Expain why 4-methyl pentane is not a correct name

Chemistry

1 answer:

ziro4ka [17]3 years ago

8 0

Answer: 2-Methylpentane

Explanation: The numbering is not brought to a minimum.

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how much sodium chloride must be added to 100 mL of water so that its concentration is 20 parts per million assume that the dens

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Part per million is unit that equal to mg/kg of water or simply $10^{-6}$ . In this case, you asked how much NaCl needed and know the volume of water(100mL), concentration(20ppm or 20 mg/kg) and water density.
Then, the equation would be

concentration = NaCl weight/ water weight
20 x $10^{-6}$ mg= NaCl weight/ (100ml x 1g/ml)
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