The valence of an element is the number of covalent bonds its atoms form or the charge on the ion it forms in ionic compounds. For the following questions, use the position of an element in the periodic table to deduce its valence. (1) What is the valence of nitrogen? 8 (2) What is the valence of sodium? (3) What is the valence of calcium? e

Q: 4) Which alkene reacts with CH₂OH in the presence of an acid catalyst to give CH₂ H₂C-C-0-CH₂? CH₂…

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Q: Chem 105 Online Density of Metal Stacked Metal Coins 1. Obtain the mass of 5 coins of the same…

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Q: When 2.43 g of a certain molecular compound X are dissolved in 65. g of formamide (NH₂COH), the…

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Q: Determine the oxidation state of the transition metal in each of these coordination compounds.…

A: Transition metals are also known as d-block metals . As name suggests,  coordination compounds…

Q: 5. As the strength of intermolecular forces increase, all of the following physical properties…

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Q: the skeletal structure to a complete Lewis structure with all carbon and hydrogen atoms drawn in.…

A: Given compound we have to convert it into Lewis structure

Q: The rate constant for a reaction is 1.6 × 10–2 s–1 at 684 K and 4.3 × 10–2 s–1 at 854 K. What is the…

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Q: Decide whether these proposed Lewis structures are reasonable. proposed Lewis structure HIN H-N-H…

A: According to octet rule this rule atoms with more or less than eight valence electrons tend to gain…

Q: Part 1 1.85×101 mglucose solution made by dissolving the glucose in 100.0 kg of water: Part 2…

A: Molarity (m) of a solution can be defined as the ratio of moles of the solute to the mass of solvent…

Q: se the Density interactive to place the densities of the objects from highest to lowest. lead 0 1 2…

A: Given Initial volume of graduated cylinder = 200 mL Mass of wood = 79.170 g Final volume of…

Q: A sample of CH4Br2 has a normal boiling temperature of 131.5 °C. The enthalpy of vaporization for…

A: The equation to relate heat of vapourization or heat or sublimation with a vapor pressure at two…

Q: select the most suitable indicator for the titration of 0.1 M aqueous sodium acetate 0.1M HCl. Data:…

A: Given, 0.1 M sodium acetate 0.1 M hydrochloric acid pKb=9.26 To choose the suitable indicator

Q: Q2.4 of the following indicators? following statemets which one is FALSE about a) some indicators…

A: Indicators are substances that change colour when they are added to acidic or alkaline solutions.…

Q: t Describe each highlighted bond in terms of the overlap of atomic orbitals. (If the highlighted…

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Q: Draw the product that could be formed when 1,3- butadiene reacts with methylpropionate. Ignore…

A: The Diels-Alder reaction is a chemical reaction between a conjugated diene and an alkene, resulting…

Q: 1) The product of the following reaction is: -COOCH, b) COOH KMnO,/ heat or O₂, Co(III)/CH,COOH СООН…

A: Indane, also known as benzocyclopentane consists of a cyclopentane fused to a benzene ring.

Q: Calculate the volume in liters of a 0.21M potassium permanganate solution that contains 400 mmol of…

A: The volume of potassium permanganate in liters is = 1.9 L

Q: X-rays have a wavelength small enough to image individual atoms, but are challenging to detect…

A: we have to calculate the frequency of X-rays in PHz

Q: Which two neutral atoms would have the same number of valence electrons, according to the highest…

A: Group 18 : i) The general electronic configuration nsx npy which has highest number of valence…

Q: 27 Determine if the organic substrate is oxidized or reduced in the following reaction. Select the…

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Q: The half-lives of different radioisotopes are given in the table. Half-life (min) Radioisotope…

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Q: Convert the starting compound to the final compound in 5 steps. Xx HO

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Q: 2. How are intensive properties different from extensive properties? What are other examples of…

A: Answer: Properties of the substances can be divided into two categories: 1. Extensive properties 2.…

Q: Draw the product of the reaction shown below. Use a dash or wedge bond to indicate stereochemistry…

A: The Diels–Alder reaction is the reaction between a conjugated diene and an alkene (dienophile) to…

Q: What two ionic compounds are dissolved in the filtrate after the suction filtration?…

A: This is precipitation reaction. In this reaction, CaCO3 precipitated from solution.

Q: TO McGraw Hill Campus ||| Calculate the Molar Mass of Acet X +…

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Q: Evaluate the fraction. (6.38 × 104) (5.15 × 10°) 2.51 x 108 1.31 ×10² Incorrect

A: The given structure is -->  = (6.38 x 104) x(5.15 x 106)/(2.51 x 108) = 1.31 x 103

Q: Calculate theoretical yield of the reaction

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Q: 5. In a 13C NMR spectrum of methyl fluoride where you are observing the 1H-13C coupling the methyl…

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Q: Calculate the change in E when 836g of CO2 sublimes at -78.5 C CO2 (s) -> CO2 (g) ΔH= +26 kJ

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Q: ogress An aqueous solution is made by dissolving 28.6 grams of manganese(II) bromide in 369 grams of…

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Q: 37) The most reactive towards nucleophilic acyl substitution is:

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Q: 10) The product of the following reaction is: ooooo b) H₂O OH

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Q: Which one of the following is correct?   Which of the following is correct and why A) CH3COOH is…

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Q: A chemist prepares a solution of aluminum chloride (AIC13) by measuring out 68.6 µmol of aluminum…

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Q: 5. Part A.3. Calculate the mass of KHC,H₂O4 (molar mass=204.23 g/mol) that reacts with 15 mL of the…

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Q: Draw the corresponding general mechanism of a tertiary amine with an acyl halide.

A: Usually amines reacts with acyl halide to forms amide. Primary amine reacts with acyl halide to form…

Q: Match the following enthalpy changes with the reactions below: enthalpy change of combustion,…

A: Reactions are involves formation of ethanol compound, ionization, hydration, atomisation etc.

Q: The initial volume of a gas sample is 6 L at a pressure of 723 millibar. What pressure (in bar)…

A: Given,The initial volume of  gas sample = 6 LThe initial pressure of  gas sample = 723 millibarThe…

Q: Draw the organic product of the following reaction. Click the "draw structure" button to launch the…

A: The mixture of CrO3, in dilute H2SO4 is known as Jones reagent. It is used for the direct oxidation…

Q: Calcium has a cubic closest packed structure as a solid. Assuming that calcium has an atomic radius…

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Q: Their relationship is ALWAYS spontaneous O -ΔΗ O +AH O +AS O -AS O +AG O -AG

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Q: give in detail solution (don't give handwritten

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Q: Compound X has a molar mass of 102.17 g-mol and the following composition: element mass % carbon…

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Q: At 1 atm, how much energy is required to heat 71.0 g H₂O(s) at -10.0 °C to H₂O(g) at 165.0 °C? Use…

A: Given -->  m = 71 g c = 4.184 J/g°C T1 = -10°C  T2 = 165°C  ∆T = (T2 - T1) = (165°C + 10°C) =…

Q: Help with Ochem... I need to write the stoichiometric equations for the following redox ... the…

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Q: Match the following types of mixtures: Heterogeneous, will not settle Heterogeneous, will settle…

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Q: Copper metal has a face-centered cubic structure. It has a density of 8.93 g/cm3 and an atomic…

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Q: Match each property of a liquid to what it indicates about the relative strength of the…

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