Question

A gas mixture contains 50% helium and 50% methane by volume. What is the percent by weight of methane in the mixture?

Solution

Correct option is

80.03%

 

Equal volumes contain equal number of moles Hence, molar ratio of He : CH4 = 1 : 1

  

SIMILAR QUESTIONS

Q1

A compound has haemoglobin like structure. It has one Fe. It contain4.6% of Fe. The approximate molecular mass is

Q2

In Haber process, 30 litre of dihydrogen and 30 litres of dinitrogen were taken for reaction which yielded only 50% of the expected product. What will the composition of the gaseous mixture under the aforesaid condition in the end?

Q3

What volume of hydrogen gas at 273 K and 1 atm pressure will be consumed in obtaining 21.6 g elemental boron (atomic mass = 10.8) from the reduction of boron trichloride by hydrogen? 

Q4

Which has maximum number of atoms? 

Q5

The maximum number of molecules is present in

Q6

4 g of copper was dissolved in concentrated nitric acid. The copper nitrate on strong heating gave 5 g of its oxide. The equivalent weight of copper is 

Q7

Number of atom of oxygen present in 10.6 g Na2CO3 will be 

Q8

A sample of phosphorous trichloride (PCl3) contains 1.4 moles of the substance. How many atoms are there is the sample?   

Q9

116 mg of a compound on vaporisation in a victor Meyer’s apparatus displace 44.8 mL of air measured at STP. The molecular weight of the compound is  

Q10

100 g CaCO3 is treated with 1 litre of 1 N HCl. What would be the weight of CO2 liberated after the completion of the reaction?