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Calculate the Relative molecular mass of: 1. Sodium sulphate2. Calcium nitrate3. Sulphuric acid4. Aluminium oxide5. Potassium aluminate[Atomic weights are: Na = 23,5 = 32, 0 = 16, Ca = 40, N = 14, H = 1,Al = 27, K = 39 |
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Answer» 1. Na₂SO₄= 2(23.5)+32+4(16)= 47+32+64= 143 g.2. Ca(NO₃)₂= 40+2[14+3(16)]= 40+2[14+48]= 40+2[62]= 40+124= 164 g.3. H₂SO₄= 2+32+4(16)= 34+64= 98 g4. Al₂O₃= 2(27)+3(16)= 54+48= 106 g5. KAlO₂= 39+27+2(16)= 66+32= 98 gHope this helps. |
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