1. a student carried out a dehydration experiment using mgso4. nh20. the student placed an evaporating dish which contained 3.8457 g of mgso4. nh20 in an oven at 110 °c. at this temperature, some but not all of the water in this hydrate was lost. when a constant mass was achieved, the salt weighed 2.4402 g. the student then placed the evaporating dish and contents back in the oven at 160 o°c. the residue came to a constant mass of 1.8779 g. stronger heating produced no further loss in mass so we can assume all the water has evaporated. assume that this final residue is the completely anhydrous compound (see 1t page for definition). the water is lost in molecular steps and the formulas must be written with integers and not fractions a. what is the formula of the 1.8779 g sample? b. what is the formula of the 2.4402 g sample? c. what is the formula of the 3.8457 g sample?

yea hi

explanation:

i have no clue hope you find the answer

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.