Interpretation of Your Results Use the spaces provided for the answers and aditi

Question

Interpretation of Your Results Use the spaces provided for the answers and aditional paper if necessary 1. Name your ionic hydrate. 2. Write a balanced chemical the crucible. equation showing what happened when you heated your ionic hydrate in 3. Ho w many grams of water are present in 5.00 g of your ionic hydrate? desiccant is an anhydrous compound that absorbs water vapor from the atmosphere. The more water it can absorb per gram, the better a desiccant it is. Explain which of the following compounds would make the best desiccant: your anhydrous compound, CaSO, or C 4. A uSo,

Explanation / Answer

the molar mass of MgSO4 x 7H2O is 246.5 g / mol

you have 5 grams of compound

moles = mass / molar mass = 5 / 246.5 = 0.020 moles of compound

1 mole of ionic hydrate compound produce 7 moles of water so

0.02 * 7 = 0.14 moles of water

water has a molar mass of 18 g / mol

so mass of water is 0.14 * 18 = 2.52 grams of water

b) the CaSO4 in its hydrate form is able to get 2 moles of water

CaSO4 * 2 H2O

The CuSO4 can get hydrated like

CuSO4 * 5 H2O

your compound can take 7 moles of water so i would say that MgSO4 is a better dessicant

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