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# In the laboratory, hydrogen gas is usually made by the following reaction:Zn(s) + 2 HCl(aq) → H2(g)

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In the laboratory, hydrogen gas is usually made by the following reaction:

Zn(s) + 2 HCl(aq) → H2(g) + ZnCl2(aq)

How many liters of H2 gas, collected over water at an atmospheric pressure of 752 mm Hg and a temperature of 21.0°C, can be made from 2.566 g of Zn and excess HCl? The partial pressure of water vapor is 18.65 mm Hg at 21.0°C.
A) 0.0701 L
B) 0.939 L
C) 0.959 L
D) 0.981 L
Textbook

## Introductory Chemistry Essentials

Edition: 5th
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hbutler2hbutler2
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Anonymous
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2 months ago
 How many liters of H2 gas, collected over water at an atmospheric pressure of 752 mmHg and a temperature of 21.0 C, can be made from 3.566 g of Zn and excess HCl? The partial pressure of the water vapor is 18.65 mmHg at 21.0 C Attached file(s) Thumbnail(s): You must login or register to gain access to these attachments.
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