A water sample with 35 ppm by mass of lead pb find the
A water sample with 35 ppm( by mass) of lead Pb. Find the concentration of Pb in mg/L assuming fresh water.
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a 40 kg shell is shot with an initial velocity of magnitude 200 ms at an angle of 60o with the horizontal at the top of
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a water sample with 35 ppm by mass of lead pb find the concentration of pb in mgl assuming fresh
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