Percentage of Water in Hydrate

A 4.4 gram sample of a hydrate was heated until the water of hydration was driven off. The anhydrous compound remaining had a mass of 3.3 grams. What is the percentage by mass of water in the hydrate?

• 75%

• 33%

• 67%

• 25%

Tags

NGSS.MS-PS1-4

What is the percentage of water in Ba(OH)₂•8H₂O ( Round your answer to the WHOLE NUMBER do not use any symbols)

Calculate the percent of water in a hydrate using the following information: Mass of hydrate 93.0 g, Mass of anhydrous compound 71.3 g ( Round answer to the tenth place and use no symbols in answer)

Calculate the percent by mass of water in the hydrate CuSO_4\cdot 5H_2O. Be sure to round all masses from the Periodic Table to the nearest tenth and round the percent water to the correct number of significant figures. Include the correct unit with your numerical answer.

• 36.08%

• 45.12%

• 51.14%

• 56.19%

A 10.0 gram sample of a hydrate was heated until the water of hydration was driven off. The anhydrous compound remaining had a mass of 7.5 grams. What is the percentage by mass of water in the hydrate?

• 25%

• 30%

• 35%

• 40%

Tags

NGSS.MS-PS1-4

Calculate the percent by mass of water in the hydrate CoCl_2\cdot 6H_2O. Be sure to round all masses from the Periodic Table to the nearest tenth and round the percent water to the correct number of significant figures. Include the correct unit with your numerical answer.

• 45.4%

• 36.0%

• 54.5%

• 48.0%

What is the percentage of water in MgCl_2\cdot 6H_2O?

• 51%

• 53%

• 55%

• 57%