The percentage c by mass in the above unidentified substance is 54.5%. it may also contain h and/or o, but no other element. what is the molecular formula of the substance? (in typing this formula use the convention of c first, h second and o last. for example, c6h8o2 would be c6h8o2.)

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

100 points answer quick 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.

How would you reduce the volume of gas