Answer Happy

Data Table: Item Mass in grams
A. Empty aluminum cup 2.4 g
B. Cup and alum hydrate 4.4 g
C. Cup and anhydride after first heating 3.6 g
D. Cup and anhydride after second heating 3.4 g
1. Show your calculations for:
a. mass of hydrate before heating
b. mass of anhydride after removing the water
c. mass of water that was removed by heating
2. Calculate the moles of the twosubstances:
a. Molar mass of KAl(SO4)2 = _____________ grams/mole
b. Convert the mass in 1(b) to moles of KAl(SO4)2:
c. Molar mass of H2O = _____________ grams/mole
d. Convert the mass in 1(c) to moles of H2O:
3. To find the mole ratio of water to KAl(SO4)2, dividemoles H2O by moles KAl(SO4)2, then round to the nearestinteger:
4. Use the integer to write the hydrate formula youcalculated: KAl(SO4)2 • _____ H2O