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19) A chalk contains calcium, carbon and oxygen in the ratio 15:5:10. Find the percentage of calcium |
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Answer» Step-by-step explanation:If we will add all the RATIOS .i.e.15+5+10=30then,we have to divide the TOTAL by the ratio of CALCIUM .i.e.15/30 =0.5 and for percentage multiply it by 100 = 0.5*100=50 PERCENT |
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