Question

What is the percentage of sodium in 75g of Nacl

Answer 1

One mole of sodium chloride has a mass of 58.5 g. We calculate this from the atomic masses of sodium and chlorine:

Atomic masses:

Sodium: 23

Chlorine: 35.5

Molecular mass = 23 + 35.5

  = 58.5

Now, you can see from the equation above that in 58.5g of NaCl, there are 23g of sodium. 

So, to find the grams of sodium in 75g NaCl, we would do the following calculations:

Grams of sodium in 75g NaCl = 23x75

  58.5

  = 29.5

Thus, there are 29.5 grams of sodium in

Answer 2

Answer:

29.487

23*75/(23+35.5)= 29.487