What is the temperature difference if 300 cal are used to warm water

At 20°c, a sample of h2o liquid and a sample of co2 gas each have the same average kinetic energy. why is one a liquid and the other a gas at this temperature?

The kw for water at 0 °c is 0.12× 10–14 m2. calculate the ph of a neutral aqueous solution at 0 °c.

Sheela and her brother hari were sitting in the living room, watching tv. suddenly hari said that he thinks something is burning in the other room. how did he get the burning smell?