If 1.92 g Ar are added to 2.98 atm He in a 2.00 L cylinder at 27.0 C, what is the total pressure of the resulting gaseous mixture?

The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

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

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.