Musa placed a large crystal of potassium permanganate in the bottom of a beaker of cold water and left it for several hours. i need to know what he must have observed after five minutes.
explain..

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.)

How much heat is added if 0.814g of water increase in temperature by 0.351 degree c?

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?