Which statement(s) is/are TRUE for all chemical reactions? SELECT ALL THAT APPLY
a
Reactant elements and/or compounds rearrange to
form chemically new products.
b Energy is absorbed when bonds are broken.
There is an overall energy release during all
chemical reactions.
d Energy is released when bonds are formed.

Which of the following is not a true statement about dwarf planets? a the kuiper belt contains comets, asteroids, and dwarf planets. b ceres is a dwarf planet located in the kuiper belt. c the largest known dwarf planet in the solar system is named eris.

How many moles are in 43.9 l of oxygen

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