What    is    the    final    concentration    of    my    salt    solution    if    I    add    80ml    water    to    20ml     of    a    10%    NaCl    solution?      How    do    I    prepare    250    ml    50mM    Tris    solution    from    a    1    M    Tris    solution?

Q: A solution is formed by mixing 50.0 mL of 9.8 M NaX with 50.0 ml of 3.8 x 103 M CUNO,. Assume that C...

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Q: What happens to a reaction at equilibrium when there is an abundance of sodium carbonate and calcium...

A: Na2CO3 +CaCl2 <--------> 2NaCl + CaCO3  When the reaction is at equilibrium  Rate of forward r...

Q: Calculate the standard enthalpy change for the reaction 2C8H18() + 1702(g) -16CO(g) + 18H20(). Given...

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Q: What is the theoretical yield of chromium that can be produced by the reaction of 40.0 g of Cr203 wi...

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Q: Give four major contributions of Jabir ibn Hayyan to the study of the central science

A: Jabir (known as Geber in western history) is generally known for his commitments to science. He unde...

Q: 4. Determine the empirical formula of a compound with the following composition by mass: 48.0 % C, 8...

A: 4. Given, Molar mass of the compound = 200 g/mol Mass % of C = 48.0 % = 48.0 g Mass % of H = 8.0 % =...

Q: A 22.0 g block of copper at 45°C absorbs 2.50 kJ of heat. Given the specific heat of Cu is 0.385 J/g...

A: Given data of the following, m=22.0 g T1=45℃ Final temperature T2= ? heat q=2.50 KJ = 2500 J Specifi...

Q: 4.00 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have...

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Q: A hydrocarbon of unknown structure has the formula C8H10. On catalytic hydrogenation over the Lindla...

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Q: Heating copper(II) oxide at 400°C does not produce any appreciable amount of Cu: CuO(s) SCu(s) + 0 A...

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Q: Glycerol gave a positive result to (acrolein test). When Benedict’s reagent was added to Sucrose + H...

A: Acrolein test is used for the detection of presence of glycerol or fat. Benedict test is used for th...

Q: the combustion of 0.0272 mole of a hydrocarbon produces 1.9609 g h2o and 3.5927 g co2. what is the m...

A: Given,  Combustion of 0.0272 mole of a hydrocarbon produces 1.9609 g H2O and 3.5927 g CO2. Then, fin...

Q: What are the structures of threonine in each part of its titration curve? Give a clear handwritten a...

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Q: A 220 g block of copper at 45°C absorbs 2.50 kJ of heat. Glven the specific heat of Cu is 0.385 J/g-...

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Q: Molarity : (The molar concentration of a solution of a solute species ) is the number of moles of th...

A: We have to tell whether the statement is true or false.

Q: The product of saponification is called salt. Explain why.

A: Reverse esterification that is the hydrolysis of ester compound is called saponification reaction . ...

Q: Calculated Data for the Equilibrium Constant Kc: TABLE 3 - Concentrations for tube 1 Fe3+ HSCN FESCN...

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Q: Show calculations for making 1X TAE gel running buffer and 1.25% agarose gel for your experiment.

A: Buffer is a solution that tends to maintain pH of the solution when acid or base is added to it. Per...

Q: 7.37 Which product (or products) would you expect to obtain from each of the following reactions? In...

A: Given reactions are : Complete the reactions = ?   

Q: 1. An alcohol contains 64.87% Carbon, 13.57% Hydrogen, and the balance is Oxygen. Calculate the Empi...

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Q: The reaction between aluminum and iron(III) oxide can generate temperatures approaching 3000°C and i...

A: Mass of Al = 118 g Mass of Fe2O3 = 601 g

Q: A bicyclist is stopped at the entrance to a valley, as sketched below: E Where would the bicyclist h...

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Q: The van der Waals equation of state was designed (by Dutch physicist Johannes van der Waals) to pred...

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Q: Where would the bicyclist have the highest potential energy? Where would the bicyclist have the lowe...

A: ANSWERS:- 1) Highest potential energy will be found at highest point only. Here F is the highest poi...

Q: Be sure to answer all parts.   Draw the products of the reaction of cyclopentanone with ethylidenetr...

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Q: Directions: Use solution stoichiometry to answer the following problems. Show your complete solution...

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Q: tow much heat (kJ) is evolved when 4.50 g of Fe203 is reacted with excess carbon monoxide using e203...

A: Fe2O3  (s) + 3CO (g)----> 2Fe(s) + 3CO2(g) Mass of Fe2O3 = 4.50 g ∆Horxn = -24.8 kJ/mol  

Q: 1) NABH,, ELOH 2) H°, H,O

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Q: Multiple Choice 65.39 amu 1.09 x 10-22 g 1.661 x 10-24g 65.39 g 3.94 x 1025

A: Mass of 1 mole of Zn = atomic mass of Zn  1 mole of Zn atoms = Avagadro number = 6.022 x 1023   Atom...

Q: After performing an experiment on density. You found out that the actual density and the calculated ...

A: The experiment performed was the determination of density of a substance.

Q: 2. Using the data in Part B, calculate the following and complete the table below. (See pg 5 in Lab ...

A: Answer: Dissolution process of NaHCO3 in water is an exothermic process and in the question we have ...

Q: List at least three (3) physical or spectroscopic methods that can be used to differentiate between ...

A: In analytical chemistry, qualitative analyses deals with identification and quality of the compounds...

Q: Be sure to answer all parts. How many moles of cobalt (Co) atoms are there in 9.00 x 10° (9.00 billi...

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Q: Be sure to answer all parts. The reaction between aluminum and iron(III) oxide can generate temperat...

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Q: A bicyclist is stopped at the entrance to a valley, as sketched below: A Where would the bicyclist h...

A: The potential energy is the point at which the bicyclist has the highest energy. It is at point F. T...

Q: A discovery revealed a parchment fragment that had about 64% as much 14C radioactivity as does plant...

A: Answer: This question is based on the radioactive decay and all the radioactive decay reactions are ...

Q: Describe a saturated system.

A: Solubility The amount of solute present in 100 g of solvent is known as solubility. The solubility o...

Q: Given the thermochemical equation 2502(g) + O2(9) - 2503(9), AH'rxn= -198 kJimol, how much heat is e...

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Q: Activity 2 HEATING CURVE OF ETHANOL E BOILING F GAS AV LIQUID B MELTINGC -115-- SOLID TIME T'E'N°A Q...

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Q: Which of the following processes is exothermic, given the following: N2(9) + 202(9) - N204) AH"= 9.6...

A: Both the given reaction are endothermic  reaction... N2 (g) + 2O2 (g) - - > N2O4(l)  Enthalpy of ...

Q: draw all the possible sterisomers of the reaction

A: Carbonyl compound prefer to undergo nucleophilicaddition reaction due to its electrophilic character...

Q: r answer below the formula. Identify the classification of each structural formula of biomolecules. ...

A:   Biomoelcules:   All living bodies are composed of several lifeless substances which are present in...

Q: State the assumptions for the following expressions to apply: dH = dq Group of answer options Con...

A:   Enthalpy, H  H = U + PV. The enthalpy per unit mass is the specific enthalpy, h = u + pv. It is a ...

Q: Suppose 1.34 g of copper(II) nitrate is dissolved in 150. mL of a 50.0 m M aqueous solution of sodiu...

A: Dear student since you have asked multiple questions but according to guidelines we will solve 1st q...

Q: [N:(g) + 3B12(g) = 2NB1:(g); AH = -103.7 kJ] Consider this reaction. What will 1 happen if pressure ...

A: Consider a reaction, A(g)+B(g)⇌P(g) Let the reaction is happening in a closed container fitted with ...

Q: Which of the following is NOT true about equivalence point and endpoint? a. The endpoint approximate...

A: Endpoint and equivalent point in a titration are two very important point. Here we have to determine...

Q: The preparations of two aqueous solutions are described in the table below. For each solution, write...

A: Given table is :   

Q: Wh e following desribes Exuoida A Enzymes that eleaves starch and glyeegen at the a -6 linkages 4 En...

A: According to guidelines we supposed to answer only three  Please post rest of the parts as separate ...

Q: A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 6....

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Q: The decomposition of XY is second order in XY and has a rate constant of 7.00×10−3 L mol−1 s−1 at a ...

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