Help ASAP !!!!!!!!!!!!!!!!!!
2 answers:
You might be interested in
Answer:
<em>37.3° </em>
Step-by-step explanation:
sin β = ⇒ β = arcsin
= <em>37.3°</em>
Suppose you add x liters of pure water to the 10 L of 25% acid solution. The new solution's volume is x + 10 L. Each L of pure water contributes no acid, while the starting solution contains 2.5 L of acid. So in the new solution, you end up with a concentration of (2.5 L)/(x + 10 L), and you want this concentration to be 10%. So we have
and so you would need to add 15 L of pure water to get the desired concentration of acid.