Cho hỗn hợp A gồm Mg và Fe tác dụng với một lượng vừa đủ dung dịch H 2 SO 4 19,6% loãng thu được dung dịch B có nồng độ phần trăm của FeSO 4 là 7,1%. Tìm nồng độ C% của muối MgSO 4 trong dung dịch B.

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.

plasma - state of matter made up of electrically charged particles

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.