Question

a. How many molecules of tetraphosphorus decaoxide are present in 2.96 moles of this compound? 1783x10^23 molecules b. How many moles of tetraphosphorus decaoxide are present in 4.03 x 10" molecules of this compound? moles

Answer 1

mole is the counting wit used to count no et particles (ataus / molecules/Icus) in a substance, It is defined as the no ct ataus present in 12 sot C-12 Isotope. Mole = 6.023x183 . a Imole of tetraphosphorus decacxide Contains 6.023x123 molecules. 23 Imole - 6.023x10 molecules 2.96 role of Puojo „ ?! no of molecules in 2.96 role of terra phosphorus de cacxide : 2.96x6.023x102 24 17.828 x 1023 1.783 x1024 present in 2.96 mole 1:183 x 10 molecules of Pyro

- Imole of P4% 6.023x10 molecules 41034 122 molecules - ?? 22 no ot moles of P4% = 4:03x10 x 6.023x1023 ) = 4.03 axlo! 6.023 = 0.066 o. @66 moles of Puol. present in 4:03X1023 molecuted at P4%