What is an example of a covalent bond and why​

Balance this equation co2(g) + h2o (g) show that the balanced equation obeys the law if conversation of mass

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.)

An observation that requires measurement is called quantitative observable or qualitative