What is the name of the compound with the formula PbF2?

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.)

All cells are made of four types of acids, lipids, proteins, and carbohydrates.

Which of the following units is not an official si unit