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quester [9]
3 years ago
11

Help asappppppppppppppppppppp

Chemistry
2 answers:
astra-53 [7]3 years ago
7 0
The answer if calculated correctly, is 12.
galina1969 [7]3 years ago
6 0
The answer should be 12 since 4 x 3 = 12

This is because ammonia is NH^3 and if it has a number before it you multiply it with the rest of the chemical equation.

I hope this helps

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Answer:

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Explanation:

Molar weight of H_{2}O = 16 + 2 = 18g

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18g\longrightarrow1\:mole\:of\:H_{2}O\\12.4g\longrightarrow\frac{12.4}{18}=0.689\:moles\:of\:H_{2}O

Hence, 12.4g of water has 0.689 moles of water.

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