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3 years ago

Starting with acetylene and bromoethane, show how you would use reagents from the table to synthesize 3-hexanone.

Chemistry

1 answer:

Jobisdone [24]3 years ago

3 0

solution:

A = 192 x (1/2) ^ (15/5) = 192 x (1/2) ^3 = 192 x 1/8 = 24 mg

Starting by hitting acetylene with NaNH2 to deprotonate, this C-- will attack the C connected to the Br Sn2 style to lengthen the chain by two carbons.

Do this same thing again with the other CH of the acetylene and another bromoethaneto get a six carbon chain, namely, 3-hexyne.

Now, reduce the alkyne to an alkene via H2/Pd/C, and that gives 3-hexene.

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2. Combine lead (II) nitrate and potassium iodide solutions.

olga_2 [115]

Answer:

Pb(NO3)2+ 2Kl →PbI2 + 2KNO3

Mg + 2HCl → MgCl2 + H2

4H2O → 4H^+ + 4OH^-

2Mg + O2 → 2MgO

Explanation:

This question has to do with the balancing of chemical reaction equations. The general rule for balancing chemical reaction equation is that the number of atoms of each element on the left hand side of the reaction equation must be equal to the number of atoms of the same element on the right hand side of the reaction equation.

This principle was followed in balancing each reaction equation above. For instance, in the burning of magnesium, there are two atoms of both magnesium and oxygen on either side of the reaction equation.

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3 years ago

Stepping on a bag of potato chips would cause what type of change?

elena-14-01-66 [18.8K]

I'm pretty sure a physical change because it's affecting the form of the chemical substance, but not its chemical composition

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4 years ago

What is the boiling point of a solution of ethanol, C2H5OH and sugar that contains 20.0 g of the sugar in 250 g of water

wlad13 [49]

Boiling point of ethanol is 78.5 $^{0}C$

$K_{b}$ of ethanol is $1.22^{0}C/m$

The relationship between boiling point elevation of a solution and molality can be represented as,

Δ $T_{b} = K_{b} m$

Molality of the solution (m) = $20.0 g C_{12}H_{22}O_{11} * \frac{1 mol C_{12}H_{22}O_{11}}{342.3 gC_{12}H_{22}O_{11}} *\frac{1}{250 g solvent} * \frac{1000 g}{1 kg}$

= 0.234 m

$T_{b}(solution) - T_{b}(ethanol) = 1.22^{0}C/m$ $* ( 0.234 m)$

$T_{b}(solution) - 73.5 ^{0}C = 1.22^{0}C/m ( 0.234m)$

$T_{b}(solution) = 73.8^{0}C$

Therefore the boiling point of solution will be 73.8 $^{0}C$

5 0

3 years ago

A chemist has 500 ml of a 30% acid solution. She adds x milliliters of a 10% acid solution. Which statement is true about the gr

rosijanka [135]

Let y be concentration of the final solution:
y = (0.1x + 0.3(500))/(500 + x)
y = (0.1x + 150) / (500 + x)
The numerator contains the total amount of acid and the denominator contains the volume of the solution.

3 0

3 years ago

Cellular respiration uses sugar and _________ to produce carbon dioxide and water

Lyrx [107]

In cellular respiration, glucose and oxygen react to form ATP. Water and carbon dioxide are released as byproducts.

7 0

3 years ago