SOLUTION: A flask containing 300ml of 90% nitrite solution tips over spilling part of its contents. This was subsequently replaced by an equal amount from a mixture of 30% nitrate. If an 80%

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Question 778872: A flask containing 300ml of 90% nitrite solution tips over spilling part of its contents. This was subsequently replaced by an equal amount from a mixture of 30% nitrate. If an 80% solution resulted, how much was spilled ?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
A flask containing 300ml of 90% nitrite solution tips over spilling part of its contents. This was subsequently replaced by an equal amount from a mixture of 30% nitrate. If an 80% solution resulted, how much was spilled ?
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Equation:
nitrite - nitrite + nitrite = nitrite
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0.90*300 - 0.90x + 0.30x = 0.80*300
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90*300 - 90x + 30x = 80*300
-60x = -10*300
x = 50 ml (amt that was spilled)
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Cheers,
Stan H.
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