1) You are given a solid hydrate. You dry and weigh a sample tube. You put...

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Chemistry

1) You are given a solid hydrate. You dry and weigh a sampletube. You put in the hydrate and reweigh.
You heat the tube and contents to drive off any water then cool andreweigh.
You obtain the following fictional data:
Mass of sample tube andhydrate 37.9143 g
Mass of sample tube andhydrate after heating and cooling 36.8824 g
Mass of empty sampletube 35.6254 g
Molecular weight of the anhydroussalt 112.0 g/mol
Calculate:
Mass of hydrate weighed out _______ g (a)
Mass of water lost after heating _ g (b)
Per cent water in the hydrate _ % (c)
Moles of water lost duringheating _ mol (d)
Moles of anhydrous saltremaining after heating _ mol (e)
Ratio-moles of water permole of anhydrous salt _______ (f)
Report this ratio (f) as a single number to two decimal places,e.g. the ratio of 2.00 mole water and 1.50 mol salt is 1.33

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3.9 Ratings (520 Votes)

Mass of hydrate weighed out Mass of sample tube and hydrate Mass of empty sample tube Mass of hydrate weighed out 379143 g 356254 g 22889 g Mass of water lost after heating Mass of sample tube See Answer

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Mass of hydrate weighed out	_______________ g	(a)
Mass of water lost after heating	_______________ g	(b)
Per cent water in the hydrate	_______________ %	(c)
Moles of water lost duringheating	_______________ mol	(d)
Moles of anhydrous saltremaining after heating	_______________ mol	(e)
Ratio-moles of water permole of anhydrous salt	_______________	(f)

Mass of sample tube andhydrate	37.9143 g
Mass of sample tube andhydrate after heating and cooling	36.8824 g
Mass of empty sampletube	35.6254 g
Molecular weight of the anhydroussalt	112.0 g/mol