1285g sample of na2so4 is exposed to the atmosphere and
1.285g sample of Na2SO4 is exposed to the atmosphere and found to gain 0.393g in mass. What is the percent, by mass, of Na2SO4*H2O in the resulting mixture of anhydrous Na2SO4 and the decahydrate?
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rock 1 is thrown straight down from a tower rock 2 is thrown straight up from the same height at the same speed as rock
1285g sample of na2so4 is exposed to the atmosphere and found to gain 0393g in mass what is the percent by mass of
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a man walks westward on ship with a speed of 4kmhr the ships propeller drives it 15kmhr south what is the actual speed
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