Given the equation q = mcAT solve for m (rearrange the equation)

Which one of the following gases is not an important component of soil?

Can someone me with questions 15 to 17 plz.

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.