Isotopes exist because atoms of the same element can have different numbers of

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?

Displacement is the slope of a velocity vs. time graph a. true b. false

If a simple machine aduces the strength of a force, what must be increased? the speed of the input force the work the simple machine performs the size of the simple machine the distance over which the force is applied