Counting Atoms

How many Hydrogen are in 4H₂O?

• 6
• 8
• 2
• 4

Tags

NGSS.MS-PS1-1

How many Magnesium are in 10MgCl₂?

• 10

• 5

• 20

• 11

How many elements are in 5C₆H₁₂O₆?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

How many atoms are there TOTAL in:

10H₂SO₄

• 17

• 25

• 70

• 61

Tags

NGSS.MS-PS1-1

How many Sodium (Na) are in 6NaCl?

• 1

• 12

• 6

• 7

Tags

NGSS.MS-PS1-1

Number of H in 3(NH₄)₂CrO₄

• 4
• 2
• 8
• 24

Tags

NGSS.MS-PS1-1

The red numbers in the image below represent ________

• subscripts
• coefficients
• I don't know, and don't want to try
• None of the answers are correct

How many Oxygen (O) atoms are in 2C₂HO₈C_l2

• 2

• 16

• 8

• 5

Tags

NGSS.MS-PS1-1

How many hydrogen atoms are in 2 H₂?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

How many Iron (Fe) atoms are in this chemical formula?

• 2 iron atoms
• 6 iron atoms
• 5 iron atoms
• 4 iron atoms