PLEASE HELP I GIVE YOU BRAINLIEST JUST REALLY HELP ME

Desiré was investigating a chemical reaction. When she heated it up, she found that sulfuric acid (H2SO4) changed into water (H2O). She made the following atomic-scale model to show what she thinks happened. Do you think this is a complete model of what happened during the chemical reaction?Why or why not? *

Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt

Rank the following four acids in order of increasing bronsted acidity : h2f+ , ch3oh, (ch3)2oh+ , ch3sh2+

Ok, so i have 2 questions. try to answer them both: (the topic is fire) 1) how can you represent the chemical reaction of fire? 2) what kind of bond is formed in this chemical reaction