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3 years ago

Convert a pressure of 0.0248 mm Hg to the equivalent pressure in pascals (Pa).

Chemistry

1 answer:

drek231 [11]3 years ago

5 0

Answer is 3.306 Pa.

Explanation:

This is a simple unit conversion problem.

1 atm = 760 mmHg = 101325 Pa

Hence,

0.0248 mmHg = (101325 Pa / 760 mmHg) x 0.0248 mmHg

= 3.306 Pa

Pressure can be measured by using many units such as atm, Pa, torr, bar, cmHg, mmHg and so on.

The relationships among those units as follows

1 atm = 101325 Pa = 1.01325 bar = 760 torr, 760 mmHg = 76 cmHg

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Answer:

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What is a non-example for an Electric circuit?

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Explanation:

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lord [1]

Answer:

The energy required to ionize the ground-state hydrogen atom is 2.18 x 10^-18 J or 13.6 eV.

Explanation:

To find the energy required to ionize ground-state hydrogen atom first we calculate the wavelength of photon required for this operation.

It is given by Bohr's Theory as:

1/λ = Rh (1/n1² - 1/n2²)

where,

λ = wavelength of photon

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n2 = final state = ∞ (since, electron goes far away from atom after ionization)

Rh = Rhydberg's Constant = 1.097 x 10^7 /m

Therefore,

1/λ = (1.097 x 10^7 /m)(1/1² - 1/∞²)

λ = 9.115 x 10^-8 m = 91.15 nm

Now, for energy (E) we know that:

E = hc/λ

where,

h = Plank's Constant = 6.625 x 10^-34 J.s

c = speed of light = 3 x 10^8 m/s

Therefore,

E = (6.625 x 10^-34 J.s)(3 x 10^8 m/s)/(9.115 x 10^-8 m)

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