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-BARSIC- [3]
4 years ago
5

Which one of the following best represents the predicted approximate chemical shift and coupling:

Chemistry
1 answer:
mezya [45]4 years ago
4 0

Answer:

C. 3.40 ppm, singlet

Explanation:

Given the information from the question .we have to select the best representation for represents the predicted approximate chemical shift and coupling for hydrogen(s). In this case, there is no neighboring hydrogen .Thus there won’t be any split .the best option answer is C. 3.40 ppm, singlet . Therefore the correct answer or option is C. 3.40 ppm, singlet.

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If 60. liters of hydrogen gas at 546 K is cooled to 273 K at constant pressure, the new volume of the gas would be
Korvikt [17]

Answer:30 L

Explanation:

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=

V

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=

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i

t

e

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Initial Temperature

=

T

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=

546

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Final Temperature

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T

2

=

273

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Final Vloume

=

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2

=

?

?

Sol:-

Since the pressure is constant and the question is asking about temperature and volume, i.e,

V

1

T

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=

V

2

T

2

⇒

V

2

=

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T

2

T

1

=

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273

546

=

60

2

=

30

l

i

t

e

r

⇒

V

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=

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t

e

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Hence the new volume of the gas is

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6 0
3 years ago
Which begins as chemical energy and can be transformed into electricity?
Umnica [9.8K]
Sunlight i think thats the answer
8 0
3 years ago
The decomposition of acetaldehyde is a second order reaction with a rate constant of 4.71 10−8 L/mol/s. What is the instantaneou
pochemuha

Answer: Rate of decomposition of acetaldehyde in a solution is 1.45\times 10^{-14}mol/Ls

Explanation:

Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.

For a reaction : A\rightarrow products

Rate=k[A]^x

k= rate constant

x = order of the reaction = 2

Rate=4.71\times 10^{-8}L/mol/s\times {5.55\times 10^{-4}M}^2

Rate=1.45\times 10^{-14}

Thus rate of decomposition of acetaldehyde in a solution is 1.45\times 10^{-14}mol/Ls

6 0
3 years ago
Give the volume indicated. Be sure to include all significant figures.
miskamm [114]

Answer: -

71

Explanation: -

From the diagram, we see that volume goes from 70 to 75 in 5 markings.

Each marking is for 1.

It is the most accuracy possible as there is no smaller marking.

Significant figures expresses the required amount of accuracy.

Thus the volume indicated from the diagram is 71 .

8 0
3 years ago
Read 2 more answers
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WARRIOR [948]

Answer:

see below

Explanation:

1- lattice

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3- positive

4- negative

5- alternate

6- strong

7- bonds

8- giant

7 0
3 years ago
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