Question

calculate the number of moles 50g of cacl2​

Answer 1

Answer:

2.22 moles

Explanation:

Formula: CaCl2

GMW of CaCl2:   (40) + (2(35.5)

                          = 40+ 71

                          = 111 grams (molecular weight of CaCl2)

 [took 2 x 35.5 because there are 2 atoms of chlorine.

So, now you have to find moles:  

See,

Molecular weight of an element or compound =     1 mole (everytime)

So, similarly, Let 'x' be the number of moles in 46 g of ethanol

           Molecular weight of CaCl2(111 g)       =       1 mole

then for

                     50 gram of CaCl2            =         x moles

Her you have to cross multiply......so....

                             x                 =           111 /50  

                                              = 2.22  moles.

Hope it helps:)