Answer:
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Answer:
a new discover a new theory
Answer/ explanation :
The find the mass,
We use this formula
Number of mole = mass/ molar mass
Since number of mole = 3.25mol
Number of mass be x
Molar mass of H2SO4
H - 1.00784 * 2= 2.01568
S - 32.065
O - 15.999 * 4 = 63.996
Note there are 2 moles of H and 4 moles of O and 1 mole of S
Molar mass of H2SO4 = 2.01568 + 32.065 + 63.996
= 98.07668g/mol
Number of mole= 3.25mol
3.25 = x / 98.07668
x = 3.25 * 98.07668
= 318.749g
Therefore, the number of mass is 318.749g
Answer:
19. 1, 2, 3, 4, 5, 6, 7, 8
20. Li=1+, Be=2+, B=3+, C=4+
21. N=3-, O=2-, F=1-
Explanation:
The outer core of the earth is about 1,400 miles thick.
