you throw a ball with a mass of 2.1 kg. The balls leave your hand at 30 m/s the ball has enrgy. Calculate it

Find the protons, electrons and neutrons for strontium with a mass of 83

Base your answer on the information below and on your knowledge of chemistry. nitrogen dioxide, no2, is a dark brown gas that is used to make nitric acid and to bleach flour. nitrogen dioxide has a boiling point of 294 k at 101.3 kpa. in a rigid cylinder with a movable piston, nitrogen dioxide can be in equilibrium with colorless dinitrogen tetroxide, n2o4. this equilibrium is represented by the equation below. 2no2(g) n2o4(g) + 58kj at standard pressure, compare the strength of intermolecular forces in no2(g) to the strength of intermolecular forces in n2(g).

How many oxygen atoms are there in 3.15 moles of hcl manganese (iv) oxide, mno2