Would you expect the amount of heat released/absorbed for the dissolution of 4 grams of NH4NO3(s) in 50.0 grams of water to be greater than, less than, or equal to the amount of heat released/absorbed for the dissolution of 2 grams of NH4NO3(s) in 50.0 grams of water? Explain.

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

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

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)