Dimetacrine an antidepressant is composed of 81.6% carbon,8.9 % hydrogen, and 9.51% nitrogen. the molar mass of dimetacrine is 294.44 g/mol. determine the empirical formula and the molecular formula for dimetacrine

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.)