How many milliliters of sodium metal, with a density of 0.97 g/ml, would be needed to produce 34.5 grams of sodium hydroxide in the single replacement reaction below?
unbalanced equation: na + h2o > naoh + h2

If i initially have a gas at a pressure of 12 atm, a volume of 23 liters, and a temperature of 200 k, and then i raise the pressure to 14 atm and increase the temperature to 300 k, what is the new volume of the gas?

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

What are fossils of organisms that existed over a wide area but only for a limited time period called?