PLEASE HELP FINALS DUE Calculate the pH of 165.0 mL of 0.12 M C2H5NH2 with 280.0 mL of 0.22 M C2H5NH3Cl.

The length of a vector arrow represents its magnitude and the point represents its direction true or false apex

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.)

The atoms of a solid aluminum can are close together, vibrating in a rigid structure. if the can is warmed up on a hot plate, what happens to the atoms?