# Counting Atoms Question Preview (ID: 38972)

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Practice For Atoms.[print questions]

**How many oxygen atoms in 3CO2 ?**

a) 2

b) 4

c) 8

d) 6

**How many magnesium atoms are in this equation: Mg2N3**

a) 1

b) 2

c) 3

d) 4

**How many ELEMENTS are in this equation: Mg2N3**

a) 1

b) 2

c) 3

d) 4

**How many oxygen atoms are in this equation: 2NaHCO3**

a) 3

b) 4

c) 6

d) 8

**How many TOTAL atoms are in this equation: NaHCO3**

a) 3

b) 4

c) 6

d) 7

**How many sodium are in this equation: NaCl**

a) 1

b) 2

c) 4

d) 3

**How many atoms are in this equation: NaCl**

a) 1

b) 3

c) 2

d) 4

**How many hydrogen atoms in 2HOH ?**

a) 4

b) 6

c) 2

d) 1

**How many sodium atoms in 5NaClS ?**

a) 1

b) 3

c) 5

d) 15

**How many TOTAL atoms in 4NaCl ?**

a) 4

b) 2

c) 6

d) 8

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