help now due today!! Mass and Gaseous Volume Relationships Questhas What mass, i

Question

help now due today!!

Mass and Gaseous Volume Relationships Questhas What mass, in g, of hydrogen is fonsed when 3 mol of aluminium react with ewcess hydrochloric acid according to the following equation 2Al(s)" fil IO(m) 2AICIJaq) + 3H2(g) A 30 B. 45 C 6.0 D. 9.0 Total I mark) Chloroethene, CH,C, reacts with oxygen according to the equation below What is the amount, in mol·of H2O produced when 10.0 ml orc2140 and 10.0 mol oro, are mixed together, and the above reaction goes t0 completion? A. 400 B. 8.00 C. 100 D 200 Total I ark) . 6.0 mol of aluminium reacts with oxygen to form alurminiam oide. What is the amount of oxygen, in mol, needed for complete reaction? A. 1.5 B. 30 C. 4.5 D 6.0 Total 1 marl)

Explanation / Answer

1)
from given equation,
2 mol of Al formes 3 mol of H2

mol of H2 formed = (3/2)*moles of Al
= (3/2) * 3
= 4.5 mol

Answer: B

2)
O2 is limiting reagent here
5 mol of O2 forms 2 mol of H2O
so,
moles of H2O = (2/5)*mol of O2
= (2/5)*10
= 4 mol
Answer: A

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