How long does it take (in minutes) for light to reach mercury from the sun, a distance of 5.96x10^7

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

In a heat engine of 1000 j of heat enters the system and the piston does 500 j of work what is the final internal energy of the system if the inital energy was 2000 j we have to do all of these down here 1)write the equation 2)list out your know variables 3)plug the numbers into the equations 4)solve 5)write your solution statemtn that includes inital energuy and final energuy added

Which material burns faster? metal aluminum