Iron plus chlorine gas forms iron iii chloride. if 213.0 grams of chlorine gas reacts with excess iron, how many grams of iron iii chloride is formed?

328.6g

Explanation:

Write a balance equation for the reaction.

2Fe + 3Cl2> 2FeCl3

From the equation you find out that reacting

3moles of chlorine produces 2moles of FeCl3

Hence.

3 * 70g > 2 * 162

213g > x

X = 328.6g //

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.