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WorksheetsMore calculation on moles for gas and solutions
Total questions: 10
Worksheet time: 16mins
Name
Class
Date
1.
Which of the following would have more mass?
a)
1 mole of Li
b)
1 mole of Au
c)
1 mole of Si
d)
None, all are equal
2.
How do I change from moles to liters?
a)
divide by 22.4
b)
multiple by Avo number
c)
multiply by 22.4
d)
multiply by molar mass
3.
How many atoms are in a mole?
a)
6.022x10^23
b)
1
c)
Molar Mass
d)
22.4
4.
How many liters are in a mole?
a)
6.022x10^23
b)
1
c)
Molar Mass
d)
22.4
5.
How many grams are in a mole?
a)
6.022x10^23
b)
1
c)
Molar Mass
d)
22.4
6.
Mg3N2(s) + 3H2O(l) ––> 3 MgO + 2NH3(g)
If 10.3 g of magnesium nitride is used, what volume of ammonia gas would be collected at 20˚C and 0.989 atm?
If 10.3 g of magnesium nitride is used, what volume of ammonia gas would be collected at 20˚C and 0.989 atm?
a)
27.1 L H2
b)
4.96 L H2
c)
0.204 L H2
d)
10.3 L H2
7.
What is the molar volume of an ideal gas at STP?
a)
1 mol = 22.4 L
b)
1 mol = 0.0821 L
c)
1 mol = 1 L
d)
1 mol = 273 L
8.
What is the volume of 2 moles of gas at STP?
a)
22.4 L
b)
44.8 L
c)
11.2 L
d)
2 L
9.
A copper block has a mass of 15.89 g. How many moles of copper are present in the block?
a)
0.25 mol
b)
1.25 mol
c)
4.00 mol
d)
6.25 mol
10.
How many particles are contained in 1 mole of any substance?
a)
3.0 x 1023
b)
6.0
c)
6.0 x 1023
d)
22.4
e)
The number of particles will change depending on the substance
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