Rebreathing from a closed bag results in arterial hypercapnia
(raised partial pressure of carbon dioxide), which stimulates
respiration. Briefly explain this neural mechanism.
The partial pressure of argon in the atmosphere is 7.10torr .
Calculate the partial pressure in mmHg and atm . Round each of your
answers to 3 significant digits.
Partial Pressure:
a) Calculate the partial pressure of oxygen and hydrogen in a
mixture of 35.0 g of oxygen gas and 11.5 g of hydrogen gas in a 2.0
L container at 35F?
b) Within a balloon, there are 3 types of gasses. The first gas
is 6 moles in amount, the 2nd is 4 moles and the 3rd is 3.5. If a
total pressure of 10 atm was felt by the balloon and labeled the
1st, 2nd, 3rd gas...
1a/ A mixture of helium and carbon
dioxide gases, at a total pressure of 743
mm Hg, contains 0.397 grams of
helium and 9.33 grams of
carbon dioxide. What is the partial pressure of
each gas in the mixture?
PHe = (......) mm Hg
PCO2 = (......) mm Hg
1b/ A mixture of methane and
xenon gases contains methane at a
partial pressure of 488 mm Hg and
xenon at a partial pressure of
386 mm Hg. What is the...
A mixture of carbon dioxide and nitrogen gases, at a total
pressure of 889 mm Hg, contains 7.17 grams of carbon dioxide and
5.38 grams of nitrogen. What is the partial pressure of each gas in
the mixture?
PCO2 =___(?)___ mm Hg
PN2 = __(?)__ mmHg
pH is a measure of proton activity and not concentration.
(a) Calculate the pH of water (T = 25o C) containing only 10-7 M
H+ , i.e. in ultrapure water.
(b) If the same water also contains 0.36 M NaCl, re-calculate the
pH. Use the Debye-Huckel equation with A = 0.511 as an
approximation to calculate the activity coefficient.
(c) Explain the difference in pH.
What is the pH at 25 ∘C of water saturated with CO2 at a partial
pressure of 1.20 atm ? The Henry's law constant for CO2 at 25 ∘C is
3.1×10−2mol/L-atm. The CO2 is an acidic oxide, reacting with H2O to
form H2CO3.
a mixture of oxygen, hydrogen, carbon dioxide and
methane gases have a total pressure of 1.3 ATM. if the partial
pressure of hydrogen is 2.4 PSI, the partial pressure of carbon
dioxide is 110 torr can the partial pressure of methane is 0.22
ATM, how many mmhg does oxygen exert?
* Calculate the concentration of argon in the Pacific Ocean
given that the partial pressure of argon is 0.00934 atm. The
Henry’s law constant for argon in water at 25ºC is 1.4 x 10-3
mol/L·atm.
* The solubility of potassium chloride (KCl) is 34.2 g per 100.0
g of water at 20ºC.
Calculate the molality of a saturated solution of potassium
chloride.
Is a 4.00 m solution of potassium chloride in water at 20ºC
saturated, supersaturated, or unsaturated?
Answer: saturated,...