Chemistry question and answers for August 16, 2023
- Q How would I calculate the final concentration of each anionsolution after equal amounts are combined to make 1 mL of the knownsolution. Anions are 0.20M of NaBr, NaCl, NaI and...
- Q 25 pts) One mole of ideal, monatomic gas, initially at T = 250 Kand pressure 5.0 atm is: a) reversibly heated at constant pressureuntil its volume doubles b) reversibly heated...
- Q Can you explain what an energy band gap is and which one hasthe highest N,O,Se,S
- Q Calculate the pH of the following:a) 0.25 M HClO (aq)b) 0.015 M Sr (OH) (aq)c) 0.015 M Hl (aq)d) 0.15 M CH3NH2 (aq)
- Q The molecular structures of Cr(acac)3 andFe(acac)3 are quite different from that ofMn(acac)3. What are these structures? What is the truestructure of the so-called manganic acetate? Please explainthoroughly.
- Q A 91.70 g sample of metal was heated in a boiling water bath at99.4 °C. The hot metal was then placed in a calorimeter, with heatcapacity 39 J/K containing 45.0...
- Q The pH of a 0.016-M aqueous solution of p-toluidine (CH3C6H4NH2)is 8.60. Calculate Kb.
- Q A 91.70 g sample of metal was heated in a boiling water bath at99.4 °C. The hot metal was then placed in a calorimeter, with heatcapacity 39 J/K containing 45.0...
- Q Consider the following blending process. A well-mixed tankinitially contains 2000. L of a solution that is 30.0 wt%phosphoric acid. At some time we begin feeding two streams of acidof different...
- Q What structural or electronic aspect of(2E)-1-(4-Nitrophenyl)-3-(2-pyridinyl)-2-propen-1-one prevents theresonance argument and empirical parameters from adequatelypredicting the H-NMR chemical shifts of the alpha C-H?
- Q Consider the following reaction: NO(g) + NO3(g) --> 2NO2(g)which has an observed rate law of rate = k[NO][NO3].a. Describe what would happen to the rate if the concentrationof NO was...
- Q consider the titration of a strong acid, HCL, with a strong baseNaOH. The 35 ml of .1 M HCL is in the flask. What is the pH of thesolution after...
- Q Part 2 – Comparing the reactivity of some metals with acids Manymetals react with acids, via an electron-transfer(oxidation-reduction) reaction that transforms the metal intodissolved metal ions. A co-product of this...
- Q Due to its hardness, thermal stability, and resistance to wear,silicon nitride is used in cutting tools. It can be producedthrough the following chemical reaction. 3 Si(s) + 2 N2(g) „³Si3N4(s)...
- Q An electrochemical cell is based on the following twohalf-reactions:Ox: Pb(s)?Pb2+(aq, 0.21M )+2e?Red: MnO?4(aq, 1.25M )+4H+(aq,2.5M )+3e??MnO2(s)+2H2O(l). Compute the cell potential at 25?C.
- Q Howdo I calculate the heat of reaction per mol of substance?
- Q The standard enthalpies offormation oxides of the fourth period eleemtns of the d block areas follows:TiO VO MnO FeO CoO NiO CuOZnO-518 -431 -385 -264 -239 -241-155 -348a)write a general...
- Q What are the major species present in a 0.150-M NH3 solution?Calculate the [OH2] and the pH of this solution.
- Q The name of the experiment is Preparation of Synthetic Bananaoil. The name of the author of the book is John Lehma. chapter5.(incase needed, we used 20.o mmol of isopentyl and...
- Q How do enzymes increase rates of biochemical reactions?What are the three classes of reversible inhibitors? Brieflydescribe them and their effects on apparent Km and Vmax.
- Q Calculate the pH change when 10. mL of 3.0 M HCl are added to500. mL of the followingA ) pure waterB) aqueous solution of 3.0g of formic acidC) aqueous solution...
- Q Calculate the molar solubility of Fe(OH)2 in a buffersolution where the pH has been fixed at the indicated values.Ksp = 7.9 x 10-16.(a) pH 7.6_________M(b) pH 10.2__________M(c) pH 12.0___________M
- Q what is the change in entropy, enthalpy and gibbs free energywhen 1 L of ideal gas i, 3 L of ideal gas j and 4 L of ideal gas k,each...
- Q how will absorbing aerosol particles in the boundary layeraffect air pollution buildup and cloud formation only if theeffects of the aerosol particles on atmospheric stability areconsidered
- Q Air is heated from 25c to 150c . The flow rate of air at theexit of the heater is 1.25m^3/min and the air pressure is 122 Kpaabsolut .calculate the heat...
Get Answers to Unlimited Questions
Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!
Membership Benefits:
- Unlimited Question Access with detailed Answers
- Zin AI - 3 Million Words
- 10 Dall-E 3 Images
- 20 Plot Generations
- Conversation with Dialogue Memory
- No Ads, Ever!
- Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!