How many moles of helium are produced when one mole of `._(92)^(238)U` disintegrates into `._(82)^(206)Pb`?

How many moles of helium are produced when 1 mole of ._(92)U^(238) disintegrate into ._(82)Pb^(206) ?

How many moles of helium are produced when 1 mole of ._(92)U^(238) disintegrate into ._(82)Pb^(206) ?

How many alpha and beta particles are emitted when uranium ._(92)^(238)U decays to lead ._(82)^(206)Pb ?

How many alpha and beta particles are emitted when uranium ._(92)^(238)U decays to lead ._(82)^(206)Pb ?

How many alpha and beta particles are emitted when uranium ._(92)^(238)U decays to lead ._(82)^(206)Pb ?

How many alpha and beta -particles are emitted when uranium nucleus (._(92)U^(238)) decay to ._(82)Pb^(214) ?

How many alpha and beta - particles are emitted when uranium nucleus (""_(92)^(238)U) decay to ""_(82)^(214)Pb ?

How many alpha and eta - particles are emitted ,when uranium nucleus (_(92)U^(238)) decays to lead (_(82)Pb^(206)) ?

A closed vessel with rigid walls contains 1 mole of ._(92)^(238)U and 1 mole of air at 298K . Considering complete decay of ._(92)^(238)U to ._(82)^(206)Pb the ratio of the final pressure to the initial pressure of the system at 298K is