CHM339 S2022 Exam 3

Posttest Direction. Read the questions carefully. Write the letter of the correct answer. 1. Water exists in three states of matter and continuously moving through a cycle on Earth. At which stage in the water cycle does water transform from a gas to a liquid? a.evaporation c. precipitation b. condensation d. Sublimation 2. Carbon dioxide (CO2) forms when coal burns in the presence of oxygen. Which of the following is the BEST evidence that a chemical reaction occurs when the coal burns? a. Production of mechanical energy c. A new substance is produced b. Production of electricity d. Formation of precipitate 3.Which of these does NOT happen during a chemical change? a. New substances are formed with different chemical properties. b. Attractive force between atoms of molecule formed or break. c. The chemical properties of the substances before and after the reaction are the same d. Energy is always released or absorbed. 4. A granular substance is added to a liquid. Which of the…

Suppose that you heated the hydrated copper (II) sulphate in a test tube, instead of a beaker. How might this affect your results? 4 MAY 19 ... MacBook Pro & * %23 $ 2 3 4 5 6 7 E Y U G H J K C V M MOSISO command option command レー

2 What is reservior in environmental chemistry? What are O1D (O singlet D) and O3P( O priplet P)? Not sure if it's written in this way.

A education.wiley.com + Chapter 3 9 of 20 く - / 1 Calculate the theoretical percentage compositions for NO %N = i % %O = i NO2 %N = i %O = i

-2 -1 0 +1 +2 +3 +4 +5 +6 +7 將門路 ?? 5NO2 + 6H+ + 2MnO4 R9 555 5NO3 + 2Mn+² + 3H2O Reset Help

ter 9- CHEM A054 520 2 x Question 12 - Chapter 9 part 2 X с Chapter 9 part 2 Homework i 12 1 points ezto.mheducation.com/ext/map/index.html?_con=con&external_browser=0&launchUrl=https%253A%252F%25 8 01:46:13 eBook Hint Print References Mc Graw Hill CH6_Chem103 - Kenai Peninsu X + °C Determine the freezing point of an aqueous solution that is 0.584 m sucrose. Saved DU

4 biochemistry. Why is the answer A? can anyone please explain me this?

A large freshwater (total mass of water 10^5 kg) lake contains no lithium. A sudden spill releases a constant lithium contaminated flow discharging 3.98*10^8 mg of lithium/hr. How long will it take until the lake reaches a lithium concentration of 1.1nmol/kg?

CHCASE Dashboard Item 3 A student modek four types of land use in a city. Each model has the same amounts of soil, pebbles, and gravel. A bottle is placed under each model to represent an aquifer, as showWn. Item 4 Item 5 Item 6 Item 7 Aqulfer Aquifer Item 8 Model P Model Q Item 9 Item 1 Item Item Aquifer Aquifer Model R Model S Which model represents land use that will recharge groundwater in a city the most, and why? O Model P; it has green spaces with grass and plants. O Model Q; it has neighborhoods with large front yards. O Model R; it has buildings near paved roads and parking lots. O Model S; it has houses near large trees with deep roots.

Select A if statement A is trueSelect B if statement B is true Select C if both statement A and B are trueSelect D if neither statement A nor B are true 1. Fertilizer X is a complete fertilizer with a fertilizer grade of 25-25-25, it is the only fertilizer material needed to satisfy a recommendation of 120-50-60 kg/ha; (b) Fertilizer X (25-25-25), Fertilizer Y (0-0-62) and fertilizer z (0-50-0) are the fertilizer materials needed to satisfy a recommendation of 120-50-60 kg/ha.   2. (a) a recommendation of 80-80-80 kg/ha is satisfied with 53 kg of fertilizer X (15-15-15)/ha; (b) the same recommendation (80-80-80) is satisfied by applying 0.4 g of fertilizer X to a 15 kg soil in a clay pot. 3. (a) Lower fertilizer analysis implies higher amounts of the fertilizer material needed to be applied to satisfy a recommendation. (b) Fertilizer analysis or grade is expressed as %N-%P-%K, and is usually printed on the fertilizer container/sack/pack 4. (a) Under acidic conditions, all of the plant…

FINAL Experiment 1- January 2021_-789644623 - Saved Layout Review View Table A friend of yours went panning for gold last weekend and found a nugget that appears to be gold. With your newfound scientific prowess, you set out to determine if it is really gold. Your tests show that the nugget has a mass of 7.6 g. Immersing the nugget in water raised the volume from 7.22 mL to 8.06 mL. The density of gold is 19.32 g/cm3. What will you tell your friend? acer

A certain half-reaction has a standard reduction potential E =-1.25 V. An engineer proposes using this half-reaction at the cathode of a galvanic cell that must provide at least 0.80 V of electrical power. The cell will operate under standard conditions. Note for advanced students: assume the engineer requires this half-reaction to happen at the cathode of the cell. h Data Ag+ (aq) + e Ag (s) 0.7996 Is there a minimum standard reduction potential that the half-reaction used at the anode of this cell can have? yes, there is a minimum. Ered = v !! Al3+ (aq) + 3e-- Al (s) -1.676 Au+ (aq) + e Au (s) 1.692 If so, check the "yes" box and calculate the minimum. Round your answer to 2 decimal places. If there is no lower limit, check the "no" box. Au3+ (aq) + 3e - Au (s) 1.498 O no minimum Ba2+ (ag) + 2e - Ba (s) -2.912 Brz (1) + 2e- 2Br (aq) 1.066 Ca2+ (ag) + 2e - Ca (s) -2.868 Is there a maximum standard reduction potential that the half-reaction used at the anode of this cell can have? E=…

6. If you started with 7.25 bsh, how many bgt is equal to this?

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Home Tools Lab Experiment #... x ... +) 玩, 1 | 2 97.4% Record your observations following each reaction including changes in color and state of matter. AGNO3 (Ag*) Pb(NO3)2 (Pb²*) Ca(NO3)2 (Ca²+) а e i NazCO3 Light orange solid white, cloudy solid white, cloudy, solid (СО2) b NaOH f dark brown solid stay clear, liquid white, cloudy solid (OH) g k NazSO4 stay clear, liquid white, cloudy, solid white, cloudy, solid (SO?) d NaCl 1 white, cloudy solid white, cloudy solid stay clear, liquid (CF) .... Remember to complete and submit this table to your instructor before the end of the class session.

Concentration (mg/ml) Time (min) 8.5 0.5 6.8 5.4 1.5 4.0 2 3.2 2.5 2.5 3 What will be the slope of the line using the given first and second values? What will be the y-intercept, still using the given first and second values? Completely state the equation of the line. nlcot olN5

A certain half-reaction has a standard reduction potential E=+0.51 V. An engineer proposes using this half-reaction at the anode of a galvanic cell that must 'red provide at least 1.10 V of electrical power. The cell will operate under standard conditions. Note for advanced students: assume the engineer requires this half-reaction to happern lo Data Half-Reaction E° (V) Ag+ (aq) + e- Ag (s) 0.7996 Is there a minimum standard reduction potential that the half-reaction used at the cathode of this cell can have? = Ov Al3+ (aq) + 3e → Al (s) O yes, there is a minimum. %3D red -1.676 Au+ (aq) + e - Au (s) 1.692 If so, check the "yes" box and calculate the minimum. Round your answer to 2 decimal places. If there is no lower limit, check the "no" box. Au3+ (aq) + 3e Au (s) 1.498 O no minimum Ba2+ (aq) + 2e- + Ba (s) -2.912 Br2 (1) + 2e- - 2Br (aq) 1.066 Ca2+ (aq) + 2e + Ca (s) -2.868 Cl2 (9) + 2e - 2CI- (aq) 1.35827 Is there a maximum standard reduction potential that the half-reaction used…

Question 10 of 19 > 1A (1) 2A (2) ЗА (13) 4A (14) 5A (15) 6A (16) 7A (17) 8A (18) Answer Bank ns ns²(n – 1)ď ns?(n – 1)d ns np ns (n - 1)d ns np ns (n – 1) ns (n – 1)d' ns np ns' ns np ns np ns np ns (n – 1)d bp

Draw the major product that is expected in each of the following reactions. 1) Excess Mel 2) Ag20. H20. heat * Draw Your Solution eTextbook and Media MacBook Air 吕0 F9 F4 FS FI & * $ 4 @ # 7 8. 9. 2 3 W E Y S F G H K C V B

Question 4 is needed to answer question 5. I had provided the answers for question 4. I just struggled finding the answers for 5 and I was hoping someone would be able to explain/show the steps in writing. Thank you!

c. (- s) d. (_________3) Yoh OH Cl₂/H₂O TSCI Nal

Jollibee Burger     Item                             Sodium(mg)                Fat(g)              Calories           Item cost($) Beef Patty                               50                                17                   220                  $0.25 Bun                                         330                             9                      260                  $0.15 Cheese                                     310                              6                     70                   $0.10 Onions                                     1                                  2                     10                    $0.09 Pickles                                     260                              0                      ,. 5                   $0.03 Lettuce                                    3                                  0                      4                      $0.04 Ketchup                                   160                              0                      20…

Q29 Santa Monica Big Blue Bus operates a fleet of CNG buses, which run on compressed natural gas (CNG), natural gas that has been compressed into a much smaller volume in the fuel tank. A newly designed CNG vehicle carries about several thousand cubic feet of compressed natural gas which contain 72 kg (kilograms) of carbon. If all of the natural gas is burned, how many kilograms of carbon dioxide will be emitted into the atmosphere? Assume no residue remains and the carbon dioxide is the only product in the combustion. If you are presenting this question, please explain the following: The steps in the calculation process O Please write out the steps involved in the conversion process including the units O Please explain how to operate on the units Please explain how to manipulate the powers of ten by hand (e.g. product rule and the quotient rule) How to apply the appropriate rule to the calculation: O addition-subtraction rule ("the decimal places rule"), OR multiplication-division…

Assessment Chemistry x Copy of spread of ista X E The Spread of Islam- x oncourseconnect.com/assessment/1651879/5287e2a3-0d0b-e2c0-c15c-3e68a37149b4 N hbox (004) aarolamex Clase D TPSS Bookmarks CHEMISTRY BENCHMARK TEST 01 CHEMSTRY1IARON JAMES ID 12390724) Aluminum (Al) reacts with chlorine (Cl,) gas to form aluminum chloride. Given the position of aluminum in the periodic table, what charge should the aluminum ion have in this compound? -5 +1 +3 + (P O A O B O D Save/Exit 1 4 5 6 8 9 10 US ASUS

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100% 41 Safari File Edit View History Bookmarks Window Help Wed 4:51 PM A uk.instructure.com My Questions | bartleby Course Details University of Kentucky - CHE 111 Lab - Fall19 - FRENCH: Quiz.. Calculate the Molarity of Sodium Hydroxide? | Yahoo Answers = CHE111-017-032 > CHE111 Sections 017 to 32 (Tuesdays): General Chemistry I Laboratory (Fall 2019) Fall 2019 Home Account Announcements Dashboard Question #: 11 Syllabus Course Details An aqueous solution containing 0.3845 g of KHP (KHC;H4O4) was titrated with a solution of sodium hydroxide, producing the following titration curve. What is the concentration of the NaOH solution? Courses Modules Titration of KHP with NaOH Piazza Groups 14 Grades 12 Calendar 10 Inbox 6. Help Volume NaOH (ml) DEC 18

A catalytic converter contains between 3.00 and 7.00 g of Pt. The current price of platinumis $26.89 per ounce. What is the range in cost of Pt in one catalytic converter?

You work in a research organization that is looking for markers of various diseases that can be used as a diagnostic for the disease. It has been reported in the past that high levels of Cu are found in the sweat of people with cystic fibrosis. One of the research projects is focused on looking for high levels of Cu in samples that can be obtained non-invasively such as saliva, sweat, hair, nails, etc. The lab will analyze large samples for Cu. What instrument would you recommend purchasing to support this work, Atomic absorption spectrophotometer or an inductively coupled plasma atomic spectrophotometer? Explain the basis for your decision.

1. H30* 2. TCI pyri dine

Could someone Please Help with these! No plagiarism Please! A tire inflated with air is an example of a ___________________________. Evidence - Explanation - A pellet of sodium (Na) sliced in two pieces is an example of a _____________________________. Evidence - Explanation -

A Aa A Y F 3 States) Text Predictions: On 13 C 14 101 !!! M $ 4 ET 垣~ Paragraph What is the difference between a cylinder and a test tube? B 1.The cylinder is made of glass and the test tube is made of glass. f5 Accessibility: Good to go % 5 3.The cylinder is the same as the test tube, it's just another name for it. V 2.The cylinder contains dimensions to measure volume and the test tube is to observe reactions. f6 4.The test tube comes in a single measure (25 ml) and the test tube can come in different volumes (25- 200 ml for example). 5 A 6 P 17 Normal & 7 18 7 hp No Spacing O 19 Styles 8 Heading 1 f10 f17 .. V F12 5 فکر Ed 82°F Mos

Taking logarithms and antilogarithms is necessary to solve many chemistry problems. For practice, complete the following table, where N is a number. N ln N log N 0.603 ____ _____ _____ 1.484 _____ _____ ______ 1.336

2C. Please don't write on a paper. I can't understand handwritten.