Avogadro's constant/number is 6.022 Ă— 10^23 molecules for every 1 mole of substance.
And reaction produces 0.875 moles of h2o.
So,
Number of molecules produced = Avagardo's number x Number of moles of h2o produced.
Number of molecules produced = (6.022 Ă— 10^23) x (0.875)
Number of molecules produced =5.26925 Ă—10^23 molecules.
