What is the mass of a neutron?
A) 1/2,000 amu
B) 1 amu
C) 2,000 amu
D) 1/200 amu

The answer is falsegravitational force is independent of medium and depends only on the masses of the two objects and the distance between them.

In reversible reaction chemistry equilibrium is attained when the forward and reverse reactions are taking place at the same rate, thus, the concentrations of reactants and products remain the same. a reversible reaction is a chemical reaction where the reactants form products that, in turn, react together to give the reactants back. in irreversible reactions on the other hand, the reactants react to form the products, which cannot revert back into reactants.

Definitely 25.3 degrees celsius 

They adding another layer their bahaviors.