A chemist prepares a solution of barium chloride (BaCl₂) by measuring out 42. g of barium chloride into a 450. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's barium chloride solution. Be sure your answer has the correct number of significant digits. mol/L

A chemist prepares a solution of barium chloride (BaCl₂) by measuring out 42. g of barium chloride into a 450. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's barium chloride solution. Be sure your answer has the correct number of significant digits. mol/L

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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= e Home-Liferay X ALEKS-Alasia Fuqua - Learn F 12PM SPAN 101 Instructions to ← → C www-awu.aleks.com/alekscgi/x/Isl.exe/10_u-IgNslkr7j8P3jH-IBjuJnuCDtT6kRBabGFF3MoAkZ_UVX0N202geoxT1611PLTC X O CHEMICAL REACTIONS Identifying the limiting reactant in a drawing of a mixture The drawing below shows a mixture of molecules: Explanation carbon Check nitrogen oxygen key O hydrogen O sulfur Suppose the following chemical reaction can take place in this mixture: 2 C₂H₂(g)+50₂(g) → 4 CO₂(g) + 2 H₂O(g) chlorine 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: X 0 VHL Central | Code Acti X La
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Assessment-Chem 18-Gen (X 80 $ 54 R UCI General Chemistry Peer Tu X 65.2% Use the molar bond enthalpy data in the table to estimate the value of AHin for the equation CCI, (g) + 2 F₂ (g) →→→ CF₂(g) + 2Cl₂(g) The bonding in the molecules is shown. ΔΗ; = 888 F4 ++++ % 5 FS F-F A 6 New Tab MacBook Air ܀ T Y F6 & 7 CICI CI-CI A4 F7 * 8 ∞ Resources Average molar bond enthalpics. (Hond) kJ. mol Bond 464 C=N 142 N-H 351 N-N 502 N=N 730 N=N 347 F-F 615 811 414 439 331 276 293 615 Bond O-H 0-0 C-0 0=0 C=0 C-C C=C C=C C-H C-F C-CI C-Br C-N C=N DII FB 69 DD F9 kJ Question Source: McQuarrie, Rock, And Gallogly 4e-General Chemistry Publisher: University Science Books 1 0 ) CI-CI Br-Br H-H H-F H-CI H-Br H-S S-S 0 A F10 I' Check Answer P kJ. mol-1 890 390 159 418 945 155 243 192 435 565 431 368 364 225 3 F11 0 + Show All 411) F12 X }
Host E Chen = 11C |= 11C|| S Ancie G timel G scien G differ Dino 2 BoneG pictu + Why om/d2l/Ims/quizzing/user/attempt/quiz_start_frame_auto.d21?ou=D3336147&isprv=&drc3D0&qi=3151427&cfql=D0&dnb3D0&fromQB= ct Values shlee Garcia: Attempt 1 b. Given the mass of the asteroid to be (7.586x10^14) in grams and the diameter of the Earth (1.28x10^4) in km. Calculate the expected distribution of asteroid dust over the surface of the Earth in grams per cubic centimeter(g/cm2). Note: The your answer is assumed to be reduced to the highest power possible.(This means that everything is in scientific notation) When entering units for the answer, use the symbol for the unit, and if the unit has an exponent, enter the exponent as a carat(^). For example, grams would be "g" and, the unit grams per centimeter squared would look like, g/cm^2. %3D Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10 Answer units 330F 20 dy
/Isl.exe/lo_u-IgNSIkr7j8P3jH-IQs_dp5pR4ENzvdYC-70kXyMz36Bqhw3sVPj_jpaFLxvGArYxlbmcyqa71YYPJBG6RjdYAdGPjGhFLILID-HEX1YcqAB?1oBw7QYjlbavbSPXtx-YCjsh_7mMmrq#3 P Course Home Login | Student Veri... Bb Logout MyProgrammingLab Imported From IE ITEC2110:Summer2... TunesToTube - Upl.. Web Development.. Pub O KINETICS AND EQUILIBRIUM Using a second-order integrated rate law to find concentration c.. Consider this reaction: 2HI (g) → H, (g) +I, (g) At a certain temperature it obeys this rate law. rate = (0.118 M-s)[H] ? Suppose a vessel contains HI at a concentration of 1.48 M. Calculate the concentration of HI in the vessel 42.0 seconds later. You may assume no other reaction is important. Round your answer to 2 significant digits. x10 II
C Love Fuqua - Learn - X www-awu.aleks.com/alekscgi/x/isl.exe/10_u-IgNslkr7j8P3jH-IBjuJnuCDtT6kRBabGFF3MOAKZ_UVXON202gOiJQTdIGDtYib1Jke3qJJtY-n0BOXd4G0r80JmhB6zbOrS5108W-LPce6pq?10Bw Apple Music 0 O CHEMICAL REACTIONS, Writing the net equation for a sequence of reactions G mg to g-Google Search Explanation Propane can be turned into hydrogen by the two-step reforming process. In the first step, propane and water react to form carbon monoxide and hydrogen: CgHg(g)+3H,O(g)–3CO(g)+7H,(g) Check X In the second step, carbon monoxide and water react to form hydrogen and carbon dioxide: CO(g) + H₂O(g)→H₂(g) + CO₂(g) Write the net chemical equation for the production of hydrogen from propane and water. Be sure your equation is balanced. ローロ O M VHL Central | Dashboard X x + 3 © 2023 McGraw Hill LLC. All Rights Reserved 0 0/5 Terms of Use | Privacy Center Accessibility Feb 1
OET OTA ALEKS - Alec Nema - Learn i www-awu.aleks.com/alekscgi/x/lsl.exe/1o_u-lgNslkr7j8P3jH-MUrTNdLZhSA8CnG03PBGuXrBiCPa7ZMmym9pLH9leXKIW_JOX82_miKZzPMZCzhOvgucHISRI. O MATTER Classifying substances from a sketch Alec V ubstance shown in the sketch below. You can click the other tabs in the sketch to get a magnified view. Be sure you check all the boxes on the Classify right-hand side that are correct for this substance. Note for advanced students: in some sketches the distance between particles has been exaggerated to make it easier to see each individual particle. substance classification (check all that apply) 国 do normal 1000X 10,000,000X Ogas Oliquid Osolid Oelement Ocompound Omixture Osolution Opure substance Ohomogeneous mixture Oheterogeneous mixture
Commun x Bb Blackboard Collaborate Ultra -2 X General Psychology-Fall 20 O X A ALEKS - Griffin Barden - Learn ww-awa.aleks.com/alekscgi/x/Isl.exe/1o_u-IgNslkr7j8P3jH-JcZzdcvSCzsqTCIDqNGV3bKqhMfPmUcQ4ENkmiXn9QCwgeDPDkQ06yszYWESPcekwL0-Qg619rekU7404HgFAGBEZaDr080?1oBw7QYjibavbSPXtx-YCjsh_7mMmrq#item O THERMOCHEMISTRY Griffin V Using Hess's Law to calculate net reaction enthalpy Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. In the first step, nitrogen and hydrogen react to form ammonia: N,(g) + 3 H,(g) → 2 NH3(g) AH=-92. kJ In the second step, ammonia and oxygen react to form nitric acid and water: NH3(g) + 20,(g) HNO3(g) H,O(g) AH=-330. kJ – + Calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions. dla Round your answer to the nearest kJ. kJ
O Copy of spread ofjsla X E The Spread of Islam M Inbox (904) - aarojame x A Classes oncourseconnect.com/assessment/1651879/5287e2a3-0d0b-e2c0-c15c-3e68a37149b4 D TPSS Bookmarks CHEMISTRY BENCHMARK TEST 01 CHEMISTRY I 12-7 (AARON JAMES ID 12390724) Use the reaction equation to answer the question. Zn + Pb(NO3)2 - Pb + Zn(NO3)2 The reaction shown took place when a student placed a piece of zinc (Zn) metal in a solution of lead nitrate (Pb(NO,)2). Which statement correctly describes the oxidation and reduction that occurred in the reaction? Zn was oxidized and Pb was reduced. DPb was oxidized and O was reduced. N was oxidized and Zn was reduced. OO was oxidized and N was reduced. A Save/Exit 24 25 26 27 28 29 30 31 32 33 https://www.oncourseconnect.com/assessment/1651879/5287e2a3-0dob-e2c0-c15c-3e68a37149b4#
ton Commun x Blackboard Collaborate Ultra -2 X General Psychology-Fall 2021 A ALEKS - Griffin Barden - Learn www-awa.aleks.com/alekscgi/x/Isl.exe/1o_u-IgNslkr7j8P3jH-IJcZzdcvSCzsqTCIDqNGV3bKqhMfPmUcQ4ENkmiXn9QCwgeDPDkQ06yszYWESPcekwLO-Qg619rekU7404HgFAGbEZaDr080?1oBw7QYlbavbSPXtx-YCjsh 7mMmrq#item O THERMOCHEMISTRY Griffin V Calculating specific heat capacity A chemist carefully measures the amount of heat needed to raise the temperature of a 438.0 mg sample of a pure substance from 19.3 °C to 38.6 °C. The experiment shows that 15.6 J of heat are needed. What can the chemist report for the specific heat capacity of the substance? Round your answer to 3 significant digits. 10 J'g "K Ar
2. Using the following data, determine the Vmax and Km of the enzyme catalyzed reaction: [S] (M) 2.5 X 10-6 4.0 X 106 1 X 105 2 X 10'5 Vo (uM/min) 28 40 70 95 [S] (M) 4 X 105 1 X 10 2 X 10³ 1 X 10² Vo (uM/min) 112 128 139 140
ALEKS-Alasia Fuqua - Learn ||| www-awu.aleks.com/alekscgi/x/Isl.exe/10_u-IgNslkr7j8P3jH-IBjuJnuCDtT6kRBabGFF3MoAkZ_UVx0N202gq0GbTcR2WLHPX1Jb033xbT1iMAMuscRihtTHLJczaStvK2zINR T3W14vbTy2108w2Qv = F (SPAN-101-001) Beginning Spar X 11 O ACIDS AND BASES Predicting the relative acidity of binary acids Enter the chemical formula of a binary molecular compound of hydrogen and a Group 4A element that can reasonably be expected to be more acidic in aqueous solution than SiH, e.g. have a larger K Explanation VHL Central | Sections Check Do X O Alasia © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center Accessibility Jan 23 ? 610 dla B 7:178