Alight has a wavelength of 4.10×10^12m . what is the frequency?

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

What happens to the average kinetic energy of a gas when the particles of the gas collide against each other at a constant temperature and volume? explain your answer.

How many liters of ethylene glycol antifreeze (c2h6o2), with a density of 1.100 g/l, would you add to your car radiator containing 15.0 kg of water if you needed to protect your engine to - 21.5°c? for water, kf = 1.86°c m -1.