Help please! this is science :)

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.)

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

What is the molar mass of potassium nitrate, kno3