How many grams are there in the following? i. 2 moles of hydrogen molecule, H_(2) ii. 3 moles of chlorine molecules, Cl_(2) iii. 5 moles of sulphur molecule, S_(8) iv. 4 moles of phosphorous molecules, P_(4)

How many grams are there in the following? i. 2 moles of hydrogen mol

1.	How many grams are there in the following? i. 2 moles of hydrogen molecule, H_(2) ii. 3 moles of chlorine molecules, Cl_(2) iii. 5 moles of sulphur molecule, S_(8) iv. 4 moles of phosphorous molecules, P_(4)
Answer» Solution :i. 2 moles of hydrogen MOLECULES, `H_(2)`: MASS of 1 mole of hydrogen molecule = 2G `therefore "Mass of 2 moles of hydrogen molecule"=2xx2=4g` ii. 3 moles of chlorine molecule, `Cl_(2):` Mass of 1 moles of chlorine molecule = 71 g `therefore` Mass of 3 mole of chlorine molecules `=71xx3=213g`. iii. 5 moles of sulphur molecule, `S_(8)`: Mass of 1 mole of sulphur molecule = 32g `therefore` Mass of 5 moles of sulphur molecules `=32xx5=160g.` iv. 4 moles of phosphorous molecules, `P_(4)`: Mass of 1 mole of phosphorous molecule = 30.97 g `therefore"Mass of 4 moles of phosphorous molecules "=30.97xx4=123.88g.`