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Which of these equations is balanced? a. 3 H2SO4 + 2Al → Al2(SO4)3 + 3H2 b. 2KCl + Pb(NO3)2 → 2KNO3 + PbCl2 A. a B. b C. a and b D. neither
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Apr 22, 2017
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Which of these equations is balanced?
a. 3 H2SO4 + 2Al → Al2(SO4)3 + 3H2
b. 2KCl + Pb(NO3)2 → 2KNO3 + PbCl2
A. a
B. b
C. a and b
D. neither
Chemistry
middle-school
Sam Gleske
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Both are already balanced. So, your answer would be:
C. a and b
KoKuToru
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Apr 23, 2017
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KoKuToru
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To calculate your answer:
list atoms
multiply by subcript outside parentheses
multiply by coefficient
3 H2SO4 + 2Al → Al2(SO4)3 + 3H2
H 2 x3 =6 H 2 x 3 = 6
S 1 x 3 = 3 S 1x 3 = 3
O 4 x3 = 12 O 4 x 3 = 12
Al 1 x 2 = 2 Al 2
This one is balanced . . . now you try the other one. Let me know if you still need help
Xgord
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Apr 28, 2017
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Xgord
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