What dertermines if a chemical reaction releases heat

If the mass of the earth and all objects on it were suddenly doubled, but the size remained the same, the acceleration due to gravity at the surface would become A) 1/2 of what it now is. B) 2 times what it now is. C) 1/4 of what it now is.

What does the band of stability for atomic nuclei refer to

How can Newton's third law be represented in golf?

When moving detainees by rail each car should be searched?

A child standing on the edge of a freely spinning merry-go-round moves quickly to the center. Which one of the following statements is necessarily true concerning this event and why? a.

Convert 1087 ft/s to mi/hr

Using the atomic symbol above report how many protons, neutron, and electrons an atom of neon contains.

Which of the following is not shorthand to describe one of the three types of ecological relationships? +/+ -/+ +/0 -/0

Which is a characteristic of an electromagnetic wave?

What does the ozone layer absorb? a. Microwaves c. UV radiation b. X-rays d. Infra-red radiation