The formula for copper(II)sulfate pentahydrate is CuSO4 * 5H2O Remember that this shows that water is attached to the CuSO4 and is part of the total formula. Questions 1- 4 pertain to the formula. Show any calculations.
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QUIZ # 1
NAME:
______________________
The formula for copper(II)sulfate pentahydrate is
CuSO4 *
5H2O Remember that this shows that water is attached to the CuSO4
and is part of the total formula. Questions 1- 4 pertain to the formula. Show
any calculations.
1. Calculate the molar mass of the compound.
2 .How many moles of water would be attached to 5
moles of the compound?
3. How many moles of oxygen atoms are present in I
mole of the compound?
4. What is the % by weight of copper in the
compound?
5. The empirical formula for a certain molecule is
CH2O and the molecule has a molar mass of 60.24. What is the
molecularformula for the compound?
6. How many moles of ZnCl2 are contained
in 68.20g of ZnCl2?
7. How many grams of KCl would be required to get
0.025 moles of KCl?
Questions 8 – 10 Balance and identify each reaction
type.
___H3PO4 +__NaOH à ___ Na3PO4
+ ___ HOH
___CuNO3 + ___Mg à ___Mg(NO3)2 +
___Cu
___C2H6O + O2
à ___CO2 + ___H2O
