Other Chemistry Answers

You have been asked to prepare a solution which contains 70% of acetonitrile and of 30% H2O. Moreover, the

aqueous portion should contain 1% of trifluoroacetic acid (TFA) . The volume of this solution is to be 20 mL.

However, only a dilute solution of 5% is available within the laboratory.

What volume of H20 and TFA should be used, respectively?

A mixture of CO 2 . CO, and H_{2}*O is obtained by burning methane in presence of air in a

he reactor contains 8 mole C*O_{2} / m * o * l_{t} CO. The percentage conversion of methane is 90%.

The feed to the reactor contains 7.8 mole % C*H_{4} , 72.8% N_{2} , and 19.4% O_{2} The gas leaving

Calculate the molar composition of the product stream using extent of reaction.

continuous steady state combustion reactor. The reaction take place as follows

3C * H_{4} * (g) + 6O_{2} * (g) 3C * O_{2} * (g) + 6H_{2} * O

2C * H_{4} * (g) + 3O_{2} * (g) 2CO * (g) + 4H_{2} * O

A gas mixture stored at 5500 kPa and 320 K contains 80% nitrogen and 20% ethane. 

Calculate and compare the molar volume of the mixture using 

a) The ideal gas equation, b) the mean compressibility factor based on Amagat’s and 

Dalton’s law, c) The Kay’s method. 

Given that: 

For nitrogen critical pressure (PC) = 3394 kPa and critical temperature (TC)=126.1 K; 

For ethane PC =4880 kPa and TC =305.4 K respectively.

Calculate the composition of the coal on a dry ash free basis which has the following Composition on weight basis: S=4\% , N 2 =2\% , O 2 =5\% , Ash=10\% , H 2 O=2\% . The balance is carbon and hydrogen in the atomic ratio 10(H / C) .

Calculate the enthalpy change for 1 kg of water from -30 oC to 130 oC using the Cp

values 23.7 J/gmol, 75.4 J/gmol and 33.9 J/gmol for ice, liquid water and water vapor