The standard molar heat of vaporization for water is 40.79 kj/mol. how much energy would be required to vaporize 4.72 x 10^10 molecules of water

After a big snowfall, you take your favorite rocket-powered sled out to a wide field. the field is 195 m across, and you know that your sled accelerates at a rate of 3.65 m/s2 when the rocket is on. how much time will it take the sled to cross the field starting from rest, assuming the rocket is on the whole time?

In the circuit shown below, with each bulb holding a resistance of 60 ohms, how many amps of current are flowing? express your number as a decimal.

Abar magnet cut in half will form a total ofpoles.a)fourb)eightc)two