A voltaic cell based on different concentrations of ions, such as seen in the diagram below with copper, is set up with the following materials: solid zinc electrodes, 0.200 M Zn(NO3)2, and 5.00 × 10–4 M Zn(NO3)2. what is the value of Ecell?   Written explain...

Q: The activation energy for the gas phase decomposition of chloroethane is 254 kJ. CH3CH2CI C2H4 + HCI…

A:

Q: BALANCING REDOX REACTIONS USING THE CHANGE IN OXIDATION NUMBER METHOD   1. PbO2 + HBr  >  PbBr2 + O2…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: The material with lowest density is: O a Metals Alloys Oc Polymers Od Ceramics O e Composite…

A: 1. Nichrome is used for making heating element of electrical appliances. Because nichrome does not…

Q: Consider the reaction between ozone, O3(g) & an unknown metal:   O3(g) + X(s) → XO (s) + O2(g) at…

A: Given reaction: O3(g) + X(s) → XO (s) + O2(g)

Q: electrons with other positively charged ions in soil solutions.

A:

Q: The rate equation for the reaction A→B + C is expressed in the forms of rate of disappearance of A =…

A:

Q: D. 76. Identify the SYSTEMATIC name of the molecule that is illustrated in this item. A.…

A:

Q: Table sugar granules were dissolved in a glass of water. The solid sugar granules have no measurable…

A: Given, Vapour pressure of water: 23.8 torr Mole fraction of water in the solution: 0.75

Q: Question 13 Particles are adsorbed onto a stationary phase is a step in Atomic Absorption…

A:

Q: Identify the encircled functional group.      a Amines     b Nitriles     c Amides     d…

A: Functional group : Functional group is a moiety which can be a group of atoms attached with…

Q: MW (mg/mmol) Density (mg/uL) Amount used vanillin 152.15 XXXXX 400.0 mg 102.09 1.08 500. 0 µL acetic…

A: Given that, the molar mass of acetic anhydride is 102.09 g/mol.  The density of acetic anhydride is…

Q: Calculate to five significant figures the binding energy in J/nucleon of the nucleus of an atom of…

A: Given:: mass of Fe = 55.9349 amu mass of proton = 1.0078 amu mass of neutron = 1.0087 amu

Q: B. Calculating Average Molecular Mass 3. Diboron heptoxide – B2O7

A: Given compound --->  Diboron heptoxide = B2O7  Average molecular mass = ?

Q: Calculate the mass of glucose required to prepare 200 ml of a 25% (m/v) glucose (C6H12O6) solution.…

A: Volume = 200 ml  Mass by volume percent = 25 %  Mass of glucose = ?

Q: 62. A 0.25g of a certain substance is dissolved in 60g of water. The freezing point of the solution…

A: Answer: This question is based on the colligative property of the solution where when a non-volatile…

Q: 28-31. Supply the missing value. n 1.55 1.65 1.70 1.80 ??? 1.62 Conc. 10% 15% 25% 35% 22% ???…

A: A question base on analytical process that is to be accomplished.

Q: Write the balanced reaction between AgNO3 and Bromide

A:

Q: Matching Type: Reactions differentiating test for oxidizable carbons A. 2,4-DNPH Test…

A: In SN1 mechanism carbocation intermediate is formed...

Q: Given below is a diagram of separation of two components of a mixture in a reverse phase…

A: Reverse phase chromatography is the technique whose mobile phase is more polar than stationary…

Q: 2. Find the AH for the reaction below, given the following reactions and subsequent AH values:…

A: Given equations are :  1). 2NaCl (s) + H2O (l) ---------> 2HCl (g) + Na2O (s) , ΔH1 = 507 KJ  2).…

Q: How many grams of NH3 can be produced from 40.0 grams of CaCN2? CACN2 + 3H20 CACO3 + 2 NH3

A:

Q: QUESTION 21 I1 22 mL of 0 137M MgCin is needed to completely react 15 ml of AgNO3 solution, what is…

A:

Q: Answer no. 36-37

A: 36) the name of the hydrocarbon is

Q: Concentration of F2 at equilibrium - Concentration of H2 at equilibrium -

A:

Q: (b) alpha emission from einsteinium-252 Es + -{ e → jet 252 252 99 Cf 98 252 Es → 99 252 e + 100 Fm…

A: Alpha emission is a type of radioactive decay in which an alpha particle is emitted.  General…

Q: A 315mL of water was added to 2100 mL of 19M NaCI solution. What is the new concentration of the…

A: Since you have asked multiple type questions, we will solve only first  questions for you. If you…

Q: Engineering materials are materials utilized in the development of new technologies. (A) True (B)…

A: Engineering materials are group of materials that can be used in construction of man-made structures…

Q: For the theoretical reaction: A+2B D+F a plausible 2-step reaction mechanism was determined to be 1.…

A: Theoretical reaction : A+2B ---> D+F  A plausible 2 step reaction mechanism :  1. A + B…

Q: How many lone pairs are involved in sustaining the conjugation of pyridine?

A: Lone pair are not involved in conjugation in pyridine

Q: limiting reagent

A:

Q: Which of the following test will produce a green flame after heating an immersed copper wire? O…

A:

Q: Draw the Lewis dot structure for CBr4 .            Choose the answer below that gives the (I)…

A: Lewis’s structure: Lewis’s bonding theory is based on the octet rule. The Lewis structure is a…

Q: Examine the following equilibrium table for the reaction shown at the top of the table. COlg) +…

A: If Q= K -> reaction is at equilibrium position If Q> K -> reaction shifts towards backward…

Q: At 20 °C, the following concentrations were found for the gases in an equilibrium mixture for the…

A: Given, N2O(g) + NO2(g) ⇌ 3NO(g) Temperature = 20°C = (20 + 273.15) K = 293.15 K Equilibrium…

Q: The molar mass of a compound is 180.16g/mol. Analysis of a sample of the compound indicates that it…

A: Please note- As per our company guidelines we are supposed to answer only one question. Kindly…

Q: ,what is the age of the wine?

A: We know for radioactive decay. Nt=N0e-kt Where, Nt= no of radioisotopes at any given time. t=t N0=…

Q: Which of the following is not a characteristic of metals? Group of answer choices basic oxides…

A: 1) Basic oxides Metals have basic oxides.

Q: Arrange the following compounds based in decreasing solubility in 5% HCl: NH N-CH3 O,N IV II The…

A: The solubility of given compound in 5% HCl is

Q: Show your complete and detailed solution.  What is the molecular diameter of N2(g) having a mean…

A:

Q: How many moles of iron will you need to react with 2.13 moles of sulfur? Given the following…

A: The amount of iron required is given below

Q: (a) beta emission from aluminum-30 Al → He + Na Al + -je → 12 Mg je + 1% Si ie + Si 30 Al 13 Al → e…

A:

Q: Which of the following test will produce a green flame after heating an immersed copper wire? O…

A: From the given four compounds we have to choose the correct compound, which produce green flame…

Q: Organic compounds that contain large proportions of nitrogen and oxygen tend to be unstable and are…

A:

Q: Suppose that 15M of Naci solution with a volume of 15L is heated and loses 2000ml of water content.…

A: 1) In the process of heating the amount of moles remains same .  Number of moles are given by =…

Q: Consider the equilibrium 2NaHSO3(s) Na2SO3(s) + H2O(g) + SO2(g) How will the position of equilibrium…

A: In the given equilibrium, a) Adding NaHSO3 to the reaction vessel Equilibrium will shift to the…

Q: 0.25g of a certain substance is dissolved in 60g of water. The freezing point of the solution is -…

A: Which one of the following is correct

Q: 315mL of water was added to 2100 mL of 19M NaCl solution. What is the new concentration of the…

A: Note : Since you have posted multiple questions, we are entitled to answer the first only. Please…

Q: Using the figure below, match the name of the parts of Flame Atomic Absorption Spectrophotometer…

A:

Q: Carboxylic acid contains -OH and a C=O. a True b False

A: Carboxylic acid contains -OH and a C=O.

Q: A particular galvanic cell has a redox reaction in which a magnesium metal displaces nickel (II) ion…

A: Mg(s) + Ni2+(aq) ------> Mg2+(aq) + Ni(s)  From the above overall cell reaction, we can see that…