Which of these is a reason why nuclear power is important? A. Solar and wind technologies are both types of "green" energy.
O B. Wind technology is being utilized in places where there is a lot of
wind.
C. Fossil fuels will run out soon.
D. Solar technology provides an endless source of power.
SUBMIT

c is the answer because when something is left after something evaporates that shows the chemical change.

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.

so what is the problem with your lab report and whats the subject of the lab report? i will you

the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula

(that's what i know about formula mass)