Answer:
Explanation:
The difference between bond pair & lone pair is that a bond pair is composed of two electrons that are in a bond . a lone pair is composed of two electrons that are not in a bond.
Answer: 78.69 g of Fe
Explanation: Iron(III) oxide is Fe2O3. It has a molar mass of 159.7 g/mole. That consists of:
2 x Fe at 55.85 = 11.69 or 69.94%
3 x O at 16.0 = 48.0 or 30.06%
Therefore 112.5 grams will contain (112.5 g)*(69.94%) = 78.69 g of Fe
Answer:
69.4kg
Explanation:
mole =volume/1000 * mole conc.
=1250/1000 * 0.75
mole =0.9
:• mole =mass /molar mass
mass =0.9*[40+32+2]
=69.4kg