A gas X diffuses twice as fast as gas Y. if the relative molecular mass of X is 32, calculate the relative molecular mass of Y.

  • A 128
  • B 8
  • C 16
  • D 64
jamb 2014chemistry

The correct answer is A. 128

\(\frac{RY}{RX}\) = \(\frac{\sqrt{My}}{\sqrt{My}}\) 1/2 = \(\frac{\sqrt{32}}{\sqrt{y}}\) \(\frac{32}{y}\) = 1/4

Y = \(\frac{32x4}{1}\) = 128

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