A 25 L cylinder contains 128 g of nitrogen gas at 10oC. How many grams of nitrogen must be added to increase the pressure to 5.00 atm assuming ideal gas behavior

Answer : The amount of nitrogen added must be, 22.64 grams.

Explanation :

First we have to calculate the moles of nitrogen gas.

Using ideal gas equation:

where,

P = Pressure of gas = 5.00 atm

V = Volume of gas = 25 L

n = number of moles  = ?

R = Gas constant =

T = Temperature of gas =

Putting values in above equation, we get:

Now we have to calculate the mass nitrogen gas.

Molar mass of nitrogen gas = 28 g/mol

Now we have to calculate the amount of nitrogen must be added.

Amount of nitrogen must be added = 150.64 g - 128 g

Amount of nitrogen must be added = 22.64 g

Thus, the amount of nitrogen added must be, 22.64 grams.

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

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