A 5.50 L sample of neon at 6.67 atm is added to a 10.0 L cylinder that contains argon. If the pressure in the cylinder is 7.63 atm after the neon is added, what was the original pressure (in atm) of argon in the cylinder?

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. What is the same rate of transfer in μmol/s. Give your answer to 1 significant figure.

A Mixture Problem In an oil refinery, a storage tank contains 10,000 [L] of gasoline that initially has 50 [kg] of an additive dissolved in it. In preparation for winter weather, gasoline containing 0.2 [kg] of additive per litre is pumped into the tank at a rate of 200 [L/min]. 200 L/min containing 0.2 kg/L 220 L/min containing kg/L Where y is the amount of chemical in the container at time t, and V is the total volume of liquid in the container at time t, a) Write a formula V(t) for the capacity (volume) of the tank at any time. b) Find the domain of V for this problem. c) Find the rate of incoming additive in [kg/min]. d) Find the rate of outgoing additive in [kg/min]. e) Express the rate of change of the amount of chemical in the container at time t in its standard form. f) Calculate how much of the additive is in the tank 25 minutes after the pumping process begins.

The volume of an automobile tire is 2.5 × 10−2m3 . the pressure of the air in the tire is  3 atm and the temperature is 37C ◦ . what is is the mass of air in grams ? The mean molecular mass of air is 29g.                                     1 atm = 1.01  × 105 Pa ;    Calculate to 2 decimals.

A volume of 58.0 L of hydrogen is heated from 33°C to 68°C. If its original density is 4.85 kg/m3 and its original absolute pressure is 120 kPa, what is the resulting density?

At standard temperature and pressure, a gas has a density of 0.085 kg/m3.  What volume (in m3) does 1.03 kg of hydrogen occupy at standard temperature and pressure

Given: a sample of copper has a mass of 48.62 g when measured in air and a mass of 43.19 g when measured completely submerged in water. Copper has an atomic number of 29 and an atomic mass of 63.546. You only need to determine the density of the sample and determine the radius of the copper atom.

A 5 L tank contains Argon gas at 55°C and 4.5 atm. Find the total translational kinetic energy of all the Argon atoms in the tank. 1 atm = 1.013 x 10^5 Pa 1 L = 10^-3 m^3 R= 8.314 J/K-mol Molar mass of Argon= 40 Kb=1.38 x 10 ^-23 J/K

A rigid tank contains 2500L of argon gas. The pressure is 3790k Pa and the temperature is 25 Celsius. How many moles of Argon are in the tank?

A storage tank contains 21.6 kg of nitrogen(N2) at an absolute pressure of 4.49 atm . What will the pressure be if the nitrogen is replaced by an equal mass of CO2?