A jet plane carrying 3,000 kg of ethane burns off all the...
A jet plane carrying 3,000 kg of ethane burns off all the gas forming water and carbondioxide. if all the carbondioxide is expelled and all the water formed is condensed and kept on board the plane, then the gain in weight is
1,800 kg
900 kg
600 kg
2,400 kg
1,200 kg
Correct answer is D
2C2H6+7O2→4CO2+6H2O
addition of oxygen causes weight gain, expelled CO2 results in weight loss
for oxygen added;
2moles C2H6 = 7moles O2
2(30)g C2H6 = 7(2)(16)g O2
3000kg C2H6 = X kg O2
cross multiplying X = 11200kg
for CO2 expelled;
2moles C2H6 = 4moles CO2
2(30)g C2H6 = 4(44)g CO2
3000kg C2H6 = Y kg CO2
cross multiplying Y = 8800kg
since X > Y, the plane has a net weight gain.
Net weight gain = X - Y = 11200-8800 = 2400kg.
CH3COOH(g) → H4(g) + CO2(g) The reaction above is...
Which of the following substances is a peroxide? ...
When air is passed through alkaline pyrogallol and then over quicklime, the only gases left are? ...
Use the graph above to answer this question.How long does it take all the solid to melt? ...
Which of the following acts both s a reducing and an oxidizing agent? ...
Which method is used for the purification of copper from its ore? ...
Which of the following types of reactions takes place between C2H6 and the halogens? ...
By what amount must the temperature of 200cm3 of Nitrogen at 27°C be increased to double th...