From the solubility curve, which of these salts is most soluble at 0°C?
2 answers:
Answer:- C. .
Explanations:- From solubility curve, the solubility of sodium chloride at 0 degree C is around 36 g per 100 g of water.
Solubility of potassium bromide at 0 degree C is 60 g per 100 g of water.
solubility of sodium nitrate at 0 degree C is 70 g per 100 g of water and the solubility of potassium nitrate at 0 degree C is 13 g per 100 g of water.
Since the solubility of sodium nitrate is highest, the right choice is C. .
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The mass of I₂ that contains 2.57×10²⁵ molecules is 10843.52 g
From a detailed understanding of Avogadro's hypothesis, we understood 1 mole of any substance contains 6.02×10²³ molecules. This implies that 1 mole of I₂ also 6.02×10²³ molecules i.e
<h3>6.02×10²³ molecules = 1 mole of I₂</h3>Recall:
1 mole of I₂ = 2 × 127 = 254 g
Thus,
<h3>6.02×10²³ molecules = 254 g of I₂</h3>With the above information, we can obtain the mass of I₂ that contains 2.57×10²⁵ molecules. This is illustrated below:
6.02×10²³ molecules = 254 g of I₂
Therefore,
2.57×10²⁵ molecules =
Thus, the mass of I₂ that contains 2.57×10²⁵ molecules is 10843.52 g
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