Determine the mass in grams of lead (II) iodide that will
dissolve in 500.0 mL of a solution containing 1.82 grams of lead
(II) nitrate. Ksp of lead (II) iodide is 1.4 x 10-8.
The formula for methane is CH4 and it’s molar mass is
16.04 grams/mol.
(a) How many moles of methane are in 2.750 grams of methane?
(b) How many molecules of methane are in a 11.5 mole sample?
20.26 grams of unknown
1
(with molar mass 203.67 g/mol) was dissolved in 182.7 mL of
ethylene glycol in a calorimeter. What change in temperature would
the solution experience as a result of this dissolution? Assume the
solution has the same specific heat capacity as pure ethylene
glycol. The density of ethylene glycol is 1.11
g/cm3.
The ∆Hdissolution
for
unknown 2
is 124.1 kJ/mol
unknown 1.
You have 750 mL of a solution that is composed of 9.11 grams of
NH3 and 19.33 grams of Ammonium Chloride mixed well. Kb for ammonia
= 1.8x10^-5. a.) Is this a buffer solution? Why or why not? b.) If
so, what is the pH of this buffer solution? c.) How many mL of 6.00
M HCl can be added to this solution before the buffer is exhausted?
d.) How many mL of 6.00 M NaOH can be added to...
Calculate how many mL of 0.100 HCl should be added to how many
grams of sodium acetate dihydrate (NaOAc * 2H2O, FM 118.06) to
prepare 250.0 mL of 0.100 M buffer, pH 5.00.
How many grams of KSCN are required to just completely
dissolve 1.44 g AgCl(s) in 0.10 L water? [Kf for Ag(SCN)4^3– is 1.2
×1010; Ksp(AgCl) = 1.6 ×10^10]