Homework Statement

I was practising questions from a book printed in the 1980s, and I'm unsure where I went wrong with this Q, the answer is 68.2%

Relevant Equations

I dont use equations for chemistry mole calculations, i just think my way through it so I don't know

Suppose the 0.500g of reactant contains x grams of ##NaHCO_3## and y grams, of ##Na_2CO_3##.

Can you set up 2 simultaneous equations for x and y and solve them?

Edit: ask for hints if you can't!

100 mole/(cm)^3

------------------------------------
THAT above is obviously wrong. This is the kind of trouble I have when I do things strictly through keyboard and computer screen. My work later using pen and paper was bettter.

Should have that been like so:
0.100 (moles/dm^3)*(1/10)(dm/cm)(1/10)(dm/cm)(1/10)(dm/cm)
0.100(1/1000)(moles/cm^3)
0.000100 moles per cubic centimeter

Maybe this could reassure you or maybe not:
1 decimeter is 10 centimeters.

0.100 mole/(dm^3) * (10/1)^3(dm/cm)^3

100 mole/(cm)^3