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Chemistry- questions about solubility?

These are some pre-lab questions for my chemistry lab of finding the solubility curve of a certain compound.

  1. Determine the solubility of sodium sulfate (Na2SO4),in grams per 100g of water, if 0.94 g of Na2SO4 in 20g of water results in a saturated solution.

  2. A student stated that the solubility of potassium chloride at 20'C (degrees celsius) was 36 g per 100 g of solution. What is wrong with this statement?

Thanks in advance!!

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