Wich natural methods remove co2 from the atmosphere

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.)

Why can water dissolve many ionic compounds

One student said that the investigation was not valid (a fair test). write a plan for the investigation that includes improvements to the method and apparatus