Calculate the heat/mole KCl when KCl is dissolved in water if
3.00 grams of KCl changes...
Calculate the heat/mole KCl when KCl is dissolved in water if
3.00 grams of KCl changes the temperature of 301 mL of water from
23oC to 29oC. (swater = 4.184
J/goC)
Fish rely on dissolved O2 in the water for life. Calculate the
mole fraction of dissolved O2 in water at 25 degree Celsius and
compare the molarities of O2. Assume O2 makes up 20% of the
atmosphere and use Henry's constant. K: 3.27x10^-7 and K': 773
atm*kg/mol.
A 0.9140 g sample of a mixture of NaCl and KCl is
dissolved in water, and the solution is then treated with an excess
of AgNO3 to yield 1.943 g of AgCl.
Calculate the percent by mass of each compound in the
mixture.
A 0.9000 g sample of a mixture of NaCl and KCl is dissolved in
water, and the solution is then treated with an excess of
AgNO3 to yield 1.923 g of AgCl. Calculate the percent by
mass of each compound in the mixture.
____% mass of NaCl
____% mass of KCl
Calculate the freezing point of a solution containing 40 grams
of KCl and 4400.0 grams of water. The
molal-freezing-point-depression constant (Kf) for water
is 1.86
+0.45 oC
-0.23 oC
-0.45 oC
1.23 oC
+0.23 oC
Stephanie dissolves 9 grams of potassium chloride (KCl) in 32.
grams of water. What is the concentration of KCl in her solution
using the %(m/m) method?
Mellissa dissolves 26. grams of NaCl with water to make a 218.
mL solution. What is the molarity of the solution? There are 1,000
mL in 1
1, When 4.0 mole of LiI is dissolved 1000.0 ml of water, what
resulting molality (m) is used to calculate the change in boiling
point of the water.
2, What mass ( in g) of NH3 must be dissolved in 1000.0 g of
Methanol to make a 0.250m solution?
1) What is the molarity of a 3.12 m solution of KCl dissolved in
water, given that the solution has a density of 1.13 g/mL?
2)What is the concentration (ppm) of lead found in a water
sample at the 3.29 x 10?5 M level?
3) A 14.0 M solution of concentrated nitric acid has 20.0 mL
withdrawn from it. The 20.0 mL sample is then diluted until the
total volume of the resulting solution is 2.50 L. What is the...
49.50 grams of Fe(NO3)3 are dissolved in enough water
to prepare 550.0 ml of solution
calculate the concentration of iron(III) nitrate in
the solution in molarity.
how many milliliters of this solution would be
required to supply 0.084 moles of nitrate ions
Part A
If 0.100 mol of a nonvolatile nonelectrolyte are
dissolved in 3.00 mol of water, what is the vapor pressure
PH2O of the resulting solution? The vapor pressure of pure
water is 23.8 torr at 25 ∘C .
Part B
A solution is composed of 1.00 mol cyclohexane
(P∘cy=97.6 torr) and 2.10 mol acetone (P∘ac=229.5
torr). What is the total vapor pressure Ptotal above this
solution?
Part C
What is the freezing point of radiator fluid that is 50%
antifreeze...