Dilutions and Molarity Calculations

Presentation

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Chemistry

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10th - 12th Grade

•

Practice Problem

•

Medium

•

NGSS

HS-PS1-5, HS-PS1-7

Standards-aligned

Kirsten Ward

Used 134+ times

FREE Resource

13 Slides • 8 Questions

Dilutions and Molarity Calculations

take notes on paper/chromebook

Multiple Choice

What is a mole?

6.022 x 10²³ items

a fuzzy critter

a chemistry thing

REVIEWING:

Calculating Molar Mass

Na₂CO₃
Ca(NO₃)₂

Fill in the Blanks

Type answer...

Multiple Choice

A measure of how much solute is dissolved in solution or "strength" of solution is called......

concentrated

concentration

dilute

dilution

DEMONSTRATION: 1 Mol in the beaker - fill in the Teachermade chart as we go

2000 mL = .5 Molar
1000 mL = 1 M
500 mL = 2 M
250 mL = 4 M
100 mL = 10 M

2 Mol in the beaker - fill in the Teachermade chart as we go

2000 mL = 1 Molar
1000 mL = 2 M
500 mL = 4 M
250 mL = 8 M
100 mL = 20 M

3 Mol in the beaker - fill in the Teachermade chart as we go

2000 mL = 1.5 Molar
1000 mL = 3 M
500 mL = 6 M
250 mL = 12 M
100 mL = 30 M

1/2 Mol in the beaker - fill in the Teachermade chart as we go

2000 mL = .25 Molar
1000 mL = .5 M
500 mL = 1 M
250 mL = 2 M
100 mL = 5 M

Multiple Choice

How do chemists describe the "strength" or concentration of a solution?

molarity

concentrated

diluted

strong

Multiple Choice

How do chemists calculate molarity?

grams/mole

moles/Liter

ounces/container

Multiple Choice

What is the molarity of 0.50 moles of NaCl in 0.25 L of solution

1 M

1/2 M

2 M

1.5 M

Multiple Choice

The higher the molarity, the ________ the solution

more concentrate

less concentrated

Multiple Choice

The lower the molarity, the ________ the number of particles in the solution

fewer

greater

Dilutions and Molarity Calculations

take notes on paper/chromebook

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