Mass of one water molecule? the answer says the mass of one water molecule is 2.99 x 10^-23
g. i do not know how to get that answer. i thought that the mass of one water molecule would be the molecular mass of h2o, which is 18 amu.

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

One nanometer is equal to how many meters?

What energy conversion occurs when a sling shot is used to shoot a rock across the room? (2 points) question 2 options: 1) stored mechanical energy is converted to mechanical energy. 2) stored mechanical energy is converted to radiant energy. 3) gravitational energy is converted to radiant energy. 4) gravitational energy is converted to mechanical energy.