Answer:
Multiply the element's atomic mass by the number of atoms of that element in the compound. This will give you the relative amount that each element contributes to the compound. For hydrogen chloride, HCl, the molar mass of each element is 1.007 grams per mole for hydrogen and 35.453 grams per mole for chlorine.
Gas<span> molecules </span>diffuse more<span> quickly </span>than<span> liquid and solid molecules </span>because<span> there is</span>more<span> free space between </span>gas<span> molecules, which gives them </span>more<span> room to move. This causes the molecules to bounce against each other and increases the rate of diffusion. The molecules in liquid are much closer together </span>than<span> those in </span>gas<span>.</span>
D. the activation energy is the displacement of energy needed for the reaction, so the distance underneath the maximum point
