In which group do most of the elements have 8 valence electrons?

Why doesn't heat added to water make the tempature rise above 100c

An alkaline battery produces electrical energy according to the following equation. zn(s) + 2 mno2(s) + h2o(l) zn(oh)2(s) + mn2o3(s) (a) determine the limiting reactant if 17.5 g zn and 31.0 g mno2 are used. (type your answer using the format ch4 for ch4.) (b) determine the mass of zn(oh)2 produced. _ g

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true