Answer:
The net chemical equation for the production of iron from carbon, oxygen and iron(III) oxide:
Explanation:
Step 1: Carbon and oxygen react to form carbon monoxide:
..[1]
Step 2: Iron(III) oxide and carbon monoxide react to form iron and carbon dioxide:
..[2]
The net chemical equation for the production of iron from carbon, oxygen and iron(III) oxide can be obtained by :
3 × [1] + 2 × [2]
CO gas will gas cancel out form both sides ans we will get the net chemical equation:
According to reaction, 2 moles of ferric oxide reacts with 6 moles of carbon and 3 moles of oxygen gas to give 4 moles of iron and 6 moles pf carbon dioxide gas.
Atmosphere is the envelope of air that surrounds the earth.
The answer is B
Explanation: Not D because only engineering does that
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It goes from a producer to a herbivore to a consumer or two,then when that animal dies and the a decomposer breaks down the organism the returns back to the soil it's like a cycle
Answer:
The surface-to-volume ratio of a C-60 fullerene is 3:77.
Explanation:
Surface area of sphere =
Volume of the sphere =
where : r = radius of the sphere
Radius of the C-60 fullerene sphere = r = 77 pm
Surface area of the C-60 fullerene = ...[1]
Volume area of the C-60 fullerene = ..[2]
Dividing [1] by [2]:
The surface-to-volume ratio of a C-60 fullerene is 3:77.