Which of the following is NOT an example of matter?

Air

Heat

Smoke

Water vapor

The same force is used to kick both of these objects below. Which will have greater acceleration? Bowling ball Soccer Ball They will accelerate the same Neither will accelerate

How me and other scientists know about animals that went extinct for million people million of years ago

What is the relationship between frequency and energy? (Direct or Inverse)

71 x10^3 in scientific notation

Which are isotopes? an atom that has an atomic number of 20 and a mass number of 42 is an isotope of an atom that has?

There is inverse relation between pressure and diffusion in liquid phase? •True •False

What do you need in order to do a stoichiometric calculation? (Choose multiple) Balanced Chemical Equation Molar masses of compounds involved The type of reaction taking place Oxidation Numbers

The correct mathematical expression for finding the molar solubility (s) of sn (oh) 2 is:

18. which bond is most polar? H--F H--Cl H--Br H--I

What kind of reaction is ca (s) + h3po4 (aq) ca3 (po4) 2 (s) + h2 (g)