The density of ethanol is 0.789 g/mL at 200 C. What is the mass of a sample of ethanol, at this temperature, that has a volume of 175.0 mL?

The pressure inside a hydrogen-filled container was 2.10 atm at 21 ? c. what would the pressure be if the container was heated to 92 ? c ?

Aroller coaster car is traveling down a track at 22 m/s. the car has a mass of 2000 kg. what is the kinetic energy of the car? a) 22,000 j b) 968,000 j c) 484,000 j d) 44,000 j

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0