Saved Bookmarks
| 1. |
Zinc sulphate crystals contain 22.6% of zinc and 43.9% of water. Assuming the law of constant proportions to be true, how much zinc should be used to produce 13.7 g of zinc sulphate and how much water will they contain? |
|
Answer» Solution :100G of zinc sulphate CRYSTALS are obtained from =22.6g zinc 1 G of zinc sulphate crystals will be obtained from =22.6g zinc 1 g of zinc sulphate crystals will be obtained from =22.6/100g zinc 13.7g of zinc sulphate crystals will be obtained from `=(22.6)/(100)xx13.7=3.0962 g` of zinc 100 g of zinc sulphate crystals contain WATER =43.9g 1 g of zinc sulphate crystals contain water =43.9/100g 13.7g of zinc sulphate crystals shall contain water `=(43.9)/(100)xx13.7=6.0143g`. |
|