1.45g of an unknown gas at STP fills a 500mL flask. What is the molar mass of the gas?

Q: You can identify a metal by carefully determining its density. A 2.166 g piece of unknown metal is…

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Q: If a compound dissolves to form a ratio of two cations to one anion, which compund would this be?…

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Q: The heat of vaporization AH, of acetonitrile (CH3CN) is 29.8 kJ/mol. Calculate the change in entropy…

A: ∆Hv=29.8 kJ/mol Mass of acetonitrile = 390 g Temperature = 81.6°C=273+81.6K=354.6 K Molar mass of…

Q: Please explain step by step as I am very confused. What is the pH at the equivalence point in the…

A: Number of moles of HZ = M*V = 0.35 M* 10.0 mL = 3.5 mmol At equivalence point,   Number of moles of…

Q: 24.0 mL of 0.390 mol/L acetic acid (CH3COOH) is titrated with 0.330 mol/L KOH solution. Calculate…

A: The question is based on the titrations.  we are titrating a weak acid with a strong base. we need…

Q: 14.1 Draw the products. + 늉 heat

A: The above given reaction is an type of Diels-Alder reaction . In this type of reactions , conjugated…

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

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Q: Commercial bleaches such as Clorox are said to contain 5.25% NaOCl by weight. Is this correct? Use…

A: The following equations will be used in order to solve this problem: 1. Density The density of a…

Q: 5. Study the alcohol compounds below and answer the questions that follow. a) Draw the structure of…

A: A carbocation is an ion with a positively-charged carbon atom. Alcohols produce carbocations when…

Q: 14.3 Which of these dienes will participate in a Diels-Alder reaction?

A: The Diels-Alder reaction can be expressed as a Cyclo-addition of a diene with an alkene (usually…

Q: What is the chemical formula for the molecule represented by the skeletal structure below? = Select…

A: we have to find chemical formula of the given molecule

Q: Which of the following postulates of Dalton's atomic theory are now known to be incorrect? Select…

A: According to Dalton's atomic theory, Matter is made of atoms  All atoms of given element are…

Q: Consider the following galvanic cell: Li (s) | 0.095M LICI (aq) || 0.032M Sn(NO3)2 (aq) | Sn (s)…

A: Cell reaction :-  Li(s) l 0.095M LiCl(aq) ll 0.032M Sn(NO3)2 l Sn(s) E0cell = E0right - E0left…

Q: 3. Draw the molecular orbital diagram for the O2 2- and Br2 2+ and NO and HBr, calculate their bond…

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Q: What is the pH of 0.65 M ethanolamine, HOCH2CH2NH2, (Kb = 3.2 x 10−5)? pH =

A: The question is based on the concept of pH of the solution.  it is defined as a negative logarithm…

Q: Consider the hydrogenation of ethene to form ethane: C₂H4 (g) + H₂ (g) → C₂H6 (g). AHrxn = -137.5 kJ…

A: The spontaneity of a reaction depends on the change in Gibb's free energy. If∆G = - ve (<0), the…

Q: Question What type of functional group is represented at the top right of the molecule shown below?…

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Q: + 14.2 Draw the products. CO₂Et

A: Detail

Q: If we start with 25.0 grams of lead (II) nitrate (Pb(NO3)2 = 331.2 grams/mol) and 15.0 grams of…

A: The reactant species which is completely consumed during the reaction is called as limiting reagent.…

Q: ↑ A compound has the empirical formula N O2 and has a molecular weight of 92 g/mol. The true formula…

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Q: Given these reactions and their AG° values, COCI2(g) + 4NH3(g) → CO(NH2)2(s) + 2NH4CI(s), AG° =…

A: The required reaction : CO(NH2)2(s) + H2O(l) → CO2(g) + 2NH3(g)

Q: 2Na(s) + 2H₂O(1)→ 2NaOH(aq) + H₂(g) AH = -368 kJ Assuming no heat loss to the surroundings, will the…

A: Introduction :  Enthalpy of fusion can be defined as the change in enthalpy of a substance when a…

Q: 1) Write the abbreviated electron configuration 2) Identify if this is paramagnetic or diamagnetic…

A: The electron configuration of an atom or ion provides important information about its electronic…

Q: If a 50g sample of water at a temperature of 100°C is added to 25g sample of water at 25°C, what…

A: we have to calculate the equilibrium temperature.

Q: Standard Reduction Table Co³(aq) + 2e →→ Co²(aq) Au³(aq) + 3 e → Au(s) AgCl(s) +eAg(s) + Cl(aq)…

A: The best reducing agent among the given species. The given standard reduction potential rules are as…

Q: Calculate the pH of a solution prepared by dissolving 1.75g of sodium acetate, in 67.5 mL of 0.20M…

A: A mixture of weak acid and its conjugate ion with strong base forms an acidic buffer solution. A…

Q: Percent Yield of hydrogen gas at STP Trial 1 Trial 2

A: Mg(s) + 2HCl(aq) →MgCl2(aq) + H2(g)

Q: i) CH₂ HF ??

A: Toulene undergo electrophilic substitution reaction with propene in presence of HF to form 2-methyl…

Q: 1. Predict the product of the following reactions retro D-A A 2-butyne +

A: These are the examples of retro-Diels-Alder reactions

Q: Indicate which orbitals overlap to form the sigma bonds in each molecule. a) BeBr₂ b) HgCl₂ c) ICN

A: ICN has one single and one triple bond. In triple bond: Sigma bond forms from the overlap of a C…

Q: At 45.0 C, a 14.0 L vessel is filled with 7.25 moles of Gas A and 9.55 moles of Gas B. What is the…

A: Volume (V) = 14.0 L Temperature (T) = 45°C = (45+273) K = 318 K Number of moles of gas A (nA) = 7.25…

Q: e) Write the displayed formula for 2,3-dimethylpentane. f) Write the skeletal formula for…

A: The following rules must be followed to draw the structures of the compounds if the name is given 1.…

Q: Green Dragon Vineyards makes and sells wine in different size bottles. Decide whether each property…

A: A intensive property is a physical property which does not depend on the size or the amount of…

Q: The chemical reactivity of an element is determined by which of the following? Group of answer…

A: The chemical reactivity of an element indicates how spontaneously or vigorously that element can…

Q: A 0.04373 g sample of gas occupies 10.0 mL at 291.0 K and 1.10 atm. Upon further analysis, the…

A: Given that: Mass of the sample = 0.04373 g The volume of the sample = 10 mL Temperature = 291.0 K…

Q: A B Solubility C

A: Solution is a homogeneous mixture of two or more compounds. The compound which is in small quantity…

Q: The T = 100.00°C Tm = 0.00°C following information is given for water at 1 atm: Specific heat gas =…

A: Given: mass of water, m  = 37.50 g Specific heat of water liquid, Cl = 4.184 J/g°C  Specific heat of…

Q: Using standard reduction potentials from the ALEKS Data tab, calculate the standard reaction free…

A: It is based on redox reaction in an electrochemical cell. Here we are required to find the standard…

Q: How much heat is released when 22.75 g oxygen gas is used in the reaction? (Pay close attention to…

A: Given reaction is :  4 Fe+ 3O2 → 2 Fe2O3  .... H = -1652 kJ Weight of O2 = 22.75 g Molar mass of…

Q: Which of these electron transitions correspond to absorption of energy and which to emission? (a)…

A: Atoms has electrons on different energy levels. Each level has perticular energy , so according to…

Q: 2. A 0.158-g sample of unknown metal, X, reacted with hydrochloric acid according the following…

A: Reaction : 2 X(s) + 6HCI(aq) → 2XCI3(aq) + 3H2(g)

Q: A voltaic cell was constructed using a Cr(s)/Cr³+ (aq) half-cell anode and a Sn(s) Sn2+ (aq)…

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Q: 13. Which of the following is more paramagne [Mn(NO₂)] or [Mn(H₂O)]³+ 14. Is the reaction O₂ + 4H +…

A: Answer-14 A reaction can only be spontaneous when Gibbs free energy change for it is negative and…

Q: A rigid cylinder of gas shows a pressure of 600 torr at 215 K. The cylinder is moved to a new…

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Q: Provide a stepwise synthesis to carry out the following conversion. CH₂NH2

A: In this organic reaction several multiple steps are involved. The following steps are involved.

Q: H + + + HBr :CN: H₂

A: The question is based on the concept of chemical equilibrium. We need to identify the direction…

Q: If an element is composed of atoms with an atomic number of 8 and a mass number of 14, then an…

A: General representation of an Atom is XzA  Wher z = atomic number i.e number of electrons = number of…

Q: Arrange the following in chronological order. So, put the one by the event that happened first.…

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Q: Acetone, CH, COCH,, is a fragrant liquid that is used as a solvent for lacquers, paint removers, and…

A: Standard free energy for reaction = -1739.0 KJ/mol Standard free energy of formation of O2(g) = 0…

Q: The standard Gibbs free energy for the conversion of dinitrogen tetraoxide (N₂H4) to nitrogen…

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