CHEMISTRY MIDDLE SCHOOL

1.00 L of gas at a standard temperature and pressure is compressed to 473mL. What is the new pressure of the gas?

Answers

Answer 1
Answer:

Answer:

The pressure of the gas is 2.11 atm.

Explanation:

From the given,

V_(1)=1.00\,L

P_(1)=1\,atm

P_(2)=?

V_(2)=473\,ml=0.473\,L

P_(1)V_(1)=P_(2)V_(2)

(1)(1)=(0.473)(P_(2))

P_(2)=((1)(1))/(0.473)=2.11

Therefore, The pressure of the gas is 2.11 atm.
Answer 2
Answer:

Final answer:

Boyle's law is used to find the new pressure after the gas is compressed from 1.00 L to 0.473 L. The original pressure is 1 atm at Standard Temperature and Pressure (STP). After the compression, the new pressure is approximately 2.12 atm.

Explanation:

The question relates to gas laws, specifically Boyle's law, which states that the pressure of a gas is inversely proportional to its volume when the temperature and amount of gas are held constant. At Standard Temperature and Pressure (STP; 273.15 K and 1 atm), one mole of an ideal gas occupancies a volume of about 22.4 L. In this case, the initial conditions are at STP, with a gas volume of 1.00 L, equating to a pressure of 1 atm. When this volume is compressed to 473 mL (or 0.473 L), the pressure can be determined using Boyle's law, i.e., P1V1 = P2V2. After substituting the values, we can solve for the new pressure (P2) which will be approximately 2.12 atm.

Learn more about Boyle's Law here:

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The density of a cork is 0.24 what is the volume of a 240 piece of cork?

Answers

To find the volume of a 240-piece of cork, we need to know the mass or total weight of the cork. The given information only states the density of the cork, which is 0.24, but it does not provide the mass directly.

Density (ρ) is defined as the mass (m) of an object divided by its volume (V):

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Learn more about the volume from the link given below.

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I am going to assume that the volume 0.24 is in g/ml and that its mass 240 is in milligrams.
You first need to convert the milligrams into grams so that the units for mass and density both have grams in them. 240mg equals .240g

you have to divide its mass by the density to get volume.  (.240 g)/(0.24 g/ml)=1ml
I hope this helps.

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Answers

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