Answer:hrhdhf end b
Step-by-step explanation:
Rndjdbajrcb
Answer How many liters of a 20% acid solution should be mixed with 30 liters of 50% acid solution in order to obtain a 40% solution. ... x=15 liters 15*(.20 pure acid)=3 liters 30*(.50 pure acid)=15 liters That is 18 liters pure acid That is 45 liters solution *0.45 pure acid=18 liters.
As more pure acid is added, the concentration of acid approaches 0.
-7x+4 i’m not sure if it’s correct but i hope it is. sorry if it’s not
