Moles Day 2

Presentation

•

Chemistry

•

10th Grade

•

Easy

•

NGSS

HS-PS1-7

Standards-aligned

Ana Rodriguez

Used 3+ times

FREE Resource

6 Slides • 7 Questions

Moles Day 2

Multiple Choice

What is the mass of 2 moles of sodium thiosulfate (gram formula mass = 158 g/mol).

What is the mass?

2 mol

159 g/mol

unknown

Multiple Choice

What is the mass of 2 moles of sodium thiosulfate (gram formula mass = 158 g/mol).

What is the number of moles?

2 mol

158 g/mol

unknown

Multiple Choice

What is the mass of 2 moles of sodium thiosulfate (gram formula mass = 158 g/mol).

What is the gram formula mass?

2 mol

158 g/mol

unknown

Open Ended

What is the mass of 2 moles of sodium thiosulfate (gram formula mass = 158 g/mol)?

mass = mass

mol = 2

gfm = 158

moles = mass/gfm

Type response here

Steps to finding the moles when gram formula mass is not given

Step 1: Find the gram formula mass
Step 2: Locate and Label your knowns
Step 3: Determine the unknown
Step 4: Substitute
Step 5: Solve

Example 1:

What is the mass of 3 moles of potassium nitrate [KNO3]?

Step 1: Find the gram formula mass

Example 1:

What is the mass of 3 moles of potassium nitrate [KNO3]?
Step 2: Locate and Label the knowns
Step 3: Determine the unknown
Step 4: Substitute
Step 5: Solve.

Example 2:

What is the mass of 0.75 moles of aluminum oxide [Al2O3]?

Step 1: Find the gram formula mass

Multiple Choice

Example 2:

What is the mass of 0.75 moles of aluminum oxide [Al2O3].

gfm = 102 g/mol

What is the mass?

0.75 mol

102 g/mol

unknown

Multiple Choice

What is the mass of 0.75 moles of aluminum oxide [Al2O3].

gfm = 102

What is the number of moles?

0.75 mol

102 g/mol

unknown

Multiple Choice

What is the mass of 0.75 moles of aluminum oxide [Al2O3].

gfm = 102

What is the gram formula mass?

0.75 mol

102 g/mol

unknown

Example 2: What is the mass of 0.75 moles of aluminum oxide [Al2O3].

mol = 0.75 mol
gfm = 102
mass = mass

Moles Day 2

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