Consider a wooden chair and a balloon. What do these two objects always have in common?

A. Both are made of the same number of atoms.

B. Both have the same mass number.

C. Both are made of the same kind of atom.

D. Both are made of atoms.

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.)

Areaction in which products can react to re-form reactants is

Molecular iodine, i2(g), dissociates into iodine atoms at 625 k with a first-order rate constant of 0.271 s−1. part a part complete what is the half-life for this reaction?