Identify each of the following elements as a nonmetal, metal, or metalloid: Na, F, Cr, Mo, Kr, Si, Cu, Sb, I, S

Q: Explain the features of the carbon–carbon double bond ?

A: Features of the carbon–carbon double bond:               Carbon-carbon double bonds (C=C) are strong...

Q: calculate the atomic mass for lithium shown on the periodic table given the following regarding its ...

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Q: Draw the Lewis structures of the neutral atom of Fluorine and the ion of Fluorine. Determine also th...

A: Fluorine atom has an atomic no. of 9. It has 7 electrons in the outermost shell in the atomic form. ...

Q: Explain how you would proceed to isolate (R)-(+)-α-phenylethylamine from the mother liquor that rema...

A: To explain:  Isolation of (R)-(+)-α-phenylethylamine from the mother liquor.

Q: Carbon dioxide (CO2) is a gaseous compound. Calculate the percent composition of this compound. Answ...

A: Mass percentage is given by, Mass percent =mass of the elementTotal Mass ×100

Q: A standard CaCO3 solution is prepared by dissolving 0.4193g in enough dilute HCl to effect solution ...

A: The given data contains, weight of CaCO3 =0.4193 g volume of EDTA =23.62 ml  

Q: : Find the relationship that would be needed to compute the change in Helmholtz free energy when the...

A: From the second law of thermodynamics, we know that A=U-TS Function A is a state function, the chang...

Q: What is the final temperature if 150 mL of water at 90 °C is added to 120.0 mL of water at 30 °C ? O...

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Q: The mass spectrum of n-octane shows a prominent molecular ion peak (m>z 114). There is also a lar...

A: The intensity of the peak is dependent upon the stability of the fragments. In case of octane the mo...

Q: Assign an oxidation number to each element in the following compounds and ions: 1. Mn207 (2] 2. HNO3...

A: Oxidation number: The covalent bond between the atoms of different electronegativity is polar. If we...

Q: Which element is the reducing agent in the following reaction? 3H2S + 2NO3 + 2H* → 3S + 2NO + 4H20 O...

A: A redox reaction is defined as the reaction in which oxidation and the reduction of atoms takes plac...

Q: Calculate the mass in grams of 2.688 mol of      a. chlorophyll, C55H72N4O5Mg, responsible for  the ...

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Q: Automobile air bags use the decomposition of sodium azide as their source of gas for rapid inflation...

A: Sodium azide decomposes into sodium metal and nitrogen gas. The equation for the balanced chemical r...

Q: Rank compounds A, B, and C in order of increasing frequency of thecarbonyl absorption in their IR sp...

A: Higher the bond strength higher will be the IR stretching frequency.  

Q: How does a closed system differ from an open system?

A: Solution An open system is one that interacts with its atmosphere and so exchanges info, material, o...

Q: Compare and contrast dehydration and hydrolysis reactions

A: Both dehydration synthesis and hydrolysis reactions play important role in the synthesis of biologic...

Q: Nicotinic acid, more commonly named niacin, is one of the B vitamins. Show how nico- tinic acid can ...

A: In a chemical reaction; the substance which involves in conversion is said to be reactant whereas th...

Q: How many grams of NaOH should be mixed with 5.4 g of oxalic acid (H2C2O4) and completed to 100 mLsol...

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Q: Mercury has six isotopes with significant natural abundance: 198Hg (10.0%), 199Hg (16.9%), 200Hg (23...

A: The elements which has same atomic number and different mass number is known as Isotopes. Radioisoto...

Q: A galvanic cell is constructed by linking a Co2+ | Co(s) half-cell to an Ag+ | Ag(s) half-cell throu...

A: a) The half cell reactions at cathode and anode are  - cathode - Co(s) →Co2+(aq) + 2e- Anode    - 2 ...

Q: What is the instantaneous rate of the reaction?

A: The instantaneous rate is the rate of a reaction at any particular point in time, a period of time t...

Q: How can the following compound be prepared from the given starting material?

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Q: Identify the most important intermolecular forces in Ar, CCl4, HCl, H2O, H2S

A: The intermolecular forces are also known as secondary forces which can moderate the interaction betw...

Q: Did I do this conversion correctly? (My answer is highlighted in red)

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Q: To treat a burn on his hand, a person decides to place an ice cube on the burned skin. The mass of t...

A: Given, mass of ice cube=13.2 gm mass of water=13.2 gm initial temperature=-12.7°C final temperature=...

Q: Which of the following is an oxidation reduction reaction? O None of them + 2H2O (1) O H2CO3 (aq) + ...

A: Increase in oxidation number is called oxidation. Decrease in oxidation number is called Reduction. ...

Q: The rate constant for this zero‑order reaction is 0.0190 M·s−10.0190 M·s−1 at 300 ∘C.300 ∘C.   A⟶pro...

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Q: I need accurate and full answers.

A: Molecular Solid : This  formed by the sharing of electron pairs in atoms Normally Molecular solid is...

Q: To make 110 microliters of working enzyme solution, You were adding 2 microliters of enzyme and how ...

A: To find the unknown values from known values, the formula used is, M1V1=M2V2 where M is the molarity...

Q: Give the structure of the following alkene and alkyne and determine if the given name is   correct. ...

A: Rules to write the structure of the compound from the given IUPAC name of alkanes, alkenes, and alky...

Q: A particular refrigerator cools by evaporating liquefied dichlorodifluoromethane, CCl,F2. How many k...

A: Given: mass of water=507g heat of fusion=6.01kJ/mol heat of vaporization of dichlorodifluoromethane=...

Q: Consider the H2+ ion. (a) Sketch the molecular orbitals ofthe ion and draw its energy-level diagram....

A:   Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question an...

Q: Use the Maxwell–Boltzmann distribution of speeds to estimate the fraction of N2 molecules at 400 K t...

A: The expression for Maxwell's speed distribution is shown as follows: dNcN=4πM2πRT32c2 exp-Mc22RTdc H...

Q: The balanced equation for the reaction of nitrogen dioxide and fluorine is 2 NO2 + F2 – 2 NO2F The p...

A: The rate of a complex reaction depends upon the slow step of the mechanism,

Q: Determine the classes of matter described by each question. Each question may describe more than one...

A: Solution In chemistry, once 2 or additional substances combine with one another while not collaborat...

Q: Fill in the name and empirical formula of each ionic compound that could be formed from the ions in ...

A: Ionic compounds are those which are formed by the transference of electrons from one atom to another...

Q: The empirircal formular of Xylose is CH2O,and its molar mass is 150.1 .Find the molecular formular o...

A: Given: The empirical formula of Xylose=CH2O The molar mass of Xylose = 150.1  The molecular formula ...

Q: Oxyhemoglobin, with an O2 bound to iron, is a low-spin Fe(II) complex; deoxyhemoglobin, without the ...

A: Oxyhemoglobin, it is a low spin Fe (II) complex and iron is directly bound to O2 molecule. De oxyhem...

Q: Sketch the spectra that would be obtained for 2-chloroethanol: The 13C NMR spectrum.

A: In the four parts of the 13C NMR spectrum shown below, There is no presence of CH3 carbon, Two carbo...

Q: I need full and accurate answers.

A: Mole is the amount of the substance that contains the same number of particles or atoms or molecules...

Q: Which boxes contain gases?

A: The matter is made up of particles. The arrangement of particles is dependent on the phases like sol...

Q: Which of the following electron configurations is correct? Select one: A. Zr: [Kr]5s²4d² B. K: [Ar]4...

A: The given Configurations: Symbol Element Atomic number Electronic configuration K Potassium 19 ...

Q: Drawn are four isomeric dimethylcyclopropanes. Which of the compounds are meso compounds?

A: Enantiomers: Enantiomers are the pair of stereoisomers which are non-super imposable mirror images o...

Q: Draw the structure of benzyl chloride :

A: -CH2 group attached to the benzene ring is known as benzyl group. If chlorine is attached to this CH...

Q: Question attached

A: In a chemical reaction; the substance which involves in conversion is said to be reactant whereas th...

Q: Hydrogen sulfide is a toxic waste product of some industrial processes. It can be recognized by its ...

A: The theoretical yield of sulfur is calculated by using the stoichiometric ratio of the compound pres...

Q: Gaseous nitrogen dioxide forms dinitrogen tetroxide according to this equation:                     ...

A: The reaction quotient (Q) is provided as the ratio of the concentration of the products to the conce...

Q: Using the steps below how do you balance the oxidation/reduction reaction

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Q: State whether the following properties of matter are physical or chemical. a. An iron nail is attrac...

A: The change of one type of matter into another type (or the inability to change) is a chemical proper...

Q: Draw a Lewis structure of the molecule that matches the description below. All non-H atoms should ha...

A: Lewis representation : Lewis structure is the simplified representation of valence shell electrons i...