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3 years ago

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Chemistry

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inn [45]3 years ago

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Answer:

маликулярная масса ровна 23

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What is the final temperature, in degrees Celsius, of the gas in the bubble outside the volcano if the final volume of the bubbl

lawyer [7]

The question is incomplete, here is the complete question:

A 127 mL bubble of hot gases at 213°C and 1.89 atm is emitted from an active volcano.

What is the final temperature, in degrees Celsius, of the gas in the bubble outside the volcano if the final volume of the bubble is 136 mL and the pressure is 0.850 atm , if the amount of gas does not change?

Answer: The temperature of the gas is -40°C

Explanation:

To calculate the volume when temperature and pressure has changed, we use the equation given by combined gas law.

The equation follows:

$\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}$

where,

$P_1,V_1\text{ and }T_1$ are the initial pressure, volume and temperature of the gas

$P_2,V_2\text{ and }T_2$ are the final pressure, volume and temperature of the gas

We are given:

$P_1=1.89atm\\V_1=127mL\\T_1=213^oC=[213+273]K=484K\\P_2=0.850atm\\V_2=136mL\\T_2=?$

Putting values in above equation, we get:

$\frac{1.89atm\times 127mL}{484K}=\frac{0.850atm\times 136mL}{T_2}\\\\T_2=\frac{0.850\times 136\times 484}{1.89\times 127}=233K$

Converting the temperature from kelvins to degree Celsius, by using the conversion factor:

$T(K)=T(^oC)+273$

$233=T(^oC)+273\\\\T(^oC)=-40^oC$

Hence, the temperature of the gas is -40°C

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You have three drinks in front of you. you know how they are made, but are unsure which one has the highest concentration of jui

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Forces that act between two molecules are referred to as intermolecular forces true or false

julsineya [31]

Answer:
TRUE: Forces that act between two molecules are referred to as Intermolecular Forces.

Explanation:
Those forces which are present within the molecule among atoms are called as Intramolecular Forces, while, The forces which are present between two molecules are called as Intermolecular Forces. Intermolecular Forces are as follow,

1) Hydrogen Bond Interactions

2) Dipole-Dipole Interactions

3) London Dispersion Forces

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