13. Which compound's solubility decreases most rapidly as the temperature changes from 10°C to 70°C?

(1) NH4Cl
(2) NH3
(3) HCI
(4) KCI

The diagram below shows the different phase transitions that occur in matter. which arrow represents the transition in which dew is formed?

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

A1.5l container holds p.50 grams of an unknown gas at a pressure of 0.44 atm and a temperature of 50.c what is the molar mass of the unknown gas