Another conversion that can be made with the unit moles involves substances in the gaseous state, Substances that are a gas at S. T.P (standard temperature and pressure which is the only kind we will deal with for now) will have a volume of 22.4L for every 1 mole, This means that if I have a certain number of moles of gas, then I can determine the volume of that gas,
Or if I have a certain number of Liters of the gas, than I can determine the number moles,

Answer the following two questions, handwriting your work, and upload a picture of that work, with your
answers boxed,
1) How many moles of Hydrogen gas are present in a sample of 37.6 L?
2) How many liters of Oxygen gas are present in a sample of 0.36 moles?
Bonus: How many molecules of Oxygen would be present in the sample from question #2?

Calculate the energy required to ionize a hydrogen atom to an excited state where the electron is initially in the n = 5 energy level. report your answer in kilojoules

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.

Which symbol can be used to indicate the pressure at which a chemical reaction is carried out? 25°c 2 atm pa