grams of gasoline to raise CO by 1000 ppm at STP??
Assume that an incorrectly adjusted lawn mower is operated in a garage such that the combustion reaction in the engine is: C8H18 + (17/2)O2 -> 8CO + 9H2O If the dimensions of the garage are 3.0 by 5.0 by 5.0 meters, how many grams of gasoline must be burned to raise the level of CO in the air to 1000 ppm by volume at STP? H ...continues
Nernst applic: atm pressure? given pH, Fe3+=Fe2+?
What is the calculated value of the partial pressure(atm) of O2 in acid mine water of pH 1.700, in which [Fe3+] = [Fe2+]? It seemed simple enough...I looked at other examples but couldn't find one on lead having equal concentrations.
mass of carbon needed to increase average CO2 by 170 ppm
Taking the mass of the atmosphere to be 4.3E15 metric tons, what mass of carbon must be burned in order to increase the average carbon dioxide level in the atmosphere by 170ppm by volume (in metric tons)? I only have one try left on the computer!!! I downloaded a couple of study guide examples but the were wrong. Please h ...continues
The average home has a 200 liter (50-60 gallon) hot-water tank, which is effectively drained and replenished three times per day. Assume that the entering tap water is 19 degrees C and is heated to 51 degrees C. Given an average energy from sunlight of 1.53 kJ/cm2 per day, how large would the collection area (in m2) of a solar w ...continues
given concentrations in molec/cm3 and ppm, calculate rate of reaction given rate constant
For the concentration of hydroxyl radical of 7.5E06 molecules/cm3 and a carbon monoxide concentration of 18 ppm, calculate the rate of its reaction with atmospheric carbon monoxide at 11 degrees C, given that the rate constant for the process is 5E-13 E-300/T molecule-1 cm3 sec-1. Hint: Convert the rate constant to a numerica ...continues
NTA fraction, given pH and HCO3 concentr
What is the fraction of NTA present after HT2- has been brought to equilibrium with solid PbCO3 at pH 7.00, in a medium in which [HCO3-] = 1.00E-3 M? Hint: Use the equilibrium constant expression to solve this problem. I used a couple of study guides but could not get the right answers..please help, thanx!
CH20 waste given mg/L, processed through sewage treatment, calculate volume for conversion
Assume that a waste contains 395.0 mg/L of biodegradable CH2O and is processed through a 190000.0 L/day sewage treatment plant which converts 40% of the waste to CO2 and H2O. Calculate the volume(L) of air (at 25 degrees, 1 atm) required for this conversion. Assume that the O2 is transferred to the water with 20% efficiency. ...continues
metric tons needed to yield H2SO4 required to produce specific rainfall amt?
How many metric tons of 5%-S coal would be needed to yield the H2SO4 required to produce a 4.0-cm rainfall of pH 2.00 over an area of 100 square kilometers? Hint: Calculate vol rain, mol H+, mass of S, mass of coal
photosynthesis produces plant matter(need carbon "fixed" amt), total moles of glucose produced?, %solar energy converted to chemical energy? a) Photosynthesis is estimated to produce 330.0 g (dry weight) of plant matter per square meter, 50% of which is carbon. Calculate the total number of grams of carbon "fixed" each year b ...continues
rate of rxn given concentrations and rate constant
For the concentration of hydroxyl radical of 7.5E06 molecules/cm3 and a carbon monoxide concentration of 18 ppm, calculate the rate of its reaction with atmospheric carbon monoxide at 11 degrees C, given that the rate constant for the process is 5E-13 E-300/T molecule-1 cm3 sec-1. Hint: Convert the rate constant to a numerica ...continues
