Elements that have four valence electrons are classified as _____.

Q: Consider the following sets of replicate measurements B. D 55.35 55.32 9.5 0.612 5.7 4.2 20.63 0.972...

A: Mean is the average value of a data set Median is middle value of dataset Range is the difference be...

Q: which of the following compounds would be the most basic? A. p-methoxyaniline B. p-nitroaniline C. p...

A: Basicity means donate the lone pair of electron  Basicity depends on 1) + I and + R  

Q: Which of the following compounds can be converted to an alkyl lithium compound in one step by reacti...

A: Alkyl lithium compound formed in one step if there is no acidic hydrogen present .

Q: Cname of the following structure cle

A: Prefrence of group according to CPI rule is          -OH>-CHO>-CH3>-H       IUPAC name     ...

Q: 1.- The compound shown below can be prepared in principle by 6 different Diels-Alder sequences follo...

A:

Q: Explain how you would draw XeF4 and determine its shape, hybridization, polarity and intermolecular ...

A: The molecule given is Xenon tetrafluoride XeF4.

Q: The given Ka value of nitrous acid (HNO2) is 4.5 x 10^-4. Find the value of Kp for the equilibrium r...

A: The multiplication of acid dissociation constant and base dissociation constant is equal to 1.0×10-1...

Q: How many signals do you expect in the proton NMR spectrum of 1,2-dimethylbenzene?

A: Given organic compound is 1,2-dimethylbenzene.The protons having different chemical environment will...

Q: How many mg of active ingredient present in a 30g tube of a 0.05%w/w fluticasone ointment? are

A: Given :-  %w/w = 0.05%  Mass of tube = 30 g  To calculate :-  Mass of active ingredient (in mg) 

Q: what is the oxidation number of S in H2SO4 ____ and S in H2SO4 b.) what is the element that is oxidi...

A:

Q: CI Н. CH,CH, CH,

A: IUPAC name -  (S)-2-Chlorobutane

Q: HO H2SO4

A: In elimination reaction a species leave the substrate and double or triple bond is formed.

Q: A reactant decomposes with a half-life of 44.7 s when its initial concentration is 0.297 M. When the...

A:

Q: For the hydrogenation reaction of (R,Z)-3-methylpent-3-en-2-ol shown below, which of the following s...

A: Option D is correct answer. a racemic mixture of enantiomers having stereo center at C2 and C3

Q: A common ketone starting material is shown below. Predict the major product for each reaction based ...

A: Given that , An aldehyde reacts with different reagents and the respective products are as follows.

Q: What is the product of the following reaction? HF C14H20

A: Friedel-Crafts Alkylation refers to the replacement of an aromatic proton with an alkyl group. This ...

Q: Consider the following three step reaction. (a) Add curved arrows in Step [1] to show the movement o...

A:

Q: e Chatelier's Principle

A: Common ion effect stop the dissociation of weak electrolytes. Or dissociation of weak electrolytes a...

Q: Determine whether the following reaction would be spontaneous or not. Fully explain the reason for y...

A:

Q: For the following reaction, which of the following change(s) in the IR spectrum is consistent with c...

A: We have to predict the option describing the conversion of Reactant to products.  

Q: Why is the percent recovery of the essential oil less than 100%? State at least two reasons that are...

A: To explain: The percent recovery of the essential oil less than 100%  

Q: A supersaturated solution of CH3COO-Na+ will crystallize spontaneously. Predict the signs of AH,AS,A...

A:

Q: 3. A solution that may contain any of the group Ill cations. Treatment of the solution with CIO in a...

A: Solution - According to the question - Given - group IIIA: Al3+, Cr3+, Fe3+, group IIIB: Zn2+, Ni2+,...

Q: Get the number of moles of the given substances. a. 0.26 g iron, Fe b. 1.50 x 1023 sodium atoms, Na ...

A:

Q: Question 8 The system has the least symmetry among the seven crystal systems. triclinic monoclinic r...

A: we need to tell which crystal system has least symmetry

Q: Please show all the steps to these all solution. Thanks in advance

A: a.) Qp expression can be written from given reaction . Qp only contains gaseous species.  b.) To cal...

Q: What is the correct combination of reagents to make the following alkene? -CuLi CULI -CuLi -CuLi -Cu...

A:

Q: Explain how you determine the pH of 0.500 M HOCI (Ka = 3.6 x 10) www m

A: pH  = - log [H3O+] HOCl is a weak acid and doesn't undergo complete dissociation in solution. Thus, ...

Q: When CH3CH2CH20H is added to water a homogenous mixture forms. The mixture does not conduct electric...

A: Given-  CH3CH2CH2OH 

Q: Give the molecular formula for each of the following molecules

A: We have to predict the molecular formula for given organic molecules.  

Q: 2. are the percent compositions of the flue (dry basis) if the fuel is burned stoichiometrically? As...

A: The solution of the question is given below: The information given is:  C = 83 % H2 = 7% O = 5% S = ...

Q: Compound A of formula CgH140 is chiral. Reaction of compound A with HBr yields a mixture of two prod...

A:

Q: Give the IUPAC name for each of the following: || CH,CH,-0-C- CH,CH, a. b. CH,CH,CH, СН,— С-О-CH,CH,...

A: The given compounds are ester.   

Q: A diprotic base (B) has pk, values of 3.36 (pKh1) and 6.72 (pK2).

A:

Q: Consider this equilibrium reaction at 400 K. Br, (g) + Cl, (g) = 2 BRCI(g) K. = 7.0 = 0.00415 M, [Br...

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Q: Identify the suitable reagents for the following: H,O

A:

Q: In the Labster experiment, there are only singlet peaks seen in 13C- NMR. Do you think we will see p...

A:

Q: Based on what you have learned so far in the Labster experiment, if a set of equivalent protons has ...

A: The number to which a signal splitts is related to neighbouring or adjacent number of hydrogen by N+...

Q: Which of the following have S configuration?

A:

Q: Prelaboratory Assignment: Qualitative Analysis Group III Cations 1. Prepare a complete flow chart fo...

A: Group 3 cation involve Cr3+ , Al3+ , Ni2+ and Fe3+

Q: write the line notation of the cell ii.) describe in detail how this galvanic cell is able to produc...

A: I) Line notation of galvanic cell is Oxidation half cell is written in the left side of salt bridge(...

Q: A student ran the following reaction in the laboratory at 715 K: N2(9) + 3H2(g) = 2NH3(9) When she i...

A: When there  is equilibrium reaction at certain point of time rate of forward reaction equal to rate ...

Q: ne conjugate base

A:

Q: 1. Draw the structure and enumerate the uses of the following aldehydes:

A: To Draw the structure and enumerate the uses of the following aldehydes.,

Q: Number of moles Mol. Density Volume in Weight in In g/mL mL Melting pt in °C Substance Wt. Magnesium...

A: Molecular weight  is also called as molecular  mass.

Q: What is the predicted product of the reaction shown? NH3 O,N- O2N- -NH2 II O2N- CI O2N NH2 IV O2N- I...

A:

Q: A technical machinist is asked to build a cubical steel tank that will hold 510 L of water. Calculat...

A:

Q: Identify the structure below that is most consistent with the spectrum. (Hint: Use table 15.2 of tex...

A:

Q: In the mass spectrum of 2-pentanol, alpha cleavage is not expected to generate which of the followin...

A: We have to predict the peak not generated by alpha cleavage.  

Q: 12. Identify the functional groups in penicillin. CH3 CH3 COOH penicillin G (an antibiotic) IZ

A: Given:-

d-Block Elements

According to the modern form of periodic table, 118 elements are present which are subdivided as four blocks, namely, s, p, d and f-block elements based on the entry of the valence electron or last electron into which orbital.