Q: boiling point boiling point BPtof pure A vapour composition liquid composition Bpt of pure B OA 1.0B...
A:
Q: If calcium carbonate were slightly soluble in water, would your percent yield be higher, lower, or u...
A: What is the effect of solubility of calcium carbonate in water on percent yield.
Q: 9. Phosphorus reacts with oxygen gas to produce tetraphosphorus decoxide. 4 Po + 5 02(g) P,O 10(9) (...
A:
Q: "As the piston moves, the volume of the cylinder changes. The total volume of the air in the system ...
A: The volume always changes as the piston moves inward or out word ( expansion or compression )
Q: A 5.00 L tank at 3.7 "C is filed with 5.14 g of dinitrogen monoxide gas and 10.2 g of sulfur tetrafl...
A: Given mass of dinitrogen monoxide = 5.14 gram Given mass of sulphur tetrafluoride = 10.2 gram
Q: ndicate the products obtained in the reaction of propan-2-one with p-chlorobenzaldehyde with aqueou ...
A:
Q: Differential migration of the components is called a of the chromatogram.
A: Differential migration is the basis of chromatography. In a mobile phase, the solutes transit throug...
Q: D. If the treatment used HNO3 (p = 1.51 g/mL) as the solvent during dissolution, and the density of ...
A: molality is one of concentration term Here we are required to find the molality of Cd in 250 ml sol...
Q: Concentration of original aspirin solution (calculate M1 using M1V1=M2V2; M2 is the concentration of...
A: As per Beer-Lambert law:
Q: pler 14 - Kinetics Exercise 14.40 - Enhanced - with Feedback I Review | Constant MISSED THIS? Watch ...
A:
Q: The bombarded fragments forms a radical is represented by a mass charge ion ratio known as (_)? ...
A: In mass spectrometry, a molecule is ionised and fragments are created on the basis of m/z.
Q: Name the following molecules relative to their R or S configurations from the stereogenics centers.
A: Find the highest priority functional group. Determine and name the longest continuous carbon chain t...
Q: Estimate the average energy for valence electrons in a nitrogen N atom. Type your numeric answer and...
A: Answer: Given data- Formula is given to solve the equation. To find- Average energy for valence elec...
Q: CH, CH3 CH2-CH3 CH,-C-CH-CH-CH2 CH3 CH2-CH-CH, CH3 d) CH2-CH3 CH;-CEC-CEc-CH-CH-CEc-CH3 CI e) CH3 CH...
A: Since you have posted multiple subpart question, we will answer the 3 subparts (d,e,f) for you. Kin...
Q: Which mixture would produce a buffer solution when dissolved in 1.0 dm3 of water? А. 0.50 mol of CH3...
A:
Q: 1: A flask that can withstand an internal pressure of 2500 torr, but no more, is filled with a gas a...
A: As per our guidelines we can only solve first question. Please resubmit the other questions as next ...
Q: How many atoms of sodium are in three moles Na2S?
A: Number of moles of Na2S = 3 mol
Q: Enumerate one or two impurities that might affect the accuracy of prepared standard solutions of an ...
A:
Q: Predict the products of the following reactions on dec-5-yne: (a) H2, Lindlar catalyst (b) 2 equiv B...
A: Lindlar catalyst convert alkyne into cis alkene.
Q: The following data are for the decomposition of dinitrogen pentoxide in carbon tetrachloride solutio...
A: The half-life of a reaction can be defined as the time at which the concentration or the amount of t...
Q: Ethylene glycol (C₂H₆O₂) is used as an additive to the water in your automobile to lower its freezin...
A:
Q: An electrom is in df orbilal bawhat Possible for different quantermy com it have ? Values
A: An atomic orbital is the wave function of an electron, probability of finding an electron. An electr...
Q: 3. A 1.25-g sample of ammonium nitrate dissolves in water to make 35.0 mL of solution in an insulate...
A: Given, Mass of NH4NO3 = 1.25 g Volume of the solution = 35.0 mL Initial temperature= Ti = 24.6 0C...
Q: 6. What is the molarity of a solution containing 325 g of NaCl dissolved in 750 mL of solution?
A: given, mass of NaCl = 325 g molar mass of NaCl = 58.44 g/mol volume of solution = 750 mL = 0.750 L
Q: AH = - 1.2 kcal/mol; Kp = 16 nM %3D OH 1 HO AH = - 6.0 kcal/mol; N. Kp = = 76 nM OH 2 करले HOl. AH =...
A: Biological macromolecules are involve in many reaction. Any organic drug is designed to bind with it...
Q: Assignment of IR frequencies - assign the IR frequencies that best correspond to the actual frequenc...
A: To write the experimental frequencies.
Q: Consider the following standard reduction potentials: 2H+ + 2e → H2 Sn+2 + 2e → Sn Cd+2 + 2e¯ → E = ...
A:
Q: 0.0471 kg of biphenyl (C12H10) is dissolve in benzene (C6H6) to create a solution with a total volum...
A:
Q: The wavelength of maximum absorption of the complex FeSCN^(2+) has a molar absorptivity of 6.99 x 10...
A:
Q: Calculate the enthalpy of the formation of of PCl5.P4(g) + 10 Cl2(g) → 4 PCl5(s) Use enthalpies ...
A:
Q: A HF/NaF buffer is prepared. NaOH is added to the buffer. Which species is consumed as a result of t...
A: When a HF/NaF buffer is prepared and NaOH is added to the buffer then, The hydroxide ions are consum...
Q: Label the reaction profiles below as exothermic or endothermic and use them to calculate the activat...
A:
Q: Which of the following correctly describes a key step of the reaction shown in the box? 1. EEONA 2 2...
A: To identify the key step detail mechanistic pathway is given below
Q: using calomel electrode containing 1M kcl as a reference electode. and using two stock solution K3[F...
A: z in the nernst equation is the symbol for the change in number of electrons or the number of elect...
Q: NH, a)
A: This is a multi step synthesis reaction . Detail mechanistic pathway is given below
Q: for a species to be analyzed using the spectrophotometric method? n between the reactants must produ...
A: In spectrophotometeric method the species should absorb UV/ visible light and the electron is excit...
Q: Tution( . KNO3 With H2 d Tris with HCI) in 67' lorimetric ermometer.
A:
Q: Find the M, m, and N when 5.40 grams of (NH4)2SO4 is dissolved in 950.0mL of water.
A: Given:- Mass of (NH4)2SO4 is 5.40g Volume of water is 950.0mL We have to calculate M,m and N
Q: Given: 10 g of o-hydroxybenzoic acid (density: 1.44 g/mL, MW: 138.2) 20 mL wood alcohol (density = 0...
A: Here 10 gram of o-hydroxybenzoic acid react with 20ml wood alcohol (CH3OH) of density 0.792 g/ml . T...
Q: The volume of the solution inside a container is constant as the time approaches infinity. True or ...
A:
Q: The minimum-boiling azeotrope boils off after the lower boiling point component. Select the correct ...
A: Solutions are made up of solute and solvent. In solution, solute is present in small amount and solv...
Q: Create your scale on the x and y axes. Estimate the boiling point of the mixture which is composed ...
A: Since no temperature range is mentioned in the given diagram hence boiling point can not be estimate...
Q: Normality of H2$O4 was determined by titrating 150.00 mL of the solution against a known NaOH soluti...
A:
Q: Indicate the products obtained in the reaction of 5-nitro-2-heptanone with 1 mol of phenyl magnesium...
A:
Q: Calculate the pH of a 1L aqueous solution that is0.14 M in HF and 0.19 M in NaF after 0.013 mol of g...
A: The solution which can resist the change in the pH of solution upon addition of acid or base is know...
Q: In one experiment, 0.871 mol of NO is mixed with 0.506O2. Determine which of the two reactants is th...
A: Given, Number of moles of NO = 0.871 mol Number of moles of O2 = 0.506 mol Limiting reactant = ? N...
Q: In a presence of a base, which of the following will not form an enolate? A) B) OEt OEt OEt C) D) OE...
A: When carbonyl compounds are treated with a strong base, the alpha position of carbonyl carbon gets d...
Q: Propose a synthesis of the compound shown below starting with benzene and any other acydic carbon co...
A:
Q: A buffer is prepared using 0.15 M HF and 0.15 M NaF. What is the pH of this buffer? pKa for HF is 3....
A: Given :- [HF] = 0.15 M [NaF] = 0.15 M pKa for HF = 3.1 To calculate :- pH of buffer
Q: What is the purpose of calibrating the "spirit bubble" or "spirit level"?
A: the purpose of calibrating the "spirit bubble" or "spirit level" is.,
A fertilizer sample contains 9.11 %P2O5 and 11.03% H2O. Calculate the %P.Os on a dry basis?
A. 12.1%
B. 0.1%
C. 0 92%
D. 10.2%
Step by step
Solved in 3 steps
- Mass of Na2CO3=5g Mass of CaCl2=4.98g Mass of filter paper=1.11g Na2CO3 and CaCl2 combined, filtered, and dried overnight. The mass of the solid produced = 2.86g Calculate the theoretical yield of solid expected and the percent yield obtained.Phosphate that is added to our drinking water forms a protective layer of lead phosphate on the inside of the pipes that distribute that water to our homes. The EPA maximum limit for lead in drinking water is 50ppb. Calculate the concentration of phosphate needed to keep the lead concentration below 39ppb. The Ksp of lead phosphate Pb3(PO4)2 is 1.6×10-32. Report your answer in ppb to the nearest whole number. Phosphate is 94.97 g/mole and lead is 207.2 g/mole.(a) 4.95 g of NaCl dissolved in 50.6 g of H2O % (b) 1.92 g of LiBr dissolved in 43.0 g of H2O % (c) 24.8 g of KNO3 dissolved in 351 g of H2O % (d) 3.9×10-3 g of NaOH dissolved in 3.3 g of H2O %
- Calculate grams of sucrose that must be added to 206.8 grams of water to prepare a 18.32 % by mass solution. a. 46.4 b. 139 c. 92.8 d. 0.0969 e. 23.2Calculate the final molarity of H2O2H2O2 if 5.9 mL5.9 mL of a 3.0% w/w H2O23.0% w/w H2O2 solution, which has a density of 1.0 g/mL,1.0 g/mL, is added to 5.9 mL5.9 mL of a starch-iodide solution. final [H2O2]=[H2O2]= MM Calculate the final molarity of H2O2H2O2 if 1.6 mL1.6 mL of the 3.0% w/w H2O23.0% w/w H2O2 solution is diluted with 3.4 mL3.4 mL water, then added to 5.0 mL5.0 mL of a starch-iodide solution. final [H2O2]=[H2O2]= M1. Calculate the normality of 0.321 g sodium carbonate (106.0 g/mol) when it is mixed in a 250 mL solution. 2. What is the normality of 0.0521 M H3PO4? 3. A12.5-mL portion of a base solution of an element from group 2A is diluted to 500 mL; the resulting concentration of this solution is determined to be 0.125 M. What is the normality of the original solution. 4. A sample of USP-grade citric acid (H3C6H5O7, three titratable protons) is analyzed by titrating with 0.1087 M NaOH. A 0.2678-g sample requires 38.31 mL of the titrant for titration. A. What is the normality of the titrant? B. What is the stoichiometric relationship between the analyte and the titrant? C. How many moles of the titrant were consumed to react with the analyte? NOTE: please include the given, the unknown, the chemical reaction, the calculation process, and the final answer with the proper number of significant figures.
- Describe the preparation of a 700 mL of 4.36% (w/v) aqueous ethanol (C2H; OH, 46.1 g/mol). Weigh ___ g ethanol and add enough water to give a final volume of ____ mL. 700 g of 4.36% (w/w) aqueous ethanol. Mix ____ g ethanol with ____ g water. 700 mL of 4.36% (v/v) aqueous ethanol. Dilute ____ mL ethanol with enough water to give a final volume of ____ mL.A solution is prepared by diluting 15.0 mL of 13.7-M phosphoric acid solution to a final volume of 2.50 L. What is the concentration of the new solution? a. 14.2 M b. 2.74 M c. 1.28 M d. 0.0822 MThe nitrogen content of organic compounds can be determined by the Dumas method.The compound in question is first passed over hot CuO(s): Compound + Hot CuO(s)------> N2(g) + CO2(g) + H2O(g) The gaseous products are then passed through a concentrated aqueous KOH solution to remove the CO2.The remaining gas contains N2 and water vapor.A 0.648-g sample of a compound was treated as above, producing 82.7 mL of N2 saturated with water vapor at 25 °C and 778.3 torr.What is the mass percent of nitrogen in the compound? (The vapor pressure of water at 25 °C is 23.8 torr.)
- A fertilizer advertised as 8-8-8 generally means that it contains 8% total nitrogen, 8% P2O5, and 8% K2O. Calculate the percentage of P and K in the fertilizer.Granulated sugar (sucrose, C12H22O11) has an average density of about 0.70 g/cm3. Calculate the molarity of sucrose if 2.0 tsp of sugar is added to a 8.0 oz cup of coffee. 1.00 tsp = 4.93 cm3How to find the theoretical yield of camphor and percent yield of camphor? show the steps. Mass of borneol used: 0.1839r Volume of bleach used: 3.0mL Theoretical yield of camphor: Mass of camphor obtained: 2.238gr Percent yield of camphor: Melting point of camphor: 173C
