Question

number of electron is 18ml of water (density of water 1g/ml)is ?

Answer 1

18 mL water X 1 g/mL = 18 g watermoles H2O = 18 g / 18 g/mol = 1 mole H2O
Number of H2O molecules = 1 mol X 6.02X1023molecules/mole= 6.02X1023molecules
Total electrons in 1 H2O molecule = 10 electrons/molecule So, 6.02 X 1023molecules X 10 electrons/molecule = 6.02 X 1024electrons
6.02 X 1024 electrons are present in 18mL of water.