Atmospheric pressure on Mount Everest is approximately 253 mm Hg. Use the table of conversion factors to convert this pressure to torr, atm, Pa, and bar. PLEASE HELP!!!

When the volume and number of particles of a gas are constant which of the following is also constant

Which type of orbits are found in the principal energy level n = 2 a - s b - s, f c - s, d d - s, p e - s, p, d

You are making a solution of calcium chloride dissolved in water. you add solid, stir, and it dissolves. you add just a spatula tip full, stir, and the solid does not dissolve. how could you describe the solutions before and after adding the spatula tip amount