Name two different chemicals we have discussed or read about that we have added to the carbon cycle at levels that did not exist naturally.

a. Which functional group class does each chemical belong to? Explain.

b. How do the respective types of bonding and functional group classes of these molecules affect their reactivity?

c. What are the health and environmental effects of the two chemicals you choose to report on? Make sure to obtain your information from reliable sources such as your textbook and reference relevant sources.

d. Take one of the chemicals you choose to discuss and explain the properties of that chemical (such as water solubility, vapor pressure, etc.) that determines its migration in our environment. Search for the octanol/water solubility constant, provide that value and explain in a single sentence what this information tells us about that compound.

e. Name one green chemistry principle that could have the greatest potential to minimize the future impact of each of the two chemicals you discussed, explaining how each green chemistry principle can be applied specifically to each chemical.

1.) The following reaction was carried out in a 2.50L reaction vessel at 1100 K:

C(s)+H2O(g)?CO(g)+H2(g)

If during the course of the reaction, the vessel is found to contain 5.50mol of C, 15.8mol of H2O, 3.10mol of CO, and 8.20mol of H2, what is the reaction quotient Q?

2.) The reaction

2CH4(g)?C2H2(g)+3H2(g)

has an equilibrium constant of K = 0.154.

If 6.70mol of CH4, 4.40mol of C2H2, and 10.90mol of H2 are added to a reaction vessel with a volume of 5.90L , what net reaction will occur?

Options for #2:

a.) The reaction will proceed to the left to establish equilibrium.

b.)The reaction will proceed to the right to establish equilibrium.

c.) No further reaction will occur because the reaction is at equilibrium.

(a) The interhalogen molecule bromine monofluoride, BrF, has a bond length of 176 pm and a dipole moment of 1.42 D. Calculate the absolute electrical charge (in coulombs) on either end of the dipole.

(b) Calculate the fraction of an electron’s charge on either end of the dipole and determine the % ionic character of the Br-F bond.

A 215 g block of copper at 505.0°C is plunged into 1.000 kg of water (T = 23.4 °C) in an insulated container. What will be the final equilibrium T in °C of the water and the Cu? (sCu = 0.385 J g-1 °C-1)

Your boss wants you to make some buffers using the acetic acid / acetate buffering system. You find 0.100 M stock solutions of Na acetate and acetic acid on the shelf. Use your resources to find the pKa for this system and calculate hte amount in mL of each you would have to use to make 500 mL of the following buffer

Desirec pH : 4.00

mL Na acetate _____

mL acetic acid _____

please show work

The normal freezing point of water (H₂O) is 0.00 °C and its K_fp value is 1.86 °C/m. A nonvolatile, nonelectrolyte that dissolves in water is sucrose .

How many grams of sucrose, C₁₂H₂₂O₁₁ (342.3 g/mol), must be dissolved in 233.0 grams of water to reduce the freezing point by 0.350 °C?

The electric usage of LED is 8 watts and incandescent bulbs take up 40 watts. The lifetime of LED bulbs is 25 000 hours and the lifetime for incandescent bulb is 2500 hours. How much energy could be saved each year by replacing incandescent bulbs with LED bulbs? Assume that six 40-watt lamps arer lit an average of three hours a night and they are each replaces with 8 watt LED-bulbs.

- The cube length is 3.23 cm. What is the volume of the cube? _ ml

- How many significant figures should be in the calculated volume?

- The measured mass of the cube is 43.808 g. Using that number combined with whatever the volume is, determine the cube's density (in g/mL) ?

- Based on the density that was calculated, which type of plastic was used to make the cube?

Low Density Polyethylene, High Density Polethylene, Nylon, Polystyrene, PVC, Plexiglas?

An unknown compound has a formula of CxHyOz. You burn .1523g of the compound and isolate .3718g of CO2 and .1522 g of H2O. What is the empirical formula of the compound? if the molar mass is 72.1 g/mol, what is the molecular formula?

A mixture of 0.750 mol H₂ and 0.750 mol I₂ was placed in a 1.00 L flask at 430°C. The equilibrium constant K_c for the reaction is 54.3 at this temperature. Calculate the concentration of H₂, I₂, and HI at equilibrium.

                                    H₂        + I₂           ⇌         2 HI

From an initial mix of: 2 mol Cl2, 1 mol Br2, 1 mol I2, 1 mol Cl−, 1 mol Br−, & 5 mol I−; the total quantity of Br2  present after all possible reactions occur is

give the steps for the enantioselective synthesis of

(L)-tyrosine

and another for (D)-tyrosine

both starting from the corresponding (Z)-enamido acid and using a rhodium as a catalyst

Determine the percent ionization of the following solutions of phenol at 25°C:

(a) 0.795 M

_____%

(b) 0.280 M

_____%

(c) 1.57×10⁻⁶M

_____×10_____%

(Enter your answer in scientific notation.)