The specific heat of silver is 0.234 J/(g·K). Calculate the amount of energy that is needed to
raise the temperature of 175 g of silver from 22.5°C
to 40.0°C.

The density of concentrated ammonia, which is 28.0% w/w nh3, is 0.899 g/ml. what volume of this reagent should be diluted to 1.0 × 103 ml to make a solution that is 0.036 m in nh3