Both graphite and diamond burn in the presence of oxygen to form carbon dioxide. Which produces more heat when burned, if their conversion has the following associated heat: C(s, graphite) --> C(s, diamond) ΔH° = 1.90 kJ

24. a sports ball is inflated to an internal pressure of 1.85 atm at room temperature (25 °c). if the ball is then played with outside where the temperature is 7.5 °c, what will be the new pressure of the ball? assume the ball does not change in volume nor does any air leak from the ball a) 0.555 atm b) 1.74 atm c) 1.85 atm d) 1.97 atm

Can anyone answer these questions? ? i need it before 1: 00pm today

What mass of ca(oh)2 is needed to make 1250ml of a .75m solution?