Counting Atoms Short Practice

Which is the correct formula for:  3 hydrogen, 1 sulfur, 4 oxygen

• H₃SO₄

• HSO₄

• H₄S₃O

• H₂O

What is the number of Na atoms in Na₂CO₃?

• 1

• 2

• 3

• 6

How many ELEMENTS are in the compound C₂H₈O ?

• 2

• 1

• 3

• 0

How many TOTAL ATOMS are in the compound C₂H₈O ?

• 11

• 2

• 8

• 1

How many Aluminum atoms are in Al₂O₃?

• 3

• 2

• 5

How many Sodium atoms are in 6NaCl?

• 1

• 12

• 6

How many ATOMS of Carbon are in this compound?

H₂C₃O₄N₅

• 2

• 3

• 4

• 5

How many Nitrogen atoms are in (NH₄)₂CrO₄?

• 1

• 2

• 8

• 16

How many Oxygen atoms are in Al₂(SO₄)₃?

• 4

• 12

• 7

• 24

How many Hydrogen atoms in 3(NH₄)₂CrO₄?

• 4

• 2

• 8

• 24