4. Graphing is an essential skill used throughout chemistry courses and other sciences. Here is aproblem dealing with the creation and use of a graph. The solubility, S, of K2SO4 is given as grams K2SO4 per 100.0 g of H2O (that is, the number of grams of K2SO4 that will dissolve in 100.0 g of H2O to form a saturated solution). The experimentaldata are: T/°C 09 08 20 40 9.8 14.2 18.3 21.6 25.9 a. On graph paper, plot the solubility (ordinate, or y-axis) versus the temperature (abscissa, or x-axis). Follow the points outlined in your Lab Manual on plotting data. Your plot must include labeled axes (showing necessary units), and a title (such as "Solubility of K2SO4 in Water as aFunction of Temperature"). Spread out your data (that is, “expand the axes") so that your plotcovers a large portion of the page of graph paper. Use your graph to answer the questions below. b. Determine the mass of K2SO4 that will dissolve in 250.0 g of H20 to form a saturatedsolution at 70.0 °C. c. Determine the temperature at which 67.5 g K2SO4 will dissolve in 450.0 g H20 to forma saturated solution. d. Determine the mass of K2SO4 that will crystallize when 500.0 g of a saturated solutionat 100.0 °C is cooled to form a saturated solution at 20.0 °C. e. Determine the mathematical equation that describes 'S' as a function of 'T'. Note: Information on graphing can be found in the introductory material for the lab manual.You must use quality graph paper ... “4 squares to 1 inch" grid paper is NOT graph paper!

What is the molar mass of unknown Z, .0578g and 1.12 x10 -3moles. 2$ 4 5 dele R Y F G H. K L

Nitroglycerine is a shock-sensitive compound that decomposes as follows:  2 C3H5N3O9(l)     -->     6 CO2(g)   +  3  N2(g)   +   ½ O2(g)   +   5 H2O(g) 10.0 kg of nitroglycerine sits in a 5.0-L cylinder.  A chemist, angry that an experiment didn’t work, foolishly kicks the cylinder, thereby inadvertently performing his last and most dramatic experiment.  The final temperature of the product mixture is 595 oC.  Assume ideal gas behavior and complete decomposition.  Calculate the total pressure (atm) in the cylinder the moment before the explosion.

3. Convert 5.0 Tbytes to Mbytes. 5tutesx 0.000001 mby- ts - 5.00 0no mbytes 1 चि je %3D 1 fera 15.0x10 1. Subtract 3.58 x 102 kg from 1.41 x 101 ng and report your answer in g.