Space station . You are designing a space station and want to get some idea how large it should be to provide adequate air for the astronauts. Normally, the air is replenished, but for security, you decide that there should be enough to last for two weeks in case of a malfunction, (a) Estimate how many cubic meters of air an average person breathes in two weeks A typical human breathes about 1/2 L per breath, (b) If the space station is to be spherical, what should be its diameter to contain all the air you calculated in part (a)?
Space station . You are designing a space station and want to get some idea how large it should be to provide adequate air for the astronauts. Normally, the air is replenished, but for security, you decide that there should be enough to last for two weeks in case of a malfunction, (a) Estimate how many cubic meters of air an average person breathes in two weeks A typical human breathes about 1/2 L per breath, (b) If the space station is to be spherical, what should be its diameter to contain all the air you calculated in part (a)?
Space station. You are designing a space station and want to get some idea how large it should be to provide adequate air for the astronauts. Normally, the air is replenished, but for security, you decide that there should be enough to last for two weeks in case of a malfunction, (a) Estimate how many cubic meters of air an average person breathes in two weeks A typical human breathes about 1/2 L per breath, (b) If the space station is to be spherical, what should be its diameter to contain all the air you calculated in part (a)?
One mole of Gold (Au) atom has a mass of 197 g. We know that the density of gold is 19.30 g/cm3 in room temperature. Using those numbers, answer the following questions:
a) What is the mass of a single gold atom in kg?
b) Assume that gold atoms sit in a perfect cubic crystal structure. Estimate the distance between two gold atoms in meters.
c) If we have a gold cube of 6 cm on each side, how many atoms can we fit along the edge of each side of the cube?
d) What would be the mass, in kilograms, of the gold cube we discussed in part (c) (measuring 6 cm on each side)?
The density of platinum is 21.45 x 103 kg/m3.
a. Calculate the volume (in m3/atom) occupied per platinum atom
b. Estimate the atomic diameter (in m);(The estimate uses the approximation that it is a cubic volume)
c. Using this estimation, calculate the thickness of a metal foil (in m) containing 2.0 x 101 atomic layers of platinum.
If you used only a keyboard to enter data, how many years would it take to fill up the hard drive in your computer that can store 95gigabytes95gigabytes (95×109bytes95×109bytes) of data? Assume "normal" eight-hour working days, and that one byte is required to store one keyboard character, and that you can type 180 characters per minute.
Express your answer using two significant figures.
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