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ArbitrLikvidat [17]
3 years ago
9

Which of the following is an example of a phase change from liquid to gas?

Chemistry
2 answers:
sesenic [268]3 years ago
8 0
C.Water evaporating is the correct answer
You can go for it
netineya [11]3 years ago
6 0
Correct answer to this question is c. water evaporating
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Nitroglycerin (c3h5n3o9) is a powerful explosive. its decomposition may be represented by 4c3h5n3o9 → 6n2 12co2 10h2o o2 this re
professor190 [17]
The balanced chemical reaction describing this decomposition is as follows:
<span>4c3h5n3o9 .............> 6N2 + 12CO2 +10H2O + O2

From the periodic table:
mass of oxygen = 16 grams
mass of nitrogen = 14 grams
mass of hydrogen = 1 gram
mass of carbon = 12 grams
Therefore:
mass of </span><span>C3H5N3O9 = 3(12) + 5(1) + 3(14) + 9(16) = 227 grams
mass of O2 = 2(16) = 32 grams

From the balanced chemical equation:
4(227) = 908 grams of </span>C3H5N3O9 produce 32 grams of O2. Therefore, to know the amount of oxygen produced from 4.5*10^2 grams <span>C3H5N3O9, all we need to do is cross multiplication as follows:
amount of oxygen = (4.5*10^2*32) / (908) = 15.859 grams</span>
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3 years ago
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Which statement describes a strong acid?
masya89 [10]

Answer:

A

Explanation:

B describes a strong base, C just isn't true there are only 7 strong acids, D describes a weak acid

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3 years ago
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HHHAAAAALLLPPPP<br><br> It’s due tomorrow
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Hopefully this helped :)

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What is the volume of a box measuring 2cm by 3cm by 4cm?
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I The answer is 42 cubic cm

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Which element had the longest effect on human history?
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Oxygen I guess :)))       

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