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Firdavs [7]
3 years ago
15

3.9 X 1022 molecules of CO2 = _ moles of CO2

Chemistry
1 answer:
agasfer [191]3 years ago
7 0

Answer:

moles CO2 = 0.065 moles

Explanation:

  • mole = 6.022 E23 molecules.....Avogadro

∴ molecules CO2 = 3.9 E22 molecules

⇒ moles CO2 = (3.9 E22 molecules CO2)×( moles CO2/ 6.022 E23 molecules CO2)

⇒ moles CO2 = 0.065 moles

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New research shows that a red food colouring with an R value of 0.62 (when a particular solvent and temperature are used) could
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It is recommended only for the second type of candy to be taken off the market.

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The Rf value is calculated using the following formula:

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Now, let's find out if any of the components has an Rf equal to 0,62.

Note: To determine the distances I measured the image using a ruler and you can do the same, this will not alter the results.

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This means sample 2 has the 0.62 Rf value and therefore it needs to be taken off the market.

Learn more about chromatography in: brainly.com/question/10296715

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