I'm struggling with figuring out the answer to my homework question:   If the density of dry air is 1.28kg/m^3 then what is the mass of the air in the room in kg that the air conditioner has to move?

The density of a gas is 0.417 kg/m^3. What is the specific volume of the gas?

The small capillaries in the lungs are in close contact with the alveoli. A red blood cell takes up oxygen during the 0.5 s that it squeezes through a capillary at the surface of an alveolus. What is the diffusion time for oxygen across the 1-μm -thick membrane separating air from blood? Assume that the diffusion coefficient for oxygen in tissue is 2×10^−11 m2/s. Give your answer to 1 significant figure.

The basic function of an automobile's carburetor is to atomize the gasoline and mix it with air to promote rapid combustion. Assume that 40 cm? of gasoline is atomized into N spherical droplets. Each droplet has a radius of 2.0 x 10-5 m. Find the total surface area of these N spherical droplets.

A tank containing water is pressurized with air to a pressure of 30 psig. With the pressure in the tank as the driving force, the tank is feeding water at a rate of 15 GPM to another tank at atmospheric pressure through a 1.5 inch line. What would the pressure in the tank need to be increased to in order to increase the flow to 30 GPM?

A compressed gas with a total mass of 107 kg is stored in a spherical container having a radius of 0.521 m. What is the density of the compressed gas? O 181 kg/m3 O 161 kg/m3 O 110 kg/m3 O 134 kg/m3 Submit Request Answer

Invalid path. A light balloon is filled with 383 m3 of helium at atmospheric pressure. (a) At 0°C, the balloon can lift a payload of what mass? kg (b) In the table below, observe that the density of hydrogen is nearly half the density of helium. What load can the balloon lift if filled with hydrogen? kg Densities of Some Common Substances at Standard Temperature (0°C) and Pressure (Atmospheric) p(kg/m3) p(kg/m3) Substance Substance Air 1.29 Ice 0.917 X 103 7.86 X 103 11.3 X 10 13.6 X 10 Aluminum 2.70 X 103 Iron Benzene 0.879 X 103 Lead 8.92 X 103 Mercury Copper Ethyl alcohol 0.806 X 105 Oak 0.710 X 103 Fresh water 1.00 X 103 Oxygen gas Pine 1.43 Glycerin 1.26 X 103 0.373 X 103 Gold 19.3 X 10 Platinum 21.4 X 10 1.03 X 10 10.5 X 10 Helium gas 1.79 X 10-1 Seawater Hydrogen gas 8.99 X 10-2 Silver

The volume of a 500 g sealed packet is 350 cm3. Will the packet float or sink in water if the density of water is 1 g cm–3? What will be the mass of the water displaced by this packet?

An airplane passenger has a volume V1 of air in his stomach just before the plane takes off from a sea-level airport. What volume will this quantity of air have at cruising altitude at the same temprerature ( body temp. ), in terms of V1, the pressure on the ground P1, and the cabin pressure at cruising altitude P2?  What is this volume, in cubic centimeters, if the initial volume is 110 cm^3 and the cabin pressure drops to 7.5x10^4 Pa when the plane is at cruising altitude?

A lottery machine uses blowing air to keep 2000 Ping-Pong balls bouncing around inside a 1.0m×1.0m×1.0m box. The diameter of a Ping-Pong ball is 3.0 cm. What is the mean free path between collisions? Give your answer in cm.