Question

Calculate the total number of electrons in 18 ml of water

Answer 1

Dear student Here we will use the the concept of density of water = 1g/cc D=M/V 1 g/ml = M/18 ml M= 18 g moles of water = mass/molar mass = 18/18 = 1 1 mole of water contains = N_A molecules total electrons in water = 2(H) + 8(O) = 10 1 molecule of water contains = 10 electrons 1 mole water contains = 10 * N_A electrons N_A = Avogadro’s number So answer is 10 N_A