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WorksheetsHydrates Plus
Total questions: 11
Worksheet time: 19mins
What is the percent composition by mass of sulfur in the compound MgSO4 ?
20%
27%
46%
53%
What is the percent composition by mass of oxygen in the compound MgSO4 ?
20%
27%
46%
53%
A compound is a hydrate when it...
is composed of only hydrogen and oxygen
is a state of water
is an ionic compound with water losely attached
repels water from the compound
In the performance of the copper II sulfate hydrate lab a visual indicator that water was still present was
the substance was blue
the substance turned white
the substance fizzed
the substance changed temperature
What is the percent composition of MgSO4 in the following ionic compound: MgSO4*7H2O
What is the percent composition of water in the hydrate: NaCl * 5H2O
A 15.67 g sample of a hydrate of magnesium carbonate was heated to drive off the water. The mass was reduced to 7.58 g. What is percent composition of water?
beaker: 19.8 g
beaker and hydrate: 23.0g
beaker and salt after heating: 21.5g
Calculate % of water lost.
90.0%
46.9%
39.3%
45.5%
