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3 years ago

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Name the following hydrocarbons

2 answers:

notka56 [123]3 years ago

7 0

Answer:

idk

Explanation:fah ogeq

svetoff [14.1K]3 years ago

4 0

Answer:

1) 3-methylpentane 2)Butyne

Explanation:

On the first molecule, we have a methyl group on the 3rd carbon, so you will have "3-methhyl". It's a 5 carbon molecule with no double bonds, so "-pentane" is required.

On the second molecule, we have a simple 4 carbon molecule with a triple bond which makes it an Alkyne. 4 carbons makes the prefix "but-" and a alkyne males the ending "-yne".

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If you have a solution that contains 46.85 g of codeine, C18H21NO3, in 125.5 g of ethanol, C2H5OH, what is the mole fraction of

irakobra [83]

Answer:

0.22

Explanation:

Given, Mass of $C_{18}H_{21}NO_3$ = 46.85 g

Molar mass of $C_{18}H_{21}NO_3$ = 299.4 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$Moles= \frac{46.85\ g}{299.4\ g/mol}$

$Moles\ of\ C_{18}H_{21}NO_3= 0.1565\ mol$

Given, Mass of $C_{2}H_{5}OH$ = 125.5 g

Molar mass of $C_{2}H_{5}OH$ = 46.07 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$Moles= \frac{125.5\ g}{46.07\ g/mol}$

$Moles\ of\ C_{2}H_{5}OH= 0.5535\ mol$

So, according to definition of mole fraction:

$Mole\ fraction\ of\ codeine=\frac {n_{codeine}}{n_{codeine}+n_{ethanol}}$

$Mole\ fraction\ of\ codeine=\frac{0.1565}{0.1565+0.5535}=0.22$

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What is the transition element which despite its strength (rigidity), it is characterized by being ductile, and by its high resi

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Deffense [45]

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3 years ago

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kap26 [50]

Answer:

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Explanation:

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