A gas made up of atoms escapes through a pinhole 0.799 times as fast as Kr gas. Write the chemical formula of the gas.

Q: A 25.00 mL sample of acetic acid (CH3COOH) is titrated to the equivalence using 31.08 mL of 0.1978 M...

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Q: Answer no. 5 only

A: The unit cell for tin has tetragonal symmetry, with a and b lattice parameters of 0.583 and 0.318 nm...

Q: Explain the reason behind why oils leave a translucent spot on paper even after drying, while ethano...

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Q: What is the percent yield of CO 2 if the reaction of 10.0 grams of CO with excess O 2 produces 14.0 ...

A: Using stoichiometric ratio we can determine how many moles of CO2 produce and from that we can calcu...

Q: Choose the compound of molecular formula C7H13B1 that gives each alkene shown as the exclusive produ...

A: Alkyl halide on elimination gives alkene as final product.  

Q: 0.154 nm. Use the above mention atomic radius. Please explain the solution as well

A: Given that, the atomic radius of Mo (110) is R = 0.154 nm. We have to calculate the planar density o...

Q: Relating Density to Crystal Structure 1. Show that the atomic packing factor for FCC is 0.74. 2. Sho...

A: Given,  The calculation for the atomic packing factor for BCC(Body centered cube) is:

Q: What is the pH of a solution made by mixing 40.0 mL of 0.035 M KOH (aq) and 91.3 mL of 0.031 M Sr(OH...

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Q: Calculate the pH that results when the following solutions are mixed: 35 mL of 0.20 formic acid, 55 ...

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Q: 4. Rhodium has an atomic radius of 0.1345 nm and density of 12.41 g/cm³. Determine whether it has an...

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Q: Which structural feature of Tryptophan and Tyrosine allows to absorb UV light? Is Aromatic structure...

A: Since precise protein quantitation is vital for all examinations connected with protein studies, var...

Q: in the synthesis of benzocaine: explain how any unreacted p-aminobenzoic acid was removed in the re...

A: This problem can be solved based on your reaction and product obtained. Carboxylic acids are normall...

Q: Calculate the pH of a 7.51 M solution of HBRO. The K, of HBRO is 2.50 x 10. Express your answer usin...

A: Given data :  Initial concentration of HBrO = 7.51 M  Ka = 2.50 × 10-9   

Q: Can the combination of NH3 and NH4Br form a buffer? Use appropriate reactions to explain why or why ...

A:                                    Answer  Can the combination of NH3 and NH4Br form a buffer The bu...

Q: 3/5 Gaseous butane (CH;(CH2),CH,) reacts with gaseous oxygen gas to produce gaseous carbon dioxide (...

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Q: Suppose a 250. mL flask is filled with 1.0 mol of Cl, and 1.8 mol of HCl. The following reaction bec...

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Q: A 25.0 g block of copper (specific heat capacity 0.380 J/g･°C) at 81.2 °C is placed into 500.0 g of ...

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Q: I need help calculating the concentration of acid in each buffer solution show in the second picture...

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Q: Give the net ionic equation for the reaction (if any) that occurs when aqueous solutions of sodium s...

A: Given that : Sodium sulfide = Na2S Iron(II) Nitrate = Fe(NO3)2

Q: Cu:O + c c Cu +co2 CO2 -> Cu = Cu = %3D C = C =

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Q: Aqueous sulfuric acid (H,SO,) will react with solid sodium hydroxide (NaOH) to produce aqueous sodiu...

A: Answer: 18.8 g

Q: 1.An uneven sharing of electrons between atoms indicate _________. * a.Bonding b.Coupling c.Electron...

A: Answer: In covalent bond two atoms share the electrons to form a bond. pH of a solution is always eq...

Q: Consider the structure of but-2-yne, if it undergoes halogenation with Cl2, which of the following f...

A: The but-2-yne undergo halogenation with Cl2 gives

Q: Check Your Understanding on Crystal Structure 1. Differentiate crystal structure, crystal system, an...

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Q: Define each stereocenter as either (R) or (S). If the molecule does not have a stereocenter select "...

A: ->Each chiral center has specific configuration R or S.  

Q: Consider a buffer solution that contains 0.25 M CgHalCO2H){CO2K) and 0.15 M COH4(CO2K)2. pk (CH4(CO2...

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Q: If the dielectric constant of Si is 11.7, and binding energy of Sb donor is 0.039 eV and that of As ...

A: Given : the formula of binding energy

Q: Nitroglycerin is a dangerous powerful explosive that violently decomposes when it is shaken or dropp...

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Q: Describe   a   procedure   to   synthesize   the   ester   ethyl ethanoate, starting   from   ethene...

A:   Ethene upon hydration in presence of acidic medium gives ethanol  Ethanol further oxidised into e...

Q: Hannah needs to make a solution of KMnO4 to be used in a chemistry experiment. On the shelf in her s...

A: Basically when we need to make solution of another lower concentration from a higher concentrations ...

Q: Is the precision of your two trials within 5 %?. Support your answer with calculations

A: In order to analyze the precision of an experiment, we calculate the Percent relative standard devia...

Q: Is the major organic product of the following reaction. OHC. OHC. OHC. Br PdCl PPhy. EtN OHC. OHC. B...

A: ->alkene give coupling reaction with vinyl or benzyl bromide.  

Q: 4. Does growth of corals: Ca²+ + CO3²- → CaCO3(s) cause atmospheric CO2 to increase or decrease? Exp...

A: Growth of corals will decrease the atmosphere CO2

Q: of chemical reactions? Select one: a.

A: Rate of chemical reaction is change in concentration of reactants per unit time interval.   

Q: In the beginning of the procedure, you will combine 1g of 3-nitrophthalic acid along with 2 mL of 8%...

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Q: What number of molecules (or formula units) are present in 8.26 g of each of the following compounds...

A: Given- Weight of substance=8.26g

Q: Define alkynes.

A: Answer: Different type of hydrocarbons are present in nature and we classify them on the basis their...

Q: Solve all parts otherwise I will downvote

A: The extent of the quantity of a substance that moves in a specific volume of a solvent is expressed ...

Q: 6. Here we have the molecular orbital energy diagram for this chlorophyll molecule. Match the absorp...

A: λ(max) for the absorption is inversely proportional to the energy gap between the two levels.

Q: Describe the relationship between each of the pairs of isomers shown by recording Constitutional, Co...

A: -> After flipping we get conformation isomer.  

Q: 4 Al (s) + 3 O2 (g) → → 2 Al203 (s) How many liters of O2 gas at 40 °C and 0.70 atm are required to ...

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Q: (C) Diels-Alder, [4+2] cycloadditions of diene and dienophile and [2+2] cycloaddition COME HO. heat ...

A: Cycloaddition reaction is a pericyclic reaction in which two pi bonds are broken while two sigma bon...

Q: 2. Calculate the mass density of air at the surface of the Earth using the ideal gas law and assumin...

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Q: Which of the following expressions is the correct equilibrium-constant expression for the following ...

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Q: Use the observations about each chemical reaction in the table below to decide the sign (positive or...

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Q: :B H-O R, HO HO H RC-C RC-cH ŚCOA ŚCOA ŠCOA 15. Explain which class of enzyme being represented. The...

A: This is an example of fatty acid metabolism in which fats are converted into energy by the formation...

Q: Rank the following ions in order of decreasing ionic radius (largest → smalle Na*. Mg²+, S²- 0²-, F¯...

A: Given -  Na^+, Mg^+2, S^-2, O^-2 ,F^-

Q: cell 5. Copper crystallizes in a face-centered cubic structure. What is the mass of one unit? What i...

A: Given : copper crystallizes in FCC

Q: calculate the theoretical pH of each solution you tested. What is unique about a mixture of a weak a...

A: In the above question, some solution of weak acid,diluted weak acids,salt of weak acid,and diluted s...

Q: Br H opp. Confiq at Stereoienten HI enunthomers R BS ienan H Br Br H Br diastereomers R Br meso form...

A: Here we have to identify enantiomeric pair stereo isomers and diasteromeric pair streoisomers. Enant...

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.