May someone help me with these calculations?
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Chemistry, 22.06.2019 18:50
Asample of tin (ii) chloride has a mass of 0.49 g. after heating, it has a mass of 0.41 g. what is the percent by mass of water in the hydrate? %
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How many significant figures are in the following numbers ? a. 0.0002030 b. 2.000 c. 2.008900 d. 145.00
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Ajar is tightly sealed at 22°c and 772 torr what is the pressure inside a jar after its been heated to 178°c
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