Question
In: Chemistry
A chemist wants to prepare a stock solution of H2SO4 so that samples of 20 mL...
A chemist wants to prepare a stock solution of H2SO4 so that samples of 20 mL will produce a solution with a concentration of 0.2 M when added to 80.0 mL of water. What should the molarity of the stock solution be?
Solutions
queen_honey_blossom answered 1 year agoRelated Solutions
100 mL of 0.1 M NaOH solution was poured into 20 mL of 0.2 M H2SO4...
100 mL of 0.1 M NaOH solution was poured into 20 mL of 0.2 M
H2SO4 solution and mixed well. What was the final pH of the
mixture?
Titration of a 15.0 mL solution of KOH requires 17.0 mL of 0.0250 M H2SO4 solution....
Titration of a 15.0 mL solution of KOH requires 17.0 mL of
0.0250 M H2SO4 solution.
What is the molarity of the KOH solution?
M=?
Consider the following dilution steps from a 3.51 M stock solution of H2SO4. 1. 25. mL...
Consider the following dilution steps from a 3.51 M stock
solution of H2SO4. 1. 25. mL of the 3.51 M stock solution is
diluted to 150. mL to make soln2. 2. 35. mL of soln2 is diluted to
200. mL to make soln3. 3. 45. mL of soln3 is diluted to 250. mL to
make soln4. 4. 50. mL of soln4 is diluted to 300. mL to make soln5.
• Calculate the concentration, in M, for soln5. • Derive a...
For the titration of 50.00 mL of a 0.1000 M solution of compound H2SO4 with a...
For the titration of 50.00 mL of
a 0.1000 M solution of compound H2SO4 with a
0.2000
M solution of compound NaOH in the following table.
For each titration, calculate the pH after the addition
of 0.00, 20.00, 25.00, 37.50,
50.00, and 60.00 mL of com-
pound NaOH.
Please explain all the steps.
You are given 5mL of 3mg/mL protein solution. You are asked to prepare samples for SDS-PAGE...
You are given 5mL of 3mg/mL protein solution. You are asked to
prepare samples for SDS-PAGE containing 250ng, 500ng, 750ng, and
1000ng. Your pipettes are calibrated to 2uL at the lower limit.
Your total volume is 20uL, with 5uL being your loading buffer. How
would you prepare these samples?
You are given 5mL of 3mg/mL protein solution. You are asked to prepare samples for SDS-PAGE...
You are given 5mL of 3mg/mL protein solution. You are asked to
prepare samples for SDS-PAGE containing 250ng, 500ng, 750ng, and
1000ng. Your pipettes are calibrated to 2uL at the lower limit.
Your total volume is 20uL, with 5uL being your loading buffer. How
would you prepare these samples?
An environmental chemist wants to use gas chromatography to measure the herbicide atrazine in water samples....
An environmental chemist wants to use gas chromatography to
measure the herbicide atrazine in water samples. This analysis is
originally conducted on a 10-m long and 0.53-mm inner diameter
open-tubular column that contains a 1.20-μm thick coating of a
stationary phase, which gives a capacity factor of 10.5 for
atrazine. The chemist later switches to another column of the same
size and type that has a 2.65-μm thick coating of stationary phase.
If all other conditions are kept the same,...
24.56 mL of a H2SO4 solution of unknown molarity is titrated to the equivalence point with...
24.56 mL of a H2SO4 solution of unknown molarity is titrated to
the equivalence point with 19.3mL of a 0.45 M KOH solution to the
equivalence point. What is the concentration of the acid solution?
(please show work and answer in correct sig figs and scientific
notation)
Consider a solution formed by mixing 50.0 mL of 0.100 M H2SO4, 30.0 mL of 0.1000...
Consider a solution formed by mixing
50.0 mL of 0.100 M H2SO4,
30.0 mL of 0.1000 M HOCl,
25.0 mL of 0.200 M NaOH,
25.0 mL 0.100 M Ba(OH)2, and
10.0 mL of 0.150 M KOH.
Calculte the pH of this solution.
Ka (HOCl) = 3.5 x 10-8
What is the pH?
A chemist has a 20% and a 40% acid solutions. What amount of each solution should be used in order to make 300 ml of a 28% acid solution?
A chemist has a 20% and a 40% acid solutions. What amount of each solution should be used in order to make 300 ml of a 28% acid solution?
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