Predict all approximate bond angles about each highlighted carbon atom. To make these predictions, use valence-shell electron-pair repulsion (VSEPR) theory

Q: 50 mL of HCl are titrated with a known concentration of NaOH (0.45M). calculate the moles of NaOH at...

A: Given : concentration of NaOH = 0.45 M and volume of NaOH solution used to reach end point = 35.4 mL...

Q: I have a hard time to look at this question

A: The given orbital diagram clearly gives the information the element which should have 9 electrons. S...

Q: Chemistry Question

A: The ratio of the product of the concentrations of the products to the product of the concentrations ...

Q: Vibration-rotation transitions in the infrared spectrum of 1H19F were observed at 2886.50, 2908.51, ...

A: a) Wavenumber originated for the absorption line in the P branch is given, Wavenumber originated fo...

Q: Which of the following places the ions in order from smallest to largest?  Na+, Mg2+, P3-, Cl-  P3...

A: The species given are Na+ ,Mg2+ ,P3- and Cl-  Since after losing the 1 valence electron by Na and 2 ...

Q: Please help me thank you

A: Given : Vapour pressure of water = 47.37 KPa  

Q: A chemical reaction has a free energy change of -3.0kJ/mole. what is the value of the equilibrium co...

A: The relationship between the ΔG i.e free energy change and equilibrium constant is given by  RTln(K)...

Q: Draw a amperometric and biamperometric titration curve of Iron 2+ with Cerium 4+

A: Amperometric titration: It is the titration in which diffusion current is measured and also maintain...

Q: How do you find the rate of reaction and what is the rate of reaction for solutions 1-4?

A: Calculation for rate of reaction of solution-1:

Q: conduct electricity when dissolved in water    A. ionic compounds B. Covalent compounds C. Neither i...

A: For any compound to conduct electricity in water, it has to be soluble in water and should be produc...

Q: help.

A: A Lewis structure is a simplified representation of the valence shell electrons in a molecule. Valen...

Q: Graph the following data to determine whether the reaction A ⟶ B + C is first order.

A: According to rate law: For a first order reaction,the rate of the reaction is proportional to the co...

Q: What is the value of the equilibrium constant of a reaction for which ΔrGΘ = 0?

A: The standard Gibbs free energy change of a chemical reaction is the maximum amount of useful work th...

Q: In which of the following molar quantities of sulfur would 5.95*1024 atoms of sulfur be present? A) ...

A:

Q: Beta particles are identical to     electrons     protons     hydrogen atoms  ...

A: Beta particles are particles with -1 charge and 0 mass approx i.e they are represented by 0-1e  

Q: 3. Which is the explanation for the difference between the two isotopes of carbon, C-12 and C-14? a....

A: Concept: Isotopes are the element of the same species that have the same atomic number but differ in...

Q: What statement is true?     During an endothermic reaction the entropy of the surroundings inc...

A: Endothermic reactions are those reactions in which there is a net absorption of energy from the surr...

Q: In a electrochemical cell, which of the following statements is true?     In a galvanic cell, ...

A: Electrochemical cell : In a cell when chemical energy transforms into elctrical energy , that cell i...

Q: Determine AS for the phase change of 1.10 moles of water from solid to liquid at 0°C. (AH = 6.01 kJ/...

A: The phase change can be represented as,                          H2O (s)  ---->  H2O (l) As the p...

Q: Calculate the Ksp for silver sulfate if the solubility of Ag2SO4 in pure water is 4.5 g/L. A) 3.0 x ...

A: The dimensionless equilibrium constant helpful in estimating dissolved amount of any slightly solubl...

Q: The solubility of calcium sulfate, CaSO4 in water is 0.0049 mol/L. Calculate Ksp.

A: Given : The solubility of CaSO4 in water is 0.0049 mol/L Hence 0.0049 mol/L concentration of CaSO4 w...

Q: Find all molecules/ions with resonance structures and draw them.  HCN CH3OH SeF6 NO2- AsF5 XeF2 TeF5...

A: : As you have posted multiple parts of the question, hence solving only the first three parts for yo...

Q: Which of the following statements about enzymes is FALSE? A. Enzymes are consumed during a chemical ...

A: Enzymes are used as a very specific catalysts during the chemical reaction as it increases the rate ...

Q: For a weak acid, when does the pH equal the pKa?

A: Answer: For this we need to know Henderson-Hasselbalch equation . Explanation:  Henderson-Hasselbalc...

Q: Use trivial names, where appropriate, to name this molecule. CI

A: Trivial name is used to nomenclate the organic compounds. Chloro is used as the trivial name for org...

Q: 33. Aromatic hydrocarbons are a. hydrophilic b. hydrophobic c. polar d. more than one choice is corr...

A: Hydrocarbons are the compounds which are formed by the only C-C and C-H bonds i.e it is made of up o...

Q: System at equilibrium before temperature is increased. Consider the reaction, A =B AH = -45 kcal/mol...

A: A reaction is said to be in equilibrium if the rate of the forward reaction is equal to the rate of ...

Q: EDTA Titration You are using a titration between EDTA and "Hard Water" to determine the hardness of ...

A: The water hardness may be explained as the water that contains typical minerals essentially calcium ...

Q: Calcium carbide,CaC2 , is manufactured by the reaction of CaO with carbon at a high temperature. (Ca...

A: In a chemical reaction, two or more than two reactants react with each other to produce one or more ...

Q: 2-please see attached

A:

Q: ThermoDynamic Data C2H5OH = delta H = -278 KJ/mol, delta G = -175 KJ/mol, S = 161 J/K mol 3O2 = delt...

A: given: C2H5OH = delta H = -278 KJ/mol, delta G = -175 KJ/mol, S = 161 J/K mol 3O2 = delta H = 0 KJ/m...

Q: Write the balanced equation if excess I2 is reduced using S2O3^2-?

A: Redox reaction- the reaction in which oxidation and reduction takes place simultaneously called as r...

Q: i don't get it

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Q: For the decomposition of gaseous dinitrogen pentaoxide, 2 N,O5(g) → 4 NO2(g) + O2(g) the rate consta...

A: The expression of first order reaction is shown below: ln[A]t = -kt + ln[A]0 where; k = rate constan...

Q: What is a Buchner funnel and what is it used for?

A: A Büchner funnel is a glass or plastic piece of laboratory equipment which is in shape of a funnel. ...

Q: Consider the spontaneous (G° < 0) reaction     2 O (g)  O2 (g)   Predict the sign of S, and H of ...

A: The reaction given is 2 O (g) -----> O2 (g)  Since in the above reaction, initially we had 2 gase...

Q: Trade the ruler to the correct number of significant figures

A: Significant figures- Uncertainty in measured value leads to uncertainty in calculated results. Uncer...

Q: Reaction 3

A: The reactants given are colourless clear solution of NaOH and blue colour solution of CuSO4  Hence t...

Q: Which of the following nonmetals is the most chemically reactive?  nitrogen  neon  selenium  oxyge...

A: Nonmetals are the elements that are present in the right side of the periodic table.  They do not co...

Q: Which of the following stretches are infrared-active (i.e. show a signal in the infrared spectrum)? ...

A: IR active compounds are the ones that have net dipole moment.  Dipole moment result from the electro...

Q: Image shows a part of the phase diagram of an alloy of copper and aluminium. Describe what would be ...

A:

Q: A chemist determines that a sample of petrified wood has a carbon-14 decay rate of 6.00 countsper mi...

A: Record the given data, Initial Carbon-14, No = 13.6 CPM per gram Nt = 6.00 CMP per gram Half-life t ...

Q: Which one of the following reagents is capable of transforming Fe2+(1 M) to Fe3+(1 M)?          ...

A: Since we want to oxidise Fe2+ to Fe3+  Hence the reagent should be such that the reduction potential...

Q: A plastic bag is weighed and then filled successively with two gases, X and Y. The following data ar...

A: A plastic bag contains two gases X and Y . the given conditions are : Temperature = 0.0°C (273 K) Pr...

Q: A reaction between substances A and B has been found to give the following data: ЗА +2B → 2C+D

A:

Q: Which is the reducing agent in, Cu (s) + 2Ag+(aq) → Cu2+ (aq) + 2Ag (s)? A. Cu2+B. AgC. CuD. Ag+E. H...

A: The reaction given is Cu (s) + 2 Ag+ (aq) → Cu2+ (aq) + 2 Ag (s)  

Q: Please ignore my work! Not sure if it is correct!  Please find the molarity of NaOH solution for eac...

A: The ratio of moles of solute to the volume of solution in liters is known as molarity.

Q: Which of the following is not true in a galvanic cell?     In a galvanic cell electrons flow f...

A: Galvanic cell is type of electrochemical cell.  Transfer of electrons in the redox reaction is the p...

Q: Use the graph and the best fitting line to predict the concentration of NO2NO2 at 2000 ss . Express...

A: Equation of the curve given is y = 0.255 x + 100  where x = time in s  and y = [NO2 ]-1