2 AlCl3 + 3 Ca-3 CaCl2 + 2 AI You react aluminum chloride with calcium metal. You want to produce 40.00 grams of aluminum. How many grams of calcium do you need? You must
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Iknow #2 is d. i just need to know why

Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules

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