Q: CHEMWORK Calculate the change in the entropy of the surroundings and the change in the entropy of th...
A:
Q: 4. Powdered zinc reacts rapidly with powdered sulfur in a highly exothermic reaction. 8 Zng) + S8() ...
A: Since you have asked multiple question, we will solve the first question for you. If you want any sp...
Q: For this lab, 2 Lof 0.0020 M Fe(NO3)3 needed to be prepared. How many grams of Fe(NO3)3 needed to be...
A: Molarity is moles of substance present per liter volume. Molarity= moles of substance/ volume From ...
Q: An unknown compound A is known to be an alcohol with the molecular formula C4H10O. When dehydrated, ...
A: Given: An unknown compound A is known to be an alcohol with the molecular formula C4H10O. When dehyd...
Q: . Calculate the pH of a solution in which the con- centration of the piperidine is (a) 1.00 × 10-' M...
A:
Q: Predict the the regiochemical outcome (major product) for each of the following reaction, and explai...
A:
Q: 0.0471 kg of biphenyl (C12H10) is dissolve in benzene (CoH6) to create a solution with a total volum...
A: Answer: This question is based on Raoult's law according to which, after adding the non-volatile sol...
Q: CH3 HCI .CH3 H3C (b) H3C. HBr H3C. CH3 Br (с) HBr Br or (d) HCI
A: We have to write the correct products for the above-mentioned following reactions with proper mecha...
Q: Another mixture of PClB(g), Clafg), and PCIS(g) is at equilibrium at a different temperature in a di...
A: Given: Mixture of PCI3 (g), Cl2 (g), and PCI5 (g) is at equilibrium at a different temperature in a ...
Q: A water solution contains 10 mM HCO3 and 0.2 mg/L CO,2-. We also know the solution pH is 8.5. Please...
A: Solution Give that PH = 8.5 Alkalinity It is the ability of substances pre...
Q: A solution is 0.0500 M in NH.Cl and 0.0250 M in NH3. K. (NH,) = 5.70 x 10-10 Calculate the pH of thi...
A: [NH3] = 0.0250 M [NH4Cl] = 0.0500 M Ka(NH4+) = 5.70 * 10-10 pH = pKa + log[Conjug...
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: но What is the chemical formula for the limiting reactant in the reaction shown? chemical formula:
A:
Q: A buffer solution is made that is 0.309 M in HN02 and 0.309 M in NaNO2. If Ka for HNO2 is 4.50 x 10-...
A:
Q: A water sample was tested for BOD5, which was determined to be 50 mg/L. Which of the description is ...
A:
Q: What iŜ MALDI scopy 2 Preedict the speetto mething maes fragmendastion patern of Ira cco)ia & ration...
A: this problem based on inorganic mass spectrospy
Q: 9.49 AHn = 31.3 kJ/mol for acetone. If 1.40 kg of water were vaporized to steam in a boiler, how muc...
A:
Q: A5 kg cart moves with a constant speed of v; = 8 m/s before it starts to go down a 53° ramp, as show...
A: A 5 kg cart moves with a constant speed of Vi = 8 m/s before it starts to go down a 53 ramp.,
Q: 1. At a given pressure and temperature, the phase with the highest chemical potential will be the mo...
A: Note: As per company policy we are supposed to attempt first three parts only in case of true / fals...
Q: Synthetize 3-phenyl-2-propenoic acid from benzaldehyde using whateve organic/inorganic reagents are ...
A: The required compound can be prepared by using Perkin's reaction.
Q: 13. Given the following thermochemical equation: Mge) + Clag MgCl, + 642 kJ (5) What is the AH for t...
A: Given- Mg + Cl2-> MgCl2 +642 kJ
Q: 1. Quantum leap is the phase where electrons tend to jump from one orbit to another. 2. Ther...
A: * Electron is considered as quantum in quantum chemistry.
Q: 8. Write the product of the reaction in three dimensions and indicate if the methyl groups in the pr...
A: As per guidelines we have to solve only the First question. We have to determine the stereochemistry...
Q: Choose the correct concentrations of 48 mg/L CO2 and 27 mg/L Mg²* in mg/L as CACO3 O 155 and 89 mg/L...
A: Given data : CO2 = 48 mg/L Mg2+ = 27 mg/L
Q: 14. Given the 2 reactions below: 2NOE I. 2NO + 0z8) II. 2Li,Og + 1192 KJ → 4Lig Which statement is c...
A: The energy difference of the products and reactants is known as the energy change of a reaction.
Q: 15. Choose the pair of photoelectron spectra that will be identical. A the PES of 37Cl and 35Cl...
A: Correct answer B . The PES of Ne and F- (Same total electron)
Q: What is the retention factor of a sample when after injectiion the void time (tM) took 4.73 sec? The...
A: Answer: Retention factor is equal to the ratio of difference (between retention time and void time) ...
Q: Explain how alcohols and phenols are prepared to be used as disinfectants. Answer in 2-3 sentences ...
A:
Q: sample of oxygen is collected in a 175 mL container over water at 15.0C. If the barometer reads 752....
A:
Q: CH3CH2OH + CuO → CH3CHO + H2O + Cu If there are 1620 g of ethanol and 1020 g of CuO readily availab...
A: Mass of ethanol = 1620 g Mass of CuO = 1020 g Mass of acetaldehyde = ? Mass of excess reactant = ...
Q: Predict the product and balance redox reaction Solid cuprous sulfide is oxidized by hot conentrate...
A: In this question, we have to Predict the product and balance the redox reaction.
Q: Which of the properties below apply to the following polymer? CH CH2 CH• -CH2- CH3 n Choose all that...
A: Polyamide polymer : polymer containing -C(=O)-NH- linkage are called polyamide polymer. Polyester p...
Q: Perfect gas AS = nR ln(V/V,) Entropy of isothermal expansion
A: To prove this equation , we would use law of thermodynamics and perfect gas law.
Q: te) In a two-level, non-degenerate system with energy separation equivalent to U = 400 cm', what is ...
A: We have to calculate temperature at which population of upper is one third of the lower state Means...
Q: What volume of N2 can I produce with only 10g of NaN3? Assumption: Pressure: 1atm Temperature: 29...
A: Given :- 6NaN3-> 2Na3N + 8N2 Mass of NaN3 = 10 g Temperature = 298 K Pressure = 1 atm To cal...
Q: 6) In an Edie-Hofstee plot of v versus v/[S] what are the units of the y- intercept? 7) The Vmax det...
A:
Q: Waht is the composition of the reverse phase chromatography? non-polar stationary phase - non ...
A:
Q: Question 15 Waht is the composition of the reverse phase chromatography? O polar stationary phase - ...
A: Given,
Q: Write the charge of each ion using the format +1 or -1. You must put a positive or negative sign Wha...
A: Write charge of each ion of the following---
Q: What is the purpose of testing distilled water and laboratory ethanol in the testing of ethanol? ...
A:
Q: Using the following data obtained at 25°C. • Ksp for Cr(OH)3 is 6.3 x10-31 • Kf for [Cr(OH)4]- is 8....
A: Given Data : Ksp for Cr(OH)3 is 6.3 x10-31 Kf for [Cr(OH)4]- is 8.0 x1029
Q: What is the main information you wish to acquire when performing a melting point analysis? A) the pe...
A: Melting point analysis is always done to check the purity of our compound obtained during the chemic...
Q: Predict the product and balance redox reaction As2S3 + conc HNO3 =
A: The product of the reaction is, As2S3 + conc.HNO3→H3AsO4+H2SO4+NO2
Q: How many electrons does a Co atom have in its 3d subshell? How many of those electrons are unpa...
A: Co is the symbol of Cobalt Atomic no. of Co is 27 (total 27 electrons in its neutral state)
Q: Draw a possible forward synthesis to form the following compounds using MeOH, ETOH, NaCN and benzene...
A: To synthesize the following molecule , retrosynthetic approach is very essential . After retro synth...
Q: Aniline, C6H7N (molar mass = 93.13 g/mol), is a weak base that is used as a precursor in the synthes...
A: The solution is given below -
Q: 6. To study the reaction between ammonia and oxygen, 4NH3(g) + 702(g)52N2O4(g) + 6H2O(g), A flask wa...
A: Given that , initially concentration of [NH3] = 2.40M [O2] = 2.40M And at equilibrium , [N2O4] = 0....
Q: Vanadyl trichloride (VOCI3) is a liquid that is used as a catalyst in the manufacturing of batteries...
A: The mass of vanadyl trichloride is = 15.73 g The heat of vaporization of vanadyl trichloride is = 36...
Q: 13. Given the following thermochemical equation: Mg + Cla) MgCl2(3) 642 kJ + What is the AH for the ...
A: As 642kj energy is evolved in the product side. Therefore, this is an example of exothermic reaction...
Q: 9.62 Sulfur trioxide can be removed from the exhaust gases of power plants by reaction with lime. Th...
A: Given, CaO(s) + SO3(g) ➝ CaSO4(s) ∆H° = -886 kJ Note : negative sign (-) indicate the release of e...
Step by step
Solved in 3 steps
- [item#4]What is Bayer Test and why it used ? (With the equations)Probable identities of unknown hydrate- Copper (II) sulfate pentahydrate Magnesium sulfate heptahydrate Calcium sulfate digydrate Question: what is the probable identity of unknown hydrate? Question: assume you correctly identified the unknown hydrate- calculate how well the experimental percent compares to the theoretical perfect by determining percent error.