11th Class Chemistry States of Matter / पदार्थ की अवस्थाएँ - गैस एवं द्रव

  • question_answer 1)
    34.05 mL of phosphorous vapour weighs 0.625 g at\[546{}^\circ C\]and 1 bar pressure. What is the molar mass of phosphorous?

    Answer:

    \[PV=\frac{w}{M}RT\] \[1\times \frac{34.05}{1000}=\frac{0.0625}{M}\times 0.083\times 819\] \[M=124.77\]  


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