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scoundrel [369]
2 years ago
13

Which pattern in electronegativity do elements in the periodic table display?

Chemistry
1 answer:
jeka57 [31]2 years ago
8 0

Answer:

Electronegativity increases from left to right within a row of the periodic table

Explanation:

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Calculate the volume of a 0.323-mol sample of a gas at 265 K and<br> 0.900 atm.
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A sample of gas (1.9 mol) is in a flask at 21 °C and 697 mm Hg. The flask is opened and more gas is added to the flask. The new
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Answer: There are now 2.07 moles of gas in the flask.

Explanation:

PV=nRT

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When more gas is added to the flask. The new pressure is 775 mm Hg and the temperature is now 26 °C, but the volume remains same.Thus again using ideal gas equation to find number of moles.

PV=nRT

P= Pressure of the gas = 775 mmHg = 1.02 atm  (760 mmHg= 1 atm)

V= Volume of gas = volume of container = 49.8 L

n = number of moles = ?

T = Temperature of the gas = 26°C=(26+273)K= 299 K   (0°C = 273 K)

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n=\frac{PV}{RT}=\frac{1.02\times 49.8}{0.0821\times 299}=2.07moles

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2 years ago
A baseball has a mass of 135 grams and a softball has a mass of 270 grams. In which of the following situations would they have
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