What is a hydrate?

Hydrates and Molar Mass Calculations

Interactive Video
•
Chemistry, Mathematics, Science
•
9th - 10th Grade
•
Hard

Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A compound with water molecules bound to it
A compound without any water
A compound that evaporates quickly
A compound that is always dry
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in determining the percent of water in a hydrate?
Determine the volume of the compound
Find the density of the compound
Calculate the mass of water in the compound
Calculate the mass of the entire compound
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you calculate the mass of water in barium hydroxide octahydrate?
Add the number of water molecules to the molar mass of water
Divide the number of water molecules by the molar mass of water
Multiply the number of water molecules by the molar mass of water
Subtract the number of water molecules from the molar mass of water
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the molar mass of water used in the calculation?
16.02 grams per mole
22.02 grams per mole
20.02 grams per mole
18.02 grams per mole
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the molar mass of barium used in the calculation?
139.33 grams per mole
135.33 grams per mole
140.33 grams per mole
137.33 grams per mole
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many moles of hydroxide are in barium hydroxide?
One mole
Four moles
Three moles
Two moles
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the total mass of barium hydroxide octahydrate?
320.51 grams per mole
325.51 grams per mole
310.51 grams per mole
315.51 grams per mole
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