A parachute on a racing dragster opens and changes the speed of the car from 85 m/s to 45 m/s in a period of 4.5 seconds. What is the deceleration (negative acceleration) of the dragster? acceleration=m/s2

Is powdered sports drink ionic or covalent ? 10pts !

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.

How many moles of potassium are needed to react completely with 12.8 moles of magnessium bromide?