Which one of the following is a combustion reaction? a. ch4 + 2 o2 co2 + 2 h2o b. hbr + naoh nabr + h2o c. xe (aq) + h2o(l) hxe(aq) + oh- (aq) d. nacl (aq) + agno3 (aq) nano3 (aq) + agcl (s)

How many atoms of mg are present in 97.22 grams of mg? 6.022 × 1023 2.408 × 1024 4.818 × 1024 5.855 × 1025

Select all of the statements which are true. electrons are located in shells or orbits around the atom. electrons orbit slowly around the atom. electrons travel in one flat path around the nucleus of an atom. the valence of an atom is determined by the number of electrons in the atom's outermost shell.

What are several ways to reduce the effect of friction