Bill wants to do an investigation to compare the inertia of different balls. He plans to use a fan to exert a force on the balls. He will roll a ball past a fan to see how much the ball’s movement changes. Bill will use several balls with different masses and use the same fan settings for each test. The dependent variable would be

The independent variable would be

Drive down any three characteristic of modern periodic table

Aroom with dimensions 7.00m×8.00m×2.50m is to be filled with pure oxygen at 22.0∘c and 1.00 atm. the molar mass of oxygen is 32.0 g/mol. how many moles noxygen of oxygen are required to fill the room? what is the mass moxygen of this oxygen?

What is the typical rotational frequency frot for a molecule like n2 at room temperature (25∘c)? assume that d for this molecule is 1å=10−10m. take the total mass of an n2 molecule to be mn2=4.65×10−26kg. you will need to account for rotations around two axes (not just one) to find the correct frequency. express frot numerically in hertz, to three significant figures.