What conclusion does he finally come to about his feelings about the house? a.)they are so run-down-of course they are scary. b.)sometimes simple things are combined in ways that we just can’t analyzec.)the house is hauntedd.)the moat or tarn around the house is what makes the house seem so frightening

the answer to your question is c.

if you read the house of usher you should know that the house was haunted

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.

gasoline is a mixture. it contains several different kinds of compounds that can be present in a variety of ratios.