The 25L cylinder contains a mixture of oxygen and nitrogen, in which oxygen is 36%. A few liters of mixture was removed and replaced with nitrogen and this was done once more. In the end 9% oxygen remains. Find out how much mixture came out at one go.
Answers
Answered by
1
Answer:
ok it is fine
Step-by-step explanation:
the Answer is I don't know sry for it
Answered by
1
Answer:
9.31L
Step-by-step explanation:
Oxygen in cylinder (initially) = 36% of 25L = (36×25)/100 = 9L
Oxygen in cylinder (after removing) = 9% of 25L = 2.25L
Removed oxygen = 9L - 2.25L = 6.75L
Nitrogen in cylinder (initially) = 64% of 25L = (64×25)/100 = 16L
let x liters of mixture is removed once, the total mixture which came out is 2x
2x = 6.75L + 16% of 16L = 6.75L + (16×16)/100L = 6.75L + 2.56L = 9.31L
Similar questions