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aksik [14]
3 years ago
10

In chemistry, n molecules of an ideal gas have pressure (P), volume (V), and temperature (T) that stand in the following relatio

n, where R is a constant. Solve the equation for n, the number of molecules.
Mathematics
1 answer:
Rashid [163]3 years ago
4 0
Solving for n --> PV/RT=n

PV=nRT
Divide by RT on both sides to isolate n
And you get
PV/RT = n
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Step-by-step explanation:

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The sum of the page numbers on the facing pages of a book is 629. what are the page numbers
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So basically, these numbers have to be consecutive because they're facing pages.

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melisa1 [442]

Answer:

68% of these phones last 3.87 years.

Step-by-step explanation:

Exponential distribution:

The exponential probability distribution, with mean m, is described by the following equation:

f(x) = \mu e^{-\mu x}

In which \mu = \frac{1}{m} is the decay parameter.

The probability that x is lower or equal to a is given by:

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Which has the following solution:

P(X \leq x) = 1 - e^{-\mu x}

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The average lifetime of a certain new cell phone is 3.4 years.

This means that m = 3.4, \mu = \frac{1}{3.4} = 0.2941

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P(X \leq x) = 1 - e^{-0.2941x}

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This is x for which:

P(X \leq x) = 0.68

P(X \leq x) = 1 - e^{-0.2941x}

Then

0.68 = 1 - e^{-0.2941x}

e{-0.2941x} = 0.32

\ln{e{-0.2941x}} = \ln{0.32}

-0.2941x = \ln{0.32}

x = -\frac{\ln{0.32}}{0.2941}

x = 3.87

68% of these phones last 3.87 years.

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Step-by-step explanation:

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