Solving Q for an Unknown Gas - Warren's Homework

In summary, to solve for an unknown gas in Warren's homework, you can use the ideal gas law equation PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the gas constant, and T is the temperature. You will need to know the values of at least three of these variables. The ideal gas law equation is PV = nRT, and it describes the relationship between pressure, volume, number of moles, gas constant, and temperature for ideal gases. The gas constant (R) is a constant value with units of L*atm/mol*K, and it is used in the ideal gas law equation. To solve for an unknown gas, you will need to know
  • #1
Whalstib
119
0

Homework Statement


Unknown gas:
Solving for Q
2.5 moles
Molar heat capacity 2.00J/mol°C
∆T=20.5
P constant .995

My question is I'm used to seeing this eqn. with specific heat and grams. Since given molar heat capacity and moles does it still work?
Constant P allows me to ignore it in this type of eqn?

Homework Equations


The Attempt at a Solution



Q=(2.00J/mol°C)(2.50 mol)(20.5 °C) = 102.5 J

Thanks,

Warren
 
Last edited:
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  • #2
Your units match up, and it looks good to me.
 

FAQ: Solving Q for an Unknown Gas - Warren's Homework

How do you solve for an unknown gas in Warren's homework?

To solve for an unknown gas in Warren's homework, you will need to use the ideal gas law equation PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the gas constant, and T is the temperature. You will also need to know the values of at least three of these variables to solve for the unknown gas.

What is the ideal gas law equation?

The ideal gas law equation is PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the gas constant, and T is the temperature. This equation helps to describe the relationship between these variables for ideal gases.

What is the gas constant (R) and what are its units?

The gas constant (R) is a constant value that is used in the ideal gas law equation. Its value depends on the units used for pressure, volume, and temperature. The most commonly used value for R is 0.0821 L*atm/mol*K, with units of L*atm/mol*K.

How many variables do I need to know to solve for an unknown gas using the ideal gas law?

To solve for an unknown gas using the ideal gas law, you will need to know the values of at least three of the variables: pressure, volume, number of moles, gas constant, or temperature. If you know the values of all five variables, you can rearrange the equation to solve for the unknown gas.

What are some real-life applications of using the ideal gas law?

The ideal gas law has many real-life applications, such as determining the amount of gas needed to fill a balloon, calculating the amount of oxygen needed for scuba diving, and determining the amount of gas needed in a car's fuel tank. It is also used in industrial processes such as gas production and storage, and in the study of atmospheric gases in weather forecasting.

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