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OLEGan [10]
3 years ago
13

1. When water is evaporated from a copper sulfate solution, copper sulfate remain.​

Chemistry
1 answer:
djverab [1.8K]3 years ago
6 0
Evaporation is used to separate a soluble solid from a liquid. For example, copper sulfate is soluble in water – its crystals dissolve in water to form copper sulfate solution. During evaporation, the water evaporates away leaving solid copper sulfate crystals behind.
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42.9 liters of hydrogen are collected over water at 76.0 °C and has a pressure of 294 kPa. What would the pressure (in kPa) of t
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Answer:

494.1 kPa

Explanation:

Using the combined gas law equation;

P1V1/T1 = P2V2/T2

Where;

P1 = initial pressure (kPa)

P2 = final pressure (kPa)

V1 = initial volume (L)

V2 = final volume (L)

T1 = initial temperature (K)

T2 = final temperature (K)

According to the information provided in this question,

P1 = 294 kPa

P2 = ?

V1 = 42.9 liters

V2 = 22.8 liters

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T2 = 38.7°C = 38.7 + 273 = 311.7K

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Cross multiply

36.14 × 311.7 = 22.8P2

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P2 = 494.1 kPa

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