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sertanlavr [38]
2 years ago
8

What will happen when substances go through chemical changes

Chemistry
1 answer:
DanielleElmas [232]2 years ago
6 0
When going through a chemical change, the substance will never return to its original place.
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Explanation:

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3 years ago
A flask containing helium gas is connected to an open-ended mercury manometer. The open end is exposed to the atmosphere, where
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Answer:

726 torr

Explanation:

Generally, atmospheric pressure can be measured using a manometer which is in form of a U-shaped tube. In addition, 1 mm Hg is equivalent to 1 torr. Therefore, 752 torr is equivalent to 752 mm Hg. Therefore, the total pressure will be equivalent to the atmospheric pressure (mm Hg) + the mercury height.

In this case, the mercury height = -26 mm

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