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USPshnik [31]
3 years ago
11

Which of the following is NOT a variable property for a gas?

Chemistry
2 answers:
Alex_Xolod [135]3 years ago
5 0
Mass, air has that. Since what fills up a balloon? A gas
Shape, it has no definite shape. This one is accurate, it has no definite shape, it takes the shape of the object it's in.
Volume, does air take up space? If it does then yep. Balloon example/
Density, yes it does, because it's tightly wounded up.

D
alexandr1967 [171]3 years ago
5 0

Answer:

Mass

Explanation:Gases are matter, they have volume, their volume is variable. Gas can be compressed like in a bike tire, so it changes shape. As a substance changes from a solid to a liquid to a gas its density generally decreases. So gas has volume, shape and density.

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What is the difference between reflected, absorbed, and transmitted light
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Answer: reflection is the process by which electromagnetic radiation either at the boundary between two media or at the interior of a medium whereas transmission is the passage of electromagnetic radiation through a medium

Explanation:

I learned about it

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3 years ago
A 1.547 g sample of blue copper(II) sulfate pentahydrate, ‍ , is heated carefully to drive off the water. The white crystals of
sweet [91]

Answer:

=6.2x10^{-3}mol CuSO_4

Explanation:

Hello,

By developing the following stoichiometric relationship, the required amount could be found as follows:

- Moles of CuSO_4:

1.547gCuSO_4.5H_2O *\frac{1molCuSO_4.5H_2O}{249.5gCuSO_4.5H_2O} *\frac{1mol CuSO_4}{1mol CuSO_4.5H_2O} =6.2x10^{-3}mol CuSO_4

- Grams of CuSO_4

1.547gCuSO_4.5H_2O *\frac{1molCuSO_4.5H_2O}{249.5gCuSO_4.5H_2O} *\frac{1mol CuSO_4}{1mol CuSO_4.5H_2O}*\frac{159.5g CuSO_4}{1mol CuSO_4} =0.989 g CuSO_4

- Moles of water:

1.547gCuSO_4.5H_2O *\frac{1molCuSO_4.5H_2O}{249.5gCuSO_4.5H_2O} *\frac{5mol H_2O}{1mol CuSO_4.5H_2O}=0.031mol H_2O

Finally, one could see that the mass of the anhydrous compound is less than the pentahydrated compound since it is waterless.

Best regards.

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