If you were to take a voyage through the entire disk of the Milky Way, what kind of material would you spend most of your time in?
A) empty space-a pure vacuum
B) rarefied clouds of atomic hydrogen
C) star clusters
D) hot bubbles of ionized hydrogen
E) cool, dense clouds of molecular hydrogen
B
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You are moving past the Earth at 0.99c and notice your heart beating 88. times/minute
(a) Your doctor on Earth observes your heart rate to be what? (b) If you had been moving 99.99% the speed of light, you would have observed your heart to be beating how fast?
An ideal gas has a pressure of 2.5 atm, a volume of 1.0 L at a temperature of 30°C. How many molecules are there in this gas? (R = 8.31 J/mol ? K,1.00 atm = 101 kPa, NA = 6.022 × 1023)
A) 2.4 × 1022 B) 6.1 × 1023 C) 2.3 × 1023 D) 6.0 × 1022
The term age of ancient life is sometimes used to refer to the ______________ era
Fill in the blank(s) with correct word
Do the data taken in the experiment support the idea that the pressure times the volume for an ideal gas is constant when the temperature remains at the same temperature?