What is the difference between Reactants and Products?
in own words?

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.)

0.2348 grams of pbcl2 used to form 44.0 ml of solution.

What is the subscript for oxygen in its molecular formula