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3 years ago

Texas is 790 miles from east to west. How many feet is that if 1 mile is equal to 5,280

Chemistry

1 answer:

Alex17521 [72]3 years ago

8 0

Answer:

$4,171,200\ ft$

Explanation:

Remember that

1 mile=5,280 feet

using proportion

convert 790 miles to feet

Let

x ---> the number of feet

$\frac{1}{5,280}\frac{mi}{ft} =\frac{790}{x}\frac{mi}{ft}\\\\x=5,280*790\\\\x=4,171,200\ ft$

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Answer:

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Explanation:

For Part A:

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Putting values in above equation, we get:

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For Part B:

To calculate the mass of helium gas, we use the equation given by ideal gas:

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P = Pressure of helium gas = 218 mmHg

V = Volume of the helium gas = 10.2 L

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Putting values in above equation, we get:

$218mmHg\times 10.2L=\frac{m}{4g/mol}\times 62.3637\text{ L.mmHg }mol^{-1}K^{-1}\times 283K\\\\m=0.504g$

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Hey there!

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