Question

the number of neutrons in 0.45g water, assuming that all the hydrogen atoms are h1 atoms and all the oxygen atoms are o16 atoms, is:

Answer 1

Answer:

so atoms in the 0.45 gram water is 0.025×6.022×10^23. so number of neutrons in it is 8 × atoms in 045 gram of water. so the answer is 1.2044×10^23 neutrons.  :)

Explanation:

Answer 2

mole of H2o = 0.45/18 =0.03 mole

1 molecule of H2o has = 0 + 8 = neutron

1 mole of H2o will have 8 mole neutron

0.03 mole of H2o will have 8×0.03 mole neutron

= 0.24×6×10^23 neutron