In the following reaction, 2A1 + 6HCl → 2AlCl3 + 3H2 , the oxidation state for aluminum goes from...
A) 0 → +1
B) 0 → +3
C) +3 → +3
D) +3 → -3
E) 0 → -3

What energy is it when you flip on a switch on a lamp

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

The chemical formula for emerald is be3al2(sio3)6.an emerald can be decided as