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Andrei [34K]
4 years ago
8

What is mathematical expression of PH scale​

Chemistry
1 answer:
allsm [11]4 years ago
6 0

Answer:

pH = -log[H₃O⁺]

Explanation:

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A sample of hydrogen gas at a pressure of 0.520 atm and a temperature of 26.2°C, occupies a volume of 15.4 liters. If the gas is
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Answer:

1.99 atm

Explanation:

Step 1:

Data obtained from the question. This include the following:

Initial pressure (P1) = 0.520 atm

Initial temperature (T1) = 26.2°C

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Final temperature (T2) = constant = 26.2°C

Final volume (V2) = 4.02L

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Step 2:

Determination of the new pressure of the gas.

Since the temperature of the gas is constant, it means the gas is obeying Boyle's law. Thus, the new pressure of the gas can be obtained by applying the Boyle's law equation as shown below:

P1V1 = P2V2

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P2 = (0.520 x 15.4) / 4.02

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4 years ago
The densities of various substances are listed in the chart. All of these substances have the same
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The object with the greatest density

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Density is the mass per unit volume of a substance;

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We can see that density is directly proportional to the mass and inversely proportional to the volume.

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So, since the volume is the same, and mass is directly proportional to density, the object having the highest density will have the greatest mass.

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