Which of the following has four valence electrons? A) beryllium B) carbon C) sodium D) sulfur

Q: Directions: Answer in not more than three (3) sentences. Provide a separate sheet of paper for your…

A: Given,  According to Le-Chatelier's principle, what will be the effect of an increase in temperature…

Q: (iv) Re-draw the amino acid below in a Fischer projection. H2N но, Me

A: The Wedge dash is converted  to fischer in such a way that most oxidized  group at  top and most…

Q: 17-20. Uranium-238 decays very slowly, with a half-life of 4.47 billion years. What percentage of a…

A: Answer: 12.5%

Q: Cinnamaldehyde is one of the primary constituents of cinnamon oil and contributes significantly to…

A: This question belong to reaction mechanism of carbonyl compound. This question have done question…

Q: What is the pathlength in centimeters when the molar absorptivity for a given absorbing species is…

A:

Q: Given the data in the table below and AH°rxn for the reaction SO2C12 (g) + 2H2O (1) → H2SO4 (1) +…

A:

Q: Use the simulation lab to obtain the distance for the solvent front and the distance for each spot…

A: Rf value can be calculated using the expression: Rf=Distance travelled by the componentDistance…

Q: The pH of a solution with a [OH–] concentration of 1.20 x10–6 M are___, respectively.

A:

Q: Calculate isoelectric point (PI) of the peptide GSTSRASPRM. pKa N-terminus = 9.3; pKa R = 12.5; pKa…

A: The peptide is GSTSRASPRM.

Q: An instrument reading for a standard solution whose concentration is 8.0ppm is 0.651.This same…

A: Given: Concentration of standard solution =  8.0 ppm Absorbance of standard solution = 0.651…

Q: 2. Draw a full arrow-pushing mechanism for the reaction shown below ROOR `CN ČN ČN ČN "

A:

Q: Identify the correct dipole for the C-O bond in the Lewis structure of methanol shown using the…

A: The covalent bond is formed by the sharing of electrons between the atoms.

Q: What is the Ka of 0.500M acetic acid if its ph is 3.7?

A:

Q: A solution was prepared by dissolving 18.00 grams glucose in 150.0 grams water. The resulting…

A:

Q: What is the predicted product of the reaction shown? NaOH/H2O H. HO II of он `H H II IV OH `H O II

A: The aldehyde or ketone having alpha-hydrogen undergoes condensation reaction in presence of NaOH and…

Q: Using benzene as starting material, devise a synthesis for the target compound in 3 steps by…

A:

Q: 1.      What is the numerical value of the concentration in a solution that gave an instrument…

A: Given that -  The instrument readout = 53.9  The proportionality constant = 104.8    Then, from…

Q: State and explain why 99m Tc is used in preference to 1231 for investigating cerebral blood flow in…

A: The answer is attached-:

Q: I need help finding the functional groups and the wavelegth  for the coumpound   and to draw the is…

A: The compound p-bromoacetanilide is given below : If we expand the above structure with all the…

Q: Identify the oxidation numbers to all the elements in each of the compound or ior HCI

A:

Q: 2. Complete the following reactions ( H2SO3 + Ba(OH)2 > a. b. CAH9OH + 02 > C. Br2 + YF3 → d.…

A:

Q: 3.Which has higher ionization energy, potassium cation or chlorine anion? Why?

A: Given in following question potassium cation and chlorine anion which higher ionization energy and…

Q: 6. For the reaction 2 HI H2) + I2) Keg = 0.016 at 500°C (a) If 1.0 mole of HI is placed in a 2.0-/…

A: Given, Reaction : 2 HI(g) ⇌H2(g) +I2(g)     Keq=0.016

Q: 5. At 25°C, the K, for a certain monoprotic base B is 2.5x10. What will be the K, value for the…

A:

Q: How do you solve for the exact molarity of KIO3 solution?

A: The exact molarity of KIO3 is calculated using the exact mass of KIO3 weighed which is 2.701 g and…

Q: You need to produce a carbonic (H,CO3)/bicarbonate buffer solution that has a pH of 4.50. You…

A:

Q: Identify the oxidation numbers to all the elements in each of the compound or ion Pb02 O a. Pb=+2;…

A: The oxidation number of each elements in compound PbO2 = ?

Q: NUCLEAR REACTIONS Zinc-62 decays with a half-life of 9.186 hours. 1. Write the balanced nuclear…

A: Answer: All nuclear reactions are first order reaction therefore integrated rate law of first order…

Q: An important reaction in the production of energy from sugars (glycolysis) is the reduction of…

A:

Q: In the reaction SO2 + 2 H2S 3S + 2 H20 O a. sulfur is both reduced and oxidized O b. sulfur is…

A: Oxidation is the increase in the oxidation state and reduction is the decrease in the oxidation…

Q: 5. In a mixture of two liquids A and B, if A obeys Raoult's law in the whole range of…

A: Raoult's law talk about both solute and solvent but Henry's law talk about only solute.

Q: NH

A:

Q: A hydrocarbon reacts with oxygen in a bomb calorimeter containing 2.00 kg of water. The temperature…

A:

Q: How important is the synthesis of esters when it comes to improving the manufacture of medicines?

A: Esters are considered biologically very important. Their characteristic taste and odour make them…

Q: For a certain process at 455 K, A G=-12.1 kJ and A H=-9.2 kJ. Therefore, A S for the process is

A: Given :-  ∆G = -12.1 kJ  ∆H = -9.2 kJ  T = 455 K  To calculate :  ∆S (inJ/K mol)

Q: Identify the expected major product of the following electrocyclicreaction. + En + En + En II IV V…

A:

Q: Assume that 2.5 ATPS are generated per NADH and 1.5 ATPS per FADH What is the total number of ATPS…

A: Since, NADH produced 2.5 ATPs  and FADH2 produced 1.5 ATPs. So, total number of ATPs generated from…

Q: A reaction has a rate constant, k = 1.29 s-1. What is the half-life (seconds) when the initial…

A:

Q: Provide an arrow pushing mechanism for the following reaction. Include protons and each step clearly…

A:

Q: the properties below apply to the -(CH I that apply. plymer formed by splitting out addition polymer…

A: It is formed by Adipic acid and hexametyldiamine So , it is condensation polymer.

Q: When [Cu2+] = 1.46 M, the observed cell potential at 298 K for an electrochemical cell with the…

A: Reactions : Cathode: Cu2+(aq) + 2e- ——> Cu (s)  Anode: Mn(s) ——> Mn2+(aq) + 2e-

Q: A Predict the main product of the reaction of CH;CH,NH, at pH 5 with compound A.

A:

Q: How do you solve questions b. and c.?  Why would the solubility of Ca(IO3)2 and the KSP be…

A: As per the guideline, since you have asked multiple questions, we have solved the first question for…

Q: plete the following reactions ( . H2SO3 + Ba(OH)2 > . CAH9OH + 02 > Br2 + YF3 >

A: In the balanced chemical reaction number of atoms of each element in product side is equal to number…

Q: SOLVE THE FOLLOWING: I. Find the molar mass of the given elements or compounds. Express your answers…

A:

Q: 4) Coleulare a) Vec at STP 6) molar volume [Zkaog c) % KClOg ON > 30z+ 2Kci]

A: The thermal decomposition of KClO3 produces oxygen gas along with solid potassium chloride. The…

Q: Calculate the enthalpy, in kJ/mol, for the combustion of the hydrocarbon from the data from the…

A: Check the formula for ∆H which contains q and n in it and find out ∆H value for given data.

Q: 1. Calculate the percent composition of sucrose ( C12H22011) %O = 176.00 g/mol x 100 = 51.41% 342.34…

A: Known: Atomic mass of O = 16.00 amu Atomic mass of H = 1.01 amu Atomic mass of C = 12.01 amu

Q: Question What is the normality of o.0824M H3PO4? Type only the numerical value in three significant…

A: The normality can be calculated as follows

Q: Consider the following equation carefully, and determine the sign of AS for the reaction it…

A: 1) In this reaction, reactant is in solid state so it's entropy is less because less randomness in…