Answers

2016-03-21T11:11:19+05:30
Aluminium.....Mass = moles * molar mass Mass = 4 * 27 Mass = 108 grams 27 is the atomic mass of aluminium which is provided in d ques Sodium... Same formula ll be applied Thus 4*23=92...... 23 is atomic mass of sodium.. Sulphur.......same formula 4* 32 = 128..... 32 is at. Mass of sulphur Oxygen.....same formula 4* 16 = 64...... 16 is at. Mass of oxygen
2 5 2
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