lauren6687
17.09.2019 •
Chemistry
Cwu jus.
| ch, +3,0, +co + 2h,0
co + 1/2o2 + co2
a sample of ch4 is burned in an excess of o2 to give 4.4 moles of h2o. how many
moles of ch4 were in the original sample?
a) 2.2
b) 2.9
c) 8.8
d) 1.1
e) 4.4
42. the refining of aluminum from bauxite ore (which contains 50.% al2o3 by mass)
proceeds by the overall reaction 2al2o3 + 3c → 4a1 + 3co2. how much bauxite ore
required to give the 5.0 x 1013) g of aluminum produced each year in the united states?
(assume 100% conversion.)
a) 1.3% 1013 g & alg=54109 al x molt 2nd
b) 5.3 x 1013 g
279 al molt
c) 1.9 x 1014 g
d) 7.6 x 1014 g
- e) none of these
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Ответ:
Ni,ggah
Explanation: