The first solution contributes 0.78*1 = 0.78 L of acid.
The second contributes 0.64*6 = 3.84 L of acid.
There will be 7 L total of the new solution, and 3.84 + 0.78 = 4.62 total L of acid in it. So the new solution has a concentration of 4.62/7 = 0.66, or about 66%.
Answer:
300
Step-by-step explanation:
5fg
5(6)(10)=300
Look at the problem and do it in order
Tan(40)= x/20 => x= tan(40).20= 16,78
Ok done. Thank to me:>
