Which term best describes the role of hydrogen gas in the formation of water molecules? a) crystalyst b) inhibitor c) product d) reactant i think its d but i'm not sure

The pressure inside a hydrogen-filled container was 2.10 atm at 21 ? c. what would the pressure be if the container was heated to 92 ? c ?

When 225mg of anthracene, c14h10(s), was burned in a bomb calorimeter the temperature rose by 1.75k. calculate the calorimeter constant. by how much will the temperature rise when 125mg of phenol, c6h5oh(s), is burned in the calorimeter under the same conditions? (δch< (c14h10,s)=–7061 kj mol−1.)

What information does a complete ionic equation give that the balanced equation doesn’t show?