Question

Calculeaza numarul de moli continuti din 4.4g in 440si in 44 de dioxid de carbon

Answer 1

nr. moli CO2                   Se calculeaza masa moleculara aCO2
4,4 g CO2                       M=12+2.16=44
440 g CO2                     44 g CO2----------1mol CO2
44 g CO2                        4,4 g CO2----------X
                                       X=4,4:44=0,1 moli CO2

                                      44g CO2--------------1mol CO2
                                      440 g CO2------------Y
                                      Y=440:44=10 moli CO2

                                   
                                     44g CO2---------------1mol CO2
                                     44g CO2-------------------Z
                                     Z=44:44 =1mol CO2