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gtnhenbr [62]
3 years ago
11

What career field/job would utilize ppm units

Chemistry
1 answer:
Ierofanga [76]3 years ago
4 0
Jobs in analytical chem tht is because it’s parts per million and when calculating the amount of an element in a mole
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Robert has 4 grams of a substance and Jill has 10 grams of the same substance. Which of the following statements is true?
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If Robert has 4 grams of a substance and Jill has 10 grams of the same substance <span>Jill's sample will weigh more than Robert's sample.</span>
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How many grams is 10 moles of H2O?​
Elan Coil [88]

Answer:

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5 0
2 years ago
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Marianna [84]

Answer: 0.082 atm L k^-1 mole^-1

Explanation:

Given that:

Volume of gas (V) = 62.0 L

Temperature of gas (T) = 100°C

Convert 100°C to Kelvin by adding 273

(100°C + 273 = 373K)

Pressure of gas (P) = 250 kPa

[Convert pressure in kilopascal to atmospheres

101.325 kPa = 1 atm

250 kPa = 250/101.325 = 2.467 atm]

Number of moles (n) = 5.00 moles

Gas constant (R) = ?

To get the gas constant, apply the formula for ideal gas equation

pV = nRT

2.467 atm x 62.0L = 5.00 moles x R x 373K

152.954 atm•L = 1865 K•mole x R

To get the value of R, divide both sides by 1865 K•mole

152.954 atm•L / 1865 K•mole = 1865 K•mole•R / 1865 K•mole

0.082 atm•L•K^-1•mole^-1 = R

Thus, the value of gas constant is 0.082 atm L k^-1 mole^-1

3 0
3 years ago
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