How many molecules are in 0.55 moles of Cu(NO3)2?

The speed of light is around 6.706×10^8 miles per hour. what is the speed of light in units of miles per minute?

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

Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.