A chemist adds 415.0 mL of a 0.71 mil/L sodium thiosulfate (Na2S2O3) solution to a reaction flask. Calculate the millimoles of sodium thiosulfate the chemist has added to the flask. Be sure your answer has the correct significant digits

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.)

3. how much energy in joules is required to evaporate .0005 kg of liquid ammonia to vapor at the same temperature? 4. how much energy ( in megajoules ) is given up by .75 kg of water at 0c when it freezes to form ice at 0c? 5. explain how heat works between and at critical temperatures?

In pqr m< p=60 m< q= 30 and m