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gogolik [260]
2 years ago
13

Which of the following chemical equations is NOT correctly balanced?

Chemistry
1 answer:
forsale [732]2 years ago
6 0
To see if an equation is balanced, make sure that each side of the reaction has an equal number of the types of atoms.  The one that has a mismatch is A
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Flauer [41]
Molar mass:

1 \ mol \ H_2O_2 = 34.0147 \ g \  H_2O_2

Grams to moles:

(210 \ g \ H_2O_2) * ( \frac{1 \ mol \  H_2O_2 }{34.0147 \ g \ H_2O_2}) = 6.17 \ mol \ H_2O_2

Moles to atoms (Avogadro's number):
1 \ mol = 6.022 * 10^{22} \ particles
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Answer:
= 7.43 * 10^{23} \ H \ atoms
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