[bigears1]

5.) A mixture of sodium chloride and sodium sulphate is known to contain 0.6 mol of chloride ions and 0.2 mol of sulphate ions.

How many moles of sodium ions are present.

A 0.4
B 0.5
C 0.8
D 1.0

how do you do this???

Thanks

[david__taylor]

Is the answer D. 1?

I got this by:

...........NaCl.................................................................Na2 SO4
1mole Cl <---> 1 mole Cl..................................2mole Na<---> 1 mole SO4
0.6mole Cl -> 0.6 mole Na....................................0.2mole SO4 <---> 0.4mole Na.

0.6 + 0.4 = 1.0mole of Na? Am i right, that's how my teacher told me how to do a question like that as I got stuck on a similar one.

[bred]

Yep.

[bigears1]

I see now, thanks a lot!