Hey all,

Im not too hot with the Chemistry or Math and have a problem I need help with.

There are 4 different chemical compounds in a 450g powdered mixture:

Sodium Bicarbonate, Potassium Bicarbonate, Magnesium Chloride, Calcium Carbonate

I know the quantity of the following elements contained in this mixture per 5g serving:

Ca (32mg), Mg (20 mg), Na (620 mg) and K (814 mg)

What I want to figure out is how much Sodium Bicarbonate, Potassium Bicarbonate, Magnesium Chloride and Calcium Carbonate have been individually used in the total 450g mixture to arrive at these numbers per 5g serving, and then how much would I need of each to make a 1000g mixture.

I have made a start with the calculations....

My understanding based on some internet searching is that I need to know the 'Molar Mass' of each compound first, and then the 'Atomic Weight' of each element.

So for Sodium bicarbonate I have Mol Mass = 84.0066g;

and the Atomic Weight is 22.99

To find out how much Sodium is in 1g, i'm dividing 22.99 by 84.0066 and multiplying the answer by 1 which equals 0.274g/g, or 274mgs per 1000mgs.

The amount of Sodium in the 5g mixture is 620mgs which by my calculations equals 2.26g (2260mgs) of Sodium bicarbonate per 5g, multiplied by 200 (to get the 1000g amount) = 452g of Sodium bicarbonate per 1000g. Am I close?

I did the Magnesium Chloride hexahydrate calculation too.

Molar mass: 203.31

Atomic weight of Magnesium: 24.305

Then, 24.305 divided by 203.31 multiplied by 1 = 0.12g/g, or 120mgs per 1000mgs. The amount of Magnesium in the 5g mixture is 20mgs which works out to be around 0.17g (170mgs) of Magnesium chloride per 5g, times 200 = 34g per 1000g.

If those two are correct I can work out the other two remaining compounds myself obviously. Just need someone to check the Math and steer me in the right direction.

Thanks.