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3 years ago

Under which conditions of temperature and pressure would helium behave most like an ideal gas?

2 answers:

8 0

At conditions 50 K and 20 kPa of temperature and pressure would helium behave most like an ideal gas. The answer is number 1. This is because the temperature is so low and the pressure is low too.

xenn [34]3 years ago

5 0

Answer : The correct option is, (3) 750 K and 20 kPa

Explanation :

The conditions for ideal gas are :

Ideal gas are those gas that has no intermolecular attractions.

Ideal gas are those gas that have negligible volume.

The ideal gas equation is,

$PV=nRT$

The conditions for real gas are :

Real gas are those gas that have intermolecular attractions.

Real gas are those gas that have volume.

The real gas equation is,

$(P+\frac{an^2}{V^2})(V-nb)=nRT$

A real gas behave ideally at high temperature and low pressure condition.

From the given options, option (3) have high temperature and low pressure is the correct option.

Hence, at 750 K and 20 kPa conditions of temperature and pressure does a sample of helium behave most like an ideal gas.

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olga_2 [115]

Answer:

The maximum wavelength of light for which a carbon-hydrogen single bond could be broken by absorbing a single photon = 290 nm

Explanation:

So to break a single C - H bond require = $\frac{412}{6.023 X (10)^{23} }$

= 6.84 x 10⁻¹⁹ joule

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⇒ E = $\frac{hc}{Wavelength}$

Where h = Planck's constant = 6.626 x 10⁻³⁴ J.K⁻¹.Mole⁻¹

c = speed of light = 3 x 10⁸ m/sec

Wavelength = $\frac{6.626 X 10^{-34} X 3 X 10^{8} }{6.84 X10^{-19} }$

= 2.9 x 10⁻⁷ m

= 290 nm

∵ 1 nm = 10⁻⁹ m

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3 years ago

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3 years ago