I think I did this right.
The answer would be C. Amplitude
Most uncommon states of matter:
c. Superfluid, plasma
Forgive me if I’m wrong, my memory is kinda hazy :))
Answer : In the reaction of Ca +

--->Ca

, the coefficient of Ca and

will be the same which will be 1.
Explanation : As per the rules of writing a chemical equation and balancing it properly, the number of elements in reactants side should be equal to the number of elements generated in product side. Hence when we use 1 molecule of Ca and one molecule of

then it generates 1 molecule of Ca

.
Answer:

Explanation:
Hello,
In this case, the undergoing chemical reaction is:

Thus, for the given masses of reactants we should compute the limiting reactant for which we first compute the available moles of iron (II) oxide:

Next, we compute the consumed moles of iron (II) oxide by the 10.0 g of magnesium, considering their 1:1 molar ratio in the chemical reaction:

Therefore, we can notice there is less consumed iron (II) oxide than available for which it is in excess whereas magnesium is the limiting reactant. In such a way, the produced mass of iron turns out:

Regards.