A patient has been experiencing ongoing pain and stiffness for several months after an injury, with limited functional activity. There are no signs of active inflammation, but the range of motion is still restricted due to scar tissue. What stage of tissue healing is this patient likely in?

Rank the following ionic solids in order of increasing melting points.  (WCSP24)

13. (3 points) Draw a 3D Lewis structure (use wedge and dash bonds) for CH2S.  Be sure to include any formal charges or lone pairs.  WCSP[x] a. (2 points) Determine the electron domain geometry about the carbon. __________________________ b. (2 points) Is CH2S polar? Explain in just a few words.     Enter the number of lone pair electrons in the box below.   

(WCSP24)  Select the intermolecular force(s) that are present in: LiNO3 in H2O

(WCSP24) When 5.0 g of CaCl2 is dissolved in 25 g of solution, the temperature of the solution increases by 25  ̊C.  Select all of the statements that are true of this process.  

12. The balanced combustion reaction for methane or natural gas, a fuel used in home heating, is shown below: CH4 (g)       +       2 O2 (g) 

8.  Write the balanced chemical reaction for limestone (CaCO3) reacting with acid rain (H2SO4).  Include the phases (s, l, g, aq). (WCSP[x], 4 points) Enter the coefficients for each reactant and product in the box below (no spaces)

14. A phase diagram for a substance with a molar mass of 60.1 g/mol is shown below. (WCSP[x]) a. (6 points) Sketch the heating curve for the substance going from -30 °C to 150 °C (point A to point B on the diagram above).  A template is given below. b. (6 points) Calculate the heat required to vaporize 30 g of the substance initially at room temperature (25 ºC). (WCSP[x]) ΔHfus 5.4 kJ/mol ΔHvap 45.1 kJ/mol Cs (solid) 2.45 J/g°C Cs (liquid) 2.26 J/g°C Cs (gas) 2.05 J/g°C Melting point -89.5 °C Boiling point 82.6 °C   Enter the value in the box below.   

6.  You have likely heard of the weed killer Round Up.  It is a solution of glyphosate in water.   To prepare a solution for application, you need to do a dilution of the concentrate so that the final concentration of glyphosate is 0.45 M (equivalent to a 5% glyphosate). Calculate the volume of 2.8 M Round Up concentrate needed to make 1 gallon (3.875 L) of 0.45 M weed killer for yard and garden application. (WCSP[x], 6 points) Enter the value in the box below.   

4.  (WCSP24.[x], 8 points) Cell phones use electromagnetic radiation with an energy of about 1.08 J/mol of photons.   Calculate the wavelength (in nm) and frequency that can be used to describe light with this energy. Enter the wavelength in nm below.