For proper ph balance within the human body, what is the ratio of bicarbonate ions to carbonic acid molecules?

How is energy related to the change of state represented by the model? atoms gain energy as a solid changes to a liquid. atoms gain energy as a solid changes to a gas. atoms lose energy as a solid changes to a liquid. atoms lose energy as a solid changes to a gas.

40dm3 of gas at 760 torr are heated from 5°c to 50°c what is the new volume

If e is the symbol for an element, which two of the following symbols represent isotopes of the same element? 1. e2. e3. ea.1 and 2c.1 and 4b.3 and 4d.2 and 3