Acertain metal m forms a soluble nitrate salt m no suppose the left half cell of a galvanic cell apparatus is filled with a 3.00 mm solution of m(no) and the right half cell with a 3.00 m solution of the same substance. electrodes made of m are dipped into both solutions and a voltmeter is connected between them. the temperature of the apparatus is held constant at 20.0 °c. o left right which electrode will be positive? what voltage will the voltmeter show? assume its positive lead is connected to the positive electrode. be sure your answer has a unit symbol, if necessary, and round it to 2 significant digits.

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.