2 years ago

What type of reaction releases energy in the form of heat and sometimes light?

1 answer:

5 0

What type of reaction releases energy in the form of heat and sometimes light?
Answer: Exothermic Energy
Good luck on your exam!

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Ira Lisetskai [31]

C. A lipid with three unsaturated fatty acids.
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oee [108]

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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miv72 [106K]

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B.) He added a base to raise the PH

Explanation:

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