Chemistry homework of XI

1.Calculate the percentage of S in Na2S2O3 (Na =23, S =32, O =16)
2.Calculate the number of moles of CO2 molecules in 2.24 mL of CO2 at NTP .
3.Distinguish between alloys and amalgam. Give one example for each.
4.State Avogadro' s hypothesis.
5.At what condition the value P x V is always constant?
6.Define universal gas constant and derive its value in SI unit.
7.State Boyle's law and Charle's law and derive ideal gas equation.
8.What do you mean by redox reaction?Justify with an example.
9.Describe the principle involved in the manufacture of ammonia by Haber' s process.

 To be submitted on given time