Hi! where are the options?
m = 7.84x107/(3x108)2kg = 7.84x107/9x1016kg = 0.871x10-9 kg = 8.71x10-10 kg
A chemical change affects on the molecular level of matter, which makes it irreversible. Combustion is a pretty good exmple. Physical changes are reversible and dont alter the formula. Hope this helped!
It functions to maintain the proper pressure within the plant cells to provide structure
I believe it’s Chemical energy but please correct me if i’m wrong
