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Lunna [17]
2 years ago
14

A sample of oxygen, o2, occupies a volume of 0. 65 l at 11°c under 0. 50 atm of pressure. (r = 0. 08205 latm/molk). how many mol

es of o2 are present in this sample? (pv = nrt) group of answer choices
Chemistry
1 answer:
WINSTONCH [101]2 years ago
7 0

It is calculated that 0.014 moles of oxygen (O₂) are present in the given sample by using the ideal gas law.

Calculation:

Provided that :

Temperature, T = 273+11 K = 284 K

Pressure, P = 0.5 atm

Volume, V = 0.65 L

Ideal gas constant,R = 0.08205 L atm/mol K

According to the ideal gas law,

we know the formula, PV = nRT

or, n = PV / RT = (0.5 * 0.65) / (0.08205 * 284)

or, n = 0.0139 ≈ 0.014 mole

What is the ideal gas law?

  • The universal gas equation, often known as the ideal gas law, is the formula of state for a fictitious ideal gas. Although it has several restrictions, it is a decent approximation of the behavior of numerous gases under various circumstances.
  • Benoît Paul Émile Clapeyron introduced it for the first time in 1834 as a synthesis of the experimental Boyle's law, Charles' law, Avogadro's law, and Gay-Lussac's law.

Learn more about ideal gas law here:

brainly.com/question/13821925

#SPJ4

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What heat does to molecules and why
BARSIC [14]

Answer:

When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. The end result of increased molecular motion is that the object expands and takes up more space.

Explanation:

7 0
3 years ago
WILL GIVE BRAINLIEST What effect would El Niño most likely have on organisms? CHOOSE ONLY ONE A) El Niño would cause the extinct
Harrizon [31]

Answer:

it would have caused organisms to move in search of food and better conditions.

4 0
4 years ago
Read 2 more answers
Im not very good with science and i just need help with this assignment please
daser333 [38]

Answer:

Hey,

So what you would do here is first choose a biome, such as the desert for example, then choose an organism that lives there, or an animal. Then think of what it is like where it lives, is it dry, cold, windy, and so force, just describing the place by its looks and climate. How would this population increase, maybe it would be if there was suddenly more food there for them, or if their ecosystem got better for them to live, then, if they populated more, how would that affect the ecosystem. Maybe some animals would die off more, or some would have to much food. Like what if the fly population suddenly doubled, for example, how would that affect the ecosystem? Now what would happen if that organism was removed? If flies were removed, spiders and a lot of other organisms would not have food, and some organisms would overpopulate because nothing would eat them. That is just an example.

Explanation:

I hope this helps, sorry if not. Have a great day!

4 0
3 years ago
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Using the thermodynamic information in the ALEKS Data tab, calculate the boiling point of titanium tetrachloride . Round your an
ddd [48]

Answer:

The boiling point is 308.27 K (35.27°C)

Explanation:

The chemical reaction for the boiling of titanium tetrachloride is shown below:

TiCl_{4(l)} ⇒ TiCl_{4(g)}

ΔH°_{f} (TiCl_{4(l)}) = -804.2 kJ/mol

ΔH°_{f} (TiCl_{4(g)}) = -763.2 kJ/mol

Therefore,

ΔH°_{f} = ΔH°_{f} (TiCl_{4(g)}) - ΔH°_{f} (TiCl_{4(l)}) = -763.2 - (-804.2) = 41 kJ/mol = 41000 J/mol

Similarly,

s°(TiCl_{4(l)}) = 221.9 J/(mol*K)

s°(TiCl_{4(g)}) = 354.9 J/(mol*K)

Therefore,

s° = s° (TiCl_{4(g)}) - s°(TiCl_{4(l)}) = 354.9 - 221.9 = 133 J/(mol*K)

Thus, T = ΔH°_{f} /s° = [41000 J/mol]/[133 J/(mol*K)] = 308. 27 K or 35.27°C

Therefore, the boiling point of titanium tetrachloride is 308.27 K or 35.27°C.

5 0
3 years ago
How many moles are there in 6.33x10^23 molecules of NH3?
nadezda [96]
About 1.051 moles (depends on how u round it)
6 0
3 years ago
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