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Jematormal91
Questions and answers by visitors named
Jematormal91
Questions (27)
Indicate how many stereoisomers are possible for each compound.
b) tetrahedral [NiCl2Br2]2– c) octahedral [Fe(CO)4BrCl]
5 answers
4,724 views
A solution of household bleach contains 5.25% sodium hypochlorite, NaOCl, by mass. Assuming that the density of bleach is the
3 answers
857 views
Calculate the pH when 39.0mL of 0.321 of HA is mixed with 39.0mL of 0.321M NaOH where
HA is a monoprotic weak acid with Ka=
1 answer
407 views
Carbon dioxide dissolves in water to form carbonic acid, which is primarily dissolved CO2. Dissolved CO2 satisfies the
3 answers
970 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
6 answers
6,045 views
How much more acetic acid (pKa = 4.76) than acetate should be in solution to maintain a pH of 4.00?
4 answers
1,008 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
4 answers
3,737 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
4 answers
3,260 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
2 answers
723 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
2 answers
935 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)
5 answers
7,853 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
9 answers
7,048 views
Why is AlCl3 an Arrhenius Acid, while BCl3 is not?
How can I determine which is an Arrhenius Acid?
3 answers
3,759 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
3 answers
1,664 views
Consider a process in which an ideal gas is compressed to one-sixth of its original volume at constant temperature. Calculate
5 answers
2,205 views
Consider a process in which an ideal gas is compressed to one-sixth of its original volume at constant temperature.
Calculate the
2 answers
639 views
Given that ΔGrxn>0, how do you explain that some of the borax actually dissolves at 25deg C?
1 answer
874 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 answer
1,134 views
Why can some borax also dissolve at room temperature?
2 answers
554 views
Using Lewis Formulas, assign the oxidation states to the atoms in:
(a) CH3S–SCH3(l) Assume sulfur is more electronegative than
3 answers
2,035 views
For the oxidation-reduction reaction equation given here,
2Rb+Br2 --> 2RbBr Indicate how many electrons are transferred in the
1 answer
769 views
For the oxidation-reduction reaction equation given here,
2Rb+Br2 --> 2RbBr Indicate how many electrons are transferred in the
4 answers
3,744 views
For the following battery:
Cd(s) | CdCl2(aq) || Cl–(aq) | Cl2(l) | C(s) Write the reduction half reaction for the C(s)
4 answers
2,887 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
2 answers
755 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
2 answers
605 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?
3 answers
592 views
A d1 octahedral complex is found to absorb visible light, with the absorption maximum occcurring at 523 nm.
a) Calculate the
1 answer
716 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...
