Al(s) + O2(g) -> Al2O3(s) When balanced, what is the coefficient in front of O2?

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Q: 19. What reagent(s) needs to be added to complete the following reaction A) NaNO2, H₂O B) NaCl C)…

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Q: D) 12. Which of the following Newman Projections is the enantiomer to the molecule below B) НО HO H…

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Q: sample A B U D symbol 11 6 131 53 C 227 radionuclide I 89 170 69 Ac Tm half-life 20. minutes 8.0…

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Q: Draw the major product of the aldol addition reaction between two of these aldehydes with the…

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Q: 7. What is the major organic product obtained from the following reaction? 1/20₂ SH

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Q: The following galvanic cell has a potential of 1.214 V at 25 °C: Hg(1)|Hg₂Br₂ (s)|Br (0.10 M)||MnO4…

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Q: 4.35. Derive equations 4.35-4.37. (27), - -(²), = as (2) - (1) as (,), - -( ), = ᎧᎢ (4.35) (4.36)…

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Q: The ?sp of scandium fluoride, ScF3, is .5.81×10−24. Calculate the molar solubility, ?, of this…

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Q: 5. In the preparation of polyurethane, what causes the solution to foam and expand in volume?

A: In the preparation of polyurethane, the isocyanate is allowed to react with a polyol.

Q: (A) H | CH3CH₂CH₂-C-CO₂CH3 1 CH₂CH3

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Q: 11. How many structural isomers are there for CH-CI? A) 2 3 6 5

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Q: What are the environmental impacts of fracking

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Q: Identify each transition in this flowchart as a chemical change or a physical change. 8 8 88.…

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Q: Hypothetically, if you were assigned lead(II) hydroxide as your unknown, calculate the expected…

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Q: Hess's Law and the Enthalpy of Combustion of Magnesium Magnesium ribbon burns in air in a highly…

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Q: An empty steel container is filled with 2.40 atm of H₂ and 2.40 atm of F2. The system is allowed to…

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Q: A sample of pure lithium nitrate contains 10.1% lithium by mass. What is the % lithium by mass in a…

A: Lithium nitrate contains 10.1% lithium by mass.

Q: H— HIN+ :O: :CI: S-CI:

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Q: 28. Which isomer descriptions are NOT used when describing coordination of transition metal…

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Q: 30. Calculate the approximate weight (ing) of KMnOs required to make 500 ml of 0.0200M KM 07 (MW.…

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Q: The pH of a 0.75M solution of 3-hydroxypropanoic acid (HC₂H5O₂) is measured to be 2.32. Calculate…

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Q: H H 8. Consider the molecule below. Determine the hybridization at each of the 2 labeled carbons. CI…

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Q: For the reaction of carbon monoxide and hydrogen, the equilibrium concentrations are 3.26 M CO and…

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Q: Predict the product of the following reaction. OH PBT3

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Q: Calculate the standard cell potential (E∘�∘) for the reaction…

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Q: D) 20. What starting reagent would yield the following product? A) B) C) NaCl

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Q: 5. Calculate the standard enthalpy of formation (in kJ mol) for cyclopentane gas, CsH10(g), using…

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.