A student mixes 50.mL of 0.15 M Na2CO3 and 50.0 of 0.15 M CaCl2 and collects 0.68 g of dried CaCO3. Calculate the percent yield. Round your answer to 2 sig

Q: Calculate the vapor pressure of a solution of 23.5 g of glycerol (C₂H₂O3) in 500.0 g of water at…

A: Given: Amount of glycerol = 23.5 g  Amount of H2O taken = 500.0 g Vapor pressure of H2O at 25°C =…

Q: Which of the following species represents an exception to the octet rule? elect one or more: CIF₂ D…

A: The octet rule states that atoms tend to gain, lose, or share electrons in order to achieve a stable…

Q: Which of the following quantum numbers describes the orientation of an orbital? magnetic quantum…

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Q: Question 1 a) The diagram below shows a plan view of the apparatus used by Rutherford and his team…

A: The experiment done by Rutherford was pioneering for understanding the structure of atom. Before…

Q: D Construct the orbital diagram of the F¯ ion. Energy 3p 3s 2p 2s 1s OOO OOO 1 Answer Bank 1

A: An anion is formed when an electron is accepted by an atom.  Anion contain more electron than the…

Q: Determine the mass of carbon dioxide one could expect to form (and the percent yield) for the…

A: When alkane react with oxygen then it produce carbon dioxide and water vapour.  The general formula…

Q: Calculate the standard molar entropy of vaporization of water at 33.0 °C, given that its standard…

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Q: Part D What is the pH change of a 0.270 M solution of benzoic acid (pK₂ = 4.19) if 0.175 M benzoate…

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Q: Use the electron affinity (EA) data for Cl, Br, and I, along with your knowledge of periodic trends,…

A: Electron affinity (EA):-  electron affinity is the amount of energy released when an electron is…

Q: You would like to determine how many calories are in 10 grams of chicken that is served in the LaGCC…

A: Given mass of chicken = 10 g specific heat of chicken =  3.68 J/g⁰C Change in temperature =  1.90⁰C…

Q: 5. The volume of a gas is 1 liter at 45.0°C, if the temperature is decreased to 7.0°C without…

A: Initially, Volume (V1) = 1 L Temperature (T1) = 45.0°C = (45.0 + 273.15) K = 318.15 K Later, Volume…

Q: How many valence electrons does a neutral tellurium atom have?

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Q: The K of a certain indicator is 8 × 10. The color of HIn is green and that of In is red. A few drops…

A: The question is based on the concept of titrations. we need to calculate the pH range in which the…

Q: Place the following elements in increasing order (lowest to highest) according to the trend. Text a.…

A: Ionization energy is defined as the amount of energy required to remove valence electron from…

Q: Pure B-D-glucose has [a] = +18° Pure a-D-glucose has [a] = +112° If either pure, crystalline anomer…

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Q: What element forms an ion with an electronic configuration of [Ne] and a -2 charge? element symbol:…

A: We have to tell which element forms an ion with an electronic configuration of [Ne] and a -2 charge.…

Q: 3. Which of these types of airflow does a downdraft spraybooth provide? A. Laminar B. Turbulent C.…

A: A downdraft spray booth is an enclosed workspace that is designed to provide a controlled…

Q: S Consider the reaction 2CO2(g) + 5H₂(g) C₂H₂(g) + 4H₂O(g) Using the standard thermodynamic data in…

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Q: Where did the 2.43 come from?

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Q: solution is prepared at 25°C that is initially 0.41M in ammonia NH3 , a weak base with =Kb×1.810−5 ,…

A: solution contains weak base (ammonia) and corresponding salt (ammonium chloride) of strong acid. so…

Q: 1 + 2 EtLi Ph - LiBr(s) -Lil(s) 7 9 1. CuBr(s) 2. -78°C EtLi 8 & + 2 tBuLi 5 25°C 3 HCl(aq) water…

A: EtLi attacks on carbonyl carbon Et2CuLi attacks on alpha-beta-unsaturated carbon  t-BuLi reacts with…

Q: For each chemical reaction in the table below, decide whether the highlighted reactant is a…

A: According to Bronsted-Lowry theory acid donates proton and base accepts proton.

Q: Consider the compound with the following condensed molecular formula: CH3CHOHCH=CH₂ What is the…

A: We know the formula for calculating formal charge (FC) on an atom in a molecule is: FC = valence…

Q: Carbon monoxide and nitrogen monoxide gases combine to form carbon dioxide and nitrogen gases…

A: 2CO(g) + 2NO(g) ↔2CO2(g)+ N2 (g) Given : ∆G0 =-689.6KJ The partial pressures of the gases are PCO =…

Q: QUESTION 15 Electrochemistry In Part B of this lab, an electrolytic cell is assembled. Which…

A: The question is based on the concept of electrochemistry . we need to identify the reaction taking…

Q: QUESTION 14 Electrochemistry In Part A of this experiment, a series of galvanic cells are built.…

A: The question is based on the concept of electrochemistry . we need to identify the correct statement…

Q: Suppose the galvanic cell sketched below is powered by the following reaction: Mn(s) + Pb(NO3)₂(aq)…

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Q: use methane to illustrate all the steps in free radical substitution with Cl2; please show…

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Q: Acetylene (C2H2) gas is often used in welding torches because of the very high heat produced when it…

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Q: solution is prepared at 25°C that is initially 0.16M in nitrous acid HNO2 , a weak acid with…

A: The pH of a mixture of weak acid and it's salt can be calculated using the formula given below:

Q: For the system at equilibrium represented by A + 2B 2C, Keq = 2.19. What is the value of K'eq? 4…

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Q: 1) Draw the mechanism of hex-1-ene and bromine water. 2) Draw the mechanism of pentane and bromine…

A: alkene compound react with bromine water to form addition product. water attack to more substituted…

Q: Complete the electron configuration for Br. electron configuration: [Ar]

A: Electronic configuration, also called electronic structure or electron configuration, the…

Q: What are the hydrolysis products of the following reaction? 0 11 NHCCH3 Cl H₂O, NaOH heat 0…

A: Amides undergo basic hydrolysis in the presence of NaOH, H2O to give amine and salt of Carboxylic…

Q: For part, b would the calculations be the same for NO3^- (aq) and CO^2+ (aq), meaning those species…

A: For the species, Co2+ (aq) and NO3- (aq), would be the standard conditions remain the same, that is,…

Q: QUESTION 12 Analysis of an Iron Complex In Part B of this experiment, the oxalate content of the…

A: The question is based on the concept of redox titrations. we need to identify the end point of the…

Q: Do you think there is a single criteria we can use to determine whether a solid is crystalline or…

A: A question based on properties of solids. A statement question about the distinction between…

Q: Calcium metal )40.08 g/mol) crystallizes with a body centered cubic arrangement. The atomic radius…

A: For BCC arrangement, number of atoms per unit cell = 2 we know, density = mass / volume  and volume…

Q: Given the following set of atoms, write a bond-line formula for a possible constitutional isomer for…

A: Constitutional isomers are the compounds that have same chemical formula but atoms are connected in…

Q: 4. Provide a clear arrow-pushing mechanism for the following reaction. Do not skip proton transfers,…

A: Pyridine acts as base that accept the proton . Sterically hindered nucleophile attack from less…

Q: Determine the number of valence electrons for each of the atoms. Enter each answer as a numeral. For…

A: Valence electrons are the electrons which are present in the outermost shell of an atom. Valency is…

Q: In the reaction between 4.28 g of  K(s) and excess of O2(g),  potassium oxide is formed .  What mass…

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Q: How many moles of N2O5are produced when 3.00 g of O2 react completely in the following equation?…

A: we have to calculate the moles of N2O5

Q: Nitrogen dioxide and water react to form nitric acid and nitrogen monoxide, like this: 3…

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Q: The coefficients in a reaction equation are not necessarily equal to the reaction orders, whereas…

A: Statement:-  The coefficients in a reaction equation are not necessarily equal to the reaction…

Q: 3. Carbon-14 is an isotope: A. it has the same number of protons and electrons as Carbon-12, but a…

A: The atoms with the same number of protons but different numbers of neutrons or mass numbers are…

Q: 1. Prepare the following compounds from any simple alkyl halide having four carbons or less (can be…

A: Applying concept of organic synthesis and reagents.

Q: Give the systematic name for the following coordination compound or complex ion:

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Q: Indicate whether aqueous solutions of the salts below will be acidic (a), basic (b), * or neutral…

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Q: Which of the following is an incorrect Lewis electron-dot structure? 1 2 3 لیا in 5 6 JA 1 H 1.0…

A: Lewis dot structure : It is the representation of electrons using dots (represented as electrons )…

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.