The conversion of solid wastes to innocuous gases can be accomplished in incinerators in an environmentally acceptable fashion. However, the hot exhaust gases often must be cooled or diluted with air. An economic feasibility study indicates that solid municipal waste can be burned to a gas of 9.2% CO2, 1.5% CO, 6.5%O2, 78% N2 and rest water on a molar basis. You can neglect any energy effects resulting from the mixing of gaseous components. What is the enthalpy difference if 300 m^3/h of the stack at 290C is cooled to 30C?

Find the pH of a 0.150M solution of a weak monoprotic acid having Ka= 0.20.

Calculate the entropy change when a He atom in the gas phase expands from V1 to 2V1 at constant temperature.

A) 5.8 kJ/K

B) 9.6 x 10-24 kJ/K

C) -5.8 kJ/K

D) 0 kJ/K

E) not enough information

Describe the effects of adding Mn to steel and give a use for manganese-steel alloys.

A sample of 25.00 ml of 0.1007 M acetic acid (HC2H2o2 was titrated with 0.1004 M NAOH what is the pH of the sample at the equicalence point of the titration? The Ka for accetic acid is 1.8 x 10^-5

Please explain in detail the chemistry of how breathing works such as the oxygen binding to hemoglobin

a) effects of elevation on bodies ability to breathe

b) please show chemical formulas and lewis structures involved in these systems

The vapor pressure of liquid diethyl ether, C₂H₅OC₂H₅, is 100 mm Hg at 262 K. A 0.167 g sample of liquid C₂H₅OC₂H₅ is placed in a closed, evacuated 300. mL container at a temperature of 262 K.

Calculate what the ideal gas pressure would be in the container if all of the liquid diethyl ether evaporated.  mm Hg

Assuming that the temperature remains constant, will all of the liquid evaporate? _____ yes or no

What will the pressure in the container be when equilibrium is reached?  mm Hg

Draw the structures of all monobromo derivatives of pentane, C₅H₁₁Br, which contain a 4-carbon chain

Draw the structure of an alkane that has 7 carbons and 2 tertiary carbons..

Consider the following scenario:

You come across a "new" nutritional supplement that proclaims it to be a rich source of the same antioxidants commonly found in carrots, tomatoes and various peppers. You examine the product and note its appearance: a dark brown color might simply be from some type of syntehetic food dye. Since you have recently examined some of the antioxidants found in paprika in your organic lab, you decide to play "detective." So, show off your detective skills!

Outline a strategy for a simple experiment that will help you determine whether the manufactureer's claims are true or false.

RATE = ([ Na2S2O3]/time) = k [I-]a [BrO3-]b [HCl]c
1A) You mix together in the proper manner the following:
10.0 mL of .0100 M Potassium Iodide
10.0 mL of .00100 M Sodium thiosulfate
10.0 mL of water
10.0 mL of .0400 M Potassium Bromate
10.0 mL of .100 M HCl
The time to turn blue is... 53 sec
1B) You also mix together in the proper manner the following:
10.0 mL of .0100 M Potassium Iodide
10.0 mL of .00100 M Sodium thiosulfate
10.0 mL of .0400 M Potassium Bromate
20.0 mL of .100 M HCl
The time to turn blue is... 14 sec
Calculate:
The Experimental value of exponent c..._______________ (a)

2) If the exponents a, b, and c have the values:
a = 1; b = 0; c = 2
CALCULATE:
Rate constant k for data in 1A...______________ (b)

3) You mix together in the proper manner the following VOLUMES:
0.0100 M Potassium iodide...14.7 mL
0.0010 M Sodium thiosulfate...5.6 mL
Distilled water...22.7 mL
0.0400 M Potassium Bromate...11.7 mL
0.100 M Hydrochloric acid...5.6 mL
Using the rate constant and rate equation from problem 2),

CALCULATE the time to turn blue...__________________ sec (c)

4) A plot of log Rate vs 1/T gives a best straight line which goes through....
   1/T = 0.00300, log rate = -4.46
and 1/T = 0.00352, log rate = -6.00.
CALCULATE:
The Slope of the line..._____________ (d)

The Activation Energy (Ea) (Kj/mol)...________________(e)

A. NH3 is a weak base (Kb = 1.8 × 10–5) and so the salt NH4Cl acts as a weak acid. What is the pH of a solution that is         0.030M in NH4Cl at 25 °C?

B. HClO is a weak acid (Ka = 4.0 × 10–8) and so the salt NaClO acts as a weak base. What is the pH of a solution that is 0.045 M in NaClO at 25 °C?

Calculate the theoretical pH of the resulting solution when 0.25 mL of 0.100 M NaOH is added to 2.00 mL of an acetic acid/sodium acetate buffer (Ch3COOH/CH3CooNa - 1 ml of 0.1 M acetic acid and 1 ml of 0.10 M sodium acetate). Enter your answer in the box and show your work below. (pKa of CH3COOH = 4.74)

How many mL pf 1.07 M HClO4 should be added to 1.00 g of imidazole (C3H4N2; MW= 68.077 g/mol), a weak organic base (pKb= 6.95), to give a pH of 7.993?

A balloon filled with 39.1 moles of helium gas has a volume of 876 L at 0.0°C and 1.00 atm pressure. At constant pressure, the temperature of the balloon is increased to 38.0°C causing the balloon to expand. Calculate q, w, ∆E for the helium in the balloon. The specific heat of helium gas is 5.20 J/(g °C) and 101.3 J = 1 Latm.