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Questions (27)

A d1 octahedral complex is found to absorb visible light, with the absorption maximum occcurring at 523 nm.a) Calculate the
1. 0 answers
2. 754 views
Indicate how many stereoisomers are possible for each compound.b) tetrahedral [NiCl2Br2]2– c) octahedral [Fe(CO)4BrCl]
1. 2 answers
2. 4,801 views
A copper ore consists of 6.32% chalcopyrite, CuFeS2(s). How many grams of ore must be processed to obtain one gram of copper?
1. 2 answers
2. 639 views
A copper ore consists of 6.32% chalcopyrite, CuFeS2(s). How many metric tons of ore must be processed to obtain one metric ton
1. 1 answer
2. 653 views
Consider the following cell:Pt|H2(g, 0.130 atm)|H (aq, ? M)||Ag (aq, 1.00 M)|Ag(s) If the measured cell potential is 0.90 V at
1. 1 answer
2. 800 views
For the following battery:Cd(s) | CdCl2(aq) || Cl–(aq) | Cl2(l) | C(s) Write the reduction half reaction for the C(s)
1. 1 answer
2. 2,939 views
For the oxidation-reduction reaction equation given here,2Rb+Br2 --> 2RbBr Indicate how many electrons are transferred in the
1. 1 answer
2. 3,811 views
For the oxidation-reduction reaction equation given here,2Rb+Br2 --> 2RbBr Indicate how many electrons are transferred in the
1. 0 answers
2. 823 views
Using Lewis Formulas, assign the oxidation states to the atoms in:(a) CH3S–SCH3(l) Assume sulfur is more electronegative than
1. 1 answer
2. 2,077 views
Why can some borax also dissolve at room temperature?
1. 0 answers
2. 592 views
A geologist removes a sample of water from a lake in Nevada where the water level has been slowly dropping over time. The sample
1. 0 answers
2. 1,192 views
Given that ΔGrxn>0, how do you explain that some of the borax actually dissolves at 25deg C?
1. 0 answers
2. 900 views
Consider a process in which an ideal gas is compressed to one-sixth of its original volume at constant temperature.Calculate the
1. 1 answer
2. 687 views
Consider a process in which an ideal gas is compressed to one-sixth of its original volume at constant temperature. Calculate
1. 2 answers
2. 2,278 views
An experimental spacecraft consumes a special fuel at a rate of 2.10 × 102 L/min. The density of the fuel is 0.690 g/mL and the
1. 1 answer
2. 1,710 views
Why is AlCl3 an Arrhenius Acid, while BCl3 is not?How can I determine which is an Arrhenius Acid?
1. 1 answer
2. 3,824 views
A solution contains 0.0500 M Ca2 (aq) and 0.0350 M Ag (aq). What will be the concentration of Ca2 (aq) when Ag2SO4(s) begins to
1. 8 answers
2. 7,130 views
A solution contains 0.0200 M Pb2 (aq) and 0.0200 M Sr2 (aq). If we add SO42–(aq), what will be the concentration of Pb2 (aq)
1. 2 answers
2. 7,923 views
Copper(I) ions in aqueous solution react with NH3(aq) according to:Cu+(aq) + 2NH3(aq) > Cu(NH3)2+ (aq) Kf=6.3x10^10 M^-2
1. 1 answer
2. 995 views
Above what Fe2 concentration will Fe(OH)2 precipitate from a buffer solution that has a pH of 8.03?The Ksp of Fe(OH)2 is
1. 1 answer
2. 772 views
Calculate the pH of a buffer solution obtained by dissolving 16.0 g of KH2PO4(s) and 27.0 g of Na2HPO4(s) in water and then
1. 2 answers
2. 3,347 views
You need to prepare 100.0 mL of a pH=4.00 buffer solution using 0.100 M benzoic acid (pKa = 4.20) and 0.240 M sodium benzoate.Ho
1. 2 answers
2. 3,809 views
How much more acetic acid (pKa = 4.76) than acetate should be in solution to maintain a pH of 4.00?
1. 3 answers
2. 1,049 views
a) Calculate the change in pH when 4.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in
1. 4 answers
2. 6,156 views
Carbon dioxide dissolves in water to form carbonic acid, which is primarily dissolved CO2. Dissolved CO2 satisfies the
1. 2 answers
2. 1,022 views
Calculate the pH when 39.0mL of 0.321 of HA is mixed with 39.0mL of 0.321M NaOH whereHA is a monoprotic weak acid with Ka=
1. 1 answer
2. 445 views
A solution of household bleach contains 5.25% sodium hypochlorite, NaOCl, by mass. Assuming that the density of bleach is the
1. 0 answers
2. 929 views

Answers (8)

Thank you for your help!
I think I did it wrong... Ksp[Ag2SO4]= [SO42-][Ag+]^2 1.20x10^-5 = [SO42-][0.0350]^2 [SO42-}=9.80x10^-3M Then I substituted into: Ksp[CaSO4]= [SO42-][Ca2+] 4.93x10^-5 = [9.80x10^-3][Ca2+] [Ca2+]= 5.03x10^-3M
I'm actually not sure how to solve it, now I think the [Ca+]= 0.0500M
From my textbook, Ksp(Ag2SO4)= 1.20x10^-5 Ksp(CaSO4)= 4.93x10^-5
Thank you so much!
When I solve for b/a it equal 0.17, but I'm supposed to find how much more acetic acid should be in the solution.. How do I do that?
I tried doing it and got for a) -0.03 and b) 0.03 but the program keeps telling me I have the wrong answers... I don't know what I am doing wrong.
What gets substituted into the formula M1V1=M2V2? I don't understand...

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