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coldgirl [10]
3 years ago
13

Dumbledore is pleased with your progress. snape is, as always, somewhat indifferent. however, they both feel a gas phase density

problem should come next. calculate the density of helium gas at 25.0◦c and at a pressure of 1521 mmhg. express your answer in g/l.
Chemistry
1 answer:
Zarrin [17]3 years ago
8 0
Answer is: 0,327 g/l.
<span>Ideal gas law: pV = nRT.
</span><span>V - volume, the amount of space occupied by the gas.
</span><span>p - pressure ,1 atm = 760 torr = 760 mmHg.
</span><span>n - amount of substance.
</span>T - temperature, 273 K = 0°<span>C. T = 25 + 273 = 298K.
</span>R - ideal gas constant,<span> R = 0,08206 L</span>·atm/mol·K<span>.
</span>d(He) = M·p ÷ R·T.
d - density.
M - molar mass.
d(He) = 4g/mol · 2atm ÷  298K · 0,08206 L·atm/mol·K = 0,327 g/l.
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Several properties of water are shown. Classify each property as a physical property or a chemical property.
max2010maxim [7]

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is liquid at room temperature                              physical property

has a density of 1.0 g/cm³                                    physical property

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Explanation:

The physical properties of matter are the properties that occur when no change is occurring to a matter. They are usually observed with our senses or some simple laboratory experiments.

Some of the physical properties are boiling point, density, state of matter, e.t.c

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Learn more:

Chemical properties brainly.com/question/2376134

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8 0
3 years ago
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inna [77]
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5 0
2 years ago
What is the molecular formula of a compound containing 89% cesium (Cs) and 11% oxygen (O) with a molar mass = 298 g/mol?
Maurinko [17]
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CsxOy

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x=298*0.89/133=2

y=M(CsxOy)w(O)/M(O)
y=298*0.11/16=2

Cs₂O₂  cesium peroxide
6 0
2 years ago
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vredina [299]

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Explanation:

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3 years ago
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