hello plz call me ShadowTale! and I'm on a break with my gf. We are going online to find people to date. Im allowing Boys & Girls 12-14 and I'm 13.

Rank the four gases (air, exhaled air, gas produced from from decomposition of h2o2, gas from decomposition of nahco3) in order of increasing concentration of co2

What is the average rate of the reaction between 10 and 20 s?

On the periodic table, elements are arranged by which of the following. a. mass numbers. b. increasing atomic number. c. alphabetical order. or d. density