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SashulF [63]
3 years ago
7

Which sentence explains why gases can change volume but liquids cannot?

Chemistry
2 answers:
choli [55]3 years ago
8 0

Answer: Molecules of gas are usually far apart and can be compressed unlike molecules of liquids.

Explanation:

The molecules of gases are usually far apart, moving freely and randomly, occupying extra space in the containing vessel. Hence, when compressed to become closely packed, gases have lower volume.

However, unlike gases, the molecules of a liquid are restricted, move less freely and occupy no extra space. Hence, liquids cannot be compressed, and their volume remains the same in their containing vessel.

Natasha_Volkova [10]3 years ago
6 0

Answer: The forces holding atoms together are stronger in a liquid than in a gas

Explanation:

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How many moles of oxygen are formed when 58.6 g of KNO3 decomposes according to the following reaction? 4 KNO3(s) → 2 K2O(s) + 2
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0.725 mol

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Moles are calculated as the given mass divided by the molecular mass.

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moles = ( mass / molecular mass )

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By the decomposition of 4 mol of KNO₃ , 5 mol of O₂ are formed ,

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0.58 mol of KNO₃ , gives , 0.725 mol of O₂

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