Calculate the number of CO2 molecules in 0.0334 molmol of CO2.

Express your answer using three significant figures.

2.01×10²² molecules are in 0.0334 moles of CO₂

Explanation:

The relation we must to know, is that one mol is occupied by 6.02×10²³ molecules.

In order to calculate the number of dioxide molecules we can do this conversion → from moles to number of molecules

0.0334 mol . 6.02×10²³ molecules / 1 mol =2.01×10²² molecules

We can also propose a rule of three:

1 mol contains 6.02×10²³ molecules

0.0334 moles will be contained by (0.0334 . 6.02×10²³) / 1 = 2.01×10²²

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