Specific Heat H = 14.30 J/g C
Specific Heat He = 5.193 J/g C
How much heat energy is needed to raise the temperature of 340 g of
a sample of hydrogen gas from 20 to 45 degrees?
What would it be for all the same data but helium gas instead?

What type of reaction is shown below? check all that apply. 2h2o2 → 2h2o + o2 synthesis decomposition combustion

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

How have the greenhouse gasses increased from the year 2000 to 2018