Respuesta :

Mass of NaCl = moles x molar mass of NaCl 
                       =   11 x 58.443
                       =      642.873 grams.

Hope this helps!

The weight of 11 moles of NaCl has been 643.5 grams.

Moles can be defined as the ratio of mass to molecular mass.

Molecular weight of NaCl = weight of Na + weight of Cl

Molecular weight of NaCl = 23 + 35.5 g/mol

Molecular weight of NaCl = 58.5 g/mol

Moles = [tex]\rm \dfrac{weight}{molecular\;weight}[/tex]

Weight = moles [tex]\times[/tex] molecular weight

Weight of 11 moles NaCl = 11 [tex]\times[/tex] 58.5

Weight of NaCl = 643.5 grams

The weight of 11 moles of NaCl has been 643.5 grams.

For more information about the grams in moles, refer to the link:

https://brainly.com/question/19007057