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Irina18 [472]
3 years ago
11

A flask containing neon gas is connected to an open-endedmercury manometer. The open end is exposed to the atmosphere, wherethe

prevailing pressure is 745 torr. The mercury level in the openarm is 50 mm below that in the arm connected to the flask of neon.What is the neon pressure, in torr?
A. -50 torr

B. 50 torr

C. 695 torr

D. 795 torr

E. None of these choices is correct.
Chemistry
1 answer:
Tasya [4]3 years ago
5 0

Answer: Option (C) is the correct answer.

Explanation:

The given data is as follows.

          P_{bar} = 745 torr

          \Delta P = - 50 (the value is negative because on the open side its level is lower than the side connected to the gas)

Now, formula to calculate the pressure of neon gas will be as follows.

                 P_{neon} = P_{bar} + \Delta P            

Putting the given values into the above formula as follows.

               P_{neon} = P_{bar} + \Delta P        

                   = 745 torr + (- 50 torr)            

                   = 695 torr

Thus, we can conclude that the neon pressure is 695 torr.

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Answer:

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Explanation:

There's is no further explanation for this.

All the electrons in an energy level are distribuited according to the period in the periodic table they are.

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Electrons in the 3d sublevel, are found mostly in all the transition metals of period 3, and it can go from 1 to 10 electrons. To be with the 3d sub level it's neccesary that the energy level to be 3.

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2 years ago
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Explanation:

1. Elements are substances made of the same kind of atoms, unlike compounds that are combination for different kinds of atoms. The elements in the reaction therefore are;

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3 years ago
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Answer:

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Explanation:

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This is a system of two equations with two unknowns. We will proceed to solve for x. First, an expression for y is found:

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This expression is substituted into the first equation and we solve for x.

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(100 mL)(0.7) = 70 mL

Similarly, the volume of 15% HCl we need is:

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