Answer to Question #97918 in General Chemistry for kamil

Question

The concebtration of Na in 5kg beef is (1mol)/(kg). calculate the Na content in grammes

Answer 1

Q97918

Solution:

Given: Concentraion of Sodium in given sample of beef is $1mol/kg$

Quantity of beef sample $=5kg.$

$\implies$ Total amount of sodium in the sample $=conentraion(per kg.)*Total quantity$

$=(1 mol/kg)*5 kg.$

$=5 mol.$

We know that; $no. of moles=(given weight)/(atomic weight)$

$\implies Weight=(no. of moles)*(atomic weight)$

$=(5mol)*(23gm/mol)$

$=115 gms.$ (Answer)

Thus, the Na content in the 5 kg beef sample (in grams) is $115 gms.$