Why alkali is added to the nitrification tank？ A. to provide electron donors B. to provide alkalinity for the nitrification reaction C. to acidify the reaction solution D. to provide nutrients for the nitrifier bacteria

Q: What is the pH of a solution that contains a hydronium ion concentration of 4.5 x 10-12?

A:

Q: Draw the Lewis structure of ozone (O3) and then determine its electron domain and molecular…

A:

Q: In the reaction below, 7.0 mol of NO and 5.0 mol of O2 are reacted together. The reaction generates…

A:

Q: Balance the redox reaction in Acidic conditions and determine the coefficient in front of the water…

A:

Q: What is the mass percentage of oxygen in phosphorus acid (H3PO3)? O 62.2 % 42.8 % 58.5 % 82.0 % 37.8…

A: Mass percentage of oxygen in H3PO3 is 58.5%.

Q: 5. An enzyme catalyzes the reaction M concentration of 1 nM, and the Vmax is 2 µM s-1. The Km for…

A: Given: [E] = 1nM Vmax = 2 μM s-1 Km = 4 μM To calculate: kcat

Q: Alkenes -5. CH2CH2 (ethene or ethylene) Projection Drawing: Perspective Drawing: a. Predict the…

A: CH2CH2 or CH2=CH2 is an alkene with a double between the two carbon atoms, -C=C-.

Q: Exercise// A sample consisting of 2.00 mol of perfect gas molecules, for which Cy,m=5/2R, initially…

A:

Q: When a 21.2 mL sample of a 0.413 M aqueous acetic acid solution is titrated with a 0.496 M aqueous…

A: 1.) To calculate pH , first we would Calculate moles of both acetic acid and potassium hydroxide.…

Q: Section 4-8 How do Atoms Combine? When metals react, they give away valence electrons. How many…

A:

Q: Draw a mechanism for the below, which involves two steps and the star point of the enzyme (on the…

A: To draw a mechanism for the below, which involves two steps, and the starting point of the enzyme…

Q: Activity 1.3 Writing the electron configuration and drawing the orbital diagram. Directions: Write…

A:

Q: A Moving to another question will save this response. Question 1 Which of the following compounds…

A: Optically active compounds have chiral centre.If a compound has two chiral centre and their is plane…

Q: Describe the processing of titanium dioxide nanoparticles include reference

A: Answer - Titanium dioxide nanoparticles, also called ultrafine titanium dioxide or nanocrystalline…

Q: 10. Consider the reaction: Co - Ni + °e -1 This reaction has a half-life of 5.271 ycars. Supposc a…

A: 2760Co →2860Ni + -10e Nuclear disintegration follows first order kinetics  λ=2.303 log(A0/A)/t…

Q: Describe two chemical strategies that have been employed to try to overcome the problem of…

A:

Q: a. Q4. Drawa schematic diagram to differentiate cyclohexanone, acetone and benzaldehyde using the…

A:

Q: What is the ΔH of the reaction 2KS+2K→2K2S? K+S→KS ΔH=+32.5 kJ KS+K→K2S ΔH=+38.2 kJ A +70.7 kJ B…

A:

Q: A tank is filled with 370.0 g of CO,. Assuming all the gas is removed from the tank when filling…

A: Given, mass of CO2 filled in tank = 370.0 g Number of 0.750 L balloons can be filled from this tank…

Q: A chemist fills a reaction vessel with 5.97 atm chlorine (Cl,) gas, 6.65 atm phosphorus (P.) gas,…

A: ∆G for reaction can be calculated using formula  ∆G = ∆G° + RTlnQ So, first we need to calculate ∆G°…

Q: 13. According to Brönsted and Lowrry an acid and a base are species that behave respectively: A) as…

A:

Q: Which of the indicated protons would have the smallest pKa value? H. a. CH3 C C-H H. H. d. b. a O b

A:

Q: A buffer solution is made that is 0.456 M in HC10 and 0.456 M in KC1O. If Ka for HC10 is 3.50 ×…

A: The Ka for HClO = 3.50×10-8 We have to calculate the pH of a buffer solution that is 0.456 M in HClO…

Q: For a first order reaction, a graph of __________ versus __________ is linear.

A: We know that First order reaction rate is given by  -d[A]tdt=k×At And at time t = 0 , we have [A]t…

Q: The instrument response for student sample was 75, calculate the concentration of potassium ions in…

A: The equation of the curve is y = 1.9943x + 0.8095 where y is the instrument response and x is…

Q: Chloride ions are added to the Ag|Ag+ half-cell of the cell Ag|Ag+||Cu2+|Cu to precipitate AgCl (s).…

A:

Q: A buffer consists of 0.150 M acid, HA, and 0.200 M of its conjugate base, A. If HA has a K, of 4.84…

A:

Q: 1. The equilibrium system shown below was analyzed and the concentrations of HI(g), H(g), and I:(g)…

A: Given, H2(g) + I2(g) ⇌2HI + E Where E = heat as energy The equilibrium concentration of all the…

Q: Assign the configuration (R/S) of all of the stereocenters below. OCH3 N.

A:

Q: The value of K,, for water at 0 Cis 1 x 10 15b What is the pOH of water at 0°C? 6.5 7.0 7.5 8.0

A:

Q: Which of the following compounds have a ketone, ester, ether and amide functional groups?

A:

Q: Give the IUPAC names of the following(skip e) CI 2-chloró-4-ethylheptane a) b) c) d) = f)

A: IUPAC name are as follows:

Q: 04 on OH OH

A:

Q: From benzene and thiophene, synthesize the compound below

A:

Q: A. Hydrocarbons Alkanes 1. CH4 (methane) Projection Drawing: Perspective Drawing: H. H-C-H H. a.…

A: Alkane is saturated hydrocarbon. Alkane have sp3 hydrocarbon . Alkane have tetrahedral geometry and…

Q: A system expands from a volume of 1.00 L to 2.00 L against a constant external pressure of 1.00 atm.…

A:

Q: The equilibrium constant, Kp, for the following reaction is 1.80x10-2 at 698 K: 2HI(g) = H2(g) +…

A:

Q: Which substance, CH3CH3 or CH3NH2 has the higher boiling point? Explain

A:

Q: 1. You need to make 125ml of Polyacrylamide (solid) to make the gel at different percentages. Show a…

A: M/V% = ( mass solid / volume solution ) x 100 so here : A) M/V % = 5 % V = 125 mL putting values : 5…

Q: Show Attempt History Current Attempt in Progress X Incorrect. Calculate the mass defect for the…

A: Mass defect can be calculated as follows

Q: Discuss the measurement and use of the terms pi and sigma in the study of quantitative…

A: There is advantage of using the partition coefficients in connection with the Hammett equation which…

Q: A 0.500 g sample of rock was found to have 2.45 × 10-6 mol of potassium-40 (t1/2 = 1.3 × 109 yr) and…

A:

Q: Which of the following alkyl halides undergoes the fastest SN2 reaction? 1-iodohexane 1-fluorohexane…

A: This question belong to nucleophilic substitution reaction. Nucleophilic substitution reaction…

Q: Consider the following reaction where Kc = 1.20×10-2 at 500 K. %3D PCI5(g) PPCI3(9) + Cl2(g) A…

A:

Q: A saturated solution of Pb(OH)2 was found to contain 4.1x10-8 mol OH in 100.0 mL. Calculate the Kep…

A: 1.) To calculate Ksp, we would write dissociation equation of Pb(OH)2 and write it's ksp expression.…

Q: What is the original base of the conjugate acid NH4+

A: Conjugate acid contains one more proton than base from which Conjugate acid generate.

Q: Which of the following is an organic compound? O H20 O CaCO3 O HNO3 O glucose, C6H1206

A: Organic compounds are those compounds which contains hydrocarbon and some hetero atoms such as N, O…

Q: Sulfuric acid + Lithium hydroxide 2-Hexene + hydrobromic acid and light 1-Butene + bromine and light…

A: Here we have to write the chemical reaction and products obtained in the following given reactions.

Q: NaOEt, EIOH H. H20 then H,O*

A:

Q: What is the pH of a 0.015 M aqueous solution of barium hydroxide? A) 12.18 B) 12.35 C) 1.82 D)…

A:

Alkanes and Cycloalkanes

Alkanes are saturated organic compounds which are made up of C and H atoms. Alkanes have the general formula of CnH2n+2. Alkane contains sp3 hybridized carbon atoms with four sigmas (σ) bonds & every hydrogen atom is connected with one of the carbon atoms. The size of the alkane could be determined by the number of carbon atoms located in it.