Chem consider a sample of 10.0 g of the gaseous hydrocarbon c2h6 to answer the following question: how many carbon atoms are present in a 10.0 g sample? (the question is asking for the number of carbons in the sample, not the molecule).
when answering the question, include the following:
state how to find the number of atoms for carbon in a 10.0 g sample.
state how you know if you need to multiply or divide by avogadro’s number.
give the correct number of significant figures and explain why the answer has that many significant figures.

answer : (a) volume of the gas = 8.67 ×   l

                (b) second virial coefficient b = -1.21226 l/mole

solution :   given,     t = 300k

                                p = 20atm

                                z = 0.86

                                n = 8.2 mmoles = 8.2 × moles

                                r =   0.082 l atm/k/mol

        find,     (a) volume of gas   and (b) second virial coefficient b at 300k.

formula used :            

                          and            

(a)            

                    = \times 0.082\times 300}{20}[/tex]

                    = 8.67 ×   l

(b)      

                    = (0.00867-1) × 8.659

                    = - 8.5839 l/mole