Consider the following reaction: Na2S (aq) + 2 AgNO3 (aq)…
Consider the following reaction: Na2S (aq) + 2 AgNO3 (aq) → 2 NaNO3 (aq) + Ag2S (s) A 20.00 mL (milliliters) sample of 0.260 M Na2S is reacted with 25.00 mL of 0.315 M AgNO3. Calculate the amount in grams of Ag2S produced in this reaction and provide the intermediate results as requested below. Use this molar mass for Ag2S: 247.8 g/mol Give the moles of Na2S Give the moles of AgNO3 Give the moles of Ag2S (consider the limiting reactant) Give the mass in grams of Ag2S Write all of these 4 numbers (results) in the answer box, but you also must send your work with units by email after you complete the entire exam.
Read DetailsConsider the reaction: 2Li + F2 → 2LiF A 3.00-mole sample of…
Consider the reaction: 2Li + F2 → 2LiF A 3.00-mole sample of F2 was reacted with excess lithium. If 139.6 grams of LiF was obtained, calculate the percent yield of the reaction. Use this molar mass of LiF: 25.9 g/mol Select one of the choices shown below, but you also must send your work with units by email after you complete the entire exam.
Read DetailsLet’s say there are just two countries: the United States an…
Let’s say there are just two countries: the United States and Jamaica. They are trying to decide whether or not to trade with each other. The United States has an absolute advantage in all goods. Does it still make sense for the United States to trade with Jamaica? Why or why not? To receive full credit, please reference at least one key idea or theory discussed in week 8 and write at least 3 sentences.
Read DetailsBonus: Which teaching formats worked best for your learning…
Bonus: Which teaching formats worked best for your learning (videos, homeworks, quizzes, discussion boards, real-world explanations, etc.)? Which formats did not work as well for you? Credit: 2 bonus points on this exam for an answer of at least 15 words. You will receive credit as long as you meet the word minimum. You are not penalized for negative or critical feedback.
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