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3 years ago

What can not be separated easily or, sometimes at all

1 answer:

8 0

Pure Substances cannot be separated easily or, sometimes at all.

I hope this is the answer you were looking for and that it helps!! :)

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At 47c a gas has a pressure of 140kpa. The gas is cooled until the pressure decreases to 105kpa. If the volume remains constant,

IgorC [24]

Answer:

The final temperature is equal to 240 K or -33.15°C

Explanation:

Given that,

Initial temperature of the gas, T₁ = 47°C = 320 K

Initial pressure, P₁ = 140 kpa

Final pressure, P₂ = 105 kpa

We need to find the final temperature if the volume remains constant. The relation between temperature and pressure is given by :

$P\propto T$

$\dfrac{P_1}{P_2}=\dfrac{T_1}{T_2}\\\\T_2=\dfrac{P_2T_1}{P_1}\\\\T_2=\dfrac{105\times 320}{140}\\\\T_2=240\ K\\\\T_2=-33.15^{\circ} C$

So, the final temperature is equal to 240 K or -33.15°C.

7 0

3 years ago

PLEASE HELP!!!!!!!!!

KonstantinChe [14]

Answer:

Option "C" is the correct answer to the following question.

Explanation:

Given:

Pressure in an automobile tire (P) = 1.88 atm

Temperature (K) = 25°C = 273 + 25 = 298 Kelvin

New temperature (K1) = 37°C = 273 + 37 = 310 Kelvin

Find:

New pressure in an automobile tire (P1) = ?

Computation:

$\frac{P}{K}= \frac{P1}{K1} \\\\\frac{1.88}{298}= \frac{P1}{310}\\\\1.9557$

New pressure in an automobile tire (P1) = 1.9557

New pressure in an automobile tire (P1) = 1.96 (Approx)

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3 years ago

Write the complete balanced equation for the following reaction: Al + Fe(NO2)2 Fe + Al(NO2)3

algol13

The equation is already balanced.

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3 years ago

Thermal energy lab report

Aleonysh [2.5K]

Uhh add a picture so I can help

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3 years ago

How is a polymer like a chain of paper clips

velikii [3]

A polymer is a really long chain of smaller molecules (monomers). It's similar to a chain of paper clips because all of the little monomers will attach to each other, forming a long strain.

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3 years ago