How many moles of mgcl2 are there in 342 g of the compound?

There are  342 g/ 95. 2 g/m = 3.59 moles

Explanation:

MgCl2 → Molar mass is 95.2g g/m

This is the mass in one mol so to find out the moles in 342g we have to divide the mass between the molar mass.

342 g/ 95. 2 g/m = 3.59 moles

3.6 moles of are present in 342 g of

Explanation:

Given the weight of compound  = 342 g

Atomic Mass of Mg = 24 amu

Atomic Mass of Cl = 35.5 amu

Computing the molar mass of  = amu = 24 + 71 = 95 amu

No. of moles of a compound is calculated by the formula =

Substituting the value,

Moles =

Therefore, 3.6 moles of  are present in 342 g of

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.