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- QUESTION 7 Waking fast can consume 50keal per minute Hor many hours of eercbe are required to consume 450 kcal, the energy in a large candy bar? OA 125 O8175he OC75 OD15 OE1 QUESTION 8 Which of the lellwing does not have a unom composition troughout? OA Compound OB Heterogeneous mature OC Homogeneous midure OD Element OE Solvent Click Save ond Sumit to save and submit. Click Sene All Ansers to pae dil anrsWhat is the kinetic energy of one mole of mercury that has a speed of 200 m/s? (M(Hg) = 0.201kg.mol-1)Due: To All change 3. In the reaction below, how many grams water is produced when 2.1 mol C6H5COOH react in excess oxygen?Balancel C6H5COOH + 02 --> CO2 + H2O 113.4g 56.7g 37.8g 226.8g PREVIOUS 3 of 6 NEXT SAVE & EXIT
- Ammonia will decompose Into nitrogen and hydrogen at high temperature. An Industrial chemist studying this reaction fills a 200. mL flask with 3.9 atm of ammonia gas, and when the mixture has come to equilibrium measures the partial pressure of hydrogen gas to be 1.2 atm. Calculate the pressure eguilibrlum constant for the decomposition of ammonia at the final temperature of the mixture. Round your answer to 2 significant digits. 3D K RELL x10 db Explanation Check 2021 McGraw-Hill Education. All Rights Reserved. Terms of Use I Privacy I Accessibility OVI R15 hp Ce esc backspace & 2$ ! 7 8. 3 4 1 y e r tab ente j k f O a 00 ||ACTIVITY: 1. Write the thermochemical equation of one mole af nitrogen gas, N; reacts with oxygen gas, 02, two moles of nitric oxide is formed. In the process, 180.5 k of heat is required. 2. Decomposition of CacO into CaOn and CO:o, AH = 178 k) Grarde-12 Chemistry ChuantersSelect ALL the TRUE statements concerning the diagram below. Energy A E Reaction Progress MacBook Pro esc ! @ # 2$ % & 1 6. 7 8. Q W E T Y tab S D F G っ K caps lock この つ エ B. A st A
- Read the given chemical reaction. C₂H6 + 0₂ CO2 + H2O How many moles of O₂ are required to react completely with 3.2 moles of C₂H6? (4 points) 3.5 moles of 0₂ 6.5 moles of 02₂ 10.4 moles of 02 → 11.2 moles of 02Question Ihe water-gas shift reaction is an important source of hydrogen. The valne of Ke for the reaction below is 5.1 at 10ou. Part 1 caluniate the equilibrnum concenrration of the four gases if the initial concentration of each of them is O•126 M. Part 2 चा०तFor each of the equations, determine the change in the number of moles of gas, Δ?gasΔngas. (NH4)2CO3(s)⟶2NH3(g)+CO2(g)+H2O(g)(NH4)2CO3(s)⟶2NH3(g)+CO2(g)+H2O(g) Δ?gas=Δngas= molmol H2(g)+Cl2(g)⟶2HCl(g)H2(g)+Cl2(g)⟶2HCl(g) Δ?gas=Δngas= molmol 2H2(g)+O2(g)⟶2H2O(l)2H2(g)+O2(g)⟶2H2O(l) Δ?gas=Δngas= molmol 2Na(s)+Cl2(g)⟶2NaCl(s)2Na(s)+Cl2(g)⟶2NaCl(s) Δ?gas=Δngas= mol
- 18 E 20 C Submit Answer $ When H₂S(g) reacts with O₂(g) to form H₂O(g) and SO₂(g), 124 kcal of energy are evolved for each mole of H₂S(g) that reacts. 4 Write a balanced equation for the reaction with an energy term in kcal as part of the equation. Use the SMALLEST INTEGER coefficients possible and put the energy term in an appropriate box. If a box is not needed, leave it blank. 999 F4 R F V + % 5 tivity.do?locator assignment-take T G Retry Entire Group 7 more group attempts remaining tv 6 B [Review Topics] [References] Use the References to access important values if needed for this question. + MacBook Air F6 Y H TAO & 7 17 N F7 U J * - 8 30 FB M ( 9 DI K H Unline teaching and le Xx 0 V F9 I + ) 0 L command PLO F10 P A. > Y 1 option + 4 Email Instructor F11 { [ ? + Previous B + = 11 I A Next> Q2 Tue Save and Exit delete * O return shift S2 SO2 (g) + O2 (g)=2 SO3 (g) AH = 144 kJ Which of the below stresses will cause the total moles of sulfur dioxide in the container to increase? Decrease container volume Increase container volume Add SO3 O Increase temperature O Add Ne O Add O2 O Decrease temperature O Add SO2The sun catalyzes the atmospheric reaction: 2 N2O(g) + O2(g) → 4 NO(g) The reaction would have a _______ △S. A) positive B) negative C) zero D) can't determine from given information Why? (pick one) A) The moles of gas increase B) The moles of gas decrease C) The moles of gas remain constant. D) The total moles of product are greater E) The total moles of reactant are greater. F) The number of moles are the same in reactants and products