CH2

Q: Write the differences between adsorption and absorption?

A: Adsorption is a surface phenomenon. It is of two types which are physisorption and chemisorption. Wh...

Q: A chemist allows some pure (2S,3R)-3-bromo-2,3-diphenylpentane to react with a solution of sodium et...

A: In an E2 elimination reaction, both hydrogen and bromine must be anti-periplanar to each other.  The...

Q: Using the periodic table, identify the name and symbol of the three neutral atoms given their atomic...

A: The answer to the following question is given as:

Q: Q.28. Consider a gas mixture of nitrogen (N2) and methane (CH4) of total mass 80g. 31.14% of the tot...

A: Total mass of the mixture of nitrogen and methane gas = 80 g Mass of nitrogen = 31.14 % of the total...

Q: If the adsorption of a gas onto a surface is found, somewhat unusually, to be endothermic, what can ...

A: Adsorption is the adhesion of ions, atoms, or molecules from a dissolved solid, liquid, or gas to a ...

Q: Q.29. Consider a gas mixture of nitrogen (N2) and methane (CH4) of total mass 80g. 31.14% of the tot...

A: Total pressure of the gas mixture :-         Total pressure exerted by a mixture of ideal gasse equa...

Q: A system of N particles with K number of holonomic constraints, the degree of freedom? O N-K O 3N - ...

A: For a particle there are 3 degrees of freedom . And holonomic constraints are relations between the ...

Q: The IR C=C stretching absorption in symmetrical alkynes is usually absent. Why?

A:

Q: The temperature of a sample of silver increased by 22.4 °C when 273 J of heat was applied. Substance...

A: Find the solution below

Q: What effect does atmospheric pressure have on boiling point?

A: A question based on vapor pressure, which is to be accomplished.

Q: Explain why glass is so dangerous in the lab.

A: In any laboratory, safety is the most important paramount. Lab experiments performed are designed to...

Q: Q.29. Determine, at 298 K, A¡H°, the standard enthalpy of the reaction (1) between hydroquinone with...

A: The question is based on the concept of Hess law. It states that net enthalpy change for the reactio...

Q: Q.30. Determine, at 298 K, A,„H°, the standard enthalpy of the reaction (1) between dinitrogen tetra...

A: Reaction 1: N2O4 (g) + 2 N2H4 (l) →  3 N2 (g) + 4 H2O (g) Therefore, in order to form this equation ...

Q: Calculate the number of phosphorus atoms in 100.0g sample of diphosphorus pentoxide (P2O4).

A:

Q: Questions Identify by giving the IUPAC or Common name   1. simplest aldehyde     2. acid found i...

A: The provided questions are to be answered by giving the IUPAC name of the common name. 1. Simplest a...

Q: Both the melting point and boiling point of acetamide are higher than those of its N,N- dimethyl der...

A: Given that the melting point and the boiling point of acetamide are higher than those of its N,N-dim...

Q: Calculate the number of moles in 40.0 gg of each of the following: He O2 Al(OH)3 Ga2S3 C4H10, butane

A:

Q: Draw the monochlorination products formed when attached compound is heated with Cl2. Include the ste...

A: In the given compound, there are only 3 types of carbon and on the addition of stereochemistry, 4 mo...

Q: What volume (in mL) of 9.2 M HCIO, would be required to make 500.0 mL of a solution with a pH of 3.2...

A: pH of the solution determines the acidic or basic nature of the solution. It is given that pH of the...

Q: Q.1. A student obtains the number 0.40076 on a balance. 4.00 x10 If this number actually has (3) sig...

A: Since you have posted multiple questions, we will solve only first question for you. If you want any...

Q: What will happen if someone adds a very small amount of solid salt to each beaker? refer to the atta...

A: Given: small amount of NaCl is added to three beakers a, b and c a) a beaker containing saturated Na...

Q: I need help with letter G.

A: The question is based on the concept of isomerism. compounds having same molecular formula but diffe...

Q: Chemistry Question

A: (1) In the diagram clearly given that ground state of electron has  100 zJ energy. Because A state i...

Q: TheoreticalYield=57.1g Actual=23.9g % Yield = ____________

A: Theoretical yield: The amount of the products formed from the reaction from the limiting reagent is ...

Q: Chemistry Question

A: Two numerical problems based on unit conversion, which are to be accomplished.

Q: HELP

A: In the process of oxidation, the oxidation number increases due to the loss of electrons. In reducti...

Q: Q2/ Answer the lollowing (Four öily) 1- Why CoNiCrMo alloy is used in application that require long ...

A: 1) Due to the high wear-resistance and biocompatibility the alloy CoNiCrMo used for the application ...

Q: Are allotropes different from polymorphs with respect to Carbon? Give reason for your answer.

A: Polymorphism is similarly defined as isomerism, it means if structure of an ionic compound exist in ...

Q: 4. A flash chamber operating at 50 °C and 200 kPa is separating 1,000 kg moles/hr of a feed that is ...

A: Solution

Q: An optically active monoterpene (compound A) with molecular formula C10H18O undergoes catalytic hydr...

A: An optically active monoterpene compound A with molecular formula C10H18O undergoes catalytic hydrog...

Q: Obtain the % sodium by mass in one serving of snack food.

A: Percentage mass is defined as mass of solute is divided by mass of solution and multiplied by 100.  ...

Q: Nitrogen dioxide and water react to produce nitric acid HNO3 and nitrogen monoxide.3NO2(g)+H2O(l)→2H...

A:

Q: You found a bottle of aqueous solution in the laboratory cabinet. Unfortunately, the label has been ...

A: From the data given in 1 and 2 we confirm that, the unknown is an acid and for the acid-base titrati...

Q: Part A Sodium benzoate is a food preservative. What is its chemical formula ? (Consult a handbook or...

A: Food preservatives are the chemicals which are added to foods  so that they can be preserved for lon...

Q: 2HXeO," + 3N,O+ 40OH"6NO, + 2Xe+ 3H,0 In the above redox reaction, use oxidation numbers to identify...

A: Redox reaction is a reaction in which reduction and oxidation take place simultaneously.  Loss of el...

Q: Q.29. Determine, at 298 K, A H°, the standard enthalpy of the reaction (1) between hydroquinone with...

A: The standard enthalpy of a reaction (ΔrHo) is the enthalpy change accompanying a given reaction when...

Q: This energy diagram shows the allowed energy levels of an electron in a certain atom. (Note: the SI ...

A: find the solution below

Q: Mass percent.

A:

Q: Show how to synthesize alkynes by eliminations from alkyl halides and by the additions and substitu-...

A: The reaction is a nucleophilic substitution reaction in which acetylides are involved. Acetylide is ...

Q: Why are lithium halides covalent in nature?

A: Covalent compounds are formed by the sharing of electrons.  

Q: Why is it important, in carbon dating, to consider the ratio of carbon-14 atoms to other carbon atom...

A: Radiocarbon dating or carbon-14 dating or  carbon dating can be described is a method for the determ...

Q: Determine the direction indice for vector (g) shown on cube a below. You will only be given 1 chance...

A: General steps for finding the Miller indices is shown below: Consider the starting points [abc] and...

Q: The enzyme that catalyzes the Ca¬Cb bond cleavage reaction that converts serine to glycine removes t...

A: First step of the reaction is as follows;

Q: Calculate the heat change in kilocalories for condensation of 8.0 kgkg of steam at 100 ∘C∘C.

A:

Q: Answer true or false to the following statements about energy diagrams and reactions. Q.) Thermal re...

A: In order for a reaction to occur, the collision theory is based on the premise that the reacting spe...

Q: In the presence of excess thiocyanate ion, SCN-, the folowing reaction is first order in iron lil io...

A: in first order reaction rate of reaction is directly proportional to reactent whose power is one .

Q: How long after an animal dies will it take for the C14 to decrease by 60 percent (to 40 percent of i...

A:                                Answer  Calculate the half life 

Q: When a pure sample of tert-butyl bromide is analyzed by gas chromatography, two components are usual...

A: (a) The gas chromatography conditions do not have any reactive molecules that can react with the ter...

Q: Q.30. Calculate the heat of combustion AH,°, 298K of solid oxalic acid (C2H2O4, s) at 25 °C and atmo...

A: The combustion of oxalic acid produces CO2 and H2O

Q: Name the following attachement:

A: The given compound is,

UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or  ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.