How many moles of chloride ions are in 0.2550 g of aluminum chloride using alcl3 's molar mass of 133.34 g / mol: ?

Explanation:

It is known that number of moles is the amount of mass present in a given molar mass of the substance.

Mathematically,   No. of moles =

We are given that mass of is 0.255 g and molar mass of is 133.34 g/mol.

Therefore, number of moles of is calculated as follows.

        No. of moles =

                              =  

                              = mol

Since, there are three chlorine atoms present in one mole of . Therefore, moles of chlorine ions present in given 0.255 g will be calculated as follows.

              mol

            =

Thus, we can conclude that chloride ions are in 0.2550 g of aluminum chloride using 's molar mass of 133.34 g/mol.

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.