Find the constant term in the expansion of [In which equation is the metal reduced?
(a) 2[MnO– + 5[C2O4]2– + 16H+ → 2Mn+ + 10CO2 + 8H2O
(b) [Cr2O7]2– + 2[OH]– → 2[CrO4]2– + H2O
© CuCO3 + 2HCl → CuCl2 + CO2 + H2O
(d) Mg + 2HCl → MgCl2 + H2

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

→

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