90 points
During an investigation a scientist heated 2.76 g of silver carbonate till it decomposed to leave a silver residue. The total mass of the silver residue formed was 2.16 g. Does the law of conservation of mass hold true in this case? Use complete sentences to justify your answer based on numerical calculations. Mckenzie and Cara both tried to find the missing side of the right triangle. A right triangle is shown. One leg is labeled 5 and the other is labeled 13. A right angles is labeled in between the legs. Mckenzie's Work Cara's Work a2 + b2 = c2 a2 + b2 = c2 52 + 132 = c2 52 + b2 = 132 25 + 169 = c2 25 + b2 = 169 194 = c2 b2 = 144 Square root 194 equals square root c squared. Square root b squared equals square root 144. 13.93 ≈ c b ≈ 12 Is either of them correct?