Answer:
The molecules in the thermometer’s liquid spread apart
Explanation:
The required partial pressure of argon gas present in the mixture is 1.02 atm.
<h3>What is Dalton law of gas?</h3>
Dalton's law of gas states that total pressure of any mixture of gas is sum of the partial pressure of all the gases present in that mixture.
Given that,
Total pressure of mixture = 2.4 atm
Partial pressure of argon = ?
Partial pressure of oxygen = 128 mmHg = 0.168 atm
Partial pressure of helium = 167.5 mmHg = 0.220 atm
Partial pressure of neon = 760 mmHg = 1 atm
On putting all these values according to the definition we get the partial pressure of argon gas as:
Partial pressure of argon = 2.4 - (0.168 + 0.22 + 1) = 1.02 atm
Hence required partial pressure of argon gas is 1.02 atm
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Mixtures are made up of two or more substances that are not chemically combined with each other. The properties of mixtures are listed below.
The components of a mixture each keep their original properties.
The separation of components can be easily done.
The proportion of the components is variable.
The mass of oxygen in 4 moles of C2H4O2 is 128g.
<h3>How to calculate mass?</h3>
The mass of a substance can be calculated by multiplying the number of moles of the substance by its molar mass.
Molar mass of C2H4O2 = 12(2) + 1(4) + 16(2) = 60g/mol
mass of C2H4O2 = 60g/mol × 4 moles = 240grams
However, the mass of oxygen in the compound can be calculated as follows:
molar mass of oxygen/molar mass of compound × 240 grams
32g/mol ÷ 60g/mol × 240g
= 128g
Therefore, the mass of oxygen in 4 moles of C2H4O2 is 128g.
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Answer:
A because it connects with the nuclear charge