H A R D E S T C H E M I S T R Y Q U E S T I O N E V E R A S K E D !

Question

H A R D E S T    C H E M I S T R Y    Q U E S T I O N    E V E R    A S K E D !

nvidiaintely · Answer

What is the molarity of a solution that contains 85.0 grams of Na2SO4 in 325 milliliters of solution? (The mass of one mole of Na2SO4 is 142 grams.)
		
0.195 M
		
0.599 M
		
1.84 M
		
6.22 M

mikey · Answer

@Cas_fangirl_14

cas_fangirl_14 · Answer

I'm pretty sure it's C

zzr0ck3r · Answer

You probably don't want to post the "hardest" chemistry question in the math section.

mrnood · Answer

Why do you consider this the hardest?

"Molarity is defined as the number of moles of solute dissolved in 1 litre of solution."


The equation is simple, and you are given all the values you need

first work out what fraction of a mole is actually present
Then work out how many would be present if there was 1 litre of solution