Chemistry

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I havent been at school for 8 days due to somthing wrong with my heart, but the teachers gave me work. I have no clue how to do them. I really need help please, There all due tomarrow.


Determine the pressure inside a televison picture tube with a volume of 3.5L that contains 2.00 x 10-5g of nitrogen gas at 22.0C?

  • Chemistry -

    Use PV = nRT
    T is in Kelvin.
    n = moles = grams/molar mass. Solve for P

  • Chemistry -

    okay so what is the R for?

  • Chemistry -

    R is a constant = 0.08206 L*atm and give pressure in atmospheres. You can change to torr or mm Hg by multiplying atm x 760.

  • Chemistry -

    I cant do it, But thank you for trying to help me,

  • Chemistry -

    n = moles N2 = 2.00 x 10^-5/28 = ??
    The PV = nRT
    P*3.5L = ??n*0.08206 x (273+22).
    Solve for P in atmospheres.

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