Answer:
the number of moles is 0.279
Explanation:
The calculation of the number of moles of calcium nitrate, is given below;
As We know that
Number of moles = mass of substance ÷ molecular weight
where
Mass of substance is 45.8g
And, the molecular weight is 164.088
so,
= 45.8 g ÷ 164.088
= 0.279moles
Thus , the number of moles is 0.279
We simply used the above formula so that the accurate value could arrive
The substance you would expect to have a low melting point would be carbon dioxide, so the correct answer would be A
Oxygen is the element. It has a total of 6 valence electrons.
Answer:
A and E
Explanation:
A and E are the answers! usa test prep told me. :L
Maybe by protons i forgot how to spell it :(