Answer:
he average atomic mass of an element is the sum of the masses of its isotopes, each multiplied by its natural abundance
<span>The correct answers are A, B, and D. The ΔHrxn is equal to the ΔHf when the ΔHf of the reactants is zero, and this can only occur when the reactants are pure elements (not compounds) in their natural phase at ambient temperature.
c) Chlorine's natural phase is gaseous, but since it is a liquid in this reaction, ΔHf ≠ 0.
e) CO is a compound, not a pure element.
f) BaCO3 is a compound, not a pure element.</span>
Answer:
The two variables affecting the rate of diffusion are the concentration gradient and size of the molecule. Concentration gradient: The movement of the substance is generally along the concentration gradient of the solute and it moves from a region of its higher concentration to a region of its lower concentration.
The Answer Should Be Electrons.
Answer:
4,5*6,02*10^23
Explanation:
The moles seem always complex topic but not in fact,
Consider that
1 mole of apple is 1 * 6,02*10^23
Same as 1 dozen of apple is 1 * 12
