which of the following steps are necessary to calculate the mass percent of oxygen in acetic acid (ch3cooh)? select all that apply.

Anthracite is so hard and pure it is also referred to as a renewable resource metamorphic rock hot bituminous coal dirty fuel

Connect the whole numbers on the periodic table to indicate what they represent?

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