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geniusboy [140]
3 years ago
6

What is the maximum amount of kcl that can dissolve in 200 g of water? (the solubility of kcl is 34 g/100 g h2o at 20°c.)?

Chemistry
2 answers:
Svetllana [295]3 years ago
8 0
The correct answer is 68 g
hope this helps!!
Oksi-84 [34.3K]3 years ago
3 0

Answer:

68 grams is the maximum amount of KCl that can be dissolve in 200 g of water.

Explanation:

Let the maximum amount of KCl dissolved in water be x

Solubility of KCl in water = 34g /100 g

This means that  34 g of KCl can be dissolved in 100 g of water at 20°C

Maximum amount of KCl dissolved in  1 g of water = \frac{34}{100} g

Maximum amount of KCl dessolbved in 200 g of water :

\frac{34}{100}\times 200=68 g

68 grams is the maximum amount of KCl that can be dissolve in 200 g of water.

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9.05 mol of oxygen gas to g of oxygen gas
NARA [144]
Molar mass of oxygen gas:

O₂ = 16 * 2 = 32.0 g/mol

1 mole O₂ -------------- 32.0
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Mass = 9.05 * 32.0

Mass = 289.6 g of O₂

hope this helps!
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