Burning one mole of propane according to the following reaction liberates 526 kcal of energy. If all of the coefficients are tripled, how much energy will be released? C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(I)

Your friend offers to show you an intrusive igneous rock. which of the following would you expect to see?

Atrain travels 74 kilometers in 3 hours, and then 81 kilometers in 5 hours. what is its average speed?

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