2 years ago

What is this thermodynamic?

Chemistry

1 answer:

VLD [36.1K]2 years ago

6 0

Answer:

oh coooool

I have one Id it is on ace with maybe 5800 points

maybe this picture will help in something

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As a pendulum swing from its highest to its lowest position along an arc, what happens to its kinetic energy and potential energ

Hatshy [7]

Answer:

B.The potential energy decreases while the kinetic energy increases.

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3 years ago

Find the boiling point temperature at 760 torr of an isomer of octane, c8h18, if its enthalpy of vaporization is 38,210 j mol-1

mixas84 [53]

According to Clausius-Clayperon equation,

$ln(\frac{P_{1} }{P_{2} }) = \frac{delta H_{vap} }{R} (\frac{1}{T_{2} }-\frac{1}{T_{1} } )$

$P_{1}$ is the vapor pressure at boiling point = 760 torr

$P_{2}$ is the vapor pressure at T_{2} =638.43 torr

Temperature $T_{2} = 110.0^{0}C + 273 = 383 K$

Δ $H_{vap} = 38210 J/mol$

Plugging in the values, we get

$ln(\frac{P_{1} }{P_{2} }) = \frac{delta H_{vap} }{R} (\frac{1}{T_{2} }-\frac{1}{T_{1} } )$

ln $\frac{760 torr}{638.43 torr} =\frac{38210 J/mol}{8.314 J/(mol.K)} (\frac{1}{383 K}-\frac{1}{T_{1} }$

$T_{1} = 389 K$

Therefore, the boiling point of octane = 389 K - 273 = $116^{0}C$

7 0

3 years ago

Copper roofs on houses form patina (copper carbonates) over the course of years due to the reaction with oxygen, carbon dioxide

ale4655 [162]

Answer:

The answer is "Choice A".

Explanation:

In this question, the choice A is wrong because when the copper panels on houses produce a patina (copper oxide) through occur as a consequence of reactions from oxygen and water in the air, these reaction does not have low activation energy because lower activation energy that is stored in a faster response rate.

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3 years ago

An object with a mass of 3.5 g raises the level of water in a graduated cylinder from 25.1 mL to 31.7 mL. What is the density of

vodomira [7]

density of the object = 0.53 g/mL

Explanation:

First we need to find the volume of the object which is equal to the rise of the water in the graduated cylinder:

volume = 31.7 - 25.1 = 6.6 mL

Now we calculate the density of the object using the following formula:

density = mass / volume

density = 3.5 g / 6.6 mL

density = 0.53 g/mL

Learn more about:

density

brainly.com/question/14177957

#learnwithBrainly

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3 years ago

When two substances are mixed and light is produced is it a chemical or physical change?

ziro4ka [17]

Chemical because its mixing two chemicals which are substances

8 0

3 years ago

Read 2 more answers

What is this thermodynamic?​

What is this thermodynamic?