Convert the given quantity to mass or volume if needed, divide by molar mass to obtain moles and multiply by the Avogadro constant and particle ratio.
This question is about ethene, C2H4.
The global production of ethene is about 150 million tonnes per year.
Calculate the number of molecules in 150 million tonnes of ethene.
[1 tonne =1000 kg Avogadro constant =6.02×1023 mol−1]
calculation of moles of ethene (1) - calculation of number of ethene molecules (1) Example of calculation: aligned & aligned mols = & 1.50 x 10^1428.0=5.3571 x 10^12 molecules & =5.3571 x 10^12 x 6.02 x 10^23 & =3.225 x 10^36 aligned aligned TE on moles of ethene (calculated by dividing a mass by a molar mass) Ignore SF except 1 SF ( 3.225 / 3.23 / 3.2 ) x 10^36 scores ( 2 )