Which of the following solutions has the highest osmotic pressure?
(a) 100 g of a polymer with MW=1,000 g/mol in 1 L of water. (b) 30 g of glucose (MW=180 g/mol) in 1 L of water. (c) 6 g of NaCl (MW=58 g/mol) in 1 L of water. (d) 3 g of Ethanol (MW=46 g/mol) in 1 L of water.
Which of the following affect the internal osmotic pressure of a
system, such as a cell?
Group of answer choices
Osmotic pressure increases with a decrease in volume and
increases with an increase in concentration.
Osmotic pressure is independent of volume changes.
Osmotic pressure increases with a decrease in volume and
decreases with an increase in concentration.
Osmotic pressure decreases with a decrease in volume and
decreases with an increase in concentration.
Osmotic pressure decreases with a decrease in volume...
1. Water potential is the
(a)difference between pressure potential and osmotic
potential.
(b)summation of pressure potential and solute potential.
(c)difference between pressure potential and solute
potential.
(d)product of pressure potential and osmotic potential.
(e)combination of turgor pressure and pressure potential.
2. Which of the following are plant secondary metabolites that
defense against herbivores? (can choose more than one answers)
(1) Lectins
(2) Cytokinin
(3) Cyanide
(4) Phospholipids
(5) Protease Inhibitors
3. Which of the following is a function mediated by...
Calculate the osmolality and osmotic pressure of a 2.0x10-4 M
solution of K2SO4 at 20.0 degrees C. Make sure to include correctly
written dissociation equation.
Which of the following has the lowest osmotic pressure at 25 C?
Assume that the ionic compounds dissociate completely.
a) 0.10 M aqueous sodium chloride
b) 0.10 M aqueous calcium chloride
c) 0.10 M aqueous aluminum chloride
d) 0.10 M aqueous glucose
order the following aqueous solutions in the order of increasing
osmotic pressure.
0.100 M NiBr3
0.100 M MgSO4
0.150 M Na2SO4
0.150 M NH4NO3
0.250 M fructose
A conductivity cell when standardized with 0.01 M KCl was found
to have a resistance of 189 Ω. With 0.01 M ammonia solution the
resistance was 2460 Ω. Calculate the bas dissociation constant of
ammonia, given the following molar cconductivities at these
concentrations: λ(K+) = 7305
Ω-1cm2mol-1; λ(Cl-) =
76.4 Ω-1cm2mol-1;
λ(NH4+) = 73.4
Ω-1cm2mol-1; λ(OH-) =
198.6 Ω-1cm2mol-1.
Research has shown in the past that high B/M stocks
generally have higher average returns than low B/M stocks over long
periods of time. Explain how efficient market hypothesis and
behavioral finance would differ in their explanations of this
phenomenon.