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Solutions and Mixtures
Page 3
Questions (189)
A 25.0 mL aqueous solution contains 2.50 g of compound Λ. Calculate the mass of compound Λ in a single 5.0 mL extraction with
1 answer
asked anonymously
78 views
A man is mixing sugar and water for his bird feeder. He uses 1/3 of a teaspoon of sugar for 1/2 cup of water. what is the unit
1 answer
asked by
hi
45 views
Any help would be great on the below problems. I am not sure where to begin. How do I solve these? Do I use a formula?
1. You are
4 answers
asked by
Ashley
1,958 views
How many grams of ethylene glycol must be added to 37.8g of water to give a freezing point of -0.150 degrees Celsius
4 answers
asked by
lerato
1,867 views
Using household bleach and saltwater of the same molarity, describe the quantities of each that would me needed to make 30 ml of
4 answers
asked by
Sara
1,645 views
What is the molality of ammonium ions in a 1.75 m solution of (NH4)3PO4?
4 answers
asked by
haley
1,540 views
What is the percentage strength (v/v) of Diluted Alcohol, NF, which results from mixing 50 mL of Alcohol, USP (95.0%, v/v) with
4 answers
asked by
Anonymous
1,431 views
How many liters each of a 15% acid solution and a 25% acid solution must be used to produce 80 liters of a 20% acid solution
1 answer
asked anonymously
15 views
Lenny is making his own laundry soap. The recipe calls for two parts, borax, two parts washing soda, and one part soap flakes.
1 answer
asked anonymously
47 views
Complete the table below based on the solutions and cells in the beakers.
1. 45% H2O. 55% solute. 75% H2O. 25% solute. 2. 90%
1 answer
asked anonymously
52 views
Which of the following solution should be mixed with 50.0 mL of 0.050 M HF solution to make an effective buffer?
A) 50.0 mL of
4 answers
asked by
Anon
1,316 views
You mix 19.5 gallons of a mixture containing 12 wt% NaCl (sol'n density = 1.0837 g/cm^3) with V2-gallon sol'n that is 20 wt%
2 answers
asked by
Jason
1,133 views
This is a lab question...I don't understand how to do it.
A solution consisting of isobutyl bromide and isobutyl chloride is
3 answers
asked by
Kay
1,007 views
What is the mole fraction of benzene C6H6 in the VAPOR PHASE from a solution consisting of a mixture of benzene and n-hexame
3 answers
asked by
Jude
983 views
100 mL of buffer solution that is 0.15M HA (Ka= 6.8x10-5) and 0.20M NaA is mixed with 21mL of 0.35M NaOH. What is the pH of the
2 answers
asked by
Linda
951 views
An aqueous mixture containing starch (a colloid), NaCl, glucose, and albumin (a colloid) is placed in a dialyzing bag and
1 answer
asked by
MoMto2
953 views
a solution of CH4N2O in water has a vapor pressure of 19.6 torr. at 25C. what is the mole fraction of CH4N2O in this solution?
10 answers
asked by
yeng
941 views
Explain why the FeCl3-KCI-HCl solution was used as a reference solution. Suggest a procedure you could follow to determine
2 answers
asked by
Alyssa
912 views
will 1 molar NH3 and 1 molar NH4Cl form a buffered solution?
2 answers
asked by
Anonymous
903 views
When substances such as sugar and table salt are dissolved in water, the freezing points of the new solutions are lower than the
3 answers
asked by
kayci
881 views
50 mL of a 2.50 M solution of ammonium phosphate is added to 100mL of a 1.50 M solution of calcium nitrate. At the end of the
1 answer
asked by
Bleh
841 views
What volume of 0.100 M NaOH is needed to make 100.0 mL of a buffer solution with a pH of 6.00 if one starts with 50.0 mL of
1 answer
asked by
rodger
845 views
What volume of ethanol must be diluted with water to prepare 768 mL of 0.873 M solution? The density of ethanol is given as
2 answers
asked by
Agnes
823 views
Describe how you would prepare 500 ml of a solution that is 40% bleach solution by volume.
2 answers
asked by
Jessi
819 views
calculate the osmotic pressure of a solution obtained by mixing 100ml of 0.25M solution of urea and 100ml of 0.1m solution of
2 answers
asked by
sumit
832 views
How can i prepare a 100ml, 0.1M phosphate buffer solution (pH = 7) out of Na2HPO4 and NaH2PO4
1 answer
asked by
mel
750 views
Calculate the freezing point and boiling point of a solution that contains 57.0 g NaCl and 53.4 g KBr dissolved in 750.3 mL H2O
3 answers
asked by
Anonymous
747 views
A solution is made by dissolving 10.20 grams of glucose (C6H12O6) in 355 grams of water. What is the freezing-point depression
2 answers
asked by
Maria
744 views
How do you prepare one liter of phosphate buffer 0.01 M at pH 12.0 from 85% phosphoric acid (density 1.69g/ml) and NaOH 1.0 M
2 answers
asked by
Phil
729 views
calculate the mass ratio of 25% cacl2 solution and water to prepare 500 g of a 5% salt solution
1 answer
asked by
Regan
697 views
I am confused about why this is the answer to a practice problem I was given. (answer is c). Could someone explain why/why not
4 answers
asked by
Trixie
707 views
A 35ml 0.1M AgCl solution is mixed with 15ml 0.25M MgCl2 solution. Calculate the moles and molarities of the Ag+, NO3-,Mg2+, and
2 answers
asked by
Jimmy
711 views
How to prepare 10% sucrose solution enriched with 0.1% phenylalanine? And also how to make the stock solution of phenylalanine
2 answers
asked by
Chemistry
718 views
Cocaine is a non-electrolyte that has a molecular weight of 303.4 g/mole. How many grams must be dissolved in 25.0 mL of
2 answers
asked by
Alyssa
694 views
What volume of ethylene glycol (C2H6O2), a nonelectrolyte, must be added to 13.7 L of water to produce an antifreeze solution
2 answers
asked by
yutyh
682 views
Two solutions are prepared. In Solution A, 5.0 g of a substance of molecular weight 50 is dissolved in 100 mL of pure water. In
2 answers
asked by
Anonymous
672 views
What is the vapor pressure in Torr above a solution prepared by mixing 66.73g of benzene C6H6 with 63.26g toluene C6H5CH3 at 20
2 answers
asked by
Jude
648 views
a 250.0 ml sample of an aqueous solution at 25 degrees celsius contains 35.8 mg of an unknown nonelectrolyte compound. If the
3 answers
asked by
Vic
618 views
1.Pippete 20ml of 0.1M acetic acid and 20ml of 0.1M NaOH into a 100ml beaker (Remember that the final volume of this solution is
2 answers
asked by
tomi
619 views
a chemist mixes an 11% alchohol solution with an 8% alchohol solutoins. How many milliliters of each solution should he use to
1 answer
asked by
nicole
614 views
What volume of 0.5M NaOH must be added to 50mL of .0.1M benzoic acid to make 100.0 mL of 0.05 M benzoate buffer that is pH 4.5?
2 answers
asked by
Kathy
577 views
Suppose you are given a sample of a homogeneous liquid, consisting of a non-volatile solute and a suitable solvent. What would
2 answers
asked by
Anonymous
588 views
Write a brief procedure outling how would you prepare 250mL of a 0.150M solution of a CoCl2 from solid CoCl2 and distilled water
2 answers
asked by
Armando
586 views
A particular household ammonia solution (d= 0.97g/mL) is 6.8% NH3 by mass.
How many milliliters of this solution should be
2 answers
asked by
help!!!
598 views
To what volume must a solution of 83.1 g H2SO4 in 505.3 mL of solution be diluted to give a 0.28 M solution?
I do not understand
3 answers
asked by
tina
582 views
a student needed 1000 ml of a 0.10 buffer of ph 4.0. calculate the amount of sodium acetate and acidic acid needed for this
2 answers
asked by
bay
571 views
calculate the necessary amounts of solutes and solvent to make a 4 liter bottle of antifreeze that will have a 35 degree change
2 answers
asked by
shaknocka lewis
590 views
The following picture shows a temperature-composition diagram for an ideal liquid solution of two components A and B, in which
2 answers
asked by
R
564 views
How much Tris do you need to weigh out to make 250 ml of the 50 mM buffer?
A. 0.95g B. 1.51g C. 2.42 D. 1.75g
3 answers
asked by
Susana
562 views
Compute the boiling point elevation of a salt water solution that contains 2.60 g of NaCl dissolved in 121 ml of water. Enter
3 answers
asked by
chaddhar
561 views
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Parent Categories (7)
Chemical Reactions
Chemistry
Experiments
Organic Chemistry
Percentages
Physical Chemistry
Science and Chemistry