A high altitude balloon has a volume of 2.43 L at 755 torr and 20.1 C. What is the volume at 1.00 torr and -10.1 C?

Q: What is the pH of an aqueous solution with .5 M NH3 & .45 M NH4Cl?  Kb=1.78 x 10-5

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Q: In the analysis of 0.8972 g of an impure Cl- sample (35.45 g/mol), 1.399 g of AgCl (143.32 g/mol)…

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Q: what are likely possibilies for X if Xn + Cl -> XCl2 can you help explain how to solve this? Would…

A: Given:  Xn + Cl -> XCl2  To determine the likely possibilities for X

Q: How long will it take for the concentration of A to decrease from 0.850 M to 0.351 for the reaction…

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Q: What is the time required to produce Select one: a. 3.10 hours b. 2.29 hours c. 1.10 hours d. 4.86…

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Q: 2) A 30.00 mL sample of an unknown H3PO4 solution is titrated with a 0.100 M Ba(OH)2 solution. The…

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Q: galvanic cell is constructed in which a Pt | Fe2+ Fe3+ half-cell is connected to a Cd2+ | Cd…

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Q: Vide an en Br show the Br AIBR3

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Q: 1.1 Fill in the missing (correct) words only: (a) In general, as behavior increases. (b) For an…

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Q: What is the graphical or expanded formula of Alkane, Alkene and Alkyne if n=4?

A: General formula  of Alkane = CnH2n+2 General formula of Alkene = CnH2n General formula of Alkyne =…

Q: How many mL of 3.000 M Mg(OH)2 solution are needed to react with 2.000 L of 3.000 M H3PO4 ?   2…

A: Given,  2 H3PO4   +   3 Mg(OH)2    →   6 H2O   +   Mg3(PO4) The volume in mL of 3.000 M Mg(OH)2…

Q: 26. A 1.500 g sample of iron ore, labeled A, was processed accordingly to give 0.5215 g of pure…

A: Here we are required to find the percentage of Fe and ferric oxide present in the iron ore B having…

Q: How does temperature affect the ability of Catalase to speed the decomposition of hydrogen peroxide?

A: Temperature has important role in the decomposition speed of hydrogen peroxide by catalase.

Q: Describe how temperature change, both positive and negative, is a determinant of heat.

A: To describe: How temperature change, both positive and negative, is a determinant of heat.

Q: this one, need the acid/ base tables in the book (Appendix E & F). tch each buffer system with the…

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Q: What is the mass (in grams) of a CO2 gas sample that occupies 5.71 L at STP

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Q: Give a clear handwritten answer of all sub parts ..? Explain

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Q: Jon 24 The colour exhibited by Bromo cresol indicator in acidic and basic medium is

A: Indicator have different colour in acidic and basic medium

Q: 3. Calculate cell voltages under the following conditions at 25°C: a) Zn Zn" (0.50 M)I Cư" (0.10 M)|…

A: In this question, we have to calculate the cell voltage for the given values.

Q: H2 Pd H2N OH NO2 SO3 H2SO4

A: OH is Ortho and para directive but NO2 is meta directive.

Q: A multivitamin sample has a label claim of 500 mg ascorbic acid (176.12 g/mol). According to quality…

A: Ascorbic acid (Vitamin C) is a monoprotic acid with formula HC6H7O6.  Hence the balanced equation…

Q: Calculate the pH of the solution that results when 32.0 mL of 0.1980 M NH3 is (This problem requires…

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Q: 1.1 Fill in the missing (correct) words only: (a) In general, as behavior increases. (b) For an…

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Q: Draw the product of the reaction of cyclohexene with KMNO4 and NaOH at low temperature.

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Q: 18) In one of your experiments, you used a Grignard reaction to make a carboxylic acid. Br 1) Mg 2)…

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Q: In the parallel universe, the thermodynamic data are different but the thermodynamic law are the…

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Q: An experiment was carried out by reacting cyclopentanone and water in the presence of potassium…

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Q: Calculate the pH for each case in the titration of 50.0 mL of 0.100 M HCIO(aq) with 0.100 M KOH(aq).…

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Q: provide appropriate names for the following molecules

A: Rules to IUPAC name:   1. Search and name the longest continuous carbon chain.  2. Find and name…

Q: 22. Draw the expected major product of the following reaction: HBr 3. Draw the expected major…

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Q: The speed of a chemical reaction * O is constant no matter what the temperature is. O is independent…

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Q: For the complex [Pd(NO)4]Br4, what is the number of unpaired electrons in the complex based on…

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Q: 5. For the elementary process: N2O5(g) → NO2(g) + NO3(g) The activation energy for the forward…

A: Activation energy: When the reactant molecules convert into the products, they required the minimum…

Q: For the reaction Co(g) + 3H2(g)CH4(g) + H20(g) AH° = -206.1 kJ and AS° = -214.7 J/K The maximum…

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Q: 9. What is the relative supersaturation of Ag2SO4 if its concentration at a given instant is 0.0750…

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Q: C2H6 O2 -> H2O CO2

A: According to the Law of conservation of mass " all atoms of different elements must be equal on both…

Q: Cassandra builds a galvanic cell using a zinc electrode immersed in an aqueous Zn(NO3)2 solution and…

A: Given,  zinc electrode immersed in an aqueous Zn(NO3)2 solution and an copper electrode immersed in…

Q: What is true about the IR spectrum of 2,3-dimethyl-2-butene?

A: The details about IR spectrum of  2,3-dimethyl-2-butene is given below

Q: Question 8 How do we keep relative supersaturation low by controlling solute concentration? A…

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Q: Radium (Ra226, t1/2 = 1622 years) decays into radon (Rn222, t1/2 = 3.82 days), which is a monatomic…

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Q: III. Supply what is missing in the table below. ( FORMULA NAME FORMULA NAME Trisilicon octaphosphide…

A: The chemical formula and names are as follows-

Q: 3. Calculate cell voltages under the following conditions at 25°C: a) Zn lZn* (0.50 M)lcư* (0.10…

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Q: The equilibrium constant Kc for the reaction below is 6.555×10-5  The initial composition of the…

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Q: Amino Acids Properties: Match the following specific "R" groups of amino acids to the descriptions.…

A: Given: R groups of amino acids are provided below:  -CH2-CH2-CH-CH3 -CH2-COO- - benzene…

Q: A) How many grams of Mgl2 is present in a 0.4745 g sample that is 53.21% Mgl2 (278.11 g/mol)? B)…

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Q: Some Radioactive sotopes Useful in Medical imaging Mode of Ral dalaging Brin tr hatpe Decay Ch EC. I…

A: Given,  Half-life of I-131 = t1/2 = 8.04 days Initial amount = [N]0 = 79.9 mg  Final amount after…

Q: equilibrium. You can leave out water se Write the chemical formulas ef the species that wil act as…

A: Salt of strong acid and weak base is acidic and vice-versa.

Q: 1. Use the calculation of E° to determine which of the following reaction is spontaneous under…

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Q: What do you call the number that summarizes the factors affecting the particle size of a precipitate…

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Q: Assume the concentration silver nitrate and gold(III) nitrate are each 1 M. Write the standard cell…

A: Please open the attachment.

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.