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13 June, 14:05

A scientist is examining a mixture of nitrogen, hydrogen, and ammonia. The individual pressures that are exerted by nitrogen and hydrogen are 0.26 atm and 0.28 atm, respectively. If the total pressure is 0.90 atm, what is the partial pressure of ammonia?

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  1. 13 June, 15:37
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    Using Daltons Law which states that the total pressure of a gas mixture is the sum of the gasses partial pressure. Thus,

    Pt (total pressure) = P1+P2+P3

    where

    Pt = 0.90 atm

    P1 = 0.26 atm

    P2 = 0.28 atm

    P3 = ?

    substitute the formula with known variables

    P3 = 0.90 atm - (0.26atm+0.28atm)

    P3 = 0.36 atm

    The partial pressure of ammonia is 0.36 atm
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