Molar Ratio Practice

Select the correct molar ratio taken from this balanced equation:

4 Al + 3 O₂ --> 2 Al₂O₃

• 1 mol Al = 1 mol Al₂O₃

• 4 Al = 2 Al₂O₃

• 4 mol Al = 2 mol Al₂O₃

• 4 mol Al = 2 mol Al

Tags

NGSS.HS-PS1-7

Select the correct molar ratio taken from this balanced equation:

1 N­₂ + 3 H₂ --> 2 NH₃

• 1 N­₂ = 3 H₂

• 1 mol N­₂ = 2 mol NH₃

• 2 mol N­₂ = 1 mol NH₃

• 3 mol N­₂ = 3 mol NH₃

Tags

NGSS.HS-PS1-7

Select the coefficients that correctly balance the following skeleton equation:

__ H₂O --> __ H₂ + __ O₂

• 2 --> 2, 1

• 1 --> 1, 2

• 4 --> 2, 2

• 2 --> 2, 4

Tags

NGSS.HS-PS1-7

Select the coefficients that correctly balance the following skeleton equation:

__ N₂ + __ H₂ --> __ NH₃

• 2, 6 --> 4

• 3, 1 --> 2

• 6, 2 --> 4

• 1, 3 --> 2

Tags

NGSS.MS-PS1-5

4 Al + 3 O₂ --> 2 Al₂O₃

_{How many moles of} Al₂O_{3 will be produced from 250.0 g of Al?}

_{( 26.982 g Al = 1 mol Al)}

• 18.531 mol Al₂O₃

• 4.633 mol Al₂O₃

• 6.949 mol Al₂O₃

• 12.354 mol Al₂O₃

Tags

NGSS.HS-PS1-7

1 N­₂ + 3 H₂ --> 2 NH₃

How many moles of NH₃ will be produced from 10.2 x 10^25 molecules of H₂?

(6.02 x 10^23 molecules H₂= 1 mol H₂)

• 113 mol NH₃

• 254 mol NH₃

• 169 mol NH₃

• 508 mol NH₃

Tags

NGSS.HS-PS1-7