Which profile best describes the reaction C(s) + 2H2(g) → CH4(g),
AH = -74.9 kJ?

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

Which of these features are formed when hot groundwater is forced out through cracks in the earth's surface?

In order to complete this lab. you will need to be familiar with some common chemistry terms. complete the chemical change puzzle and list the relevant terms and their meaning below a.rectant b.product c.supernate