Mole Calculation Worksheet Page 2
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1
2
36)
How many grams are in 11.9 moles of chromium?
7)
How many moles are in 9.8 grams of calcium?
8)
How many grams are in 238 moles of arsenic?
Solve the following:
9)
How many grams are in 4.5 moles of sodium fluoride, NaF?
(molar mass of NaF is 22.99 + 19.00 = 41.99 g/ mole)
190 g NaF
4.5 moles x 41.99 grams
= 188.955 g NaF =
1 mole
10)
How many moles are in 98.3 grams of aluminum hydroxide, Al(OH)
?
3
(molar mass of Al(OH)
is 26.98 + (3 x 16.00) + (3 x 1.01) = 78.01 g/ mole)
3
98.3 grams x
1 mole
=
1.2601 moles Al(OH)
=
3
1.26
moles Al(OH)
3
78.01 grams
11)
How many grams are in 0.02 moles of beryllium iodide, BeI
?
2
12)
How many moles are in 68 grams of copper (II) hydroxide, Cu(OH)
?
2
13)
How many grams are in 3.3 moles of potassium sulfide, K
S?
2
3
14)
How many moles are in 1.2 x 10
grams of ammonia, NH
?
3
-4
15)
How many grams are in 2.3 x 10
moles of calcium phosphate, Ca
(PO
)
?
3
3
2
-7
16)
How many moles are in 3.4 x 10
grams of silicon dioxide, SiO
?
2
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