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Elodia [21]
3 years ago
5

Which of the following is an anion of 14N? 14N5+ 14N3- 15N

Chemistry
1 answer:
Stella [2.4K]3 years ago
4 0
The answer is 15n...
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What is the mass of water necessary to generate 11.2 L of hydrogen gas if calcium metal reacts with water at standard temperatur
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Answer:

The mass of water is 18 g

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Ca + 2H₂O --------->Ca(OH)₂ +H₂

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what mass of 2H₂O will produce 11.2L of  H₂ ?

Mathematically,

22.4 L ----------------------------------> 36g

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Cross and multiply, to obtain the expression below

= (11.2 X 36)/22.4

= 18 g

Therefore, the mass of water is 18 g

5 0
2 years ago
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