4.90 Iron metal can be refined (rom the mineral hematite (Fe 2 O 3 ). One way of converting the mineral to iron is to react it with carbon monoxide, as shown below: Fe 2 O 3 + 3 CO → 2 Fe + 3 CO 2 Because the hematite is obtained from various ores, it is usually not in a pure form. Suppose an iron manufacturer has 2.00 X 10 5 kg of ore available, and the ore is 93% Fe 2 O 3 by mass. (There is no iron in the remaining 7% of the ore.) How many moles of Fe 2 O 3 are present in this ore? How many kg of pure iron could be obtained from this sample of ore? Assume that the process has a 100% yield and that excess CO is available.
4.90 Iron metal can be refined (rom the mineral hematite (Fe 2 O 3 ). One way of converting the mineral to iron is to react it with carbon monoxide, as shown below: Fe 2 O 3 + 3 CO → 2 Fe + 3 CO 2 Because the hematite is obtained from various ores, it is usually not in a pure form. Suppose an iron manufacturer has 2.00 X 10 5 kg of ore available, and the ore is 93% Fe 2 O 3 by mass. (There is no iron in the remaining 7% of the ore.) How many moles of Fe 2 O 3 are present in this ore? How many kg of pure iron could be obtained from this sample of ore? Assume that the process has a 100% yield and that excess CO is available.
Solution Summary: The author explains how to calculate moles of hematite, mass of pure iron in kg.
4.90 Iron metal can be refined (rom the mineral hematite (Fe2O3). One way of converting the mineral to iron is to react it with carbon monoxide, as shown below:
Fe
2
O
3
+
3 CO
→
2 Fe
+
3 CO
2
Because the hematite is obtained from various ores, it is usually not in a pure form. Suppose an iron manufacturer has 2.00 X 105 kg of ore available, and the ore is 93% Fe2O3 by mass. (There is no iron in the remaining 7% of the ore.) How many moles of Fe2O3are present in this ore? How many kg of pure iron could be obtained from this sample of ore? Assume that the process has a 100% yield and that excess CO is available.
At an electrified interface according to the Gouy-Chapman model, what types of interactions do NOT occur between the ions and the solvent according to this theory?
Please predict the products for each of the
following reactions.
Clearly show the regiochemistry (Markovnikov
vs anti-Markovnikov) and stereochemistry
(syn- vs anti- or both).
If a mixture of enantiomers is formed, please
draw all the enantiomers.
Hint: In this case you must choose the best
answer to demonstrate the stereochemistry of
H2 addition.
1.03
2. (CH3)2S
BIZ
CH₂OH
2. DMS
KMnO4, NaOH
ΖΗ
Pd or Pt (catalyst)
HBr
20 1
HBr
ROOR (peroxide)
HO
H-SO
HC
12 11 10
BH, THE
2. H2O2, NaOH
Brz
cold
HI
19
18
17
16
MCPBA
15
14
13
A
Br
H₂O
BH3⚫THF
Brz
EtOH
Pd or Ni (catalyst)
D₂ (deuterium)
1. Os04
2. H2O2
CH3CO3H
(peroxyacid)
1. MCPBA
2. H₂O*
H
B
+
H
H
H
"H
C
H
H
D
Explain how Beer’s Law can be used to determine the concentration in a selected food sample. Provide examples.
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