What is the boiling point of 0.800 m lactose in water? (Kb for water is 0.512°C/m) °C

Q: A base is added to a 0.050 M solution of MnCl2, raising the pH gradually. Calculate the pH of the…

A:

Q: If the average molar mass of a sample of soybean oil is 1500 g/mol, how many grams of NaOH are…

A: Saponification is the process that involves the conversion of fat, oil, or lipid, into soap and…

Q: Calculate the molarity (M) of a 46% (w/v) copper sulfate solution (m.w. = 160.0 g/mol)

A: Molarity is the number of moles of solute per litre of solution.

Q: When 50 grams of KCI is dissolved in 100 grams of water at 50 °C, the solution can be correctly…

A: Introduction: The solid substance that can be dissolved into a liquid is referred to as solute. On…

Q: There are several different units that biochemists use to describe the concentration of a solution.…

A: BSA means bovine serum albumin. Given Values: Mol. wt of BSA = 80000 Dalton or 80 kD Weight of the…

Q: hat mass of sodium glycolate (NaC2H3O3) should be added to 400.0 mL of 1.00 M glycolic acid to…

A: We have given [ C2 H4 O3  = 1.00 , Volume= 4.00mL, pH=4.0

Q: Assume the energy of hydrogen bonds per base pair solution at 319 K. ratio - 283

A: 9.8.2016 Cresawn BIO 140 The Chemistry of Life I. Ionic Bonds a. So different, that electrons are…

Q: Use the following balanced equation for problems 1-5. Molar masses are given below. 2 As + 3 H2 2…

A: Balanced chemical equation: This is an equation representing a chemical reaction in which the total…

Q: The Thermal conductivity of rock salt measured at a temperature of 500 degrees C what value would be…

A: thermal conductivity at 500°C would be about 0.2 W/m°C less than the thermal conductivity at 400°C…

Q: If you have a sugar with a molecular weight of 315 g/mol, how many grams would you need to add to…

A: Given the molecular weight of sugar is 315g/mol. The volume of the solution is 487 mL and its…

Q: You have 150 g of dextrose available and you need to compound a 20% solution. If you use the entire…

A: When we describe a concentration as a percentage without specifying the type of formula, we imply…

Q: Propanamide and methyl acetate have about the same molar mass, both are quite soluble in water, and…

A: Propanamide is an amide of propanoic acid with the chemical formula CH3CH2CONH2. Methyl acetate is…

Q: For an acid HA, the concentrations of HA and A are 0.075 and 0.025, respectively, at pH 6.0. What is…

A: The value of pKa is used to indicate the acid strength.  pKa is a negative log of Ka value or the…

Q: Given the following graph, what are the pKa's of the polyprotic species? Analytical Concentrations…

A: In contrast to monoprotic acids, which can only provide one proton per molecule, polyprotic acids…

Q: How many milliliters of 0.125 M sulfuric acid are required to exactly neutralize 25.0 mL of 0.0850 M…

A: GIVEN: The Concentration of sulfuric acid= 0.125 M Volume of NH3 =25.0 mL The concentration of NH3 =…

Q: How many grams of digoxXin (LANOXIN) would be required to make 25,000 tablets each containing 250…

A: This is a word problem where first we have to find out how many micrograms do the 25,000 tablets…

Q: You want 235mL of a solution that consists of 10% BSA, 2.37mM KCl and 120µM EDTA.  You have stock…

A: BSA is a globular proteins which is a well studied proteins and used as standard protein molecule in…

Q: How much magnesium chloride hexahydrate (MW = 203.3 g/mol) is required to make a 500 mL solution ata…

A: MW = 203.3 g/mol Concentration = 10 mmol/L Volume = 500 ml solution = 500/100 L = 0.5 L

Q: Give the equation for the complete titration of aspartic acid with a base, NaOH. At what pH, can you…

A: Amino acids contain ionizable groups and can be titrated. Titration if amino acid illustrates the…

Q: How do I solve this question:    If you have a sugar with a molecular weight of 309 g/mol, how many…

A: The question asks to find the weight (g) of solute/sugar needed for the preparation of a 248 mM…

Q: Calculate the pH of a mixture of 0.25 M acetic acid and 0.20 M sodium acetate. The pKa of acetic…

A: The Hasselbalch-Henderson equation is used to estimate the pH of a buffer solution. The numerical…

Q: For a weak acid with a pKa of 6.0, calculate the ratio of conjugate base to acid at a pH of 5.0

A: The Henderson-Hasselbalch equation helps to describe the derivation of pH as a measure of acidity in…

Q: Refer to the following titration curve below: 13 12 11 10 7 6 5 4 4 6 8 10 12 14 16 18 20 22 24 26…

A: Iso electric point: the pH at which the Amino acid exists in a zwitter ionic state us called iso…

Q: The solubility product of a metal hydroxide M(OH)2 is 8.65 × 10-6.  What is the molar solubility of…

A: Ionic molecules are formed by the loss and gain of electrons to form respective positive and…

Q: How many grams of glucose (C6H2O6 molecular mass =180daltons) would be present in one liter of a 1M…

A: The concentration of a solution is expressed in molarity. Molarity is defined as the number of moles…

Q: Describe how you would prepare a 500 ml of 0.35M Glycine pH2.2 from a 5M Glycine solution of pH 7.…

A: Ans- Given Molarity = 5M            Desired Molarity= 0.35 M            Desired Volume (V2) = 500ml…

Q: What would be the working stock concentration (in molarity) if you diluted 250 uL of a stock…

A: Molarity is defined as the number of moles dissolves in 1000 ml of the solution.

Q: s the pH of a 0.0001 M solution of hydrochloric

A: [H+]=0.0001=10-4 pH=-log[H]+ pH=4

Q: Please calculate the melting temperatures of oligomer A&B by the equation provided in the photo

A: Ans: Melting temperature: The temperature at which the oligomer or DNA double strands melts or…

Q: How many grams of KCl would you need to make 250 ml of a 0.5 M solutions? ________ g

A: To prepare 250 ml of a 0.5 M KCl solution, the molar mass of KCl should be determined.Molar mass of…

Q: What is the molarity of a solution with 100 g fructose dissolved in 0.7 L water?

A: Fructose is a carbohydrate or a sugar molecule and is a monosaccharide. It is found mostly in…

Q: The molar stability of mercury (II) sulfide is below. What is the Ksp ?

A: Mercury II sulfide or Mercury sulfide (HgS) . It is almost insoluble in water. But, it can be…

Q: How many moles of KBr are there in 89.5 mL of 0.150 M KBr?

A: Molarity can be stated as, it is the number of moles of solute which is dissolved per liter (L) in…

Q: Balance the following (fictional) chemical equations by supplying the correct coefficient. Do not…

A: A section of chemistry that deals with the relationship between the reactant and products involved…

Q: How many grams of glucose would you have to weigh out to make 500mls of a 0.5 M solution of glucose?

A: Molarity can be defined as the number of moles of solute per 1000 ml of the solution.  Now,…

Q: When ionic compound AB (12.0 g) is dissolved in water, it absorbs 2.00 kj of heat. The compound has…

A: Given : AB dissolved in water, it absorbs 2 kJ heat. AB heat of hydration , Delta Hhydration = -670…

Q: The pH of a solution containing 20 mL of 0.120 N NaOH and 35 mL of 0.120 N NaOH is 1.49. True or…

A: Given Values: 20 ml of 0.12 M NaOH and 35 ml of 0.12 M NaOH are mixed together. The pH of the mixed…

Q: You need to nake 100mL of a 0.2 molar sucrose (C12H22O11) solution. How much sugar do you need to…

A: Molarity in simple terms can be defined as the amount of any substance present in a certain volume…

Q: A slice of pizza has 500 kcal. If we could burn the pizza and use all the heat to warm a 50-L…

A: Specific heat is a physical property of substance. It is the amount of heat needed per unit mass to…

Q: What is the change in entropy when 150 mL of cold (278 K) water is added to 150 mL of near-boiling…

A: According to thermodynamics, entropy is the amount of unavailable energy in a system. It is denoted…

Q: Explain how you would prepare 100ml of 10mMProline solution given that the molecular mass of…

A: Proline : It is an amino acid, plays an important role in plants. It protects the plants from…

Q: A solution is made by dissolving 0.641 mol of nonelectrolyte solute in 763 g of benzene. Calculate…

A: Nonelectrolyte solute = 0.641 mol Benzene =763 g

Q: For ferrocene (C10H10Fe) the enthalpy of sublimation is 73.2 kJ/mol and the entropy of sublimation…

A: Given Enthalpy of sublimation = 73.2 kJ/ mol Entropy of sublimation =243 J/ mol K To calculate: The…

Q: 5. A 0.01 M solution of HCI will not hurt your skin, yet a 0.1 M solution of HCI will leave a…

A: Hydrochloric acid is a colorless and odorless solution of hydrogen chloride and water with a…

Q: Calculate the boiling points of a 8.50 m aqueous solution of fructose. Boiling point constants can…

A: Formula for boiling point: ∆Tb=Kbmwhere,∆Tb= change in boiling pointkb= boiling point constantm=…