Calculate the moles of O atoms in 8.8 g of Ba(NO3)2

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Q: r to recrystallize as

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Q: H OH benzaldehyde benzyl alcohol anthracene chlorobenzene Which molecule would you expect to have…

A: Rf is defined as the ratio of distance traveled by compound and distance traveled by solvent front.…

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A: Given - Mass of butane = 3.49 g            Mass of oxygen = 11.4 g

Q: 3. Using the data at right: a. Calculate the absorbance of each sample. You will need to express the…

A: We need to calculate the absorbance for each standard concentration and then plot the absorbance vs…

Q: Explain why 1,4-pentadiene is less acidic when compared to cyclopentadiene

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Q: Question: 2 d) Use the steady-state approximation to derive the rate law for dissociative…

A: The dissociative substitution of a metal carbonyl can be summarized as below:

Q: 1. Which of the following will give the lowest freezing point when added to 1 kg of water: 1 mol of…

A: Data given:  Number of moles of Co(C2H3O2)2 = 1 mol  Number of moles of KCl = 2 mol  Number of moles…

Q: Give the structure that corresponds to the following molecular formula and ¹H NMR spectrum:: CH₁60:8…

A: 1H-nmr spectra provides the hydrogen environment of the unknown compound. The splitting of nmr…

Q: 2. What is the molality of a solution dissolved in chloroform that boils at 62.8 °C? Boiling point…

A: We are given boiling point of a solution and the solvent. We are asked to find the molarity.

Q: name acetic acid hydrofluoric acid acid solution 0.1 M KCH3CO₂ 0.1 M CH3NH3Br 0.1 M NAI 0.1 M NaF Ka…

A: Given Ka of Acetic acid = 1.8×10-5 HF = 6.8×10-4 HI = 3.16×109 Kb value of  Methyl amine = 4.4 ×…

Q: 1. You want to maintain pH-7.0 for an enzyme-catalyzed reaction that will produce hydroxide ions…

A: Henderson equation is  pH = pKa + log [salt][acid] for maximum buffer capacity, pH = pKa and [salt]…

Q: pls answer asap thx a lot

A: Bioinorganic chemistry is branch of chemistry in which we deal with reaction of inorganic metal ions…

Q: Select the correct product(s) of the following reaction. A. CH3 OH D C B A CH₂ D. A and B B. H* CH3…

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Q: Calculate the number of formula units of calcium phosphate produced when 19.50 grams of calcium…

A: Given that,  19.50 grams of calcium fluoride reacts with excess of iron (II) phosphate  We need to…

Q: For small molecules of comparable molecular weight, list the intermolecular forces in the order of…

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Q: Draw the tripeptide HIS at pH-13. Label each peptide bond

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Q: The membrane of the mammary gland separates blood (pH = 7.4) from milk (pH = 6.6). You are given the…

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Q: For distillation, Calculate the pH of a solution prepared by adding 35.0 mL of 0.050 M HBr to 160.0…

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Q: Use the following vapor pressure data to answer the questions: Liquid Ag Ni Vapor Pressure, torr…

A: Vaporization is the process of conversion of a liquid into gaseous state. The liquids that have…

Q: Identify the functional groups present in the structure below. Select all that apply. O alcohol…

A: The organic compound is formed by two main elements, carbon, and hydrogen. The specific group of…

Q: 1. Sucrose (C12H22O11), commonly known as “table sugar”, is a carbohydrate formed from the…

A: Sucrose has a molecular formula of C12H22O11 We are asked the percentage of each element

Q: Aqueous hydrochloric acid (HCI) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium…

A: The reaction between HCl and NaOH is  HCl + NaOH -------------> NaCl + H2O  Given , Mass of HCl =…

Q: The vapor pressure of methanol (32.043 g/mol), CH₂OH, is 94 torr at 20 °C. The vapor pressure of…

A: Given - 1.Vapor pressure of methanol at 20°C = 94 torr Vapor pressure of ethanol at 20°C = 44 torr…

Q: QUESTION 1 A system which undergoes an adiabatic change (i.e. q = 0) and does work on the…

A: According to the first law of thermodynamics, the energy of the universe remains constant. For a…

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Q: H3C. CH3 HBr 0°C

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Q: What is the concentration of Na3PO3 when 872.39 mg of Na3PO4 is dissolved in 1074.9 mL of water?…

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Q: What is the stretching frequency (in cm-¹) of the following carbonyl? O 1745 O 1715 O 1685 O none of…

A: Given molecule is ketone.  Frequency of Carbonyl of ketone is 1715 cm-1 . but when there is…

Q: Consider the following data on some weak acids and weak bases: name acid solution 0.1 M KCN 0.1 M…

A: pH of a solution is defined as the negative logarithm of Hydrogen ion concentration.  pH = -log(H+)

Q: Match the following aqueous solutions with the appropriate letter from the column on the right.…

A: When a non-volatile solute is added to a pure solvent the freezing point of the solvent decreases.…

Q: cobalt(II) phosphate octahydrate Express your answer as a chemical formula.

A: The given compound is cobalt(II) phosphate octahydrate.

Q: Construct the orbital diagram for the ion Mo³+. Drag the appropriate labels to their respective…

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Q: What is the IUPAC name for the following molecule? CI Br

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Q: A solution is made initially with 0.450 M HIO (Kc = 0.170). Once the equilibrium below is…

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Q: CH3 Polar neutral lysine H NH3 -COO glutamate Hydrophobic ooc-CH₂- H NH₂ -coo nonpolar amino acids…

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Q: convert: 0.0512 km/h to cm/s 1.3 l/h to ml/s can you please show the working?

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Q: Consider the reaction: 2 HI (g) = H₂ (g) + 12 (g) Kc = 7.21 If at equilibrium the reaction vessel…

A: We can find concentration of HI using the formula of Kc.   The given solution is shown below-

Q: at is the hybridization Both of them are sp² of the terminal O atoms? The double bonded O is sp² and…

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Q: Combustion

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Q: In the Part II figure, showing the structure of the toxic South American rattlesnake peptide (see…

A: This is a problem based on amino acid residues related to biomolecules.

Q: How many entities are present in each of the following? (a) 3.21 mol argon atoms

A: Given 3.21 mol Argon atoms

Q: What is the approximate effective nuclear charge for the valence electrons in a boron atom?

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Q: Write the skeletal structure of Ethanol. What is the major intermolecular forever found in this…

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Q: Where should the analyte be spotted on a TLC plate?     Below the 1 cm spot line     On the 1 cm…

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Q: Ammonium phosphate ((NH₂), PO4) IS is an important ingredient in many fertilizers. It can be made by…

A: Here we have to use the concept of stoichiometry

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.