Question

total number of neutrons present in 54ml H2O (l) are

Answer 1

Number of neutrons in 18 ml or 1 mole = (  8 ) × NA ( hydrogen has no neutrons )

Therefore number of neutrons In 54 ml or in 3 moles = 3 × 8 = 24 NA( Avogadro number = 6.06.023 × 10^23 )

Hence no. of neutron is 24 in 54ml of water.

Answer 2

Answer: 24*Na

Explanation:

54 ml h2o = given

density of water = 1gm/ml

mass of h2o = 54*1=54gm

moles = 54/18 = 3.

3*(6.022*10^23)*8 = 24*Na.ANS