How many grams of a stock solution that is 87.5 percent H2SO4 by mass would be needed to make 275 grams of a 55.0 percent by mass solution? Show all of the work needed to solve this problem.

Question

sleepyjess · Answer

@Abhisar ?

abb0t · Answer

Where are you stuck?

sleepyjess · Answer

I really don't even know how to start

abb0t · Answer

Well, your final solution contains 55% by mass of sulfuric acid, and you have 275 g of that solution. So simply multiply them to get your mass of sulfuric acid. 

Rpeat the same with your 87%. stock solution.

abb0t · Answer

You can then set them equatl to each other as a proportion.

sleepyjess · Answer

.55*275 for the sulfuric acid?

abb0t · Answer

Yes. that is your final solution.