БЕЗ СПАМА А ДВЙТЕ НОРМАЛЬНЫЕ ОТВЕТЫ

   Х г                                                                                 4,48 л

    2Na          +         2 H2O        =       2NaOH         +        H2

n = 2 моль                                                                       n = 1 моль

Mr = 23 г/моль                                                                 Vm = 22,4 л/ моль

m = 46 г                                                                            V = 22,4 л

Х г Na     -     4,48 л Н2

46 г Na    -    22,4 л Н2

m(Na) = 4,48 * 46 / 22,4 = 9,2 г

   Х г                                                                                 4,48 л

    2Na          +         2 H2O        =       2NaOH         +        H2

n = 2 моль                                                                       n = 1 моль

Mr = 23 г/моль                                                                 Vm = 22,4 л/ моль

m = 46 г                                                                            V = 22,4 л

Х г Na     -     4,48 л Н2

46 г Na    -    22,4 л Н2

m(Na) = 4,48 * 46 / 22,4 = 9,2 г