Question

From 150 g of urea (NH2CONH2) when 3 x 1023
molecules are removed then the remaining moles of
urea will be
1 mole
2 mole
0.5 mole
1.5 mole​

Answer 1

0.5 moles will be the correct since half of Avogadro's no. is removed from the urea.No.of moles=no. of molecules/Avogadro's no.