If I have an unknown quantity of gas at a pressure of 0.72 atm, a volume of 22 liters, and a temperature of 30° C, how many moles of gas do I have?

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

For each of the compounds below, show that the charges on the ions add up to zero. a. kbr b. cao c. li(2)o d. cacl(2) e. alcl(3)

Is 9 correct? and can someone me with 10? it’s due tomorrow, you