Percentage of Water in Hydrate

A hydrate of magnesium chloride is present and the following data is collected:

mass of crucible = 22.05 grams

mass of crucible + hydrate = 25.95 grams

mass of crucible and contents after heating = 23.19 grams

What is the percentage of water in this hydrate?

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A 14.67 g sample of a hydrate of magnesium carbonate was heated to drive off the water. The mass was reduced to 8.93 g. What is the percentage of water lost?

Tags

NGSS.MS-PS1-5

Crucible, cover: 17.8 g

Crucible, cover, and hydrate: 23.9g

Crucible, cover, and salt: 21.5g

Calculate % of water lost.

Tags

NGSS.MS-PS1-4

A hydrate of copper sulfate is heated and the following data is collected: mass of crucible = 18.50 grams, mass of crucible + hydrate = 24.50 grams, mass of crucible and contents after heating = 21.00 grams. What is the percentage of water in this hydrate?

• 25.00%

• 30.00%

• 35.00%

• 40.00%

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

A 20.00 g sample of a hydrate of sodium carbonate was heated to drive off the water. The mass was reduced to 14.20 g. What is the percentage of water lost?

• 28.50%

• 29.00%

• 29.50%

• 30.00%

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Crucible, cover: 15.0 g, Crucible, cover, and hydrate: 20.0 g, Crucible, cover, and salt: 17.0 g. Calculate % of water lost.

• 15.00%

• 20.00%

• 25.00%

• 30.00%

Tags

NGSS.MS-PS1-4

A hydrate of barium chloride is present and the following data is collected: mass of crucible = 30.00 grams, mass of crucible + hydrate = 36.00 grams, mass of crucible and contents after heating = 33.00 grams. What is the percentage of water in this hydrate?

• 16.67%

• 20.00%

• 25.00%

• 30.00%

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A 25.00 g sample of a hydrate of calcium sulfate was heated to drive off the water. The mass was reduced to 18.75 g. What is the percentage of water lost?

• 20.00%

• 25.00%

• 30.00%

• 35.00%

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Crucible, cover: 12.5 g, Crucible, cover, and hydrate: 18.5 g, Crucible, cover, and salt: 15.5 g. Calculate % of water lost.

• 16.67%

• 20.00%

• 25.00%

• 30.00%

Tags

NGSS.MS-PS1-4

A hydrate of zinc sulfate is heated and the following data is collected: mass of crucible = 22.00 grams, mass of crucible + hydrate = 28.00 grams, mass of crucible and contents after heating = 25.00 grams. What is the percentage of water in this hydrate?

• 25.00%

• 30.00%

• 35.00%

• 40.00%

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5