Help with 2 questions related to gasses

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SUMMARY

The discussion focuses on solving two gas-related problems involving calculations of moles and density. For the first question, the total pressure of a gas mixture in a 500ml flask at 27 degrees Celsius is given as 0.76 atm, with partial pressures of helium (He) at 0.18 atm and neon (Ne) at 0.28 atm. The number of moles of nitrogen (N2) can be calculated using Dalton's Law of Partial Pressures. The second question requires determining the density of a gas with a molar mass of 16.0 g/mol at 80 degrees Celsius and 1.5 atm, which can be solved using the Ideal Gas Law and the formula for density.

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  • Familiarity with the Ideal Gas Law (PV=nRT)
  • Knowledge of gas density calculations
  • Basic algebra for solving equations
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Homework Statement



1.) A 500ml flask at 27 degrees Celsius contains He,N2 and Ne the total Pressure is 0.76atm, while Phe= 0.18 atm and Pne= 0.28 atm. Determine the no of moles of N2 in Flask.

2.) Determine the density (g/l) of a gas with a molar mass of 16.0 g/mol at a temperature of 80 degrees Celsius and a pressure of 1.5atm.


I thank you guys for the help, please do show your work I really appreciate it.


Homework Equations





The Attempt at a Solution



I can't seem to figure out what I am doing wrong in these questions I keep getting the wrong answer every time I check my answer it appears to be wrong. Can someone please show me how it's done with the solution so I can see where my mistake was?
 
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