ne Aspen Toblery Name _Date 03-28-24 per 8 LAB ACTIVITY: Salt Water Mixture and Percent Yield PRELAB: 1) What does percent mean? A specified ammount. Example #1: What percent of this class is 15 years old? % 2) What does yield mean? a measure of quanity of moles- Example #2: Last year, a local farmer had a yield of 90 kilograms of grapes. What if this farmer expected to grow 110 kilograms of grapes on that piece of land? Was this a good year or a bad year? How do you know? 3) What would % yield mean? Show work for calculating % yield for example #2. Example #3: What if the farmer had actually produced 120 kilograms instead? Was this a good year or bad year? Show work for expressing it in percent yield.

ne Aspen Toblery Name _Date 03-28-24 per 8 LAB ACTIVITY: Salt Water Mixture and Percent Yield PRELAB: 1) What does percent mean? A specified ammount. Example #1: What percent of this class is 15 years old? % 2) What does yield mean? a measure of quanity of moles- Example #2: Last year, a local farmer had a yield of 90 kilograms of grapes. What if this farmer expected to grow 110 kilograms of grapes on that piece of land? Was this a good year or a bad year? How do you know? 3) What would % yield mean? Show work for calculating % yield for example #2. Example #3: What if the farmer had actually produced 120 kilograms instead? Was this a good year or bad year? Show work for expressing it in percent yield.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Window Help ered: eq req Ereg Important values if needed... | b... M M 2req 2req 2req =2req M Visited MAY 11 S prod01-cnow-owl.cengagenow.com Submit Answer 85 According to the following reaction, how many moles of carbon dioxide will be formed upon the complete reaction of 32.0 grams of carbon monoxide with excess oxygen gas? 2CO(g) + O2(g) → 2CO2(g) mol carbon dioxide Retry Entire Group A 6 [Review Topics] [References] Use the References to access important values if needed for this question. Module 2 | OWLv2 MacBook Pro & 87 9 more group attempts remaining * CO € 8 A S OWLV2 | Online teaching and learning resource from C... N Previous Email Instructor Next Thu May 11 10:3 zoom □ + 0 Save and Exit + 11 bl 2 201 ngs
Each step of a four-step reaction has a percent yield of 95%. What is the percent yield of the overall reaction? please show work.
C6Н1206 602→ 6CO2 6H2O + Determine the following the number of grams of H2O produced from 270 grams of C6H1206 9, [Molar Masses (g/mole): C = 1 2; H = 1; O = 16] %D Oa. 162 grams H2O b. 27 grams H2O С. 18 grams H20 Od. 108 grams H20
ZnXqofPk5LcfGlcd5XLvhZQfZRQ8mZaOkAA5mqj9618/edit apidldentity A Classes BELL GoogleDocs DOutlook Limiting Reactants Note Sheet and Practice Problems ☆ D O Saved to Drive Help Last edit was seconds ago BIUA E E E = E 12 21 3 4 3. How many molecules of hydrogen gas will have been produced when the reaction runs out between 4.32 g of aluminum metal and 17.65 g of hydrochloric acid? How much of the excess reactant will remain unreacted? T !!! II
s Percent 3 Submitting an external tool ers or 7 of for n d n ▼ ▼ Q Search Part A L Submit Volume = Value HA Part B Potassium cyanide is a toxic substance, and the median lethal dose depends on the mass of the person or animal that ingests it. The median lethal dose of KCN for a person weighing 115 lb (52.2 kg) is 6.01x10-3 mol. What volume of a 0.0680 M KCN solution contains 6.01x10-3 mol of KCN? Express the volume to three significant figures and include the appropriate units. ▶View Available Hint(s) mol Previous Answers PRE Units hp www ? 4 X Incorrect; Try Again; 5 attempts remaining The value you reported corresponds to the volume of solution that contains 0.0680 mol of KCN. You need to find the volume of solution that contains 6.01×10-3 mol of KCN To find the volume of solution (L) containing the specified number of moles of solute, multiply the given moles by the concentration so that the units of mole cancel. p (3 EA ? Help 4 of 10 L Review | Constants| Periodic Table
1/s True or False: 2H9O 2Hg + O2 Mercury, Hg, is prepared by heating 21.7 g of HgO, according to the above reaction. If the percent yield of the reaction is 84.6 %, the actual yield of Hg will be 17.0 g. True False Check it skip SCRATCHPAD * Improve this question GET A HINT
CaCl2 + Na2CO3 ---> Given 74.3 g of CaCl2 and 5.94 x 1023 formula units of Na2CO3 , how may formula units of NaCl would be formed? If 70.5 g of NaCl is collected during lab, what is the percent yield of NaCl in the reaction? _____ x10^_____ formula units NaCl _____ % NaCl Blank 1: Blank 2: Blank 3:
KCIO3 (s) - 2 KCI (s) + 02 (g) is 2 Combustion Reactions false True The total moles of 02 react with 6 moles of * ?C2H6 are 6 moles False True 2C2H6 + 702 4CO2 + 6H2O How many * ?moles of 02 react with 6 moles of C2H6 21 22 23 20
Balance the following equation, show your work: 1. Draw your line & count your atoms 2. Start by balancing/fixing the "S", THEN balance the "O"s 3. REMEMBER: WHAT MATH DO WE USE TO BALANCE?? WHERE DO WE WRITE OUR NUMBERS?? x Clear 6 Undo A Redo S. + 8 SO 3.
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Esc STARTING AMOUNT 71°F Sunny Z²² F1 DX X F2 A- F3 F4 According to the balanced reaction below, calculate the quantity of moles of NH, gas that form when 4.20 mol of N₂H4 liquid completely reacts: 4.20 5.60 ▬▬ *- ADD FACTOR x( ) F5 17.04 1.40 g N₂ *+ O Search the web F6 3.15 3.37 x 1024 mol N₂H₁ 3 N₂H.(1)→ 4 NH.(g) + N2(g) ► / || F7 Question 9 of 11 2.53 x 1024 32.06 4 g NH, F8 12.6 g N₂H4 28.02 ANSWER 1.05 4 pity mol NH, F9 1 6.022 x 1023 8.43 x 102 3 * RESET mol N₂ 2 16.8 F10 Insert F11 F12 Delete
Constants I Because of increasing evidence of damage to the ozone layer, chlorofluorocarbon (CFC) production was banned in 1996. However, many older cars still have air conditioners that use CFC-12 (CF2 Cl2). These air conditioners are recharged from stockpiled supplies of CFC-12. Suppose that 100 million automobiles each contain 1.3 kg of CFC-12 and leak 25 % of their CFC-12 into the atmosphere Part A How much chlorine, in kg, is added to the atmosphere each year due to these air conditioners? Express your answer using two significant figures. per year. ΑΣφ mci = 19 kg/yr