How much heat (in kilojoules!) is released when 1.0 grams of water cools from 125 to 55? (your answer should be negative to indicate heat is released!). Your Answer: Answer units

Q: A process for the production of 1,3-butadiene results from the catalytic dehydrogenation at…

A: Given :  ∆H248K =109780 J/mol And the given reaction is : C4H8 (g)→C2H6(g) + H2 (g)

Q: WRITE THE STRUCTURAL FORMULA OF THE FOLLOWING: (NOT SKELETAL FORMULA) 5- Ethyldecane 2-…

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Q: (a) 174Hf→ 170yb + ? chemPad XX→ b) 60 Co→ 60 Ni+? chemPad XoXº ↓ Help Greek Help Greek

A: a)  H174f→Y170b + H24e b)  C60o→N60i + e-10 c) B210i→P210o + e-10 d)  P239u→U235 + H24e

Q: determine molarity: 2.456 g of Al2(SO4)3 in 1250 mL of solution?

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Q: which of the following is highest priority function group  C=C OH NH2 C=C

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Q: turnover number of an enzyme related to Vmax cal mechanics

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Q: The lattice energy of KCI is -690. kJ/mol, and the enthalpy of hydration is -707 kJ/mol. (Recall…

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Q: B: Explain the classification of metals according to those factors. a: Compositions, b: Content of…

A: Metal : Metal is any of a group of substances with strong thermal and electrical conductivity,…

Q: Marie Curie was a Polish scientist that specialized in chemistry and physics. She wanted to…

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Q: Which phase change is an endothermic process? a) evaporation O b) deposition Oc) freezing

A: The energy difference between the products and reactants is known as the energy change of a…

Q: Consider the reaction described by the equation The rate law is C₂H, Br, (aq) +31(aq) C₂H₂(g) + 2 Br…

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Q: 1. Relate intermolecular forces with; A. surface tension B. viscosity C. vapor pressure

A: Since you have asked multiple questions, we will answer only first question for you.  In order to…

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A: Option b is correct

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Q: The values of the rate constant for the reaction 2 N₂O5(g) - 4 NO2(g) + O2(g) were determined at…

A: Concept based on the activation energy.

Q: 1. SYNTHESIS (Marriage) - Elements will combine EXAMPLE: A B Mg (mono) Cl (di) Cl₂ Mg ANSWER: MgCl₂…

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Q: # 65 of 214 A2 equivalence 25.00 mL of a solution containing 0.1333 M ammonia (K = 1.76 x 10-5) is…

A: Concept based on buffer solutions.

Q: Which would melt first, germanium with a melting point of 1210 K or gold with a melting point of…

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Q: 10. Use the data: AGº (CO) = -137.2 kJ, AGº (C) = 0 kJ, AGº (O₂) = 0 kJ, to find K at 298 K for the…

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Q: hsidering structures below, which of the following statements is true? 유 1 H-C-O-CH₂2 CH₂OH ||…

A: we have to identify the correct statement with respect to the given structures

Q: ● Analyse the mechanism of 2-methylpropene + HCI* (How does it happen? What are the steps involved?)

A: Alkenes are the organic compounds that contain double bonds between carbon atoms in a compound.

Q: Connected to DESKTOP-VKHKVG3 1.0 m C₂H₁₂O Disconnect X Which one of the following aqueous solutions…

A: Freezing point is the temperature at which a substance start converting from solid to liquid form.

Q: Which of the following aqueous solutions would have the highest boiling point? 1.0 m NaNO, 1.0 m…

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Q: How many kilocalories are present if 81J are produced?

A: Given the energy produced in J = 81 J We have to convert 81 J to kilocalories (kcal). First, we have…

Q: A urine sample has a mass of 145 g and a density of 1.010 g/mL. What is the volume of this sample?

A: Given,  The mass of urine sample = 145 g.  The density of the sample = 1.010 g/mL. The volume of…

Q: The reaction between carbon monoxide and hydrogen gas is given below: CO(g) + 3 H₂(g) → CH4(g) +…

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Q: Select the compound with the higher boiling point. HF or HCL

A: Boiling point: The temperature at which the vapor pressure of a liquid becomes equal to the…

Q: A rigid vessel is filled to one-half its volume with liquid methane at its normal boiling point (111…

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Q: b Success Confirmation of Questio X C Circle every active position and i = с ONDERRIGTOETS 1…

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Q: What mass of hydrogen gas was produced?   What mass of zinc reacted?   What was the percentage of…

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Q: 5. Find x if x² (0.0010-x) 1.8 x 10-4

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Q: 1. Determine the kinds of intermolecular forces that are present in the compound CH₂OH. a)…

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Q: When 30 g KCl and 30 g of CaCl2 added to 50 dL of DI water, find the molar concentration of Cl-.and…

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Q: 1. A weak acid HA is 0.20 % ionized in a 0.04 M solution. What is the acid-ionization constant of…

A: The acid ionization constant(Ka) represents the fraction of the acid that has been ionized in the…

Q: For the following scales (no units), determine the size of the increment, and then estimate the…

A: The scale increment is the quantity between any two adjacent graduations. To find the scale…

Q: An alcoholic beverage with a density of 1.046 g/mL has an ethanol (C2H5OH, FM 46.068)  concentration…

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Q: WRITE THE STRUCTURAL FORMULA OF THE FOLLOWING: (NOT SKELETAL FORMULA) 1. 3,6-Dimethyldecane 2. 4…

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Q: Look at the image below of the data collected by a student. What is the independent variable?…

A: If x=y2 + cthen the value of x is dependent on value of y.x is said to be dependent variable and y…

Q: Which of the following is a set of constitutional isomers? Į I Br II, III, and IV O II and III O I,…

A: We have to find the compounds that represent a set of constitutional isomers.

Q: The oxidation of ammonia is a reversible exothermic reaction that proceeds as follows: 4 NH3(g) +5…

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Q: g) h) + I H CH3OH -OK -OH

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Q: How many significant figures would this calculation have if it were completed: (9.04-8.23 +21.954…

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Q: a) b) c) d) e) 1) g) h) i) D k) 1) n) MeO it with Jul 8.0 MeO 1.00 8.0 1 L 7.8 I 7.8 ľ K FAK 1 7.6…

A: 1HNMR Spectra given above have signals between 6 to 8 ppm taht is aromatic region .therefore, by…

Q: Fe(NO3)3.9H₂0 + Bi(NO3)3.5H₂O + HNO3 (dil) iron nitrate nonahydrate A + C4H606 Tartaric acid bismuth…

A: The given series of reactions are the method of synthesis of homogenous solution of polymeric…

Q: 0.5Ν2 (NH3 (g) H2 (g) (g) + 1.5H2 (g) +1.2502 (g) + 0.502 (g) NH3 (g) · NO (g) H2O (1) ΔΗ1° + 1.5H2O…

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Q: d) Outline a Wittig synthesis of 3-methylhex-3-ene. f) Show all the steps in the synthesis of…

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