1540 J of work is done on an ideal gas at a constant pressure of 0.750 atm. What is the volume change experienced by the gas? a. -20.3 L
b. +20.3 L
c. -2050 L
d. -11.4 L
e. +11.4 L

- "the choice that is not an indicator of a chemical change is "state of matter changes". more common than not, chemical reactions produce energy in the form of light or heat. along with energy, they also produce a new substance called the product that could be in any state of matter (solid, gas, or liquid)."

i can ! i just need to know what the paragraph is! : p

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).