A gas tank with a volume of .722 dm3 contains 1.50 g of hydrogen gas at a temperature of -5 °C. What is the pressure inside the tank? A 2310 kPa B 418 kPa C 1310 kPa D 655 kPa

Q: Chemical Equation: Fe + H2O → Fez04 + H2 3. Compute for the AG of the equation: kJ/mol (Write your…

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Q: (C) Classify nuclei of isotopes 1°B, "B, (atomic number 5) 12C, C (atomic number 6), as boson or…

A: An atom with odd number of electrons +protons+neutrons  is said to be fermion.  An atom with even…

Q: 1.0 L buffer solution is 0.250 M H*C_{2}*H_{3}*O_{2} and 1.050MLi*c_{2}*H_{3}*O_{2} Which of the…

A: A buffer solution has a weak acid solution and it's conjugate base solution.

Q: Propose structures and fragmentation mechanisms corresponding to ions with mlz 57 and 41 in the mass…

A: Given,

Q: For the balanced redox equation: H2O + H3AsO3 + I2 ---> H3AsO4 + 2HI      Reducing agent -…

A: Given reaction, H2O + H3AsO3 + I2 ---> H3AsO4 + 2HI Then,

Q: 4. Complete the multistep syntheses below. OEt

A: In this question, we will synthesized the final products by using all the reagents, and this is a…

Q: 13.7 mL of CO2 is held at 11.7atm and 20°C in a fire extinguisher.  When the extinguisher is used,…

A: Here pressure, volume and temperature all are changing to combined gas law would be used to…

Q: What volume of 0.500 M HNO2 should be added to 500 mL of 0.750 M KNO2, so that the pH of the…

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Q: What mass of water is produced from the complete combustion of 3.20×10−3 gg of methane? Express your…

A: We have to calculate the amount of water is produced from the complete combustion of 3.20×10−3 g of…

Q: Determine the Ka of a 0.10-M solution of hydrogen sulfate ion, HSO,¯, that is 1% ionized. Hint:…

A: we need to find Ka of the solution

Q: Draw a plausible mechanism for the reaction shown below. Determine the major product and provide…

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Q: A. Determination of Solubility and Ksp 1. Consider 50 mL of a saturated solution of PbC12 at 250C.…

A: Given :  Volume of saturated solution = 50 ml  Mass of solid PbCl2 obtained = 0.54 g

Q: A+B C+D In this equation A, B, C and D stand for some unknown chemical formulas.) Here is an energy…

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Q: Why is complete clotting necessary during serum preparation?

A: Serum : It is the part of bodily fluid which is clear in appearance, for blood it does not include…

Q: A solution containing 0.370 g the mineral Iron ( 55.84 g/mole) produced ferrate ion (Feo 4 -2 = Mw…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: What is the OH⁻ concentration in this solution 1.05 M C₅H₅N?

A: Here we are required to find the concentration of hydroxide ion in 1.05M solution of pyridine

Q: Convert 750 ppb Al(III) to molar units

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Q: Explain why it is needed to filter the solvent before introducing it to the HPLC system

A: Basically there are following two reasons for using filtration during HPLC sample preparation are…

Q: + CH3NO2 NAOH 1) LDA, THE 2) CH3I EtO OEt 1) NaOEt, E1OH LDA 2) CH3CH2B H30+ H20 A

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Q: 2. Name each of the fo llowing acids: OH a) CH;CH,CF,CH,COOH b) CH3-CH2-ČH–COOH СООН „COOH d) ОН…

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Q: Predict the reactants or products of the following reactions, and balance the equations.

A: Balanced chemical equation, it can be define every reaction in which number of atoms of all the…

Q: Chemical Equation: NO2 + H2O → HNO2 + HNO3 (BALANCE THE EQUATION FIRST) 1. Compute for the ΔH° rxn…

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Q: In a 0.24M aqueous solution of acetic acid (CH3CO2H), what is the percentage of acidic acid that is…

A: percentage of acetic acid dissociated is to be calculated

Q: Silicon is essential to the computer industry as a major component of semiconductor chips.It has…

A: Isotopes are those atoms of an element, that have same atomic number and different mass number.…

Q: Calculate the value of E°cell for a galvanic cell based on the following half reactions.  Be sure to…

A: Eocell can be calculated using formula : Eocell  = Eo ( cathode ) - Eo ( anode )

Q: In the Iron REDOX titration, the specific which specific indicator \ produces soluble red-colored…

A: In the iron redox titration the thiocyanate when used as an indicator gives a soluble red coloured…

Q: Which of the following is not standardized against KHP? Section а. NH3 b. NaOH с. Н.SO4

A: KHP ( Potassium hydrogen pthalate ) is acidic in nature , so it can be used to standardize basic…

Q: What is the standard electrode potential of these redox couple at 25°C? 1) Fe/Fe3+ 2) Cu/Cu2+ 3)…

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Q: Calculate the value of E°cell for a galvanic cell based on the following half reactions.  Be sure to…

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Q: What is the mass in grams of 1.13x1015 molecules of CS2 ?

A: Using Avogadro's number first we convert molecules to moles. Then using molar mass , we can…

Q: 5. Determine whether the following are acidic, basic, or neutral: a. [OH ] = 2.5 × 10-7 b. [OH] =…

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Q: A 0.100 M solution of HOBr has a pH of 5.343. What is Ka for HOBr?

A: Ka is the dissociation constant of an acid. It measures the strength of an acid.

Q: Which image shows 3-hexyne? A. II В.

A: Alkynes: Alkynes are the hydrocarbons containing Carbon Carbon triple bond (-C≡C-). Given, Which…

Q: contains 20 mL of water with an initial temperatu na mass of 1.388 grams was placed inside maki…

A: Given,  Volume of water = 20 mL Density = 1.0 g/mL Mass of water = Volume × density      = 20 ×1.0 =…

Q: 11. Consider the following reaction and its AG-AG• at 25.00 °C. 2Ag(aq)+Cu(s) 2Ag(s)+Cu*(aq) AG…

A: For given reaction and given ∆G° value , E°cell and K can be calculated using relations with ∆G° .

Q: How did you get 2.69 x 10-12 ? When I did the caculation I got -5.16 x 10-22

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Q: Predict two likely products of the following reaction. CH3 Br NaOC(CH3)3

A: In this question we have to tell the product of the reaction.

Q: relative abundance of very close to 1:1. The other had M+ of 112 and M+2 of 114 with a ratio of…

A: Here we are required to provide explanation as bromination of benzen using  FeCl3 produces Two…

Q: Analysis of nitrogen present in organic materials could be analyzed by converting nitrogen to…

A: Analysis of nitrogen present in organic materials could be analyzed by converting nitrogen to ??

Q: 1. How is the carboxyl group related to the carbonyl group and the OH group? b. How is the amide…

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Q: 1. Which is more reactive? a. carboxylic acid b. acid anhydride c. acid halide d. amides e. esters…

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Q: Make a written report with examples of how equilibrium applies to everyday life.

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Q: The great French chemist Antoine Lavoisier discovered the law of conservation of mass in part by…

A: Answer: Ideal gas equation is shown below: PV=nRT Here: P=pressure of the gasV=volume of the…

Q: H.

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Q: What is the concentration of an unknown sample if its optical rotation is +28.50 deg mL/dm g. Its…

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Q: What is the experiment isolation of casien about? how is it relevant to

A: The isolated casein is insoluble in water, alcohol, and ether, but dissolves in alkaline and some…

Q: Which of the following is NOT trie about REDOX titration? I. It is type of titration in which the…

A: Redox reactions are the ones in which one reactant gains electrons whereas the other looses…

Q: 1. LDA 2. Br

A: At first, LDA (base) will abstract acidic proton and in the second step, negative charge will attack…

Q: A laboratory technician is preparing a stock solution of KOH for use in some General Chemistry lab…

A: Given; mass of NaOH = 143.4gm So, Moles of NaOH = mass/molar mass molar mass of NaOH =  39.99gm/mol…

Q: Is the acid-base neutralization of HCl and NaOH spontaneous or non-spontaneous at 37°C? Given delta…

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.