Answer: Methane
Explanation: I just took the AP€X quiz and Methane was the correct answer!
The tension in the rope B is determined as 10.9 N.
<h3>Vertical angle of cable B</h3>
tanθ = (6 - 4)/(5 - 0)
tan θ = (2)/(5)
tan θ = 0.4
θ = arc tan(0.4) = 21.8 ⁰
<h3>Angle between B and C</h3>
θ = 21.8 ⁰ + 21.8 ⁰ = 43.6⁰
Apply cosine rule to determine the tension in rope B;
A² = B² + C² - 2BC(cos A)
B = C
A² = B² + B² - (2B²)(cos A)
A² = 2B² - 2B²(cos 43.6)
A² = 0.55B²
B² = A²/0.55
B² = 65.3/0.55
B² = 118.73
B = √(118.73)
B = 10.9 N
Thus, the tension in the rope B is determined as 10.9 N.
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Answer: Partial pressure of nitrogen and xenon are 288mmHg and 548 mmHg respectively.
Explanation:
The partial pressure of a gas is given by Raoult's law, which is:

where,
= partial pressure of substance A
= total pressure
= mole fraction of substance A
We are given:


Mole fraction of a substance is given by:

And,

Mole fraction of nitrogen is given as:

Molar mass of
= 28 g/mol
Molar mass of
= g/mol
Putting values in above equation, we get:


To calculate the mole fraction of xenon, we use the equation:



Thus partial pressure of nitrogen and xenon are 288mmHg and 548 mmHg respectively.
A population. The same organism, example cheetah's, all living in one spot with no other organism included is a population.