To what volume should you dilute 22.5 mL of a 11.0 M H2SO4 solution to obtain a 0.160 M H2SO4 solution?

First find how many mols you have in original solution (note convert mL to L):

n = (22.5/1000) L * 11 mol/L = 0.2475 mols

now find the volume required for 0.16 mol/L:

v = (1/0.16) L/mol * 0.2475 = 1.54 L

Hope that Helps

First, convert your mL to L:

22.5 mL x 1L/1000mL = 0.0225 L H2SO4 solution

Next, determine how many moles of H2SO4 you have in your original solution:

11 mol/L x 0.0225 L = 0.2475 mol H2SO4

This tells you that you have 0.2475 mol H2SO4 in your solution.

Finally, you know that you want the final molarity to be 0.160 mol/L, so you need to multiply the amount of H2SO4 you have from the previous step by the inverse of the molarity you want (so your units work out nicely).

0.2475 mol x 1L/0.160mol = 1.54 L

You need a total volume of 1.54 liters.

For the main section, it relies upon on what's inflicting the insomnia. to illustrate, while you're continuously being woken up at night simply by sleep apnea, often that's usually cured via surgical technique of the sinuses. Alternately, in case you do no longer sleep because of the fact your mattress is uncomfortable, a sparkling mattress will bypass an prolonged way. each now and then rigidity reasons insomnia, and getting a sparkling job can help. no count if that's heavily a persistent difficulty, i want to advise which you seek for a snooze health facility on your section, to have your difficulty analyzed on a scientific foundation. For what it relatively is nicely worth, my daughter had good success employing melatonin.