Under the identical conditions of temperature, the density of a gas X is two times to that of gas Y while the molecular mass of gas Y is three times that of X. The ratio of pressure of X and Y is a:b. Then a+b is:
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Solution
According to ideal gas equation: PV=nRT Ratio of pressure, p1p2=(m1/V1)RTM1×1(m2/V2)RTM2=(d1)RTM1×1(d2)RTM2=(2d2)RTM1×1(d2)RT3M1=6:1=a:b. Now,