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Debora [2.8K]
3 years ago
11

Which formula represents a polar molecule

Chemistry
1 answer:
krek1111 [17]3 years ago
8 0

Answer:

the formula that represents a polar molecule is NH3 the 3 is small and toward the bottom

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Why is steam distillation prefered over fractional distillation for the extraction of essencial oils?​
frez [133]

Answer:

Because , the advantage of steam distillation over simple distillation is that the lower boiling point reduces decomposition of temperature-sensitive compounds. Steam distillation is useful for the purification of organic compounds, although vacuum distillation is more common

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3 years ago
How many molecules are in 3.8 mols of copper?
ioda

Answer:

Hi there!

The correct answer is 2.29 x 10^{24} molecules

Explanation:

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5 0
4 years ago
In class we derived the Gibbs energy of mixing for a binary mixture of perfect gases. We also discussed that the same result is
GaryK [48]

Answer:

Attached below

Explanation:

Free energy of mixing = ΔGmix = Gf - Gi

attached below is the required derivation of the

<u>a) Molar Gibbs energy of mixing</u>

ΔGmix = Gf - Gi

hence : ΔGmix = ∩RT ( X1 In X1 + X2 In X2 + X3 In X3 + ------- )

<u>b) molar excess Gibbs energy of mixing</u>

Ni = chemical potential of gas

fi = Fugacity

N°i = Chemical potential of gas when Fugacity = 1

ΔG = RT In ( a2 / a1 )  

4 0
3 years ago
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