cal was 69.8°C. c heat of the unknown

Q: 3.75 dm3 of distilled water are added to 250.0 cm3 of 3.20 mol dm–3 sodium hydroxide solution. What…

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A: The volume of a certain liquid varies with temperature as V=V'{0.75 +3.9 x10-4 (T/K) +1.48 x10-6…

Q: 3. Explain why it is important to wash the precipitate. Can distilled water be used to wash all…

A: Some amount of the electrolytes is mixed to form the precipitate which remain adsorbed on the…

Q: 2.6 g of vegetable tissue was analyzed and it was found that it contains 3.6 mg of zinc. What is the…

A: Given,  The mass of vegitable tissue = 2.6 g.    The mass of zinc = 3.6 mg.  The concentration of…

Q: Enthalpy of combustion of the reaction CH, (g)+0,(g) → CO, (g)+H,0(g) is -890 kJ/mol. Calculate the…

A: Given-> CH4(g) + O2(g)--->CO2(g) + H2O(g) ∆H°c= -890 KJ/mol Weight of CH4 = 25.0 gm

Q: Which of the following reagent best accomplish this transformation below? a. BH3, THF, H2O2 b.…

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Q: 106. A chemist carries out this reaction, beginning with 2.10 grams of NaBr and 3.25 grams of…

A: Given, Mass of NaBr = 2.10 g Mass of Pb(NO3)2 = 3.25 g Equation is :  2NaBr (aq) + Pb(NO3)2 (aq)…

Q: || H3C OCH2CH3 CH30 OCH3 нн 9H3C CH3 CH3

A: Rule of naming: 1. Find and name the longest continuous carbon chain. 2. Identify and name groups…

Q: Select all intermolecular forces for CH,Br2 H-bond O LDF O dipole-dipole

A: dipole-dipole forces - a forces of attraction between polar molecules (negative and positive charges…

Q: CH;CH,CH2C=C-H ... A Н—С—с— Н and NaNHz, NH3, СH,CH,CH,Br B Н—С—С—H and NaNHz, NHз, CH,СH2CH-CH,Br…

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Q: What types of forces exist between 12 molecules? O hydrogen bonding dipole-dipole forces ion-dipole…

A: In I2 the vander waals dispersions forces exist .that is this is dipole-diploe forces

Q: Exercises: 1. How to determine the factor of reducing agent and oxidizing agent: a. Fe b. HNO3 FeCl3…

A: The oxidizing agent is a substance that causes oxidation by accepting electrons; therefore, its…

Q: PCl3 (s) + H2O(1) → POC13 (1) + 2HC1(ag) When 81.52 g of phosphorus pentachloride reacts with excess…

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Q: Identify the correct product in the following reaction. H,SO4 H2O Answer Choices: ОН (A) ОН (B) OH…

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Q: For the following reactions at equilibrium, identify which between the reactants and products is…

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Q: Vinegar is reacted with tums, where tums become the limiting reactant. When pressure and temperature…

A: The volume of gas produced will depend on the moles of limiting reagent For each tablet volume of…

Q: 2. The rate constant for the first-order reaction: SO,Cl,(g) = SO2(lg) + Cl2(g) is 2.2 x 10-5 s -1.…

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Q: What is the percentage weight of the chloride ions in trial 1? What is the percentage weight of the…

A: Analysis of a sample

Q: 3) A solution of silver nitrate (AgNO3) and then prepared by dissolving 1.26 g of salt in a…

A: Given: Mass of AgNO3 = 1.26 g Volume of solution = 250 mL Molar mass of AgNO3 = 169.9 g/mol

Q: CH3 CH2 CECCH2 CH3+ H20 ?

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Q: 1. The reaction He) + Ize) « 2HI) goes to equilibrium. The Kc is 0.00034. If the initial…

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Q: I. Identify the compounds (reactants or products) corresponding to each letter. If there are several…

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Q: What is the normality of 50.0 ml Ba(OH), solution when titrated with 23.50 mL of o.250 N HCl?

A: Volume of HCl (acid) = 23.50 ml  Normality of HCl (acid) = 0.250 N  Volume of Ba(OH)2 (base) = 50.0…

Q: What are the different shampoo ingredients and its desciption? you may also cite an example of it.

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Q: The decomposition of nitrogen dioxide: 2NO2(g) = 2NO(g) + O2(g) has a rate constant of 0.498 3. M/s…

A: The activation energy of the reaction can be calculated from the Arrhenius equation: Where, Ea =…

Q: Find the concentration of a solution with a transmittance of 0.27 AU and molar absorptivity of 3.65…

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Q: Identify the functional groups present in the compound below: CI Но. ОН

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Q: 5. Which nutrient group is used in the composition of waxes and responsible for insulation of some…

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Q: (c) Propose a synthesis of C from D and any other reagents of your choice. Show reaction mechanisms…

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Q: Predict the order of crystal field stabilization energy for the following compounds: 1) [Co(NH,),]*…

A: Crystal field stabilization energy is defined as energy difference between two sets of orbitals.

Q: Consider we have a fatty acid that is described by 20:3 (8, 11, 14), what is its structure going to…

A: Here we have to write the structure of the following given fatty acid from its nomenclature.

Q: CH2-CE CH CH2-C- CH3

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Q: 2. Calculate the mass of hydrogen formed when 25 grams of aluminum reacts with excess hydrochloric…

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Q: 14. Determine functional groups in ibuprofen. CH3 OH CH3

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Q: Phosphorus trichloride reacts with water, as shown here: PCI3 (1) + 3 H,0 (1) → H¿PO, (aq) +3 HCI…

A: PCl3 (l)  + 3 H2O (l) →H3PO3 (aq) + 3 HCl (aq) number of moles of a substance = Amount of substance/…

Q: Calculate the amount of heat that must be absorbed by 24.0 g of ice (-15°C) to convert it to water…

A: Given, Mass of ice = 24.0 g Initial temperature (Ti) of ice = -15°C Final temperature of (Tf) of…

Q: खो जव पजो e ह Pि्ने कक्ट केकपलेपरर (मतु-तम (तम5ु)- ०H--CH,- CHO be the prodert it कैम्ट CH3-CH CCH3…

A: Detail mechanistic pathway is given below to find out the product for oxidation and reduction…

Q: Give the condensed structure for the following image:

A: Given structure is :  Given condense structure for the following image = ?

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A: Given that μ 0.25 K/atm for nitrogen, calculate the value of its isothermal Joule-Thomson…

Q: 8) Suppose that S is regarded as a function of T and p, show that TdS= C,dT- T(OP/aT)y dv.

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Q: 11. A researcher wants to synthesize some pentaaminefluoromanganese(l) starting with…

A: This substitution reaction undergo through dissociative mechanism.            The mechanism of the…

Q: В. 6 CO2 (g) + 2 H20 (I) CGH1206 (s) + 6 02 (g) endothermic 7. Decreasing the temperature 8.…

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Q: I. Identify the compounds (reactants or products) corresponding to each letter. If there are several…

A: The reactions has been outlined below

Q: The standard enthalpy of combustion of solid carbon to form carbon dioxide gas is -393.7 kJ per mol…

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Q: Synthesize H3C from ethyne.

A: Detail mechanistic pathway is given below by which we can carry out the following synthesis reaction

Q: 6) Evaluate (S/aV)† for a van der Waals gas. For an isothermal expansion, will AS be greater for an…

A: The Van Der Waals gas, also known as real gas, has the gas equation given below: (P+n2aV2)(V-nb)=nRT…

Q: Calculate the density of CO2 in g / L , at STP. Calculate number of moles of gas that occupies a…

A: here we are required to find the density of carbon dioxide at STP.

Q: 7. In polysaccharides, monosaccharaides are joined by_ B. Glycosidic bond 8. Which of the following…

A: Reducing sugar is any sugar that is capable of acting as a reducing agent There are various  sugar…

Q: 2. Use colored pencils to circle the common atoms or compounds in each equation to help you…

A: Here we are required to classify the given reaction accordingly as synthesis ,decomposition or…

Q: A 0.400 L sample of gas at - 55.0 degrees * C and a pressure of 2.15 atm is allowed to expand to…

A: According to the Boyle's law For a given mass of a gas at constant temperature, pressure is…