Work is labor and energy is useful for it because you need energy to work unless you will be tired
Answer:
The sun is heavier than all of the planets, thus having more gravity
Explanation:
Because the sun is heavier, it exerts more gravitational pull towards itself, thus keeping all of the planets in orbit.
Answer:
please read the answer above
<span>Both the identity and the properties of a substance change</span>
Answer:
single bond= 1 sigma bond
so basically 1
Explanation:
Usually, all bonds between atoms in most organic compounds contain one sigma bond each. If it is a single bond, it contains only sigma bond. Multiple bonds (double and triple), however, contains sigma and pi bonds. Double bonds have one each, and triple bonds have one sigma bond and two pi bonds