Law of conservation of mass Practice

Which two formulas contain 4 atoms of hydrogen?

• 2H₂CO₃

• H₂O₂

• C₂H₆

• C₂H₄O₂

Tags

NGSS.MS-PS1-1

The following chemical equation is made up of two parts: the reactants and the products. How many total atoms are on the product side?

N₂ + 3H₂ -> 2NH₃

• 2

• 3

• 6

• 8

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In the formula for two molecules of zinc nitrate, 2 Zn(NO₃)₂, answer the following:

Number of zinc atoms? ______

Type the number only

Tags

NGSS.MS-PS1-1

In the formula for two molecules of zinc nitrate, 2 Zn(NO₃)₂, answer the following:

Number of oxygen atoms? ______

Type the number only

• 5

• 3

• 12

• 6

Tags

NGSS.MS-PS1-1

In the formula for two molecules of zinc nitrate, 2 Zn(NO₃)₂, answer the following:

Number of different elements? ______

Type the number only

Tags

NGSS.MS-PS1-1

In the formula for two molecules of zinc nitrate, 2 Zn(NO₃)₂, answer the following:

Coefficient Number? ______

Type the number only

Tags

NGSS.MS-PS1-1

In the formula for ammonium sulfate, (NH₄)SO₄, answer the following:

Number of nitrogen atoms? ______

Tags

NGSS.MS-PS1-1

In the formula for ammonium sulfate, (NH₄)SO₄, answer the following:

Number of oxygen atoms? ______

Tags

NGSS.MS-PS1-1

In the formula for ammonium sulfate, (NH₄)SO₄, answer the following:

Number of different Elements? ______

Tags

NGSS.MS-PS1-1

In the formula for ammonium sulfate, (NH₄)SO₄, answer the following:

Number of total atoms? ______

Tags

NGSS.MS-PS1-1