Answer:
m = 19 grams
Explanation:
Given that,
No. of moles, n = 0.8
The molar mass of magnesium, M = 24.305 u
We need to find the mass of 0.80 moles of Mg. We know that given mass to the molar mass is equal to no of moles. Let the mass is m. So,

or
m = 19 grams
So, the mass of 0.8 moles of Mg is 19 grams.
Answer:
The columns of the table represent groups, or families, of elements. The elements in a group often look and behave similarly, because they have the same number of electrons in their outermost shell
The metric system is based on powers of 10 so it is much easier to convert units, often just by moving the decimal point.
Vapor pressure is **directly** related to the temperature of the liquid!! :)
Your answer should be B :)