What is the mole fraction of the components of a solution containing 18g H2S0 in 75g of liquid water? Select the correct response: XH2504= 0.01; XH20= 0.99 O XH2504 0.04, X-20= 0.96 OXH2504= 0.96, XH20= 0.04 XH2504= 0.08, XH20= 0.92
Q: 1-What is the pH of a 0.100 M solution of sodium acetate? K, = 5.65 x 10-10. 2-What is the pH of a 0...
A:
Q: lonic bonds is formed as a result of sharing electrons False O true
A:
Q: Calculate the energy for each level of the H and He". HYDROGEN Orbit Energy N = 1 n=2 n=3 n = 4 N =5...
A: Only a photon with an energy can be absorbed or emitted when the electron jumps between the n=1 and ...
Q: 10-2. From the data shown in Fig. 10.6, calculate the net attractive force produced by the two elect...
A: We can use Coulomb's law to find the net attractive force between the two electrons in neutral H2 mo...
Q: Consider an ideal gas enclosed in a 1.00 L container at an internal pressure of 24.0 atm. Calculate...
A: Whenever gas expands against an external pressure, work done is negative because energy gets transfe...
Q: Make a Haiku on the importance of carbon element
A:
Q: Describe how you would pick the appropriate chemicals to use to prepare a butter.
A: Buffer is defined as a solution which does not alter it's pH after addition of a small amount of str...
Q: Balance the Redox Reaction. Always include the state of each species: (s), (l), (g), or (aq). O2(g)...
A: Given reaction : O2(g) + Sb(s) → H2O2(l) + SbO2(aq)
Q: 3. Consider the structure of N,N-dimethylformamide (DMF, seen below). We might expect the two methyl...
A:
Q: In the preparation of 60 mL Magnesium citrate in the laboratory, you are required to:calculate for t...
A: Given, Mass of (MgCO3)4 .Mg(OH)2 .5H2O = 2.57 g Molar mass of (MgCO3)4 .Mg(OH)2 .5H2O = 485.65 g/m...
Q: Given the balanced equation: 2 LİOH + CO, 2 Li¿CO; + H,O, how much H;O will be produced if 25.4 g LI...
A: Given :- 2LiOH + CO2 →Li2CO3 + H2O mass of LiOH = 25.4 g mass of CO2 = 64.8 g To calculate :- m...
Q: CH3 + CH2C- NH2
A:
Q: Write the name of the product that results when 2-ethyl-4-propyloctanal is treated with Pt and hydro...
A:
Q: ieous ethanol solutions are prepared by mixing measured weights of assayed ethanol and organic-free ...
A: To Solve this problem first we have to calculate the number of moles of ethanol then we will calcula...
Q: Given the volume of 0.2000 M NAOH used determine the concentration of 10.00 ml sample each from aqua...
A: Given, Volume of NaOH for Aq layer = 12.55 mL Volume of NaOH for Or layer = 15.27 mL Concentration o...
Q: Describe how you would pick the appropriate chemicals to use to prepare a burtc
A: Buffer solution: The solution that resists the change in pH is known as a buffer solution. The buffe...
Q: The following IR spectrum corresponds to which compound? Explain. Wavenumber, Tranamittance, %
A:
Q: 8 please write the functional group and IUPAC name. you can see example on the pic
A: The naming of an organic compound can be done with help of rules of international union of pure and ...
Q: Describe how you would pick the appropriate chemicals to use to prepare a buffer.
A: Buffers are compounds or mixtures of compounds that by their presence in the solution resist changes...
Q: What is the formula for phosphorus pentachloride? Hint: for CO2, write CO_2
A:
Q: Calculate the pH of a solution resulting from dissolving 23. g of Ba(OH)2 in enough water to make 15...
A:
Q: Give the major possible product of an SN2 reaction of the compound above with sodium cyanide, NaCN. ...
A: Given molecule is : (a). Give the major possible product of an SN2 reaction of the compound above...
Q: Describe equilibrium constants with words and equations. A reaction that yields mostly products has ...
A: Equilibrium constant tells about the relationship between the amount of product and reactant present...
Q: What is the role of sodium and chloride ions in this experiment
A: A spectator ion is an ion that exists as a reactant and a product in a chemical equation. and it doe...
Q: Which of the following series of reagents could be used to carry out the conversion shown? NO2 Br O ...
A: Conversion of benzene into m-nitrobromobenzene.
Q: Which of the following is TRUE about the factors affecting solubility? Select the correct response O...
A: Since you have posted multiple questions, we will answer the first one for you. Kindly post the othe...
Q: The following IR spectrum corresponds to which compound? Explain. Wavenmher cm Transmittance, %
A: Given IR data : A broad peak at 3330 cm-1 belongs to O-H Stretch of an alcohol. A sharp peak just ...
Q: Please answer both parts of this question What is the (final) product of a. a primary alcohol and c...
A: Given: reaction of alcohols with chromic acid i.e. H2CrO4
Q: Zinc reacts with copper sulfate in a single replacement reaction as follows Zn (s) + C...
A: Given:- Zn (s) +CuSO4 (aq)→ZnSO4 (aq) + Cu(s) mass of Zn = 50 g Actual yield of Cu = 42.50 % To...
Q: A system does 551 kJ of work and loses 216 kJ of heat to the surroundings. What is the change in in...
A: Given Data : 1. Work done (W) = -551KJ 2. Heat to the surroundings (Q) = -216 KJ Work done by the sy...
Q: Br,(g)= 2Br(g) the equilibrium constant, K, is 1.10 x 103 concentrations of Br if the initial and eq...
A:
Q: O 8 https://online.vitalsource.com/reader/books/9781792484490/pageid/77 4. In a titration of KOH sol...
A: Given, Potassium hydrogen phthalate (KHP) Chemical formula of Potassium hydrogen phthalate : C8H5KO4...
Q: Inorganic chemistry is the chemistry .of the compounds of carbon False true O Name of this structure...
A: inorganic chemistry is the branch of chemistry which deals with inorganic compounds. While organic c...
Q: Which of the following substances is a nonelectrolyte? Select the correct response. O CH4, which is ...
A: Electrolytes are the substances which dissociate into ions in aqueous solution.
Q: Children's toys and jewelry were assessed for their contamination by potentially toxic élements (PTE...
A:
Q: The following IR spectrum corresponds to which compound? Explain. 1000 Wavenumber, cm Transmittance,...
A:
Q: Consider the reversible reaction (written in terms of generic molecules A, B, and C): 2A(g) + B(g) ⇌...
A: The reaction given is, => 2A(g) + B(g) ⇌ C(g)
Q: Q5) Choose two of the following branches:- 1-What is the pH of a 0.100 M solution of sodium acetate?...
A:
Q: An analyte has an Rf value of 0. 75 What does that indicate about the solubility of the analyte in t...
A: Chromatography is a technique of separation Here we are required to indicate the solubility of the ...
Q: Provide the correct IUPAC name for the skeletal (line-bond) structure shown here. 4- 3- 2,4,4- 2,4- ...
A:
Q: Activity 2: Is it Acidic or Basic? Directions: Complete the table by identifying whether the sample ...
A:
Q: When determining the equilibrium concentrations for the reaction [A][B] [AB] AB(g) A(g)+B(g) K. = a ...
A: The equilibrium reaction given is,
Q: Suppose that 10.00 mL of 0.0100 M IO3- solution requires 11.43 mL of the thiosulfate solution to be ...
A:
Q: /hat is the 'H NMR splitting pattern of the indicated hydroger
A:
Q: the general molecular formula for a cyclic alkene must be CnH2n False O true
A:
Q: If 25.0 mL of 0.18 M methylamine (CH3NH2) (K = 4.4 x 10) is titrated with 0.048 L of 0.70 M HBr, the...
A: Since you have posted multiple questions, as per our company guidelines we are supposed to answer on...
Q: What is the structural formula of 4-bromo-2-chloro-3-ethyl-n-pentanal?
A: Given- 4-bromo-2-chloro-3-ethyl-n-pentanal
Q: Calculate the pH at the halfway point and at the equivalence point for each of the following titrati...
A: Answer: For the first two solutions, pH at the halfway point will be the pH of the buffer solution a...
Q: 2. A student doing this experiment was puzzled by the fact that while each of the individual solutio...
A: Hazardous Solution contains toxic ,hazardous chemicals that are harmful for nature.
Q: Q4) Use each of the terms below just once to complete the passage. Immiscible liquid soluble solutio...
A: Immiscible means which do not mix while miscible means which mixes. Solution is prepared by mixing ...
Step by step
Solved in 6 steps with 1 images
- 5-7: A 10.34 molal aqueous nitric acid solution was prepared. (Density of nitric acid = 1.51 g/mL, density of water = 1.0 g/mL, and the MW of nitric acid = 63 g/mol)5. How many grams of HNO3 were used to prepare the solution? 6. What is the Molarity of the solution? 7. What is the concentration (%v/v) of the solution? 8-10: An aqueous solution of HNO3 was prepared having a molal concentration of 6.29. (Atomic weights: H=1 amu, N=14 amu, O=16 amu, density of H2O = 1g/mL, density of HNO3 = 1.51 g/ml)8. How many grams of HNO3 was used to prepare the said concentration? 9. What is the molarity of the aqueous HNO3 solution? 10. The % v/v of the prepared HNO3 solution is __________.When 1 mole of water is added to an infinitely large amount of an aqueous methanol solution having a mole fraction of methanol of .40, the volume of the solution increased by 17.35cm^3 and 25C. When 1 mole of methanol is added to such a solution, the volume increases by 39.01 cm^3. Calculate the volume of a solution containing .40 mole of methanol and .60 mole of water. What is the volume of .6 mole of water plus the volume of .4 mole of methanol before they are mixed? The densities of water and methanol at 25C are .998g/cm^3 and .791g/cm^3 respectivley.1. What is the mole fraction of solute and solvent in a solution prepared by dissolving 98 g. of H₂SO4 in 162 g. of H₂O? 2. What is the mole fraction of ethyl alcohol (C₂H5OH) in an aqueous solution of ethyl alcohol that is 39% ethyl alcohol by mass?
- 5-7: A 10.34 molal aqueous nitric acid solution was prepared. (Density of nitric acid = 1.51 g/mL, density of water = 1.0 g/mL, and the MW of nitric acid = 63 g/mol) How many grams of HNO3 were used to prepare the solution? 651.42 g HNO3 What is the Molarity of the solution? 15.71 M 7. What is the concentration (%v/v) of the solution? 3.63%A solution is prepared by dissolving iodine, I2, in carbon tetrachloride, CCl4, at 25 °C. What is the mole fractions of the solute for a solute of molality 0.100 mol kg−1? R = 8.3145 J/Kmol. Mole fraction of solute = 0.015 Mole fraction of solvent = 0.985 (c) change of chemical potential (solvent) = __________ J/mol. 3 sig. fig.The solubility of O2 in water is approximatly 0.00334 g L^-1 of water whe the teperature is 25 °C and the partial pressure of gaseous oxygen is 760 torr. The oxygen gas above the water is replaced by air at the same temperature and pressure, in which the mole fraction of oxygen is 0.287. What will the solubiliy of oxygen in water be under these new conditions? Report answer in correct number of sig figs.
- The weight fraction of methanol in an aqueous solution is 0.64. The mole fraction of methanol (x) satisfies a. X < 0.5 b. 0.5 < XM < 0.64 c. xu = 0.5 d. Xu ~ 0.5In class, we derived the expression:ln XA =(ΔvH/R) ((1/T)-(1/T°))where A represents the solvent (and B would represent the solute, such that XA + XB = 1).Using the approximations given below, derive the expression:∆Tb = XB (RT°2/ΔvH)where ∆Tb is the change in boiling point between the solution and the pure liquid, T − T°.Approximations:ln(1 − X) ≈ −XTT° ≈ T°2Note: this derived expression is often simplified in General Chemistry as ∆Tb = Kbm where Kb is the boiling point elevation constant, and m is the molality.The osmotic pressure of an aqueous solution at 300K is 250.0 kPa. (1)Calculate the molarity of solute (impurity) M (mol/m3)=[M]; (2) Calculate the molality of solute (impurity) b (mol/kg)=[b]; Calculate the freezing point of the solution T(oC)=[T]. Please pay attention to the sign. The cryoscopic constant Kf=1.86Kkgmol-1
- In the determination of molar mass of an unknown substance by ebullioscopic constant, 30 mL of acetone (C3H6O) was placed in a test tube with thermometer and glass tubing and subjected to water bath. Upon boiling, the temperature reads 56 deg C. For the boiling point of unknown-acetone solution, you prepared the solution by mixing 1.60 g of unknown solute in the 30 mL acetone and subjected it again to water bath. The boiling temperature of the solution is 56.68 deg C. The density of acetone = 0.9849 g/mL and the Kb of acetone = 1.67 degC/kgIn the determination of molar mass of an unknown substance by ebullioscopic constant, 30 mL of acetone (C3H6O) was placed in a test tube with thermometer and glass tubing and subjected to water bath. Upon boiling, the temperature reads 56 deg C. For the boiling point of unknown-acetone solution, you prepared the solution by mixing 1.60 g of unknown solute in the 30 mL acetone and subjected it again to water bath. The boiling temperature of the solution is 56.68 deg C. The density of acetone = 0.9849 g/mL and the Kb of acetone = 1.67 degC/kg What is the value for delta Tb or the change in boiling temperature (in degrees Celsius)?In the determination of molar mass of an unknown substance by ebullioscopic constant, 30 mL of acetone (C3H6O) was placed in a test tube with thermometer and glass tubing and subjected to water bath. Upon boiling, the temperature reads 56 deg C. For the boiling point of unknown-acetone solution, you prepared the solution by mixing 1.60 g of unknown solute in the 30 mL acetone and subjected it again to water bath. The boiling temperature of the solution is 56.68 deg C. The density of acetone = 0.9849 g/mL and the Kb of acetone = 1.67 degC/kg What is the value for delta Tb or the change in boiling temperature (in degrees Celsius)? Final answer must be rounded off to 2 decimal places, and shall NOT have any unit.