Which of these statements is true of both endothermic and exothermic reactions A.
They create thermal energy during the reaction.
B.
They require energy to continue.
C.
They require energy to get started.
D.
They absorb energy from the environment

Newtons second law deals most cosely with

What is the volume occupied by 10.0 dm3 of gas at standard pressure after it has been compressedat constant temputure to 500.0 kpa?

There are 6.022, 104 atoms of hg in 1 mole of hg the number of atoms in 45 moles of hg can be found by multiplying 4.5 by 6.022, 102 which is the number of atoms in 4.5 moles of hg, correctly written in scientific notation with the correct number of significant figures? 0 21,109 0 21,100 271, 1024 27.099, 100 mark this and retum save and exit submit