Counting Atoms Practice

Front

What is the total number of atoms in H₂SO₄?

Back

7

Front

How many Sodium atoms are in 6NaCl?

Back

6

Front

How many atoms of chlorine are present in 4 NaCl?

Back

4

Front

How many elements are present in the compound Mg₂As₃COHNi₂?

Back

6

Front

How many atoms of Oxygen are in Fe(NO₃)₃?

Back

9

Front

What is the formula to calculate the total number of atoms in a compound?

Back

Add the subscripts of all elements in the formula.

Front

What does the subscript in a chemical formula represent?

Back

The number of atoms of that element in the molecule.

Front

In the compound NaCl, how many total atoms are there?

Back

2 (1 Sodium + 1 Chlorine)

Front

What is the significance of the coefficient in a chemical formula?

Back

It indicates the number of molecules or formula units.

Front

How many atoms are in 2H₂O?

Back

6 (4 Hydrogen + 2 Oxygen)