This experiment was set up to test the hypothesis that a sugar cube will dissolve faster in hot water than in cold water. 90° C.
100C
The size of the sugar cube and the amount
water
The temperature of the water
How fast the sugar cube dissolves
Sugar dissolves faster in warm water than it does in cold water
11 Independent Variable
:: Dependent Variable
1. Conclusion
* Constants

Astudent is given a sample of a blue copper sulfate hydrate. he weighs the sample in a dry covered porcelain crucible and got a mass of 23.875 g for the crucible, lid, and sample. the mass of the empty crucible and lid was found earlier to be 22.652 g. he then heats the crucible to expel the water of hydration, keeping the crucible at red heat for 10 minutes with the lid slightly ajar. on colling, he finds the mass of crucible, lid, and contents to be 23.403 g. the sample was changed in the process to very light clue anhydrous cuso4. if there are again 100.0 g of hydrate, how many grams of cuso4 are in it? how many moles of cuso4? (hint: molar mass of cuso4 = 159.6 g / mole. what per cent of the hydrate is cuso4? you may convert the mass of cuso4 to moles.)

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

Which substance can be broken down by chemical means