (Na) atoms are in 6NaCl?

Back

6

Front

What does the subscript in a chemical formula indicate?

Back

The number of atoms of the element in the molecule.

Front

In the formula C₃H₅(NO₃)₃, how many oxygen atoms are present?

Back

9

Front

What is the significance of parentheses in a chemical formula?

Back

They indicate that the atoms inside are grouped together and the subscript outside applies to all atoms within the parentheses.

Front

How do you determine the number of atoms of each element in a chemical formula?

Back

Count the number of atoms indicated by the subscripts for each element.

Front

What is the formula for one sulfur (S), two hydrogen (H), and four oxygen (O)?

Back

H₂SO₄