
Calcium Nitrate and Water Composition
Interactive Video
•
Chemistry
•
9th - 10th Grade
•
Hard

Emma Peterson
FREE Resource
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8 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the chemical formula for calcium nitrate tetrahydrate?
Ca(NO3)2·3H2O
Ca(NO3)2·4H2O
Ca(NO3)2·2H2O
Ca(NO3)2·6H2O
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the molar mass of water used in the calculation?
22.02 grams per mole
16.02 grams per mole
20.02 grams per mole
18.02 grams per mole
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many water molecules are associated with calcium nitrate in the compound?
Four
Six
Two
Three
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the molar mass of the entire compound Ca(NO3)2·4H2O?
236.19 grams per mole
250.19 grams per mole
240.19 grams per mole
230.19 grams per mole
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the percent composition by mass of water in the compound?
25.52%
30.52%
40.52%
35.52%
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why might your calculated percent composition differ slightly from the video?
Due to incorrect molar mass of the compound
Due to incorrect number of water molecules
Due to incorrect molar mass of water
Due to rounding differences in the periodic table
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the percent composition by mass tell us about the compound?
The volume of water in the compound
The number of water molecules in the compound
The mass of water in a sample of the compound
The total mass of the compound
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Who is the presenter of the video?
Dr. C
Dr. A
Dr. D
Dr. B
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