1. How many moles of air are there in a flask with a volume of 125 mL if the pressure is 745 mm Hg and the temperature is 22°C? 2. What is the density of carbon monoxide gas at 127ºC and 763 mm Hg?

Q: Classify each chemical compound: compound HC1 SeS₂ NiC1₂ type of compound Oionic O ionic O ionic O…

A: we have to classify the given compounds and ionic or molecular

Q: 1. Name the following oxygen containing organic compounds using the IUPAC naming system.OBSERVE…

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Q: Use the References to access important values if needed for this question. The equilibrium constant,…

A: we need to calculate moles of HI at equilibrium

Q: According to the following reaction, how many grams of oxygen gas are required for the complete…

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Q: Given the following thermochemical equations: H2 (g) + F2 (g) → 2HF (g) ΔH = -537 kJ C (s) + 2F2 (g)…

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Q: Gaseous ethane CH3CH3 reacts with gaseous oxygen gas O2 to produce gaseous carbon dioxide CO2 and…

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Q: Complete combustion of 1 mole of acetone, C3H6O, releases 1790 kJ of heat: C3H6O (l) + 4O2 (g) →…

A: Given, C3H6O (l) + 4O2 (g) → 3CO2 (g) + 3H2O (l) ΔH° = -1790 kJ Enthalpy of formation of acetone…

Q: [Review Topics] [References] Use the References to access important values if needed for this…

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Q: How many grams of copper (II) fluoride are needed to prepare 684 mL of a 2.15 M solution?

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Q: A student ran the following reaction in the laboratory at 303 K: 2NO(g) + Br2(g) 2NOBr(g) When she…

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Q: Consider the reaction: PCls (g) + Cl₂ (9) PCls (g) Write the equilibrium constant for this reaction…

A: Some of the important characteristic of equilibrium constant are If the equilibrium reaction is…

Q: How many moles of nitrogen, N, are in 67.0 g of nitrous oxide, N2O? Express your answer with the…

A: Moles : Mole is an unit of amount ofsubstance for measuring large quantities of very small entities…

Q: The overall chemical reaction after combining the 4 chemical reactions mentioned in your procedure…

A: From balanced chemical reactions Two mole of aluminium produced two mole of alum

Q: A chemist prepares a solution of sodium bromide   NaBr    by measuring out  0.25g  of  NaBr  into…

A: Given :-  Mass of NaBr = 0.25 g  Volume of solution = 50. mL  To calculate :-  Molarity of Br- ions

Q: Which of the following will react with Tollen's reagent? O 요 CH₂CH OH CH₂ C CH3 CH3 OCH3CH₂OCH₂CH3 i…

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Q: 2. Each of the following salts can be prepared from an acid and a base. Write the balanced molecular…

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Q: At 250°C and 1 bar, phosphorus pentachloride PCl5 partially decomposes to phosphorus trichloride…

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Q: Benzoic acid is used to determine the heat capacity of bomb calorimeters because it can be obtained…

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Q: The pH at the first equivalence point of the titration curve of a weak diprotic acid such as…

A: 9) This is the titration between a weak diprotic acid(phenylalanine) and a base. pka1 i.e. 1st…

Q: 18. Predict the product of each of the following reactions, showing stereochemistry if appropriate.…

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Q: Which of the following elements does not have an allotrope that is mainly covalent in nature? a.…

A: Allotropy is the property of chemical elements to exist in two or more different forms. In the given…

Q: The equilibrium constant, Ke, for the following reaction is 1.80 x 104 at 298 K. NH4 HS(s) NH3 (9) +…

A: Kc is the ratio of  product of concentration of products raised to their stoichiometric coefficient…

Q: Draw the Lewis Structure of OCl2 Molecular Geometry? Ideal Bond Angles? Are there Polar Bonds…

A: Concept based on the Lewis structure, geometry of the molecule, Bond angle of the given molecule,…

Q: 3. Using your orbital diagrams, briefly explain why Se²-, Sn4+, and Sn²+ are common ions for Se and…

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Q: Complete the following calculations. Mass calculations Mass of watch glass and evaporating dish:…

A: Mass of watch glass and evaporating dish:   62.254 g   Mass of watch glass, evaporating dish, and Mg…

Q: ability) the IR-active Simulate the IR data for the given structure by drawing (to the best of your…

A: The given molecule is:

Q: A solution contains one or more of the following ions: Ag+, Ca²+, and Co²+. Lithium bromide is added…

A: Given the solution doesn't form any precipitate with the bromide ion(Br-), but forms a precipitate…

Q: Is each molecule a Lewis acid, bronstead acid, or both?

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Q: How many pi bonds are present in the molecule below: 15| ΑΣΦ ?

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Q: Aqueous silver nitrate reacts with aqueous nickel (II) chloride to produce solid silver chloride and…

A: According to the Law of conservation of mass " all atoms of different elements must be equal on both…

Q: Complete and balance the following redox reaction in basic solution. Be sure to include the proper…

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Q: 4. Which of the following is both a Bronsted base and Arrhenius base (a) Na₂CO3 (b) NH3 (c) CSOH (d)…

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Q: CHS +37 CH3 C413 CHS

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Q: Part B According to VSEPR theory, if there are 5 electron domains in the valence shell of an atom,…

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Q: 4. Suppose you want to make a 2.5 M solution of MgF2 (magnesium fluoride). If you have 14.08 g of…

A: Molarity of a solution is defined as the no. of moles of solute present in one litre of solution.

Q: Click the "draw structure" button to launch the drawing utility. Using a line formula, draw the…

A: The line structure also known as line formula.  This convention is used to draw structures of…

Q: Draw the major product from this reaction. Use wedge and dash bonds to indicate relative…

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Q: Which one of the following salts, when added to water, would decrease the pH? O CSCN O LICH3COO O…

A: Answer:- This question is answered by using the simple concept of dissolution of salt in water and…

Q: 63.45 mL of 0.250 M Ba(OH)2 reacts with 0.750 M HNO3 and reaches the endpoint using phenolphthalein…

A: Here we are required to find the volume of nitric acid required for this reaction.

Q: If you were making a stock solution of 0.200 M cobalt (II) chloride hexahydrate, what mass of cobalt…

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Q: Using the numbers above the dot structures, click the numbers of the correct dot structures only.…

A: A dot structure is a representation of the valence electrons of an atom that uses dots around the…

Q: The difference between heterogeneous and homogeneous mixtures is the degree to which the materials…

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Q: The tungsten metal used for filaments in light bulbs is made by reaction of tungsten(VI) oxide with…

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Q: At 298K, the equilibrium constant for the following reaction is 1.70x10-²: H₂SO3(aq) + H₂0 H30+ (aq)…

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Q: Draw the Lewis Structure of CH3OH Molecular Geometry? Ideal Bond Angles? Are there…

A: Here we have to write the Lewis structure of CH3OH  , the molecular geometry,  bond angle, polar…

Q: 1. Classify the following if either Aromatic or Not aromatic a. a b. + d. e. ZI H₂

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Q: Determine the energy in one mole of cobalt-60 as it decays into nickel-60 during cancer radiotherapy…

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Q: -X-X-X- Linear Homopolymer Branched Homopolymer Cross linked Homopolymer -X-Y-X- Linear Copolymer…

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Q: What reagents can you add to adrenaline to make its alcohol group a good leaving group? Show the…

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Q: A sample of solld ammonlum chloride was placed in an evacuated chamber, and then heated causing it…

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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.