Which groups of metals tend to have more than one oxidation number?

What type of matter is made of only one kind of atom

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

When a device is used in a circuit in which the voltage is 81 v the current flowing through the device is 3 a what is the resistance of the device