The entropy of a sample of CO2 increases as the CO2 changes from
2 answers:
Answer: Option (4) is the correct answer.
Explanation:
Entropy is defined as the degree of randomness. That is, when particles of an object or matter are rapidly moving from one place to another then it means that the object has high entropy.
For example, gases have high entropy than liquids and solids.
Whereas when particles of an object are closer to each other then it means that entropy of the object is low. For example, solids have low entropy.
Thus, we can conclude that the entropy of a sample of increases as the
changes from solid to gas.
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Answer:
49.2 g/mol
Explanation:
Let's first take account of what we have and convert them into the correct units.
Volume= 236 mL x () = .236 L
Pressure= 740 mm Hg x ()= 0.97 atm
Temperature= 22C + 273= 295 K
mass= 0.443 g
Molar mass is in grams per mole, or MM= or MM=
. They're all the same.
We have mass (0.443 g) we just need moles. We can find moles with the ideal gas constant PV=nRT. We want to solve for n, so we'll rearrange it to be
n=, where R (constant)= 0.082 L atm mol-1 K-1
Let's plug in what we know.
n=
n= 0.009 mol
Let's look back at MM= and plug in what we know.
MM=
MM= 49.2 g/mol