A fermenter was filled with 10L of 0.6 mol/L sodium sulfite solution containing 0.003M Cu2+ ion and the air sparger was turned on. After exactly 10 minutes, the airflow was stopped and a 5 mL sample was taken and titrated. The concentration of sodium sulfite in the sample was found to be 0.2 M. Calculate the oxygen uptake rate.
Q: 21. Propane (C3H8) reacts with oxygen gas to form carbon dioxide and water. How many grams of oxygen...
A: The balanced chemical equation, C3H8 + 5O2 ==> 3CO2 + 4H2O Given, 3.8 moles of propane.
Q: 2. Twenty-five mL of 0.100 M lactic acid (K = 1.4 x 10-) is titrated with 0.097 M KOH. a) What is th...
A:
Q: Name the organic compound below A. 2,2,4-trimethyl-3-hexene B. 2,3,3-trimethyl-2-hexene C. 2,2,4-t...
A:
Q: 2. Twenty-five mL of 0.100M lactic acid (K = 1.4 x 104) is titrated with 0.097 M KOH. a) What is the...
A: Soln
Q: Nitrogen monoxide, NO, reacts with hydrogen to give nitrous oxide, N20, and water. 2NO(g) + H2 (g) →...
A:
Q: Identify the false statement with regard to electromagnetic radiation and the electromagnetic spectr...
A:
Q: [H30*] (M) [ОН] (М) pOH pH Acidic or Basic а. 0.0059 b. 12.00
A:
Q: Twenty-five mL of 0.100 M lactic acid (K, = 1.4 x 104) is titrated with 0.097 M KOH. a) What is the ...
A:
Q: Draw the major organic product(s) of the reaction shown. Multiple products may be drawn in one box: ...
A: Organic reactions are those in which organic compounds react with each other to form products.
Q: Assuming the Debye Huckel Limiting Law applies, At 25°C, estimate the mean activity coeficient, of 2...
A:
Q: What is the initial rate of the reaction in Experiment 4? Initial rate mol/(L · s)
A: Well, first step for the calculation is to determine the rate equation from the given experiments. F...
Q: istruction: Draw the structure (structural formula) of each compound given. 6-methyl-3-cyclopropylde...
A: structural formula is identified location of bonds in molecules
Q: Which of the following has 61 neutrons, 47 protons, and 46 electrons? O 108 Ag+1 108Cd*1 B0Pm O 208P...
A:
Q: R Spectrum and analysis of peaks and Possible causes of error
A: A question based on IR spectrum that is to be accomplished.
Q: Mass of aluminum (g): 0.25g Mass of alum crystals (g): 0.27g 1. Using your starting mass of alum...
A: Answer: To calculate theoretical yield, we will use the given molar ratio and by equating the ratio ...
Q: Suppose a student places a beaker on his balance and does not tare it. Then, he adds three substance...
A: The data given is, Before After distilled water 57.160 g 70.990 g sodium acetate 70.990 ...
Q: At 40.°C, 2.0 mol of hydrogen and 2.00 mol bromine are put in a 2.0L flask and allowed to react acco...
A:
Q: 2. Calculate the percentage by mass of oxygen in the following compounds a. NO2 b. CH;COOCH3
A: Since you have posted question with multiple subparts as per guidelines we can answer only three per...
Q: percent abundance
A:
Q: Difference between gravimetry and volumetric methods
A: Introduction : Titration is a process in which chemical analysis of the quantity of some consistent...
Q: what medium will lidocaine be absorbed?
A: Since polar solvent dissolves polar solutes and non-polar solvent dissolves non-polar solutes.
Q: Aqueous solutions of silver nitrate and sodium phosphate are mixed together, forming solid silver ph...
A: Soln
Q: 1) Give the IUPAC names for the following compounds: (a) (b) CI (c) (d) CH3 . CH2CH3 H,
A: The IUPAC name of the compound can be written on the basis of the main carbon chain, functional grou...
Q: Mesitylene, a hydrocarbon that occurs in a small amounts in crude oil has an empirical formula of C3...
A:
Q: Ethyl alcohol has a density of 0.789 g/cm3. What is the mass in pounds of 452 cm3 of ethyl alcohol? ...
A:
Q: Directions: Explain your answer comprehensively. Limit your justification in 3-5 sentences. 1. What ...
A: Every substance possess certain amount of energy in some form or the other. In a system, when a work...
Q: From the following chemical equation: Cl2 F+ G+ H FeCl3 i) Draw the structure of F, G and H. ii) Bas...
A:
Q: avord Cylindento obtain avelume 3 In Part B, did all of your mass measurements have the same number ...
A: Measurement of any value or a parameter is an important aspect in the scientific study. The measured...
Q: D. Air pressure is less because the air is moving faster. 41. Pressure is defined as the magnitude o...
A: 41) Pressure is defined as the magnitude of the force acting perpendicular per unit area of thes sur...
Q: State whether you would want to use a fractional or simple distillation for each of the cases below....
A: A). We use fractional distillation when the difference between boiling points of components is less ...
Q: A 2.0 g of MgCO3 was dissolved and diluted to exactly 500-mL volumetric flask. If 50-mL aliquot was...
A: Mass of MgCO3 = 2g Mol. Mass of MgCO3 = 84g/mol Volume of dilution = 500ml Volume of aliquot = 50ml ...
Q: 1. Complete the table Isotope Mass (amu) Relative Abundance (%) Silicon- 28 27.97693 92.21 Silicon- ...
A: For this problem We have to complete the given table based on abundance of isotopes.
Q: If 2.40 moles of H₂ and 1.55 moles of O₂ react how many moles of H₂O can be produced in the reaction...
A:
Q: What is the concentration of hydroxide ions with a pH of 4.76?
A: Given : pH = 4.76
Q: IR Spectrum and analysis of peaks Possible causes of error Discuss the mechanism and why a racemic...
A: IR referred to infrared spectroscopy and it is the characteristic of functional. It falls under the ...
Q: kindly help me with one Make a complete schematic diagram for the precipitation, separation, and i...
A: The schematic representation is as follows:
Q: 1. Provide acceptable IUPAC names for the following compounds. D- stereochemistry if needed. CI- CI ...
A:
Q: Complete the table of neutral ionic compunds with formulas and names for each cation-anion pair. Ans...
A: Ionic compound Ionic compound composed of cation which is positively charged (+charge) and an anion...
Q: What are the names of the following compounds? a. HNO2 (aq) Name: b. SO2 Name: с. Cu(Н, РОд)2 Name: ...
A:
Q: identify the name tor each category of organization found in carbohydrates and include an example fo...
A: Carbohydrates are most common elements In the earth. Monomers of carbohydrates are simple sugar and ...
Q: D. Solvent Extraction Samples Upper phase Lower phase Oil + Water Kerosene + Oil
A: Solvent extraction or liquid-liquid extraction is a technique in which the mixtures of compounds are...
Q: 1. Mg Br 2. Br
A: The reaction given is,
Q: How many molecules of C2H6 are there in 21.4 g of C2H6?
A: Given that, 21.4 g of ethane, C2H6. We have to calculate the number of molecules in it.
Q: When 50.7 g of a certain molecular compound x are dissolved in 100 g of formamide (NH, COH), the fre...
A:
Q: What would you multiply "moles of tin" by to get the units "atoms of tin"? (number) (unit) moles Sn ...
A:
Q: conc. H2SO4 180 °C HO
A: The dehydration reaction of alcohols to generate an alkene. Dehydration means removal of water. De...
Q: From the following protected amino acids, write the reaction equation to synthesize a tripeptide of ...
A: The detailed answer of the given question is done on the white sheets of paper attached below. Here...
Q: A student has a stock solution of 30.0% w/v H2O2 (hydrogen peroxide). Describe how the student shoul...
A:
Q: HAVENLMBERS 3H 2H 上 2H 2H 20.09.5 9.0 B.5 8.b 7.5 PPM Proton NMR 4.0 3.5 3.0 2.5 2.0 1.5 PPM aromali...
A: 1HNmr values -
Q: The following initial rate data are for the reaction of hypochlorite ion with iodide ion in 1 M aque...
A:
Step by step
Solved in 2 steps
- a. Ethanol vapours were allowed to completely fill a large jug with a volume of 15.5L. The ethanol was burned yielding 5.5mL of pure liquid water in the bottom of the jug at the end of the reaction. C2H5OH + 3 O2 ? 2 CO2 + 3 H20 If the room temperature was 21.5 oC and the pressure was 0.996atm, calculate the percentage yield of the water gathered in the jug. b. A 10.0 mL sample of sulfuric acid with an unknown concentration was titrated with 3.5 x 10-4 mol/L NaOH. If 20.4mL of the sodium hydroxide was required to completely neutralize the acid, determine the concentration of the sulfuric acid in the sample. Then, determine the original pH of the sulfuric acid sampleA student performed the experiment described in this module, using 7.00 mL of a 1.8% H2O2 solution with a density of 1.01 g mL-1. The water temperature was 20 ° C, and the barometric pressure in the laboratory was 30.02 in. Hg. After the student immersed the yeast in the peroxide solution, she collected 45.1 mL of O2. (11) Calculate the percent error for the experiment.1)Please express the normal salt (NaCl) concentration in body fluid into molarity (mM).2) Commercial fuming Sulphuric acid (Oleum-H2S2O6) is 99.9%. solution. Please convert it into molarity.3) Find out the Volume (dm3) of product (gas) at RTP when 0.58 M, 150 mL NaOH (aq.) reacts with 350 mL, 0.25 NH4Cl.4) The above reaction has the product Ammonia, which when dissolved in 650 mL ethanol makes an alkaline ethanolic solution. Find its molarity (M) 5) Calculate the adult dose as per the BW of the baby. (Child dose-50 mg and the BW of the baby is 48 lb (British pound) (1lb=0.453 Kg)
- The % purity of a powdered crude sample of Na^2CO^3 containing only inert impurities is to be determined by reacting 225.0 mg of the crude sample to 10.0 mL of 3.00 M HCl solution, and bubbling the resulting CO2(g) product in water that is at exactly 29 °C. After the reaction has completed, the level of the liquid inside the eudiometer rests 4.30 cm above the water level in the beaker. The graduation on the eudiometer indicates that the trapped gas is 44.37 mL. The experiment was done under a barometric pressure of 755.2 torr. Write the balanced chemical equation of the reaction in your solutions sheet. What is the sum of all the coefficients of the balanced chemical equation? Determine the pressure of the trapped gas inside the eudiometer in mmHg. Determine the partial pressure of the collected CO^2 in mm Hg. How many millimoles of CO^2 was collected? What is the % purity of the sample to the nearest whole number?The % purity of a powdered crude sample of Na^2CO^3 containing only inert impurities is to be determined by reacting 225.0 mg of the crude sample to 10.0 mL of 3.00 M HCl solution, and bubbling the resulting CO2(g) product in water that is at exactly 29 °C. After the reaction has completed, the level of the liquid inside the eudiometer rests 4.30 cm above the water level in the beaker. The graduation on the eudiometer indicates that the trapped gas is 44.37 mL. The experiment was done under a barometric pressure of 755.2 torr. What is the % purity of the sample to the nearest whole number?A manometer was connected to a bulb containing nitrogen under slight pressure. The gas was allowed to escape through a small pinhole, and the time for the manometer reading to drop from 65.1 cm to 42.1 cm was 18.5 s. When the experiment was repeated using a fluorocarbon gas, the same fall took place in 82.3 s. Calculate the molar mass of the fluorocarbon.
- The aluminum in a 1.200 g sample of impure ammonium aluminum sulfate was precipitated with aqueous ammonia as the hydrous Al(OH)3.xH2O. The precipitate was filtered and ignited at 10000C to give anhydrous Al2O3 which weighed 0.1798 g. Express the result of this analysis in terms of % Al2O3.A student performed the experiment described in this module, using 7.00 mL of a 1.8% H2O2 solution with a density of 1.01 g mL-1. The water temperature was 20 ° C, and the barometric pressure in the laboratory was 30.02 in. Hg. After the student immersed the yeast in the peroxide solution, she collected 45.1 mL of O2. (11) Calculate the percent error for the experiment. What is the observed molar volume?Tetraethyl lead, Pb(C₂H5)4, in a 25.00 mL sample of jet fuel was shaken with 15.00 mL of 0.02095 M I₂. The reaction is: Pb(C₂H5)4 + I2 = Pb(C₂H5)3I + C₂H₂l After the reaction was complete, the unused I2 was titrated with 6.09 mL of 0.03465 M Na₂S₂O3. Calculate the %w/v, in kg/L, of Pb(C₂H5)4 (MM=323.4) contained in the sample. 2.700 x 10-5 % 2.700 x 10-3 % 4.200 x 10-7 % 4.200 x 10-3 %
- A 10.0 mL sample of CO2 is collected by the downward displacement of water at 23.0°C and a room pressure of 100.5 kPa. What is the volume of dry CO2 at 0.00°C and 90.0 kPa?(a) A commercial 737 jet transporting 143 passengers and 5 crew members from Kansas City (MCI) to Baltimore (BWI) burned 11,800 lb (about 1700 gallons) of Jet A fuel en route. Jet A fuel is kerosine based, consisting primarily of CnH2n+2 hydrocarbons, with n =6 to 16, so the carbon:hydrogen ratio is close to 1:2. During this flight, how much CO2 was released into the atmosphere? Assume the combustion of the fuel was complete, so all the fuel was burned to form CO2 and H2O. Give both the mass of CO2 produced (in kg and in lbs) and the volume it would occupy at 298 K, 1 atm.(b) How much CO2 would be released into the atmosphere if those passengers and crew made the trip instead, in pairs, in hybrid cars at 40 miles per gallon. Assume the density of the gasoline is 0.75 kg L-1 and that carbon and hydrogen dominate the composition in a ratio of 1:2. The road trip is 1082 miles.Identify the effect of the condition on the parameter. Write increase, decrease, or no effect. And Explain. A. The actual concentration of the sodium hydroxide used in the calibration part of the experiment was lower than the stated value. [Ccal] B. The actual concentration of the sodium hydroxide used in the calibration part of the experiment was lower than the stated value. However, the NaOH solution used in the determination of ΔHrxn was of the correct concentration. [magnitude of ΔHrxn] C. A wet pipette was used to transfer 10.00 mL of 1M HNO3 in the determination of ΔHrxn. [magnitude of ΔHrxn]