How many grams of caffeine need to be added to 850 ml of benzene to make a 0.55 m solution? Density (g/ml) Molecular Weight (g/mol) Caffeine 1.23 194.2 Benzene 0.8786 78.1 94 g 918 O 80 g O 110 g

Q: For whole blood flowing in a capillary of radius 1.9x10-4 cm, estimate the maximum velocity for…

A:

Q: . How much Cr(s) will plate out of a K2CrO4 solution if we use a current of 15A for 1 hour?…

A: Given,  Current (i) = 15 A Time = 1 hr = 3600 s Moalr mass(M) of Cr = 52 g/mol Number of electrons…

Q: 1. 10.0 g of NaHCO3 is dissolved in a mixture of 1750 mL water and 250 mL of 0.20 M NaOH. a.…

A: pH of solution can be calculated using Henderson hasselbalch equation.

Q: 2Ag* (aq) + Cu(s) → 2Ag(s) + Cu²+ (aq) O2ce4+ + 21--> 2Ce³+ +12 2Hg2+ (aq) + 2Br (aq) → H82²+ (aq) +…

A: Solution. Cell reaction is 2Ag+ (aq) + Cu (s) →2Ag (s) + Cu2+ (aq)   half cell reaction at cathode…

Q: Which of the following is the strongest acids? A. Benzoic acid, K₂ = 6.25 x 10-5. B. Formic acid, K₂…

A: pKa value: pKa value negative logarithm of the acid dissociation constant (Ka). pKa = -logKa Low pKa…

Q: Calculate the volume of N₂ gas in L if 1.79 g of N₂ at 28.0°C have a pressure of 507.0 Torr. (R =…

A:

Q: A reaction vessel is charged with only 0.616 atm of NO, 0.616 atm of H20 and 0.307 atm of H2 gases.…

A:

Q: y acidic protons

A:

Q: Name the following complex ions. formula [V(CN)]* [Co (CN),] [Crc14] name

A: Name the following complex ions---

Q: How much water can you extract from 1.00 L of 0.35 M solution of sugar at 40 C by exerting a…

A:

Q: How much water can you extract from 1.00 L of 0.35 M solution of sugar at 40 C by exerting a…

A: We will use  PV= nRT

Q: In the electrolysis of molten copper(II) chloride, what are the products (select ALL correct…

A: Oxidation occur at anode and reduction occur at cathode. Oxidation involve loss of electrons and…

Q: Q11.51 O Homework Answered Which of the following regions " to "V" indicate the following…

A: This is the heating curve.

Q: Consider the weak acids below and their corresponding Ką values. Rank the acids from weakest to…

A: Higher the value of Ka, higher will be the acidic strength.

Q: sing the thermodynamic information in the ALEKS Data tab, calculate the standard reaction entropy of…

A: Given : C(s) + 2Cl2 (g)--> CCl4(g)

Q: Hydrogen peroxide, H₂O₂, has a density of 1.45 g/cm³ and decomposes spontaneously but slowly. The…

A: Given that,  Density of H2O2 solution = 1.45 g/cm3 = 1.45 g/mL  [* 1 cm3 = 1 mL ]  The steps for…

Q: a. Draw a structure showing at least four repeat units of polyacrylonitrile {[CH2-CH(CN)]n}…

A:

Q: Decide whether a chemical reaction happens in either of the following situations. If a reaction does…

A: Given:

Q: The reaction NO (g) + 03 (g) = NO2 (g) + O2 (g) reaches equilibrium at 310 K. Some of the NO2 gas is…

A: In the given equilibrium, we removed the NO2 gas from the reaction chamber.

Q: 2 HC162) + Mg (S), Molealar equation Total jonic equation Net jonic equation

A:

Q: The K₂ for a base is 15.3 x 10-13. What is the Ka for its conjugate acid?

A: Given :- kb for a base = 15.3 × 10-13  To determine :- value of Ka for its conjugate acid

Q: A 93.6 g sample of ground water is found to have a lead concentration of 15.65 ppm. Calculate the…

A: Given : Mass of sample = 93.6 g Concentration of lead = 15.65ppm

Q: When the following half reaction is properly balanced, what else appears on the right side besides…

A: Balanced reaction and what appear right side --

Q: When the following equation is balanced properly under acidic conditions, what are the coefficients…

A: Water is present as reactant. With the coefficient of two. Three electrons are transport in this…

Q: 3. Draw the tripeptide described by Phe-Trp-Cys. Your drawing can be condensed structural formula,…

A: Amino acids contain carboxylic acid and an amine functional group on the same carbon atom. Amino…

Q: A free energy diagram for a generic reaction, reactants products, shown below. On the horizontal…

A:

Q: Hydrogen peroxide has a density of 1.45 g/cm^3 and decomposes spontaneously but slowly. The steps…

A: Density :-  The ratio of mass of a substance to volume occupied by that substance at a given…

Q: How do you measure the amount of heavy metals concentration in soil?

A: Heavy metals refer to any metallic chemical element that has a relatively high density and is toxic…

Q: Calculate the mole fraction of He in a mixture of He and N2 that contains 4.25 g of He and 29.5 g of…

A:

Q: or the reaction N2(g) + O2(g)  2 NO(g) G° = 172.1 kJ and S° = 24.9 J/K at 340 K and 1 atm. This…

A: Given : G° = 172.1 kJ  S° = 24.9 J/K at 340 K and 1 atm.

Q: Draw the structure(s) of the major organic product(s) of the following reaction after aqueous…

A: Note : N-acylation. Above reaction acyl substitution. Here is chlorine is leaving group.

Q: A bubble of air escaping from a diver's mask rises from a depth of 152 ft to the surface where the…

A: Given the depth of water, h = 152 ft * 0.3048 m1 ft = 46.33 m density of sea water, d = 1.025 g/mL…

Q: In the Brønsted-Lowry definition of acids and bases, an acid O A. is a proton donor. O B. is a…

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

Q: H₂C-CH-CH3 "I I Br OH

A: In this question we have to tell the IUPAC name of the compound

Q: Determine the equilibrium constant at 255 K for the following reaction under acidic conditions. 4H+…

A: We can calculate equilibrium constant by using equation ∆G°= -R T lnK Where  ∆G°= Gibbs free energy…

Q: given the density of cyclohexane is 0.779glml, what would be the mass of 25.0 mL in grams

A: Given data :  Density of cyclohexane =0.779gm ml-1  Vol.= 25ml  Mass= ?

Q: What is the equilibrium constant K at 25°C for an electrochemical cell when E° = +0.0360 V and n =…

A:

Q: Which of the following is necessarily true for a galvanic cell with the following reaction? NiSO4…

A: Solutions- Galvanic cell for the reaction between Nickel sulphate and iron.

Q: A student reacts benzene, C6H6, with bromine, Br2, to prepare bromobenzene, C6H5Br, and HBr. C6H6 +…

A:

Q: What type(s) of intermolecular forces must be overcome when liquid dipropyl ether (CH3CH₂CH2-O-…

A: Given : We have to tell what type of intermolecular forces overcome when ether is heated.

Q: QUESTION 16 In general, when an acid and a base are mixed, A. a new acid and a salt are formed O B.…

A: Answer the given question,

Q: Calculate Eºcell for the following reaction: 2Fe2+ (aq) + Cd2+ (aq) → 2Fe³+ (aq) + Cd(s) Reduction…

A:

Q: Jaya needs to measure the unknown concentration of Sn2+. A Galvanic cell is set up in a room with a…

A:

Q: e standard Gibbs Free Energy, AG n rxn, for th

A:

Q: For a reaction with the rate law below: Rate = k O a plot of log [A]o/[A] vs. 1/time gives a…

A: Given rate law, rate = k Rate is independent of concentration.

Q: Nickel metal has a density of 8.909 g/cm^3 and an atomic radius of 124.6 pm. a.) Calculate the…

A:

Q: Which compound has the element X with the oxidation number of +5. (select all that are correct)…

A: Below attached file showing the details answer.  All the best.

Q: When the following half reaction is properly balanced, what else appears on the right side besides…

A: Balanced the reaction and what appear on right side--

Q: (b) Write an expression of the vibrational partition function. Obtain the relation of the…

A: The answers are given below:

Q: Balance the following chemical equations and indicate the type of reaction taking place. If the…

A: we need to balance equation 3 and 4