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Which of the following diagrams illustrates the law of multiple proportions?
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The question asks: Which of the following diagrams illustrates the law of multiple proportions?
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To reason about the concept itself, the law of multiple proportions states that when two elements form more than one compound, the......Login to view full explanationLog in for full answers
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Question textBelow is the reaction you will be performing today: To perform the synthesis you will be using the following reagents: [table] p-aminobenzoic acid (PABA) | ethanol M = 137.14 g mol-1 | M = 47.07 g mol-1 0.80 g | 10 mL (density: 0.789 g mL-1) [/table] Calculate (to 2 significant figures): No. of moles of PABA: Answer 1 Question 4[input] mol Mass of ethanol: Answer 2 Question 4[input] grams No. of moles of ethanol: Answer 3 Question 4[input] mol Determine the molar ratio of PABA : ethanol being used today (round to the nearest integer): [table] PABA | : | ethanol Ratio = nPABA / nPABA | | Ratio = nethanol / nPABA Ratio = 1 | : | Answer 4 Question 4 [/table] Out of PABA and ethanol, which reagent will be used in excess? Multiple choice 1 Question 41. PABA2. Ethanol3. Neither is in excess – they will be used in their stoichiometric ratios
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