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irina [24]
3 years ago
9

How does a water molecule transfer from the ocean to form part of a cloud in the atmosphere? A. precipitation from the ocean and

then evaporation into a cloud B. condensation from the ocean and then evaporation into a cloud C. precipitation from the ocean and then collection into a cloud D. evaporation from the ocean and then condensation into a cloud
Chemistry
1 answer:
swat323 years ago
6 0
D because evaporation travels the water through the air and condensation turns it into clouds
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What is the average kinetic energy and rms speed of N₂ molecules at STP? Compare these values with those of H₂ molecules at STP.
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The average kinetic energy and rms speed of N₂ molecules at STP is 5.65686 \times 10^{-21} and $493 \mathrm{~m} / \mathrm{s}$

Given,

$$\begin{aligned}&\mathrm{P}=1.013 \times 10^{5} \mathrm{~Pa} \\&\mathrm{~T}=273.15 \mathrm{~K} \\&\rho=1.25 \mathrm{~kg} / \mathrm{m}^{3}\end{aligned}$$

The average kinetic energy of a molecule is given by, $K . E .=\frac{3}{2} k T$ where k is the Boltzmann constant and Tis the absolute temperature of the gas.

K . E .=\frac{3}{2} \times $1.380649 \times 10^{-23}$ \times 273.15 K

K.E=$5.65686 \times10^{-21}$

The rms speed of $\mathrm{N}_{2}$ molecules is given by

$$\begin{aligned}&\mathrm{V}_{\mathrm{rms}}=\sqrt{\frac{3 \mathrm{RT}}{\mathrm{M}}}=\sqrt{\frac{3 \mathrm{P}}{\rho}} \\&\mathrm{V}_{\mathrm{rms}}=\sqrt{\frac{3 \mathrm{P}}{\rho}} \\&\mathrm{V}_{\mathrm{rms}}=\sqrt{\frac{3 \times 1.013 \times 10^{5}}{1.25}}=493 \mathrm{~m} / \mathrm{s}\end{aligned}$$

The average kinetic energy of a gas's particles is inversely related to its temperature. As the gas warms, the particles must travel more quickly since their mass is constant.

The average kinetic energy (K) is equal to one half of the mass (m) of each gas molecule times the RMS speed (vrms) squared.

Learn more about  average kinetic energy brainly.com/question/1599923

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In short, the tendency of an atom to fill its valence shell and attain a stable state it acquires or donates the electron is called as octet rule.

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