Asubstance with a density of 2.70 g/ml occupies a volume of 21.3 ml. what is the mass of the sample? report your answer in units of mg. use significant figures. do not enter “mg” as part of your answer. do not use scientific notation.

What is the mass of each element in a 324.8 sample of co2

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?