36. How many grams of gaseous boron trifluoride, BF3, are contained in a 4.341-L bulb at 788.0 K if the pressure is 1.220 atm? g BF3

Chemistry for Engineering Students
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ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter5: Gases
Section: Chapter Questions
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**Problem Statement:**

36. How many *grams* of gaseous boron trifluoride, BF₃, are contained in a 4.341-L bulb at 788.0 K if the pressure is 1.220 atm?

**Answer Box:**

[            ] g BF₃

**Explanation:**

To solve this problem, you would typically use the Ideal Gas Law, which is given by:

\[ PV = nRT \]

Where:
- \( P \) is the pressure (in atm)
- \( V \) is the volume (in liters)
- \( n \) is the number of moles of the gas
- \( R \) is the ideal gas constant (0.0821 L·atm/mol·K)
- \( T \) is the temperature (in Kelvin)

To find the mass in grams, calculate \( n \) using the above equation and then convert moles to grams using the molar mass of boron trifluoride (BF₃).

**Steps:**
1. Substitute the given values into the Ideal Gas Law to find \( n \).
2. Calculate the molar mass of BF₃.
3. Multiply the number of moles by the molar mass to get the mass in grams.
Transcribed Image Text:**Problem Statement:** 36. How many *grams* of gaseous boron trifluoride, BF₃, are contained in a 4.341-L bulb at 788.0 K if the pressure is 1.220 atm? **Answer Box:** [ ] g BF₃ **Explanation:** To solve this problem, you would typically use the Ideal Gas Law, which is given by: \[ PV = nRT \] Where: - \( P \) is the pressure (in atm) - \( V \) is the volume (in liters) - \( n \) is the number of moles of the gas - \( R \) is the ideal gas constant (0.0821 L·atm/mol·K) - \( T \) is the temperature (in Kelvin) To find the mass in grams, calculate \( n \) using the above equation and then convert moles to grams using the molar mass of boron trifluoride (BF₃). **Steps:** 1. Substitute the given values into the Ideal Gas Law to find \( n \). 2. Calculate the molar mass of BF₃. 3. Multiply the number of moles by the molar mass to get the mass in grams.
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