HELP ASAP!! WILL FAN AND MEDAL!!

1. 3 ml of a 66% acid solution was mixed with 8 ml of water. Find the concentration of the new mixture.

(2 is already done)

3. A metal alloy weighing 3 mg and containing 50% copper is melted and mixed with 9 mg of a different alloy which contains 10% copper. What percent of the resulting alloy is copper?

Question

HELP ASAP!! WILL FAN AND MEDAL!!

1. 3 ml of a 66% acid solution was mixed with 8 ml of water. Find the concentration of the new mixture.

(2 is already done)

3. A metal alloy weighing 3 mg and containing 50% copper is melted and mixed with 9 mg of a different alloy which contains 10% copper. What percent of the resulting alloy is copper?

nottim · Answer

Should ask this in chemistry, not math.

nottim · Answer

but what ahveyou done for question 1?

tkhunny · Answer

1. 3 ml of a 66% acid solution was mixed with 8 ml of water. Find the concentration of the new mixture.

Add the water

3 ml * (34% Water) + 8 ml (100% Water) = 11 ml (X% Water)

Or

Add the Acid

3 ml * (66% Acid) + 8 ml (0% Acid) = 11 ml (Y% Acid)

That's all.

ilovemath14 · Answer

why in Chemistry @NotTim

nottim · Answer

i thought it was chem

tkhunny · Answer

Did you find the solutions?  #3 is almost exactly the same.

tkhunny · Answer

Oh, and VERY GOOD work on your ID Name.  :-)

ilovemath14 · Answer

yes and thank you @tkhunny