Chemistry If 1.75 g of Mg(s) are mixed with 125 mL of 0.2M HCl(aq) at 25°C and P atm = 1.06 atm, what is the volume of hydrogen gas produced in liters if the hydrogen gas is collected over water? Mg(s) + 2 HCl(aq) → MgCl 2(aq) + H 2(g) AH %3D rxn = -467 kJ/mol

Q: Select the best choice that shows this skeleton equation correctly represented? H,O2 → 0, + H,0 (A)…

A: Given-> 7-> H2O2 ---> O2 + H2O 8->2C7H5(NO2)3(s) --> 7C(s) +7CO(g) + 3N2(g) +5H2O…

Q: 3. View the video and complete the table below. https://www.youtube.com/watch?v=UVv8KbQyF228…

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Q: 3. Calculate the heat of formation of methane (CH4) The equation involved is C (s) + 2 H2 (g) → CH4…

A: Heat of formation of a compound is equal to the heat of the reaction where 1 mol of the compound is…

Q: In an experiment, Milabel were tasked to prepare 200.00 mL of 3.5 M solution from a concentrated…

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Q: The correct configurations for A and B are: CI CH,OH Br H- -CH3 ČH3 OA-S B-S A-R B-S A-R B-R OA-S…

A: RS nomenclature: The RS nomenclature is an important nomenclature system for denoting the…

Q: Calculate (in milligrams) how much CaCl2 is required to make up 7.5mL of a 33mM solution (the MW of…

A: Given :  Molar concentration of solution = 33mM  Volume of solution = 7.5 mL  MW of CaCl2 = 110.98…

Q: A 30 cm'aliquot of 0.075 M Sodium hydroxide (NaOH) is titrated against a standardised HCl solution…

A: Volume of NaOH (V1)= 30 cm3 = 30 ml (1 cm3 = 1ml) Molarity of NaOH (M1)= 0.075 M Volume of HCl = 0.1…

Q: example for organic elimination reaction show: a. the overall reaction (reactants --> products)…

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Q: Glycine has the simplest structure of the 20 amino acids that make up proteins. What is the molarity…

A: Given: Moles of glycine = 0.715 mol Volume of solution = 495 mL

Q: Under what conditions does the enthalpy change equal the heat of a process

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Q: which is the best leaving group? explain why. A)C6H5CH2Cl B)C6H5CH2Br  C)C6H5CHCl2 D)C6H5CHClBr…

A: To answer the question which molecule has best leaving group.

Q: balance the following equation CH3Cl + O2 = CO2 + H2O + Cl2

A: The balance chemical reaction for the following equation = ?  CH3Cl + O2 ----> CO2 + H2O + Cl2

Q: Use the References to access impe Does a reaction occur when aqueous solutions of sodium hydroxide…

A: The reactants given are sodium hydroxide i.e. NaOH and copper (II) acetate i.e. Cu(CH3COO)2.

Q: 40 Estimate ΔG° at -51°C for the following reaction. 3O2(g) → 2O3(g)

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Q: 14. In the reaction H 2 O 2(aq) → H 2 O (l) + 1/2O 2 (g) the initial concentration of H 2 O 2 is…

A: H2O2(aq) --------> H2O(l) + 1/2O2(g) It is the 1St order kinetics reaction.

Q: Q2. Show the different between pure metal and binary alloy cooling curve and the reason of this…

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Q: Write the electron configuration for an aluminum cation with a charge of +2.

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Q: Calculate the density of oxygen at STP using the molar volume (22.414 l/mol) and the molar mass.…

A: Given -> Molar volume = 22.414 L /mole At STP -> T= 273 K P =1 atm Molar mass of O2= 32 g/mole…

Q: H3C Br HC Br Br H3C. Br. Br H3C H3C Br Br (a

A: IUPAC name of given molecule is -

Q: If no reaction occurs leave all boxes blank and click on "Submit". Write a net ionic equation for…

A: Given, aqueous solutions of sodium hydroxide (NaOH) reacts with perchloric acid (HClO4).

Q: C17H29COOH linolenic acid non-saponifiable w-3 fatty acid All are correct

A:

Q: How many Praseodymium atoms are present in 2.99 moles of Praseodymium ? Note: If your answer…

A: Given,  The number of atoms present in 2.99 moles of praseodymium is:

Q: in a benzoin cndensation reaction why is it necessary to check the pH

A: Benzoin condensation is a coupling reaction involving two aromatic aldehydes in presence of some…

Q: (Q15) What type of solution is expected to result when the ionic salt potassium nitrite (KNO2) is…

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Q: Balance

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Q: Since the Coomassie Brilliant Blue G-250 is a highly (basic, acidic) dye, it cannot be used for…

A: The structure of Coomassie brilliant blue G-250 is:

Q: functional groups

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Q: Hydrogen was collected over water at 21.0°C on a day when the atmosphere pressure was 748.0 Torr.…

A: Given that -  Temperature = 21°C = 294 K  Atmospheric pressure = 748.0 torr  Vapour pressure of…

Q: You park your car after work and notice the tires look like they are properly inflated.  But the…

A: Relationship between volume and temperature is explained in the following step.

Q: rodns is moS NH2 CH,CHCH, NH, IZ

A:

Q: What is the pH (to two decimal places) of a 2.0 M HF aqueous solution?…

A: Given: The molarity of HF aqueous solution is 2.0 M The Ka (acid dissociation constant) value is…

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A: Polar property comes only when there is electronegative difference and not symmetric. In the given…

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A: Here we have to find antimicrobial drug in which guanidine structure is not present.

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A: a) The reactants given are Pb(NO3)2 and Na2S.

Q: Which of the following represents the nuclear equation for the alpha decay of Polonium-216? O 216P0…

A:

Q: At a particular temperature, the solubility of In;(SO2)3 in water is 0.0045 M. You have found Ksp to…

A: Given: Ksp of In2(SO4)3 = 2.0×10-10 Molarity of Na2SO4 = 0.2 M

Q: How many moles of water are formed when 250 mL of 2 M HNO3 completely reacts with NaOH? HNO3(aq) +…

A: The balanced reaction given is, => Given: Concentration of HNO3 = 2 M Volume of HNO3 solution =…

Q: CH3(CH2)13CH2 OCH2(CH2)14CH3 a wax non-saponifiable both are correct neither is correct O O

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Q: Write a net ionic equation for the overall reaction that occurs when aqueous solutions of phosphoric…

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Q: Match the following descriptions to the given choices Synthesized from a steroid molecule A. Vitamin…

A: A vitamin is an organic molecule essential for macronutrient which living organisms need in low…

Q: Be sure to answer all parts. Predict whether the entropy change is positive or negative for each of…

A: Entropy (S) by the modern definition is the amount of energy dispersal in a system. Therefore, the…

Q: What volume (in microlitres) of a stock solution of 25% KCl would you need to generate 12.5mL of a…

A: Given that -  Percentage concentration of stock KCl Solution = 25%  Percentage concentration of new…

Q: What are some of the advantages and limitations of mass spectroscopy?

A: Mass spectroscopy :

Q: ball & stick v labels cis isomer trans isomer cis-trans isomerism not possible r Version 1 item…

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Q: Given the following chemical structures, arrange the hydrocarbons based on polarity? (most polar >…

A: Polarity depends upon the difference in electronegativity between and atoms. Greater the…

Q: H,C CH Br

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Q: If E° cell for the couples Fe 3+ /Fe 2+ ; MnO 4 2- ,H+ /Mn 2+ /v 2+ and Br 2 /Br are +0.77, +1.51,…

A: Given, E° cell for the couples Fe2-/Fe3+ ; MnO42-,H+/Mn2+,H2O ; Zn2+/Zn ; V3+/V2+ ; Br2/Br-  +0.77,…

Q: Identify the species oxidized, the species reduced, the oxidizing agent and the reducing agent in…

A: The reaction given is,

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.