12/01/19

Two different reactions have exactly the same activation energy. What can you say about their reaction rates?
Assume that temp, reactant concentration, and order are the same in both reactions.
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12/01/19

What is the catalyst in the following mechanism?
Step 1: Ce4+ + Mn2+ => Ce3+ + Mn3+step 2: Ce4+ + Mn3+ => Ce3+ + Mn4+step 3: Mn4+ + Tl+ => Tl3+ + Mn2+
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12/01/19

Can the rate of a chemical reaction be unaffected by the increase of concentration of one of the reactants?
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11/30/19

Bomb Calorimetry
When 0.963 g of benzene, C6H6, is burned in a bomb calorimeter, the temperature of the calorimeter increases by 8.39 °C. The bomb has a heat capacity of 784 J⁄°C and is submerged in 925 mL of... more
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11/30/19

Specific heat capacity
When 100 mL of 0.200 M NaCl(aq) and 100 mL of 0.200 M AgNO3(aq), both at 21.9 °C, are mixed in a coffee cup calorimeter, the temperature increases to 23.5 °C as solid AgCl forms. How much heat is... more
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11/30/19

Consider the titration of 39.5 mL of 0.201 M HCl with 0.123 M KOH. Calculate pH...
Consider the titration of 39.5 mL of 0.201 M HCl with 0.123 M KOH. Calculate the pH of the resulting solution after the following volumes of KOH have been added. (Assume that all solutions are at... more
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11/30/19

Which acid would be the best choice for preparing a pH = 2.00 buffer? How would you prepare 1.0 L of this buffer?
(a) Which acid would be the best choice for preparing a pH = 2.00 buffer?HClO2HOCl    HC2H3O2HCNHFHow would you use Ka values to calculate this?? Please show the steps. (b)Explain how to make 1.0... more
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11/30/19

Calculate the pH after 0.15 mole of NaOH is added to 1.08 L of a solution that is 0.52 M HC3H5O3 and 1.11 M KC3H5O3... full question below
Calculate the pH after 0.15 mole of NaOH is added to 1.08 L of a solution that is 0.52 M HC3H5O3 and 1.11 M KC3H5O3, and calculate the pH after 0.30 mole of HCl is added to 1.08 L of the same... more
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11/30/19

Calculate the pH after 0.015 mole of HCl is added to 1.00 L of each of the four solutions. (Assume that all solutions are at 25°C.)
(a)    0.141 M pentanoic acid (HC5H9O2, Ka = 1.5 ✕ 10−5)(b)    0.141 M sodium pentanoate (NaC5H9O2)(c)    pure H2O(d)    0.141 M HC5H9O2 and 0.141 M NaC5H9O2Please help. And please show the steps.... more
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11/30/19

Figuring out Intermolecular Forces?
I believe the answer for the first question is hydrogen bonding, but I am not sure about the other ones.What is the strongest type of intermolecular force in each of the following... more
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11/30/19

Chemistry Resonance Question?
I am a bit confused, and the only one I am pretty sure has resonance is CNS-.Which of the following compounds/ions exhibit resonance? Select "yes" or "no" for each... more
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11/29/19

What would the value for k be?
the reaction is C3H6Cl2+3Br-==>C3H6+2Cl-+3Br-which gives the following data:trial 1Initial concentration of C3H6Cl2(M)0.080Initial concentration of Br-(M)0.080instantaneous reaction rate... more
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11/29/19

What would be the order of this reaction with respect to Br-?
instantaneous reaction rate (M/s)3Br-==>C3H6+2Cl-+3Br-which gives the following data:trial 1Initial concentration of C3H6Cl2(M)0.080Initial concentration of Br-(M)0.080instantaneous reaction... more
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11/29/19

What would be the order of this reaction with respect to C3H6Cl2?
instantaneous reaction rate (M/s)3Br-==>C3H6+2Cl-+3Br-which gives the following data:trial 1Initial concentration of C3H6Cl2(M)0.080Initial concentration of Br-(M)0.080instantaneous reaction... more
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11/29/19

What is the generalized rate equation for this reaction?
instantaneous reaction rate (M/s)3Br-==>C3H6+2Cl-+3Br- which gives the following data:trial 1Initial concentration of C3H6Cl2(M)0.080Initial concentration of Br-(M)0.080instantaneous... more
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11/29/19

In the equation 3-6:R=k[A]x[B]y What is the overall order of the reaction?
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11/29/19

In the equation 3-6:R=k[A]x[B]y what is the rate consistent?
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11/29/19

A chemist performs a reaction by adding 50g of NaOH pellets to 500 mL of a 3.0 M HCl solution. What could the chemist do to increase the rate of the reaction?
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11/29/19

Determine amount of NaCl that dissolved and calculate its solubility in methanol.
Data: Initial mass: 10.417Final mass: 11.855Used 50mL of methanol to filtrate substance
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11/28/19

Find Kb from given pH
The pH of a 5.18E-1 M solution of a weak base if 9.54. Calculate Kb for this base.
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11/27/19

chemistry homework
While drinking a can of Coca-cola, you notice that one of the ingredients is phosphoric acid. The cola has a pH of 3.5. What is the hydrogen ion concentration?  OH- concentration?  What is the... more
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11/27/19

chemistry question
Holiday eggnog contains 1 cup of bourbon. The bourbon used to make the eggnog was 45.00% by volume alcohol. What volume of alcohol must be present to produce a 45.00% by volume concentration in a... more
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11/27/19

acid base titrations
for the titration of 50.00 mL of 0.1317 M angelic acid with 0.1506 M KOH:pKa = 4.29a) Determine the equivalence volume and pH for this titrationb) calculate the pH at each of the following volumes:... more
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11/27/19

what is △G for the following reaction at 298 K? 2C6H6(l)+15O2(g)-->12CO2(g)+6H2O
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11/27/19

How to use hess’s law to determine the △H For the combustion of liquid methanol?
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