What volume in ml of 2. 5 m sodium acetate is needed to make 250 ml of the acetic acid/acetate ion buffer that has an acetate ion concentration of 0. 10 m?.

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 metal exist in liquid state and can be cut with knife ?

Find the mass, in grams, of 5.00*10^23 molecules of f2