Questions LLC
Login
or
Sign Up
Ask a New Question
Categories
Chemistry 2
Questions
Which is reduced in the following reaction:
Cr2O72-+6S2O32-+14H+>2Cr3+ + 3S4O62- + 7H20 A. H+ B. Cr6+ C. S4O62- D. S2+ E. O2- I
4 answers
asked by
Debbie
6,447 views
Which is the oxidizing agent in the reaction below.
Cr2O72- + 6S2O32- +14H+ > 2Cr3+ + 3S4O62- +7H20 A. Cr3+ B. S4O62- C. Cr2O62-
5 answers
asked by
Debbie
4,960 views
What is the solubility of silver chromate in pure water
3 answers
asked by
Joe
1,426 views
calculate the theorectical yield of the compounds to be prepared in the experiment. The metal ion in both cases is the limiting
4 answers
asked by
Debbie
2,275 views
In a particular redox reaction, MnO2 is oxidized to MnO4– and Ag is reduced to Ag. Complete and balance the equation for this
4 answers
asked by
jjhjhhjhk
3,834 views
For the gaseous reaction of carbon monoxide and chlorine to form phosgene, (COCl2), calculate each of the following.
(a)
7 answers
asked by
Anonymous
2,203 views
Can someone please tell me which of the following I have wrong?? I know that one or more is incorrect, but I'm not sure which
1 answer
asked by
Lindsay
722 views
A mixture containing KCLO3, K2CO3, KHCO3, and KCL was heated, producing CO2, O2, and H2O (water) gases according following
4 answers
asked by
Pat
2,914 views
If 2.0 mol of NO and 1.0 mol Cl2 are placed into a 1.0L flask, calculate the equilibrium concentrations of all species
1 answer
asked by
Hillary
412 views
Can someone balance this equation for me?
Ba(OH2)x 8H20+ NH4SCN--> Ba(SCN2)+ H20 + NH3 Thank you!
3 answers
asked by
Sarah.
534 views
You have a stock solution of 15.0 M NH3 . How many milliliters of this solution should you dilute to make 1200ml of 0.280 M NH3?
2 answers
asked by
Melissa
887 views
In a study designed to prepare new gasoline resistant coatings, a polymer chemist dissolves 6.053g of poly in enough water to
3 answers
asked by
Mike
1,586 views
The rate constant nearly doubles for some reaction when there is an increase in temperaure from 17 degree celsius to 32 degree
3 answers
asked by
Tim
343 views
Consider the system I2 (g) <----> 2I (g) with H=+151 KJ. Suppose the system is at equilibrum at 1000 degree celsius. In which
3 answers
asked by
Tim
569 views
How many orbitals in an atom can have each of the following designations?
(a) 3p (b) n=1
2 answers
asked by
Jon
925 views
The pH of a 0.175 M aqueous solution of a weak acid is 3.52. What is Ka for this acid ?
3 answers
asked by
Sammie
807 views
Which solution will have the lowest pH ?
A. .10 M HCN B. .10 M HNO3 C. .10 M NaCL D. .10 M H2CO3 E. .10 M NaOH
2 answers
asked by
Sammie
520 views
How many grams of O2 will dissolve in 2.50L of H2O that is constant with pure O2 at 1.00atm?
2 answers
asked by
Mae
543 views
An aqueous solution has a vapor pressure of 81.1 at 50 . The vapor pressure of pure water at this temperature is 92.6. What is
2 answers
asked by
Jesse
1,000 views
The rate constant is 9.50x10^-5 L/mol*s at 195 degrees Celsius and 1.30x10^-3 L/mol*s at 258 degrees Celsius. What is the
1 answer
asked by
Aestas
464 views
Styrene, C8H8, is one of the substances used in the production of synthetic rubber. When styrene burns in oxygen to form carbon
3 answers
asked by
Nick
2,269 views
An aqueous solution of CuSO4 has a density of 1.3g/ml and is 1.16 molal. Calculate the Molarity of this solution.
1 answer
asked by
Kelci
440 views
I have to calculate the Ccal using the following info:
Initial Temp of water outside calorimeter=22.6 C Initial Temp of water
3 answers
asked by
Lily
1,351 views
A student prepares phosphorous acid by reacting solid phosphorous triodide with water
PI3+H2O-->H3PO3+HI The student needs to
1 answer
asked by
krloz
614 views
How many cans ( each containing 14.0 oz of propane) would be required to convert 41.7 lbs of ice at -15.0 C to water at 100 C (
1 answer
asked by
Will
267 views
An industrial chemical reaction has a rate law: rate = k [C]. The activation energy for the reaction is 3.0000 x 10^4 J/mol and
3 answers
asked by
Jessica
1,398 views
If 20 mL of .10 M H2SO4 was added to 50 mL of .10 M NaOHand the mixture was stirred, then tested with a pH meter. What is the
1 answer
asked by
Brin
356 views
A saturated solution of a certain metal(II) chloride has a chloride ion concentration of 0.032M. The Ksp for this compound can
4 answers
asked by
Sheri
474 views
_________is reduced in the following reaction:
Cr2O72-+6S2O32-+14H+>2Cr3+ + 3S4O62- + 7H20 A. H+ B. Cr6+ C. S4O62- D. S2+ E. O2-
3 answers
asked by
Debbie
1,461 views
The bottle of bleach lists the percentage of sodium hypochlorite as 6.0%. If the density of commercial bleach is 1.084 g/mL, how
2 answers
asked by
Anonymous
602 views
Chlorine atoms contribute to the destruction of the earth's ozone layer by the following sequence of reactions:
Cl + O3 --> ClO +
1 answer
asked by
Robert
620 views
Supposed you stoppered the flasks after your titration to determine the equilibrium constant and kept the solutions for another
7 answers
asked by
Robert
2,596 views
How many grams of nickel metal are plated out when a constant current of 15.0 A is passed through aqueous NICl2 for 60.0
3 answers
asked by
Ashley
5,065 views
A titration is performed by adding 0.124 M KOH to 40 mL of 0.159 M HNO3.
a) Calculate the pH before addition of any KOH. b)
2 answers
asked by
Antonio
687 views
If 1.0 mL of an unknown liquid was added to a flask instead of 6mL, would that change the calculated molar mass of the unknown
2 answers
asked by
Angela
588 views
If 1.0 mL of an unknown liquid was added to a flask instead of 6mL, would that change the calculated molar mass of the unknown
1 answer
asked by
Angela
437 views
If 1.0 mL of an unknown liquid was added to a flask instead of 6mL, would that change the calculated molar mass of the unknown
2 answers
asked by
Angela
497 views
What is the predominant intermolecular force responsible for the dissolution of the hydrophilic end of
soap in water? Using
3 answers
asked by
Angela
1,321 views
Durango redox reaction the oxidation number of species Will decretase, increpase or stay the same
1 answer
asked by
Mary
319 views
Calculate Kp for the reaction
C(s)+CO2(g)<-->2CO(g) kp=? C(s)+2H2O(g)<--->CO2(g)+2H2 kp1=3.47 H2(g)+CO2(g)<--->H2O(g)+CO(g)
2 answers
asked by
Sharon
602 views
Calcualte PH and POh of an aqueous solution that is 0.050 M in HCL and 0.085 M in HBr at 25 degrees C
2 answers
asked by
Jason
885 views
A solution of NaOH (aq) contains 8.2 grams of NaOH(s) per 100.0 mL of solution. Calcualte Ph and POH at 25 degrees celsiuis
4 answers
asked by
Jason
1,597 views
What is the molarity of 50.0 mL solution of aluminum sulfite that contains 80.0 g of this salt? (Al=27.0, S=32.0,O=16.0)
3 answers
asked by
Ivan
397 views
For the reaction: 2A + 3B <--> 4C
Kinetic data are as follows A B time needed 10mL 5mL 720 seconds 20mL 5mL 180 seconds 20mL 10mL
1 answer
asked by
Ivan
433 views
When we mix 25.0 mL, 2.0 M BaCl2 with 25.0 mL, 3.0 M Na2SO4 what is the balanced equation? What is the ionic equation? what is
3 answers
asked by
Ivan
487 views
For the fist order reaction A <-> B, calculate the t1/2(half life) and k(rate constant) and also fill in the blanks.
A-Concetrati
5 answers
asked by
Ivan
433 views
For a second order reaction A <--> B, calculate the t1/2 (half life) and the k(constant) and also fill in the blanks.
A
6 answers
asked by
Ivan
530 views
For the fist order reaction A <-> B, calculate the t1/2(half life) and k(rate constant) and also fill in the blanks.
A-Concetrati
3 answers
asked by
Ivan
443 views
CALCULATE THE SOLUBILITY OF CuBr in 0.69 M NH3
3 answers
asked by
Joe
786 views
Compare endothermic and exothermic reactions in terms of potential energy, heat flow, and observed temperature changes. Explain
4 answers
asked by
Helen
1,246 views
calculate the PH of a mixture containing 30 mL, 0.10M HC2H3O2? (Ka=1.8x10^-8 of HC2H3O2)
4 answers
asked by
Cris H.
519 views
Calculate the molarity of the following aqueous solution of 25.0 grams of MgBr2 in 0.355 L solution?
Did I work this right?
3 answers
asked by
Brandi
744 views
Pure nitrosyl bromide, NOBr at 0.762 M is placed into a sealed vessel and heated up to 400 K. When the system reaches
2 answers
asked by
Matt
547 views
what is the pH in a 0.13M solution of aniline (Kb=4.3*10^-10).
What is the concentration of C6HNH2 in the same solution?
2 answers
asked by
Eleanor
982 views
If a gaseous sample contains 74% N2 by volume, what is the solubility of N2 in water at 25°C and 1.0 atm (kH in H2O at 25°C =
2 answers
asked by
Priya
1,040 views
Calculate the molality, molarity, and mole fraction of FeCl3 in a 25.7 mass % aqueous solution (d = 1.204 g/mL).
2 answers
asked by
Anonymous
579 views
A United Nations toxicologist studying the properties of mustard gas, S(CH2CH2Cl)2, a blistering agent used in warfare, prepares
4 answers
asked by
Anonymous
1,904 views
The equilibrium constant, Kc, for the following reaction is 1.54E-2 at 643 K.
2HI(g) H2(g) + I2(g) When a sufficiently large
2 answers
asked by
Mariah
623 views
The equilibrium constant, Kc, for the following reaction is 1.54E-2 at 643 K.
2HI(g) H2(g) + I2(g) When a sufficiently large
3 answers
asked by
Mariah
629 views
Does the reaction P4(s, white) + 5 O2(g) P4O10(s) occur spontaneously at 298 K and standard state conditions?
Calculate the value
2 answers
asked by
Anonymous
926 views
When 5.0g of CaCl2 was dissolved in 50 ml of water in a coffee cup calorimeter, the temperature of the solution rose from 22.3C
2 answers
asked by
nikk
1,310 views
36.) Suppose a chemistry student discoveres that a block of pure ice is left on her porch as she goes to school one day. What
1 answer
asked by
Sam
386 views
Given the following information at 25C, calculate �G at 25 degrees Celsius
2A(g) � B(g) ±£ 3C(g) Substance �Hf � (kJ/mol)
4 answers
asked by
nikk
627 views
Potassium nitrate has a lattice energy of -163.8 kcal/mol and a heat of hydration of -155.5 kcal/mol.
How much potassium nitrate
1 answer
asked by
kread561
1,015 views
we make a solution of water and ethylene glycol c2h4(oh)2 which contains 24 g of the glycol for each 74 g of water. What is the
2 answers
asked by
Adam
1,285 views
The mechanism for the reaction of nitrogen dioxide with carbon monoxide to form nitric oxide and carbon dioxide is thought to be
1 answer
asked by
Alanna
872 views
The solubility of CO2 in water is 3.2 x 10^2 M at 25 C and 1 atm pressure. What is the Henry's Law constant for CO2 in mol/(L
1 answer
asked by
Brad
919 views
The molar heat of solution of ammonia is −30.50 kJ/mol. What happens to the temperature of water when ammonia is added to it?
I
3 answers
asked by
Eric
1,136 views
Good evening!
I hope you are all well:) I've been struggling through a full packet of these questions and was wondering if I
4 answers
asked by
Daniel
465 views