if you have 23.5 kPa of oxygen, 15.3 kPa of nitrogen and helium in a container with a total pressure of 101.3 kPa what would be the pressure exerted by Helium?

Q: Rank the aniens from stromgest to weakest base B. S.

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Q: Calculate the mass/volume percent composition, or % (m/V), of 2.50 × 102 mL of solution containing…

A: Given :-  Volume of solution = 2.50 × 102 mL  Mass of glucose = 18.0 g  To calculate :-  % (m/v) of…

Q: Enter your answer in the provided boX. Find the density of Freon-11 (CFCl) at 186°C and 6.03 atm.…

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Q: The percent by mass of manganese(II) in MnSO3 is %.

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Q: In each row check off the boxes that apply to the highlighted reactant. The highlighted reactant…

A: Concept:  Brønsted-lowery acid and base: According to Bronsted-Lowry, A acid is a substance which…

Q: Hou could the fallowing frmsformatione take Place ? Please show complete mechanism pd proper…

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Q: What is the solubility of silver iodide (AgI) in a solution containing 0.20 M sodium iodide (NaI)?…

A: Given, the Ksp of AgI = 1.5×10-16 We have to calculate the solubility of silver iodide(AgI) in a…

Q: Question 6 For the compound. Name the rompound I dentify each chiral center Are goometric isomers…

A: Isomers are the molecules having same molecular formula but different arrangement of atoms in it.

Q: Helium gas has a lower sound velocity than air, at the same pressure and temperature, at what ratio?…

A: Give in following question helium gas has a lower sound velocity than air at the sna e pressure and…

Q: Determine the value of ASgurr at 298 K, and predict whether or not the reaction is spontaneous at…

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Q: What mass of octane (CeH1e) is reacted to form 4.08 L of carbon dioxide at a temperature of 26.2 °C…

A: Given, Volume(V) = 4.08 L Pressure(P) = 1.23 atm Temperature(T) = 26.2 °C =  ( 26.2 + 273.15 ) K =…

Q: 1. Which of the following are aromatic? N. N- ZT ZI ZI

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Q: A chemist dissolves 723. mg of pure sodium hydroxide in enough water to make up 180. mL of solution.…

A: Given, mass of pure sodium hydroxide (NaOH) = 723. mg = 0.723 g Volume of the solution = 180. mL =…

Q: la) Propose a multistep synthesis to produce molecule below from benzene. Assume ortho and para…

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Q: Question 5 For the lompound: Br Name the Componnd I dentify each chiral center Are geometric isomers…

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Q: Consider the equilibrium system described by the chemical reaction below. Calculate the value of Qc…

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Q: a covalent compound.

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Q: Balance the following chemical equation in a basic solution: Fe(OH)2(s) + MnO4 (aq) → MnO2(s) +…

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Q: Why is an aqueous cream and procaine solution unstable and subject to cracking

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Q: Predict the products of this reaction, or press the "No Reaction" button if no reaction takes place.…

A: In the reaction between silver (Ag) and hydrochloric acid (HCl) , the precipitation of silver…

Q: The normal mode shown below corresponds to the uniform expansion of a benzene ring. Is this mode IR…

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Q: What is the product of the following reaction? CH,CH, CI 1. 2 CH,MgCl 2 H:0. H

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Q: Chemistry 1. CH3MgBr 2. H,о What is the stereochemistry of the product of the above reaction? O…

A: Aldehyde can be defined as.an organic compound in which CHO group  is attached  to carbon atom in…

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Q: A 17.3-L sample of gas is determined to contain 0.35 mole of N2. At the same temperature and…

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Q: At a certain temperature the rate of this reaction is second order in N,O, with a rate constant of…

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Q: Consider the galvanic cell based on the following half-reactions: Zn2+ + 2e - Zn e=-0.76 V Fe+ + 2e…

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Q: Enter your answer in the provided box. The combustion of how many moles of ethane (C,H) would be…

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Q: Under certain conditions the rate of this reaction is zero order in hydrogen iodide with a rate…

A: Initial moles = 150 mmol = 0.15 mol  Moles after time t = 75 mmol = 0.075 mol  Volume = 450 ml =…

Q: b. Rank by rate of electrophilic aromatic substitution. The compound that reacts the fastest in an…

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Q: Direction: Use Hess’ Law in determining the change in enthalpy of the chemical reaction. Follow the…

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Q: e formation reaction for Li2SO4.

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Q: When a curved arrow starts from a o bond and points to an atom, the o bond breaks. If the molecule…

A: Carbocation is species in which carbon is positively charged and carbon atom is sp2 hybridized.

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Q: 1. Give the theoretical rate equation for the forward direction when all are gases except for water.…

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Q: (a) O2N- NH2 NH2 H2 C CF3 H3C-N (b) F3C-N CH3

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Q: 2) Use the standard reaction enthalpies given below to determine AH°rxn for the following reaction:…

A: Given, a) N2(g) + O2(g) ➝ 2NO(g)  ∆H°rxn = +183 kJ b) 1/2N2(g) + O2(g) ➝ NO2(g)  ∆H°rxn = +33 kJ…

Q: 1. CH3MgBr 2. H30 What is the stereochemistry of the product of the above reaction? achiral…

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Q: HTERACTIVE EXAMPLE Electroplating How long will it take to plate out 1.0 g Ni from aqueous Ni2+ with…

A: Given :  Mass of Ni = 1.0 g  Current (I) = 119.9 A  Molar mass of Nickel = 58.7 gm/mol

Q: What type of pure substance can be decomposed chemically into other pure substances? O compound O…

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Q: 6. If the pH for a saturated Iron (II) hydroxide solution was decreased, what would happen to the…

A: Here we have to explain the effect of decrease of pH in the molar solubility of Iron(III) hydroxide.

Q: Which three of the following molecules have do not have a lone pair on the central atom? CH2F2 О НCN…

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Q: All of the following complexes have an octahedral structure. Fill in the blanks in the table. Number…

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Q: A chemist fills a reaction vessel with 0.894 M lead (1) (Pb") aqueous solution, 0,424 M bromide (Br)…

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Q: ion oxidation state of metal atom

A: Here , charge on halides is -1 . Charge on cyanide is -1 . And charge on hydroxide is -1. NH3 , H2O…

Q: Draw the structures of all the products of the following reactions. Pr3PCI2 + PHNH2 → 4 PCI3 + 6…

A: The correct answer is given below

Q: Enter your answer in the provided box. The combustion of how many moles of ethane (C,H) would be…

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Q: МОМОМОМ OMOM BF3-OEt, A RO" OTBS ÓTBS 2 R= H (52%) 3 R= MOM (30%)

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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.