if chart B represents the cooling of a 14.0 g of a substance at a constant rate, determine the amount of energy lost during the cooling of the liquid phase
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if chart B represents the cooling of a 14.0 g of a substance at a constant rate, determine the amount of energy lost during the cooling of the liquid phase
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- Question 29 requires no conversion- it was a mistake on my part.nHMAC%3Def41415d9158412623399163083b2ede#10001 Spr. 2021 8 Gu HI, Leira v Sign Out Item 4 I Review | Constants | Periodic Table Alexandra decides to climb Mt. Krumpett, which is 5000 m high. She determines that this will require a total of 2250 kcal of energy for the trip. For her food supply, she decides to take nutrition bars. The label states that each bar contains 50 g of carbohydrates, 10 g of fat, and 40 g of protein. Part A How many nutrition bars should Alexandra pack? Express the number of bars numerically. > View Available Hint(s) ν ΑΣφ bars Submit Previous Answers 0V 12:33Propert es Rev x E Pypor Fulkers x E Pypor Fulkers x O Mal -Fukersx Thomas, Gebri x nent/d/1gQ-IsBbucwMOGIVPUnbTx13fvoW_HIOYBH70iemw3bw/edit view #2 ☆回 Is Add-ons Help Accessibility Last edit was 2 minutes ago Courior New - - 12 + BIUA 田回- =- 三 : =-E E Properties Review #2 T-=Instructions: Select the best answer, by highlighting your chosen answer, to complete the following questions. 1. Mass divided by volume is the formula for which physical property? a. Weight b. Density which tYpe of properties include color, shape, size, and e Conductivity d. None of the above state of matter? a Physical property 6. Chemical property 3. which of the following is a chemical property of a substance? a. Densily b. Color 4. Which physical property is a size dependent property? a. Mass b. Weight 5. which physical property is a size independent property? a. Color b. Mass C. Mass d. Reacts with acid C. Volume d. AIl of the above c. Boiling point d. Both b and c
- 125Te?a Wagne, MINTEG CHEMPHYS X Playng a Game Que i quizizz comy pn/game/U2FsdGVIX1252FEzKAPoy252FXxFqQZNEN252FGHBITgOU252B2XYinpkgiq17227p04252FNDA 4Xmes0DBS1252BO123252BpaKFgo 8 63rd E 600 4/55 The mass number of an element that has 5 protons, 5 electrons, and 6 neutrons is 11 10 16 backspaceHow did you get this? k===0.693t1/20.69315 hrs0.0462 hrs−1k=0.693t1/2=0.69315 hrs=0.0462 hrs 0.693 a 102.0 nanogram(ng) sample of sodium-24 was stored in a lead-lined cabinet for 2.5 days How much sodium-24 remained? The half-life os sodium -24 is 15 hours _________ ng sodium -24 remain check_circle Expert Answer thumb_up thumb_down Step 1 Radioactive decay is a first order reaction. Conversion of days into hours: 1 day2.5 days===24 hrs2.5×2460 hrs1 day=24 hrs2.5 days=2.5×24=60 hrs Calculation of k: k===0.693t1/20.69315 hrs0.0462 hrs−1k=0.693t1/2=0.69315 hrs=0.0462 hrs-1 Step 2 Radioactive decay is a first order reaction, therefore: [A]=[Ao] e−kt[A]=[Ao] e-kt where [A] is the final amount remained at time t, [Ao] is the initial amount. Putting values: [A]====102.0 ng×e−0.0462 hrs−1×60 hrs102.0 ng×e−2.772102.0 ng×0.062546.38 ng[A]=102.0 ng×e-0.0462 hrs-1×60 hrs=102.0 ng×e-2.772=102.0 ng×0.06254=6.38 ng Thus 6.38 ng of sodium-24 remained.
- nt x A ALEKS вЬ Еxcel 20 х Yuzu Re x U Labflow x O COVID-1 x e Daily Cri x O Among 8 GivePu A www-awn.aleks.com/alekscgi/x/lsl.exe/1o_u-IgNslkr7j8P3jH-liJOkWynm4w-aQ-rw-zRhgRnayfmbBs65spECOJQ0Zacn81gbBjC9 B Blackboard O Mail - Ava Schied.. O UAConnect 9 Biology Syllabus H Labflow - Courses V Explore - HogSync ? Packback O CHEMICAL REACTIONS Identifying the limiting reactant in a drawing of a mixture The drawing below shows a mixture of molecules: key carbon hydrogen nitrogen sulfur oxygen chlorine Suppose the following chemical reaction can take place in this mixture: CS,(9)+30,(9) - CO2(9)+2 SO,(9) Of which reactant are there the most initial moles? Enter its chemical formula: Of which reactant are there the least initial moles? Enter its chemical formula: Which reactant is the limiting reactant? Enter its chemical formula: Explanation Check © 2020 McGraw-Hill Educa MacBook Pro IIE MasteringChemistry: HW 01b C Get Homework Help With Che b My Questions | bartleby > MyLab and Mastering Home - Students x X A session.masteringchemistry.com/myct/itemView?offset=next&attemptNo=1&assignmentProblemlD=139293464 E Apps W California Fool's Go... CLA Purdue OWL: APA F.. O Christmas Window... C Bianca 4-piece Fabr.. O ANGELINO o How do I format m. O Choosing Resource. New Tab Dashboard >>:58 PM Thu Sep 21 : ; 1 { ? 11 1 LTE 56% 1 Submit deleteConte X ALEK X O Rich x Ceng Bb Excel Bb What X O COVI e Daily x O Amon x e Chat N Ne www-awn.aleks.com/alekscgi/x/lsl.exe/1o_u-IgNsikr7j8P3jH-lIJOkWvnm4w-aQ-rw-zRhgRnayfmbBs65spEVIGu-K5Jx48w9eOKISqsha Click to go forward, hold to see history Apps R Blackboard 2Mail - Ava Schied. O UAConnect Biology Syllabus J Labflow - Courses O Explore - HogSync O Packback + MyN Objective Knowledge Check Question 13 Calculate the mass of glucose (C,H,,0,) that contains a trillion (1.0 x 102) oxygen atoms. Be sure your answer has a unit symbol if necessary, and round it to 2 significant digits. I Don't Know Submit O 2020 McGraw-Hill Edu MacBook DroExponential Growth A colony of bacteria contain's 10,000 organısms and grows how days, will the popu lation reach at a rate of 10 % per day. In many 25, 000 organisms. ? A = A,ektDocume x → C Netflix Thermo X Cosmet x C Laptops x M Inbox (7 X learn.canterbury.ac.uk/ultra/courses/_19016_1/outline/edit/document/_3537106_1?courseld=_19016_1&view=content WOWER Saturati x C Buy TCL X a Amazon x C Show Y X G what's X Email - X យ ☆ b The dia x 90 h * ☐ 3. Calculate AG" and AG for the isomerization of dihydroxyacetone phosphate (DHAP) to glyceraldehyde 3-phosphate (GAP). This reaction takes place in glycolysis. At equilibrium, the ratio of GAP to DHAP is 0.0475 at 25°C (298 K) and pH 7. If the initial concentration of DHAP is 2 x 10 4M, and that of GAP is 2 x 10 M would the reaction be spontaneous under these conditions? (Answer: AG" = -RTINK= 7.54 kJ/mol, AG = -3.86 kJ/mol. Therefore, the reaction is spontaneous at the given concentrations) V :SEE MORE QUESTIONS