Calculate the standard heat of the neutralization reaction between dilute hydrochloric acid and dilute potassium hydroxide, given that the heat of solution of potassium hydroxide is -54.01 kj/mol, the heat of formation of potassium hydroxide is -426.84 kj/mol, the heat of solution of potassium chloride is 18.426 kj/mol, and the heat of formation of potassium chloride is -436.584 kj/mol. number ah," = kj/mol b) calculate the heat of reaction for the reaction of gaseous hcl and solid koh to form liquid water and solid kci. number añ° = 10 kj/mol

When 225mg of anthracene, c14h10(s), was burned in a bomb calorimeter the temperature rose by 1.75k. calculate the calorimeter constant. by how much will the temperature rise when 125mg of phenol, c6h5oh(s), is burned in the calorimeter under the same conditions? (δch< (c14h10,s)=–7061 kj mol−1.)

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?

98 points you will be galileo perform the experiment to determine if objects with different mass fall at the same, or different, rates in the air and in a vacuum. before you conduct your experiment, you need to form a hypothesis. a hypothesis is a prediction of what you think will happen in the experiment. the hypothesis is a statement that describes “if” a certain set of circumstances are present “then” there will be a specific result that will occur. record your hypothesis here: record the results from step one of the experiment (dropping the objects in the air): first trial: second trial: third trial: record the results from step two of the experiment (dropping the objects in a vacuum): first trial: second trial: third trial: did the experiment support your hypothesis? using the data from your experiment, describe why you believe your hypothesis was either proven or disproven. what forces were acting on the objects dropped in the air? what force was acting on the objects dropped in the vacuum? part two: comparing forces choose two forces and compare and contrast these forces. you must provide two ways that they are alike and two ways that they are different. you may make a list, write in paragraph form, or make a chart. choose two forces and compare and contrast these forces. these must be different forces than used in the prior question. provide two ways that they are similar and two ways that they are different. you may make a list, write it out, or make a chart.