In a typical experiment, 100 mL of water is placed in the polystyrene foam cup and the initial temperature of the water recorded.5.05 g potassium nitrate, KNO3(s), is added to the water while stirring. The temperature of the solution falls and the minimum temperature acheived is recorded as the final temperature. The results of the experiment are shown in the table below. volume of water =100 mL mass of KNO3(s) = 5.05 g initial temperature = 25.0°C final temperature = 21.7°C. Determine the heat of solution of potassium nitrate.​

Astudent made the lewis dot diagram of a compound as shown. mg is written with two dots shown on its top. an o is written on each side of mg. each o has six dots around it. an arrow is shown from one dot on mg toward the vacant space around the o on the right. another arrow is shown from the other dot on mg toward the vacant space around the o on the left. the title of the art is students lewis dot model. what is the error in the lewis dot diagram? an o atom should transfer all its six electrons to mg because the formula is mgo. both electrons of mg should be transferred to one o atom because the formula is mgo. the electrons should be transferred from each o atom to mg because mg has fewer electrons. the number of dots around mg should be four because it has to transfer two electrons to each o.