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Q: Explain the principle behind FRAP (ferric reducing antioxidant power) assay. What about ABTS Assay?

A: We have to tell principle behind FRAP and also about ABTS Assay.  2,2'-azino-bis(3-ethylbenzothiazol...

Q: 1. Please indicate the number of distinct 13C and 'H NMR signals you would expect to see for each of...

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Q: when 5.00 grams of ammonium chloride, NH4Cl is added to 100 ml water the temperature drops by 4.2 C,...

A: We have to predict the temperature change.  

Q: Check the box next to each molecule on the right that has the shape of the model molecule on the lef...

A: First step to solve this problem to determine the hybridization of the central atom followed by the ...

Q: (d) Describe three of the functions of the matrix in fibrereinforced composites.  (e) With the aid ...

A: d) The functions of the matrix in fibre reinforced composites are,

Q: What is the hybridization state of the central carbon atom in the structure below? A molecular struc...

A: The detail solution is given below

Q: Check the box next to each molecule on the right that has the shape of the model molecule on the lef...

A: Given structure  in the box is square planar  shape   

Q: Present each answer in significant figures 14×3.21 2×103- 115×104 1,000 ×0.003

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Q: Which of the following liquids will be immiscible with water: methanol, ethanol, acetone, cyclohexan...

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Q: ... Note: All numeric answers must be given with correct number of significant figs. Unit conversion...

A: Standard data: 10-6 s = µ s    103 L = 1 m3

Q: 6-what is difference between Transmittance and absorbance in spectroscopy?

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Q: Part A A gas is compressed from an initial volume of 5.50 L to a final volume of 1.24 L by an extern...

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Q: If you have 6 mL of acetone, how much water is needed to be mixed in to make a 7.5% acetone-water so...

A: Given, Volume % (V/V) = 7.5 % Volume of the solute (acetone) = 6ml Volume of the water needed = ?  

Q: Calculate the enthalpy of combustion per mole when 4.10 g of methane burns in oxygen and 236 kJ of h...

A: Enthalpy of combustion means the heat energy is given out when one moles of any substance completely...

Q: 3 Rubidium (Rb) adopts a body-centred cubic, BCC, structure at a pressure of 1 atm. Upon application...

A: (i) The main factor for transformation from BCC to FCC is the decrease in spacing among atoms due to...

Q: - The distance from the earth to the moon is approximately 240,000 miles (mi). The peregrine falcon ...

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Q: Explain about role of gas detection system in Laser.

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Q: he s 3C molecule still has a lot of energy available. Where, specifically, is this energy located in...

A: the energy of 3-carbon molecule is located in the electrons.

Q: Explain Fourier transforms NMR?

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Q: 1 mol of ammonia decomposes to 0.045 moles of H2 and 0.015 moles of N2 at a constant  P=1 atm and T=...

A: Finding mole fraction and Thus partial pressure of each gaseous Reactant and Product. 2NH3 (g) <-...

Q: What is the equivalent weight of H2SO4?

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Q: If the work done to compress 29 g of helix gas in 2 mL tube is 612 J releasing 209 J of heat to the ...

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Q: as SN1, SN2, El or E2. Mal

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Q: The amount of heat energy released when zinc metal reacts with hydrochloric acid: Zn(s) + HCl(aq) → ...

A: In a process, if heat is absorbed then the sign of ∆H will be positive. 

Q: 7. A fictitious element which we will call dearbornium (Db) is made up of two isotopes. A sample of ...

A: Given that : For the element dearbornium (Db) in a sample : Number of atoms of 292Db = 2233  Number ...

Q: Read the meniscus with the uncertain error range (+/-). ml

A: According to the given image, the meniscus lies in between 5 mL - 6 mL. 

Q: Problem Set – CHANGE IN ENTROPY Calculate the standard entropy changes for the following reactions a...

A: delta S0 for  H2 & Cl2 & HCl are 0.13 , 0.22 , 0.19 kJ/K mol-1 respectively.

Q: Comment on whether ΔH and ΔS favor spontaneity of the following reactions. Explain your reasoning! a...

A: Spontaneous reaction are those which occur in forward direction and favour the formation of product.

Q: Write the condensed structural formula of the following: 1. 3- Hexene-1-Yne 2. Cycloheptene 3. 2-...

A: The condensed structural formula of the above compounds are given below

Q: 7. The following 3-step mechanism has been proposed for the reaction of chlorine and chloroform: CI,...

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Q: a. neutrons but a different number of protons b. neutrons as electrons c. protons but a different nu...

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Q: The equation gNa = 1/RNa describes: O a. Sodium membrane inertia O b. None of them Ос. С. Sodium mem...

A: 1 ) sodium membrane conductance is correct answer

Q: Caproic acid (C5H11coOOH) is found in small amounts in coconut and palm oils and is used in making a...

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Q: Draw the molecule from the incorrect name given below, then enter the correct IUPAC name in the answ...

A: Given,  3-propylpentan-1,5-dione

Q: Identify energy exchanges as primarily heat or work. Drag the items into the appropriate bins. Reset...

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Q: Directions: Illustrate the sharing of electrons of each covalent compound using the Bohr Model. Appl...

A: Bohr Model states that the electron ( negatively charged ) orbits the nucleus ( positively charged) ...

Q: is the weight of a pure substance which is chemically equivalent to or reacts with a fixed volume of...

A: (a) Mole - A Mole is defined as the amount of substance that contains exactly 6.022 x 1023 elementar...

Q: What is the standard boiling, freezing and melting point of water?

A: Boiling point is the temperature at which vapour pressure of the liquid is equal to the atmospheric ...

Q: Can you please correct my table. I am sure I have gotten some wrong answers. Possible solvents: wa...

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Q: what is difference between Transmittance and absorbance in spectroscopy?

A: The transmittance measure how much light is transmitted when light is pass through the sample but ab...

Q: If a 5.00L of a 5.0M solutin sodium chluride CNCCI) is Ciluted to a volume cÁ 10.0L. what is the new...

A: We know the dilution  equation: => M1V1 = M2V2 where, M1 is the  concentrated molarity V1 is the ...

Q: what is an alkane?

A: The compounds that are only composed of carbon and hydrogen are known as hydrocarbon. They can also ...

Q: what is difference between Transmittance and absorbance in spectroscopy?

A: The main difference between transmittance and Absorbance is that transmittance measure how much ligh...

Q: A 1.20 gram sample of a hydrated salt is heated to a constant mass of 0.80 gram. What is the percent...

A: Given,  Mass of hydrated salt = 1.20 g  Mass of anhydrous salt = 0.80 g  What is the percentage by m...

Q: List all possible methods for the quantitative determination of glucose solution: A) Polarimetry B) ...

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Q: Part A The change in internal energy for the combustion of 1.0 mol of octane at a pressure of 1.0 ba...

A: Enthalpy change is related to the pressure-volume work and internal energy.  This can be expressed m...

Q: State the five (5) important parameters of phase diagrams.

A: Generally in a phase diagram temperature on x-axis versus pressure on y axis is plotted. It is a gra...

Q: The electromotive force of the following cell at 298 K is 1,2272 V: Zn(s) |ZnCL (0,0050 mol kg') |Hg...

A: The overall cell reaction can be written as:   Zn(s)+Hg2Cl2(s)↔Zn2+(aq)+2Cl-(aq)+2Hg(l)

Q: If I initially have a gas at a pressure of 12 atm, a volume of 23 liters, and a temperature of 200 K...

A: Given, Initially Pressure of a gas (P1) = 12 atm Volume of a gas (V1) = 23 L Temperature of a gas (T...

Q: Handwritten explaination) Describe orbitals used in bonding and bond angles in the following compoun...

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.