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Q.5       Calculate the following                                                  5        D/A
                         a)  Calculate the number of particles present in 56 g of N2
                            molecule.
                         b)  A sample of ethane (C2H6) gas has the same mass as
                                    20
                            1.5X10 molecules of methane (CH4). How many C2H6
                            molecules does the sample of gas contain?
                         c)  What is the mass of 0.5 mole of oxygen gas


               NCERT TEXT BOOK
               Pg No. 42 Q 1. And 2
               Pg No 44 Q.7,8,9,10 and 11.


               Subjective:
























































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