Stiochiometry mass to mass

What are the conversion factors necessary for mass mass stoichiometry reaction problems?

• Molar rotation

• Mole ratios

• Molar velocity

• Molar mass

Tags

NGSS.HS-PS1-7

What is the first thing you must do to solve a stoichiometry problem?

• Write a Balanced Equation

• Panic

• Write an Unbalanced Equation

• Ask for help

CH₄ + 2O₂ --> 2H₂O + CO₂
What is the mass of CO₂ produced when 35g of O₂ reacts? 

• 1.09 g
• 24.1 g
• 28.2 g
• 44.0 g

"If 0.45 mol of ammonium phosphate are consumed how many moles of ammonium nitrate are produced?"

Is what type of stoich problem?

• g --> mol

• mol --> g

• mol --> mol

• g --> g

"1.50 mol of lead (II) phosphate are produced what mass of lead (II) nitrate were used?"

Is what type of stoich problem?

• mol --> mol

• mol --> g

• g --> mol

• g --> g

Tags

NGSS.HS-PS1-7

Aluminum will react with sulfuric acid in the following reaction:

2 Al_(s) + 3 H₂SO_4(l) → Al₂(SO₄)_3(aq) + 3 H_2(g)

_{If you're given a mass for aluminum and asked to solve for mass of hydrogen which is the correct mole ratio to use?}

• 2/3

• 3/2

True or False. You must convert grams to moles to do stoichiometry.

• True
• False

Tags

NGSS.HS-PS1-7

Given the following equation:

CO2 + H2O→H2CO3 

How many grams of CO2 are needed to react with 3.6 grams of H2O? 

• 1.8 g

• 8.8 g

• 3.6 g

• 7.2 g

Tags

NGSS.HS-PS1-7

Given the following equation:

2Al + 6HCl → 2AlCl3 + 3H2

If 3.00 grams of H2 were produced, how many grams of Al reacted?

• 108.0 g

• 60.8 g

• 27.0 g

• 0.33 g

Tags

NGSS.HS-PS1-7

Consider the following balanced equation:

2Fe(OH)3 → Fe2O3 + 3H2O

How many grams of Fe2O3 are produced if 10.7 grams of Fe(OH)3 react in this way?

The molar mass of Fe(OH)3 is 107 g/mol.

The molar mass of Fe2O3 is 159.7 g/mol.

Round your answer to the nearest integer.

• 32.0 grams

• 8.00 grams

• 16.0 grams

• 24.0 grams

• 48.0 grams

Tags

NGSS.HS-PS1-7