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3 years ago

2.(06.01 MC)

Chemistry

1 answer:

Pavlova-9 [17]3 years ago

4 0

Answer:

The gas A is likely to have the lowest temperature

Explanation:

In a gas, the kinetic energy is directly proportional to the temperature under constant pressure and volume.

As you can see in the problem, the average of A has a low kinetic energy. But the average is increasing between B, C and D.

As the gas A has the lowest average kinetic energy:

<h3>The gas A is likely to have the lowest temperature</h3>

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Lactose takes years to break down on its own. But if exposed to the protein lactase, the reaction proceeds very quickly, while l

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Answer:

Enzyme

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3 years ago

sample of carbon monoxide gas occupies 3.20 L at 125 °C. At what temperature will the gas occupy a volume of 1.54 L if the press

Anna [14]

Answer:

-81.5 degrees C or 191.5 K

Explanation:

We want to use Charles' gas law: V/T = V/T

Our initial volume is 3.20 L, and our initial temperature is 125 degrees C, or 125 + 273 = 398 degrees Kelvin.

Our new Volume is 1.54 L, but we don't know what the temperature is. So, we use the equation:

3.20 L / 398 K = 1.54 L / T ⇒ Solving for T, we get: T = 191.5 K

If we want this in degrees Celsius, we subtract 273: 191.5 - 273 = -81.5 degrees C

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3 years ago

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Which unit can be used to express the concentration of a solution?

exis [7]

Answer: (3) ppm

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Parts per million (ppm) is used to express the concentration when a very small quantity of solute is present in a large quantity of the solution. It is defined as the mass of solute present in one milion $(10^6)$ parts by mass of the solution.

$ppm=\frac{\text {mass of Solute}}{\text {Mass of solution}}\times 10^6$

L/s is used to express flow rate.

J/g is used to express energy per unit mass.

kPa is used to express pressure.

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Copper. thats the way copper oxidized. like the statue of liberty

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