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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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
Right in the same form as a question please (balancing and stoichiometry)
of Tampa - Prod - Sign B Course Content - Biological Scier x B Plant structure and growth 1- Bi X 101 Chem101 + i app.101edu.co Question 10 of 10 If 62.3 g of aspirin (C»H&O4) are produced from 79.8 g of C-H.Os, what is the percent yield from the reaction below? C-H.Os (s) + C«H&O3 (s) - CoHsO4 (s) + HC2H3O2 (aq). 2 Type here to search
Remaining Time: 1 hour, 01 minute, 47 seconds. * Question Completion Status: QUESTION 2 The number of water molecules in 2.3 mg of water is O 6.02 x 1023 O 77.0 x 1023 O 7.7 x 1023 O 7.7 x 1019 none of the above QUESTION 3 A ctudent makes a colution bu discolvina 254a ofNDOH int0 450 gof water Wh. Click Save and Submit to save and submit. Click Save All Answers to save all answer ere to search DELL
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
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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
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