Asample of magnesium chloride, mgcl 2, contains 1.215 g of mg for every 3.546 g of cl. how many grams of chlorine are in another sample of magnesium chloride that contains 7.290 g of mg?

Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules

Fred is studying a substance that is made out of only one element. this means that

Calculate the ph at the equivalence point for the titration of a solution containing 150.0 mg of ethylamine (c2h5nh2) with 0.1000 m hcl solution. the volume of the solution at the equivalence point is 250.0 ml. kb forethylamine is 4.7 × 10−4 .