Answer:
0.119 moles
Explanation:
molar mass of Fe = 55.845g
to find moles = mass/ molar mass
so moles of Fe = 20/55.845
= 0.358 moles
for the equation you are given
for every three Fe, it produces 1 Fe3O4 , meaning the ratio is 3:1
if you have 0.358 moles of Fe, that means the number of moles of Fe3O4 will equal to one third of that,
thus
moles of Fe3O4 = 1/3 x 0.358 = 0.119
Guy that said it was DNA was right i just took the test to so another words your answer is Letter A DNA have a nice weekend! <span />
Answer:
As resistance increases, current increases. As resistance increases, current decreases. As resistance increases, current stays the same.
Answer:
A molecule is an electrically neutral group of two or more atoms held together by chemical bonds. Molecules are distinguished from ions by their lack of electrical charge. hope this helps :)