The nitrogen gas in a car's air bag, with a volume of (6.8x10^1) L exerts a pressure of (8.460x10^2) mmHg at 25 °C. What amount of N2 gas (mol) is in the air bag?

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?