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What is the quantity of na2co3 (g) necessary for preparing 5L of solution 1N

Răspuns :

Puia68
c= 1N-----.>  1l contine 1 echivalent-gram Na2CO3
                      5L.............................5 echivalnti gram
 M= (2X23gNa+12gC+3x16gO)/mol Na2CO3--> 106g/mol
 E=M/2----> 53g/echiv-gram
m-= 5echiv-gramx53g/echiv-gram=       calculeaza ,please!!!!!!

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