Mr d travels with a constant velocity of 26m/s how much kinetic energy does he have

On a day when the barometer reads 75.23 cm, a reaction vessel holds 250 ml of ideal gas at 20 celsius. an oil manometer ( ρ= 810 kg/m^3) reads the pressure in the vessel to be 41 cm of oil and below atmospheric pressure. what volume will the gas occupy under s. t.p.?

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)