stoichimetric

Q: Balance the following redox rxn by making a complete e-cell (oxidation number, salt bridge, type of…

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Q: AgNO3 + KCI ----->

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Q: IR Spectum Now 4000 3000 40 13C NMR Spectrum (500 M, COCI, soon) 80 2000 DEPT Ci ct cHt proton…

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Q: Calculate the molality of (7.45 g) KCI, which dissolved in 100 g water. (molar mass: H-1, O=16, K=…

A: To calculate the molality of given mass of KCl.

Q: How many Ne atoms are contained in 0.5 moles of neon (Ne) atoms?

A: Given that, moles of Ne= 0.5 moles  No. of Ne atoms = ?

Q: For the first-order reaction 1/2 N₂O4(e)-NO₂(g): AH-28.6 W the rate constant is k-3.24 x 10 sat-7°C,…

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Q: 4 1.0 mol each of CO and Cl, are introduced into an evacuated 1.75-1. flask, and the following…

A: Given in following question a reaction calculate a).partially pressure of Cocl2 and 2).total…

Q: If someone consumes 21 g of sodium chloride per day, what mass (in grams) of sodium does that person…

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Q: HBr 500 HCI - 10C

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Q: a. State the glycine species at pKa1 and pKa2.  b. Why a pH value is equal to pKa value in the…

A: The condensed structural formula of amino acid glycine is NH2-CH2-COOH.  Glycine has two acidic…

Q: Problem 1. What are products formed from the below reaction? Draw the stereoisomers and name them.…

A: Reactant is an alkene and HCl is the reagent. HCl adds on to the double bond resulting in the…

Q: Chemistry Consider the following sketch of the interaction energy for two atoms as a function of…

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Q: 1. Write the hybridization of each carbon atom:

A: Organic compounds are the compounds that contain carbon and hydrogen atoms.

Q: If the actual value is 100 and the measured value is 99 then the percent error is---- O 0.1 O 2% O…

A: We can calculate percent error by following formula percent error=Actual value-Measured vaueactual…

Q: Given the organic molecule, determine whether it is polar or nonpolar. Explain your answer.

A: The covalent bond is formed by the sharing of electrons between the atoms.

Q: Hemoglobin, Hb, has four Fe atoms per α molecule that, on average, bind about three O2 molecules.…

A: The equilibrium reaction for the oxygenation of hemoglobin is: Hb(aq) + 3O2(g) ⇌ Hb(O2)3(aq)

Q: When the following solutions are mixed together, what precipi- tate (if any) will form? a. FeSO4(aq)…

A: Here double replacement reaction takes place in all four equations .Double Replacement : It is a…

Q: Problem 2. What are products formed from the below reaction? Draw the stereoisomers and name them.

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Q: If an aqueous solution is 2.93% (w/v) in nickel(II) bromide, NiBr2, what is the osmolarity of the…

A: Dear student ,   since you have posted multiple questions we are allowed to solve only first…

Q: 1. Write the hybridization of each carbon atom:

A: Hybridisation is the overlapping or mixing of atomic orbital of different energy to generate…

Q: 1. A compound has an empirical formula of CH2 O and a molecular mass of 60 amu. What is the…

A: Two questions one regarding molecular formula and second regarding volume of a gas at STP are to be…

Q: Specify whether the calculated mass percent of water would be too high, too low, or unchanged as a…

A: #1: A hydrated salt contains both the unhydrated salt and water.  When we supply sufficient heat,…

Q: For the first-order reaction 1/2 N204 -> NO₂(g); AH = 28.6 kJ the rate constant is k= 3.24 x 10^5…

A: Recall the data, Activation energy Ea=53.7 KJ mol-1=53700 J mol-1 T1=(-7+273)K=266 K…

Q: What additional information must be considered to determine the number of moles of gas produced? The…

A: The numbers of moles calculation we require VOLUME , PRESSURE and TEMPERATURE. Volume of gas can be…

Q: Which of these reactions does not occur? -) NICHS CH₂OH OCH₂ c) 808 / Ho a ca CHÍNH, 90

A: The reactivity of the acyl compound depends on the partial positive charge present on the carbonyl…

Q: -I Calculate the Molarity of HNO3 in a solution containing 12.2% HNO3 and the density of it (HNO3)…

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Q: Isotopes means; same element can have different masses. O False O True

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Q: A buffer solution is an aqueous solution consisting of a mixture of -- O a weak acid and its…

A: Buffer Solution is a water-based solution that consists of a mixture of a weak acid and its…

Q: 11. K/U Determine the pH of a 0.35 mol/L hydrocyanic acid solution, HNC(aq), prepared by a research…

A: Concentration of HCN = 0.35 mole/L Ka(HCN) = 6.2 × 10-10

Q: 1. Describe the source of pH dependence in a glass membrane electrode.

A: According to Q&A guidelines of Bartleby, we are supposed to answer only the first question out…

Q: Consider a pure sample of sodium iodide which has the formula Nal. Of the options listed below, what…

A: Here we are required to find the intermolecular force present in NaI

Q: A large neon sign is to be filled with a mixture of gases containing 8.662 g Ne, 2.44g Xe and 3.11 g…

A: Given  Mass of Ne= 8.662 g Mass of Xe = 2.44 g Mass of Ar= 3.11 g Total mass of all gases = (8…

Q: Isotopes means; same element can have different masses. O False O True

A: Please find your solution below : An atom is the smallest unit and basic building block of matter…

Q: At a certain temperature this reaction follows second-order kinetics with a rate consta 2HI (g) →…

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Q: The natural product halomon could theoretically arise from another naturally occurring compound…

A: Addition of Br-Cl to an alkene : In the first step the double bond breaks and form a cyclic…

Q: 2. Using structural diagrams to explain the synthesis of butyl ethanoate from an alkane and an…

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Q: What type of class of molecule is formed in the reaction illustrated here?

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Q: 3 molal solution is more concentrated than 3 molar solution. True O False

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Q: A correct skeletal outline for sulfurous acid (H₂SO3) shown below. Starting from this structure,…

A: Lewis structure can be defined as the representation of valence shell electrons of an atom.

Q: 3 molal solution is more concentrated than 3 molar solution. O True O False

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Q: 15) At elevated temperatures, nitrogen dioxide decomposes to nitrogen oxide and oxygen: NO2 (g) → NO…

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Q: a le tion of mbrane Part A What is the height difference between the two water surfaces at a…

A: As per the guidelines, I am allowed to answer one question at a time. Please re upload the rest.

Q: Given the organic molecule, determine whether it is a polar or a non polar. Explain or provide…

A: Polar molecule is that molecule that contains some moiety having electronegativity difference…

Q: Q# 2: In a groundwater water sample carbonate and bicarbonate concentration are 2.2 and 594 mg/L…

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Q: For the first-order reaction 1/2 N204 -> NO₂(g); AH = 28.6 kJ the rate constant is k= 3.24 x 10^5…

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Q: Q# 2: In a groundwater water sample carbonate and bicarbonate concentration are 2.2 and 594 mg/L…

A: When determining alkalinity using sulphuric acid, the end point is obtained at pH 4.5 where all the…

Q: You are given 2 test tubes. One of it consists of glucose and the other maltose. Which of the tests…

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Q: + 6 HCl(aq) 2 AlCl3 (aq) + 3H₂(g) gas produced by this reaction is typically collected via water…

A: According to the question, hydrogen gas is produced by the reaction between metallic aluminum and…

Q: How can changing one group make a compound chemically different? Be sure to discuss how different…

A: Compound became chemically different means Compound gives completely different types of reactions.…

Q: Q3/ Synthesis the following compounds using any organic or inorganic reagents : from 4-bromo phenol…

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Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.