Chemistry

If a catalyst is used during the reaction of an ester, which of the following can happen?The reaction will reach equilibrium faster.The reaction will reach equilibrium slower.The catalyst will increase the amount of ester produced during the reaction.The catalyst will reduce the amount of ester produced during the reaction.
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calculate the ka of a 0.010m acid solution which is 19% ionized group of answer choices 5.4 x 10-4 1.9 x 103 4.5 x 10-4 5.4 x 105 1.9 x 10-3 4.5 x 10-3
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2) why is it important to maintain the reaction temperature low and the addition of nitric acid-sulfuric acid mixture carried out slowly?
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A gas sample at constant pressure and temperature filled with Helium gas had a volume of 221 mL and 4.00 moles. If the volume is increased to 500 ml what is the number of moles of Helium gas that could occupy the container? 0.11 K 9.05 kPa 0.11 kPa 9.05 mol
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What is the percent of Ca inCa(C2H3O2)2?(Ca = 40.08 g/mol, C = 12.01 g/mol,H= 1.01 g/mol, O = 16.00 g/mol)[?] % Ca
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the density of normal water (tghe hydrogens do not have neurons) at 20c is 0.9982 g/ml. calculate the density you would expect for heavy water by assuming the deuterium is the same size as normal hydrogen when it is poart of the water
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in which cases do the substance(s) on the left have a higher entropy than the substance(s) on the right? select all that apply.
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your water has a density of 1.00 g/ml. assume that water determine the volume of the solution. find the molarity of a solution if you have 0.5268 g of naf dissolved in 2.250
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if a second-order reaction has a half-life of 10.0 minutes when the initial reactant concentration is 0.250 m, what is the half-life when the initial concentration is 0.050 m?
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calculate the molar extinction coefficient of a cu (ii) complex if the solution was prepared by dissolving 0.1 mg of a sample in a volume of 50 ml. measured absorbance of the solution is 0.27. cuvette thickness is 1 cm.
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an amount of medication of mg is found to result in a blood pressure of mm hg. what is the predicted blood pressure
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if zinc metal is placed in a solution of 0.10 m hydrochloric acid, would a reaction take place? explain and write the half-reactions involved if a reaction takes place.
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How could this experiment have been improved
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the heat of vaporization of ethanol is . calculate the change in entropy when of ethanol condenses at . be sure your answer contains a unit symbol. round your answer to significant digits.
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explain three different ways a giant molecular cloud can be triggered to contract. (select all that apply.)
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at a party, 6.00 kg of ice at -5.00oc is added to a cooler holding 30.0 liters of water at 20.0oc. what is the temperature of the water when it comes to equilibrium?
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1.) rank ferrocene, acetylferrocene, and diacetylferrocene in order of increasing polarity. do the tlc results from your fractions support this ranking? explain.
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what is the ph of a solution formed when 100 ml of an acid with a ph of 2 is diluted to 1 liter with pure water?
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what is the major organic product obtained upon heating a mixture of 3,3-dimethyl-2-butanol, (ch3)3cch(oh)ch3, with sulfuric acid? question 3 options: 3,3-dimethyl-1-butene 2,3-dimethyl-1-butene 2,3-dimethyl-2-butene tert-butyl alcohol
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what is the ground-state electron configuration for the mn4 ion and is it paramagnetic or diamagnetic? group of answer choices
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what is the concentration of hcl in thefinalsolution when 65 ml of a12m hcl solution isdiluted with pure water to a total volume of 0.15 l?
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chemists often report percent yield for reactions. what is the formula for calculating percent yield?
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a description of a form in which an object is revealed by distinct contours in some areas whereas other edges simply vanish or dissolve into the ground is also known as:
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What is the difference between reactants and products?Group of answer choicesA Reactants are substances that are combined to form products in a physical reaction. Products are the result of substances being combined in a chemical reaction.B Reactants are substances that are combined to form products in a chemical reaction. Products are the result of substances being combined in a physicalreaction.C none of the aboveD Reactants are substances that are combined to form products in a chemical reaction. Products are the result of substances being combined in a chemical reaction.
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