Question

How would much water in grams be required to completely dissolve 75 grams of KNO3 at 60 degrees celsius?

Answer 1

About 70.8 grams.

Explanation:

The solubility of `KNO_3` in `60`℃ water is `106` g/`100`g `H_2O`, according to https://ja.wikipedia.org/wiki/%E6%BA%B6%E8%A7%A3%E5%BA%A6%E3%81%AE%E4%B8%80%E8%A6%A7 (Japanese).

Therefore, amount of water requied to dissolve `75` grams of `KNO_3` is `75*100/106=70.75` grams.