How many kilocalories of energy are needed to raise the temperature of 13 g of alcohol from 11 C to 23'C? (Given: Sp. heat of alcohol 0.588 cal/g 'C and 1 kcal

Given that the molar mass of nano3  is 85.00  g/mol, what mass of nano3  is needed to make 4.50  l of a 1.50  m nano3solution? use  .6.75 g18.9 g255 g574 g

If 1.63 times 10 negative 4 of helium dissolves in 100.0g of water, what is the concentration in parts per million

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