In an experiment, the molar mass of the compound was determined to be 228.276 g/mol. What is the molecular formula of the compound?

Iknow #2 is d. i just need to know why

What are the 4 phases of matter in order of increasing engery content?

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