The partial pressure of oxygen in the lungs is about 150 mm of Hg. (The partial pressure is the pressure of the oxygen alone, if all other gases were removed.) This corresponds to a concentration of 5.3 × 1024 molecules per m3. In the oxygen-depleted blood entering the pulmonary capillaries, the concentration is 1.4 × 1024 molecules per m3. The blood is separated from air in the alveoli of the lungs by a 1-μm-thick membrane. What is the rate of transfer of oxygen to the blood through the 5 × 10-9 m2 surface area of one alveolus? Give your answer in both molecules/s and μmol/s. Assume The diffusion coefficient for oxygen in tissue is 2 × 10-11 m2/s.

Q: The Oxygen Room  A room with dimensions 7.00m×8.00m×2.50m7.00m×8.00m×2.50m is to be filled with…

A: Given, Temperature = 22.0°C = 22.0+273 =295K   Pressure = 1.0 atm  Volume of oxygen is equal to the…

Q: 3. Potassium permanganate is produced commercially by the this reaction: K.MnOafaq) Ch(g) KMNO(s)…

A: Since you have posted multiple questions, we are entitled to answer the first only. Please repost…

Q: A bubble of air escaping from a diver's mask rises from a depth of 144 ft to the surface where the…

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Q: What is the volume (in liters) occupied by 52.0 g of HCl at STP?

A: The solution is given below -

Q: What volume (in L) of 1.40 M FeBr₂ would be required to obtain 0.890 moles of Br⁻ ions?

A: Molarity = number of moles/volume in Litre Given, molarity = 1.40 M  Number of moles of Br- = 0.890…

Q: How many millimoles (1000 mmoles = 1 mole) of hydrogen gas can be generated when 0.0350 grams of…

A: Magnesium reacts with hydrogen chloride to form hydrogen gas and magnesium chloride. The equation…

Q: What is the volume (in liters) occupied by 49.4 g of HCl at STP?

A:

Q: 6.The combustion of propane gas produces carbon dioxide and water vapor.…

A: The balanced equation for the combustion of propane gas is as follows. C3H8g+5O2g→3CO2g+4H2Og From…

Q: A bottle of concentrated HClO4 has the following information on its label: gmw= 100.5, SG= 1.60; 70%…

A: Given that   molar mass of HClO4 = 100.5 g/mol Specific gravity (SG) = 1.60 Mass percent of the…

Q: 2. What is the molar mass of a gas if it diffuses 0.907 times the speed of argon gas? 1. (a) What is…

A:

Q: A gaseous mixture contains 18% oxygen, 78% nitrogen and the remaining is that of an unknown gas. The…

A: Mass fraction is the ratio of the mass of the individual constituent to the total mass of the…

Q: 6. A gas mixture contains 5 x 10°mole CO and has a total of 1 mole. What is the CO concentration in…

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Q: A.) An aqueous solution of potassium acetate, KCH3COO, contains 3.47 grams of potassium acetate and…

A: The answers to the following Questions are given as:

Q: How many liters of H2(g) at STP are produced per gram of Al(s) consumed in the following reaction?…

A: The given reaction is as follows: 2Al(s) + 6HCl(aq) → 2AlCl3(aq) + 3H2(g) At STP condition the…

Q: How much mass is required to make 7g of NH; saturated at 145g H,O at 10°C?

A:

Q: What volume of gas will be produced when 38 mL of 0.40M NH4NO3 reacts with an excess of aqueous…

A: The reaction is as follows: NH4NO3+NaOH→NaNO3+NH3+H2O The gas produced in the reaction is NH3 The…

Q: What volume of H2 gas (in liters), measured at 27°C and 742 torr, can be obtained by reacting 4.09 g…

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Q: 1. The surface atoms of aluminum metal corrode in air to form an impervious aluminum oxide coating…

A:

Q: O2 molecules and the vapor pressure of water at body temperature (37 °C) is 47 mm Hg. Taking the…

A: Given data: Vapour pressure of of water (Pvapor) = 47 mm Hg Total barometric pressure (Ptotal) = 621…

Q: Carbon dioxide can be generated by the reaction of hydrochloric acid with calcium carbonate. How…

A: moles of CaCO3 taken = mass / molar mass of CaCO3  = 32.1 / 100 = 0.321 moles of HCl taken =…

Q: (b) A student knew that calciun hydroxide could be made by adding calcium to water. The student…

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Q: A chemist was asked to prepare a 2 L of diluted ammonia with initial concentration of 2 Normally, So…

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Q: H2O2 is commonly used as a mild oxidizing agent. If you only need 1.50 x 104 mol H2O2 to run a…

A: Given: Moles of H2O2 required = 1.50 × 10-4 mol. Density of H2O2 solution = 1.11 g/mL. And %(w/w) of…

Q: _t volume of the 1.76 M H2O2

A:

Q: A bubble of air escaping from a diver's mask rises from a depth of 108 ft to the surface where the…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Which of the following substances was used to test for the pressence of carbon dioxide in expired…

A: The chemical formula of cabon dioxide is CO2.

Q: Assuming that the temperature of the atmosphere at 33.5 km of altitude is -33 °C, the concentration…

A: Given: Height or altitude of lake = 33.5 Km = 33500 m                              (Since 1 km =…

Q: What is the mass of a 5.6 liter (STP) sample of CO2 gas?

A: Given data, CO2 gas = 5.6 L 1 mole of CO2 occupies = 22.4 lit at S.T.P

Q: 1. Calculate the volume of 02 at STP needed to react with 150 g of CH4 (MM=16 g/mol) CH4 (g) + 202…

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Q: At a temperature of 25°C a bicycle tire has a pressure of 140. psi with 4.09 x 10-2 moles of…

A: Given P1 = 140 psi n1 = 4.09 × 10-2 P2 = 130 psi n2 = ? Volume constant

Q: A chemist adds 0.35 L of a 0.132M barium chlorate (Ba(Clo, solution to a reaction flask. Calculate…

A: Given:: Molarity = 0.132 M volume = 0.35 L no. of moles = ?

Q: The partial pressure of oxygen in the lungs is about 150 mm of Hg. (The partial pressure is the…

A: Given, Partial pressure of oxygen in lungs = 150 mmHg Diffusion coefficient for oxygen = 2×10-11m2s

Q: Calculate the volume of oxygen gas produced at STP (1 atm., 0°C) by the complete decomposition of…

A:

Q: If 2.00 g of helium gas and 5.46 g of oxygen gas are mixed together, what is the mole fraction of…

A: mole fraction of a solute in solution is equal to moles of solute divided by the total moles of all…

Q: Workers in underwater caissons or diving suits necessarily breathe air at greater than normal…

A: Solution -

Q: 2. A. Write a balanced chemical equation for the reaction, in aqueous solution, between silver…

A: We have to predict the balance chemical equation ,as well as moles and molecules of air.

Q: 1) a) Sulfuric acid, the industrial chemical produced in the greatest quantity each year, is…

A: No of moles = Mass  Molar mass So, Moles of S = 1850 g 32 g/mol = 57.8 mol

Q: Calculate the volume of H2(g) at 273 K and 2.00 atm that will be formed when 275 ml of 0.725 M HCI…

A: Volume of HCl=275mL = 0.275 L (1 L = 1000 ml) Molarity of HCl = 0.725M Temperature =273K Pressure…

Q: What is the concentration of helium dissolved in 3.5 L of water when enclosed in a sealed container…

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Q: A chemist adds 385.0mL of a 0.071/molL potassium permanganate KMnO4 solution to a reaction flask.…

A:

Q: How many liters of oxygen gas are needed to react with 1.3 x10 23  molecules of glucose?

A: The reaction of glucose with oxygen: C6H12O6  +  6O2  →  6CO2  +  6H2O So, 1 mole of glucose reacts…

Q: Calculate the number of miles of baking soda present in the volume of a standard teaspoon, show your…

A:

Q: vinegar?  3. What volume would this amount of gas occupy at room temperature (25.0 °C)? At…

A: Given that -  Mass of sodium bicarbonate = 5.00 g  Pressure = 1.01325×105 pa = 1 atm  Temperature =…

Q: 4HCI (g) + O2 (g)= 2H2O (g) + 2C12 (g) a. Volume is increased: b. Some Argon gas is added: c.…

A: The given reaction is : The shift of equilibrium happens to counteract the change in a system,…

Q: What volume of concentrated sulfuric acid that is 18M is required to obtain 2.9 moles of the acid?

A:

Q: At room temperature, water is a liquid with a molar volume of 18 mL. At 105°C and 1atm pressure,…

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Q: The concentration of an old solution of hydrogen peroxide is being tested because hydrogen peroxide…

A:

Q: When concentrated sulfuric acid is sold to chemist, the label contains no mention of the molarity of…

A: Given that -  Percentage of commercial Sulfuric acid = 98% (w/w)  Density of this acid = 1.80 g/mL…

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.