What is the number of molecules in 16.5 liters of N2 gas at STP?

2.24 X 1026 molecules N2
8.17 X 1023 molecules N2
6.14 X 10-22 molecules N2
4.43 X 1023 molecules N2

__can be defined as which velocity changes

Suppose the universe were completely empty except for one object-a solid sphere moving through space of 100 km/s. what sort of path would the object be moving in? explain your answer

Which of the following has wavelength longer than the wavelength of viable light? a) x rays b) gamma rays c) radios waves d) ultraviolet waves