calculating percentage / problem

Question

Hi,

Can anyone help with my problem? I'm trying to figure out how they arrived to get 7% of actual magnesium is in 334.482 of magnesium orotate.

And then how I can calculate the how much magnesium is in 100mg of magnesium orotate?

Problem below:

Magnesium Orotate has a molecular weight of 334.482. Magnesium has a molecular weight of 24.31. So the % Mg in magnesium orotate is just 7%.

Answer 1

 

Yes, dividing the molecular weights:

 

   24.31 / 334.482 = 0.072679546 or just over 7.2%

 

 

There will be just over 7.2 mg of magnesium in the Mg orotate compound

as 7.2+ % of 100 = 7.2+