Calculate the molality of a solution that is prepared by mixing
25.5 mL of CH3OH (d = 0.792 g/mL) and 387 mL of CH3CH2CH2OH (d =
0.811 g/mL). I get 2.01m, but I am not sure if I am doing this
right.
What is the molality and molarity of solution prepared by
dissolving 35.0 mL of benzene (density = 0.877 g/mL) in 175 mL of
hexane (density = 0.660 g/mL)? Assume volumes are additive.
1)
If a solution is prepared by mixing 15.7 mL of CH3CH2OH (d = 0.792
g/mL) and 457 mL of CH3CH2CH2OH (d = 0.911 g/mL) what is the
concentration in molality m?
2) What would be the vapor pressure if 55.6 g of a sugar
(C6H12O6) is dissolved in 440.0 mL of water (d = 1.00 g/mL). The
vapor pressure of water at this temperature is 23.9 torr.
3) 13.2 mg of an unknown non-volatile compound is dissolved in
403...
what is the concentration of each substance if a solution is
prepared by mixing 5.00g of NaC2H3O2 with 15.0 ml of 1.45M acetic
acid and then bringing the total volume to 250.0 ml?
Please show work
a) What is the pH of a buffer solution prepared by mixing 120 mL
of a 0.435 M CH3CO2H with 50 mL of a .286 M
CH3CO2Na solution?
CH3CO2H Ka = 1.75 x
10-5
b) What is the resulting pH if we add 10.2 mL of a .513 M HCl
solution to this buffer? Does the pH make sense? Why/why not?
c) What is the resulting pH if we add 3.56 mL of a 0.420 M NaOH
solution to the...
What is the molality, m, of a solution made by adding 4.18 g of
solid naphthalene, C10H8, to 32.01 g of liquid benzene, C6H6? The
molar mass of naphthalene = 128.2 g/mol and benzene = 78.1
g/mol.
a) What is the nickel ion concentration in a solution prepared
by mixing 379mL of 0.419 M nickel nitrate with 435 mL of 0.363 M
sodium hydroxide? The Ksp of nickel hydroxide is 1 x 10^-16.
b) What is the silver ion concentration in a solution prepared
by mixing 407mL of 0.379 M silver nitrate with 461 mL of 0.565 M
sodium phosphate? The Ksp of silverphosphate 2.8x10^-18.
what is the pOH of a solution prepared by mixing 0.01 moles of
HCL with 25.00 mL of 1.0 methylamine, CH3NH2, and with 15.00 mL of
1.0 M methylammonium chloride, CH3NH3CL? Assume that the volume of
the solutions are additive and that Kb= 3.70 x 10^-4 for
methylamine. You cant use the Henderson-Hasselbalch equation in
solving this problem.