When 2.5 g of a substance was dissolved in 125 g of water, the freezing point was lowered by 0.310.  Calculate the molecular weight of the compound.  (The molecular freezing-point-lowering constant for water is 1.860).

Q: Determine the isoelectric point of amino acids lysine and glycine. Write the solution.   Draw the…

A: Isoelectric point - The isoelectric point (pI) is the pH of a solution at which the net charge of a…

Q: Substance X is known to exist at 1 atm in the solid, liquid, or vapor phase, depending on the…

A: Given: Initial temperature sample X = 50 oC Heat energy added = 6.0 kJ/mol melting point 75 oC…

Q: of Temperature on Vapor Pressure of Water Temp. (°C) Temp (K) Gas Vol. (mL) Pair (atm) Pwater (atm)…

A: Given: Temperature (oC) 80 oC 75 oC 70 oC 65 oC 60 oC 55 oC 50 oC 45 oC Temperature (K) 353.15…

Q: We are trying to determine the substitution pattern on an aromatic ring by looking at the region…

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Q: A student sets up the following equation to convert a measurement. (The ? stands for a number the…

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Q: Chemistry use the NMR spectra to deterime the structure for C7H6O2

A: Ir and HNMr helps in finding  out the correct structure of compound.

Q: QUESTION 8 What was the distance (in cm) traveled by the SOLVENT FRONT in the TLC below: 6 8 3 2 1 -…

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Q: The natural line width of an atomic transition is determined by what property? a. lifetimes of the…

A: Here we have asked for the natural line width of an atomic transition is determined by what…

Q: How does the Thompson proposed atomic structure and daltons proposed atomic structure differ do…

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Q: An example of the particle-like nature of light is Interference patterns When two beams of light…

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Q: Fill-in the table below: Element Mass number Number of neutrons Number of protons Number of…

A: To fill the table, we would use the following relationships :  1.) Number of protons = atomic number…

Q: 0 Which one of these compounds would give two signals between 60 and 85 in the proton NMR? O…

A: NMR is a branch of spectroscopy in which we deal with shielding and D shielding effect of proton In…

Q: notes on Elucidation of structure of gas phase molecule by Electro

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Q: An unknown compound contains only carbon, hydrogen, and oxygen (CxHyOzCxHyOz). Combustion of 5.00 gg…

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Q: Draw a major resonance contributor of: CH3CH=CHCHCH2CH3

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Q: 1 What is the wavelength (in nm) of a photon if the energy is 7.89 × 10⁻¹⁹ J? (h = 6.626 × 10⁻³⁴ J •…

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Q: Consider the following reaction where Ke 1.29x10-2 at 600 K: = CoCl₂(g) co(g) + Cl₂(g) A reaction…

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Q: Design a synthesis for each of the following target compounds, starting from the starting…

A: To get the target molecule we need the following reactions 1. Oxidation of alcohol to carbonyl…

Q: Balanced equation for the reaction of nitrogen with hydrogen to produce ammonia. 1st…

A: The chemical reaction between nitrogen (N2) and hydrogen (H2) to produce an ammonia (NH3) is as…

Q: According to the following pKa values listed for a set of acids, which would lead to the strongest…

A: pKa is the negative logarithm of acid dissociation constant Ka of base ten .The mathematical…

Q: Describe a chemical test in which aldehydes and ketones react in the same way. State the expected…

A: Organic compounds can be defined as the compounds that contain carbon and hydrogen atoms. Both…

Q: How does decreasing the total energy of the system affect the stability of the pair of atoms in the…

A: Generally chemical bond formation between two atoms is exothermic in nature. Chemical bond is…

Q: A student wants to determine AG experimentally of an aqueous reaction. Which materials can work?…

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Q: Does knowing the ratio of masses of the elements in a compound lead to the unique chemical identity…

A: There are five basic laws of chemical combination that govern the chemical combinations of…

Q: A combustion reactor is fed with 65 kg/mol/h of air. Calculate the percentage of excess (0₂) air and…

A: Butane Organic substance butane has the chemical formula C4H10. A saturated hydrocarbon with four…

Q: Chemistry H₂C CH3 OH 1. TSCI 2. Pho Give the product of the following reaction:

A: -> First of all TsCl makes alcohol a better leaving group then PhO- acts as nucleophile and…

Q: What is the oxidation number of phosphorus in POCI3? VD] ΑΣΦ ?

A: The oxidation number of an atom in a molecule is the number of electrons that atom either gains or…

Q: The energy required to remove electrons from elemental cesium is 376 kJ/mol. What is the threshold…

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Q: 50.0 g of N2O4 is introduced into an evacuated 2.00 L vessel and allowed to come to equilibrium with…

A: mass of N2O4 = 50.0 g  molar mass of N2O4 = 92.0 g/mol moles of N2O4 = 50.0 g /92.0 g/mol = 0.543…

Q: 1. Millining, pulverizing are terminology for -------- process. . The Mohs scale hardness for…

A: Pulverization is the process of applying an external force to a (solid) material of a certain size…

Q: 2 3 4 6 7 8 100 QUESTION 4 How much sample should be loaded into the capillary tube for a Melting…

A: 4) We have to answer how  much sample should be loaded into the capillary tube for a Melting Range…

Q: a. Calculate the part of the element's atomic mass from each type of isotope in the sample. < b.…

A: average atomic mass formula = ∑A×M where A = natural abundance and M = mass number of isotope.

Q: What hybridization best describes the circled atom? O sp O sp³ O sp²

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Q: Complete the IUPAC Name of the structure.

A: The naming of organic compounds can be done with help of rules of international union of pure and…

Q: Exercise 1. The quantity of charge, Q, in coulombs passing through an electrical circuit is Q = lxt…

A: Calculate passing  the total charge through circuit

Q: We are trying to determine the substitution pattern on an aromatic ring by looking at the region…

A: Concept based on the the proton NMR spectroscopy.

Q: Both OF2 and CS2 molecules contain polar bonds. Why one of these molecules is polar and the other is…

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Q: Ka for acetic acid, CH3COOH, is 1.80x10-5. Ka for hydrofluoric acid, HF, is 7.20×10-4. Ką for phenol…

A: Given data : Ka for acetic acid, CH3COOH, is 1.80×10-5 Ka for hydrofluoric acid, HF, is 7.20×10-4 Ka…

Q: CI O

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Q: mechanism starting from Carboxylic Acid to any derivative

A: Carboxylic acid (RCOOH) on treatment with alcohol (R'OH) in the presence of concentrated sulfuric…

Q: Shown below is the titration curve for phosphoric acid. At what pH is the solution entirely in the…

A: From the it is clear that at pH 2.1 H3PO4 is exist.

Q: For the following reaction at equilibrium CO(g) + 2H2(g) CH3OH (g) In a 2.00 L flask, a mixture of…

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Q: A photon with a 1 electron volt Type your answer.... wavelength of 2.46 nm strikes a surface and…

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Q: Macmillan Le O Draw the correct product for the given Diels-Alder reaction. + H Sel

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Q: 1. On October 22, 2020, the FDA approved Veklury (remdesivir structure shown below) for use in…

A: To calculate Kier Hall electronegativity index, below mentioned formula is used: χ = Column number -…

Q: Given the half-reactions: WO₂ + 4H+ + 4e ---> W + 2H₂O 2SO42 + 4H+ + 2e ---> S₂06² + 2H₂O Balance…

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Q: A total of 10.0 g of potassium permanganate, an ionic compound with chemical formula KMnO4, is…

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Q: The gas phase reaction of hydrogen with iodine H₂+I22HI is first order in H₂ and first order in I2.…

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Q: Moles, Molecules, and Grams Worksheet and Key F # Atoms Or # Molecules Use Avogadro's Number 1 mole…

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Q: How many hydrogen atoms are there in 5.0 mols of C₂H₂? 1.8 x 1025 atoms 3.6 x 1024 atom's 3.0 x 1024…

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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.