Verified answer

   150 г                                           Х г

   СН4         +          2О2        =      СО2       +       2Н2О

n = 1 моль                                      n = 1 моль

M= 16 г/моль                               M = 44 г/моль

m = 16 г                                          m = 44 г

150 г СН4    -   Х г СО2

16 г СН4      -   44 г СО2

m(CO2) = 150 * 44 / 16 = 412,5 г