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
