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
- 12:06 A * A * ll 68%i Zoom v Leave • REC Breakout Rooms GROUP WORK An iron ore was analyzed by dissolving a 1.1324 g sample in concentrated HCI. The resulting solution was diluted with water and the iron (III) was precipitated as the hydrous oxide Fe,O3.xH,O by the addition of NH3. After filtration and washing, the residue was ignited at a high temperature to give 0.5394 g of pure Fe,03 (159.69g/mol). Calculate (a) % Fe (55.847g/mol) and (b) % Fe,04(231.54g/mol) in the sample. •. 28 Unmute Start Video Share Participants More IIThe compound diborane (B2H6) was at one time considered for use as a rocket fuel. Its combustion reaction is B2H6(g) + 3 O2(l) → 2 HBO2(g) + 2 H2O(l) The fact that HBO2, a reactive compound, was produced rather than the relatively inert B2O3 was a factor in the discontinuation of the investigation of the diborane as a fuel. What mass of liquid oxygen (LOX) would be needed to burn 234.4 g of B2H6? Answer in units of g.= 14 15 16 17 18 19 20 21 22 23 24 25 26 A chemical engineer must calculate the maximum safe operating temperature of a high-pressure gas reaction vessel. The vessel is a stainless-steel cylinder that measures 39.0 cm wide and 46.8 cm high. The maximum safe pressure inside the vessel has been measured to be 8.50 MPa. For a certain reaction the vessel may contain up to 5.53 kg of boron trifluoride gas. Calculate the maximum safe operating temperature the engineer should dlo recommend for this reaction. Write your answer in degrees Celsius. Round your answer to 3 significant digits. temperature: || °C
- In any manufacturing process, reaction monitoring ensures that a chemical reaction proceeds as expected. Table 1 shows the monitoring data for the formation of chlorohexane, collected using a technique called gas chromatography. Note that the concentrations of the chlorohexane solutions are given in millimoles per litre (mmol l–1). The abbreviation mM (millimolar) is frequently used. Plot a graph of the data in Table 1. The graph should be drawn on graph paper or use fine grid if it’s drawn on Excel. Elapsed Time/Hours Concentration of Chlorohexane/mM 0 0 2 40 4 65 6 80 8 90 10 95 12 99The researcher extracts a sample of well water and prepares it for TXRF analysis with a 10.00 mg/L V internal standard, like the calibration standards. The result produces SCa = 69297.81 and SV = 13481.2.Determine the concentration of Ca.The progress of the reaction between Iodine ions and potassium iodate(V) can be followed by withstanding samples of the reaction mixture at various times, quenching and then titrating with standard thiosulphate solution. The reaction equation is: I(aq) + IO3(aq) + 6H+(aq) + 4e ➡ I2(aq) + 3H2O(l) In one such experiment the following data were obtained. (see figure below) Determine the order of the reaction with respect to I(aq) and IO3(aq) ions Write the rate expression for the reaction.
- When the high-temperature superconductor yttrium barium copper oxide is heated under flowing H,, the solid remaining at 1000°C is a mixture of Y,O,, BaO, and Cu. The starting material has the formula YBa, Cu,0,-. in which the oxygen stoichiometry varies between 7 and 6.5 (x = 0 to 0.5). 1000°C 1 YBa, Cu,O, -(s) + (3.5 – x)H,(g) FM-666.19–16.00x Y,0, (s) + 2 BaO(s) + 3 Cu(s) +(3.5 – x)H,O(g) YBa, Cu,O35 Thermogravimetric analysis. When 33.792 mg of YBa, Cu, O,, were subjected to this analysis, 31.133 mg of solid remained after heating to 1000°C. Find the value of x in YBa,Cu,O, _r- x = Propagation of error. Suppose that the uncertainty in each mass is ±0.002 mg. Find the uncertainty in the value of x.POTASSIUM PERMANGANATE AND SODIUM HYDROXIDE Repeat procedure 3 using 6M sodium hydroxide instead of 6M sulfuric acid. Allow the solution to stand for about 15 minutes and write an observation of any changes. Observations: Balanced chemical equation: 2KMnO 4(aq) + 3NaHSO 3(aq) + NaOH (aq) → 2H2O(l) + K2SO 4(aq) + 2MnO 2(s) + 2Na2SO 4(aq) What substance is responsible for the color change?hello, i sent this question before but the answer you rpovided for both wasnt right and i couldnt undertstand how you got the answer. can you please show me a handwritten solution for better understanding. 1a) The decomposition of ethanol at some constant temperature (above 500°C), over a copper surface, C2H5OH(g) CH3CHO(g) + H2(g) was studied by monitoring the total pressure with time.The following data were obtained: t (s) Ptotal (torr) 0 120 45 131 139 154 233 177 376 212 380 213 What will be the total pressure at t = 462 s? 1b) What is the rate constant (k)?(Include appropriate units.)
- A powdered crude sample of Na2CO3 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?The air in a recently used classroom 9m x 7m x 9m tested 0.12% carbon dioxide. How many cubic meters of fresh air must be admitted per minute in order that 10 minutes later it shall contain not over 0.06% carbon dioxide. Fresh air contains 0.04% carbon dioxide. Assumeimmediate mixing of fresh with stale air. (A) 14 (B) 11 (C) 15 (D) 19 (E) 17Unit 7A: RA--Chemical Reactions and Stoichiometry 15/20 answered Close Homework . Due in 4 hours Molten iron and carbon dioxide gas are products in the industrial iron making process which passes carbon monoxide through molten iron ore, Fe203, at 1500°C. Write a balanced chemical equation for the production of iron. Chem 7 8 9 H 4 6 1 2 3 mol y g mol-1 DI + || SHOW