2 years ago

Which options identify what the arrows in the diagram

Chemistry

1 answer:

Stolb23 [73]2 years ago

8 0

Answer:

Explanation:

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I don’t quite understand

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For the following molecules, what is the order of Bronsted acidity, from highest to lowest

tankabanditka [31]

Answer:

Rank these compounds in order of increasing basicity. (Least basic to most basic)

a. C, B, A

b. B, A, C

c. C, A, B

d. A, B, C

ANSWER: d

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Melatonin has the chemical formula C13H16N2O2. Less than 10 milligrams(0.01g) Convert the melatonin to moles

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Answer: There are 0.000043 moles of melatonin.

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number $6.023\times 10^{23}$ of particles.

To calculate the moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}$

given mass = 10 mg = 0.01 g

molar mass of $C_{13}H_{16}N_2O_2$ = 232.28 g

${\text {moles of melatonin}}=\frac{0.01g}{232.28g/mol}=0.000043moles$

Thus there are 0.000043 moles of melatonin

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Although 12 is the stable form of iodine at low

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The first option----A

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