Stoichiometry and Balanced Equations

SiO₂ + 3C → SiC + 2CO

Using the balanced equation how many moles of Carbon monoxide would be produced from 6 moles of carbon?

HINT: Mole to Mole Conversion

• 112.0 mol CO

• 4.0 mol CO

• 28.0 mol CO

• 48.0 mol CO

2Na + 2H₂O → 2NaOH+ H₂

How many grams of hydrogen are produced if 120 g of Na are available?

HINT: Requires 3 Conversions

• 5.2 g

• 2.6 g

• 690 g

• 45 g

2 KClO₃ → 2 KCl + 3 O₂

How many moles of oxygen are produced when 6.7 moles of KClO₃ decompose completely?

HINT: Mole to Mole Conversion

• 6.7 mol

• 1.0 mol

• 10.1 mol

• 4.5 mol

Using the following equation:

Fe₂O₃(s) + 3H₂(g) → 2Fe(s) + 3H₂O(l)

How many moles of iron can be made from 6 moles H₂?

HINT: Mole to Mole Conversion

• 4 moles Fe

• 6 moles Fe

• 9 moles Fe

• 2 moles Fe

For the reaction represented by the equation

Cl₂ + 2KBr → Br₂ + 2KCl,

how many grams of potassium chloride can be produced from 356 grams potassium bromide?

HINT: Requires 3 Conversions

• 749 g

• 225 g

• 479 g

• 814 g

How many moles are in 16.94g of water?

HINT: Mass to Mole Conversion

• 16.94 mol H₂O

• 0.9401 mol H₂O

• 305.3 mol H₂O

• 1.063 mol H₂O

How many moles of copper are 4.57 x 10¹³ atoms of copper?

HINT: Mole to Atoms/Molecules Conversion

• 7.59 x 10^-11 moles

• 2.75 x 10³⁷ moles

• 7.59 x 10¹¹ moles

• 2.75 x 10³³ moles

What is the molar mass of dihydrogen dioxide (H₂O₂)?

• 48 g/mole
• 34.02 g/mole
• 36.5 g/mole
• 35.5 g/mole

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