Exploring properties of gases lab answers

Volume in the syringe (mL) The Experiment is Exploring the Properties of Gases 25 Volume and Absolute Temperature 20 15 10 5 0 318.75 315.15 310.65 306.65 Abuslote Temperature (ºC) 301.05 #Answer the following questions: 1- what is the purpose for this experiment. 2- Hypothesis for this Experiment. 3-Analyze 4 tables and graph (in paragraph). 4- Analysis of the results (in paragraph) 5- Sample Calculations ( in paragraph) FOR EXAMPlE: The formula to calculate the volume of the object, volume of sphere = 4/3 r3, simply put values of pi = 3.14 and r =d/2 and apply the formula for density = mass / volume, get the answer for gold sphere = 4/3×3.14× (0.75)3 = 3.13 cm3. For the rectangle thin sheet, formula of volume will be length*width*height = 7.2×0.68×0.68 = 3.32 cm3 for right circular cylinder, formula for volume, V = r2h = 3.14 * (4.26)2 *0.62 = 3.26 cm3. For rectangular prism, formula V = l ×w×h = for pyramid 1/3 × B×H, B stands for base area and H stands for height. = 1/3 l×w×h = 1/3 ×2.86×.65×1.65 = 2.59 cm3 for density just divide mass by volume calculated. For the second part of the experiment, calculations are easy, volume of metal by subtracting volume of water + metal, by volume of water = volume of metal, for density divide mass by calculated volume 6-At constant temperature, if n represents the moles of gas present, what would be the expected relationship between pressure (P) and the number of moles of gas (n).Hint: Assume that Avogadro’s hypothesis that “equal volumes of gases, at the same temperature and pressure, contain equal numbers of molecules” is true.? 7-From your plot of pressure vs. temperature, why is the unit of temperature in the gas equation reported in Kelvin? What would happen if degrees Celsius were used? 8-In Part III, as you placed the apparatus in the warm water bath, you should have noticed the volume of air in the syringe increased. Explain what has happened to the gas. What variable should have remained constant? ...