kinetics

Chemistry, General Chemistry Year 1 kinetics problem -------------------------------------------------------------------------------- The problem states In the reaction 2 A + 2 B -------arrow C + 3 D the rate of disappearance of A is -2.2 X 10^-4 M s -1. What is the rate of formation of C and the answer states is A = to 1.1 x 10^-4 M/s What happened to the negative 1 in this situation.???? These measurements for rates M s^-1 and s-1 can these be used to help identify first second and third order??? Your original response, was that there is no quick way to recognize the order of a reaction. It is experimentally derived. For example, take a look at these examples: 3... click for more

Automobile fuel economy in the US. Calculate fuel consumption savings

Petroleum consumption in the US in 1990 supplied about 35.9E15 kJ of energy. Of this quantity, about 15.3E15 kJ was supplied by foreign sources. The transportation sector is the major user of petroleum, accounting for 23.2E15 kJ of consumption. Overall automobile fuel economy in the US was about 20 miles per gallon in 1990. Automobile efficiencies in Europe and Japan were about 26 mpg. If the US had averaged 26 mpg in 1990, how much less petroleum (expressed as kJ) would have been imported?

Calculating energy and cost for solar heater

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 16 degrees C and is heated to 56 degrees C. Given an average energy from sunlight of 1.53 kJ/cm^2 per day, how large would the collection area (in m^2) of a solar water heater need to be if its efficiency is 29%? Assume that the price of a solar collector is $370/m^2. How much would it cost to install this hot water system?

Conversions of oxygen radicals from ppmv

During a photochemical smog episode in a coastal city, the steady-state concentration of oxygen radicals at ground level was measured to be 0.09 ppmv at 25 degrees celsius. Convert this value to: a. partial pressure in atm b. the molarity scale c. the molecules per cm-3 scale

Volume of sulfuric acid produced from coal

One metric ton (1000 kg) of coal is required to produce 7.3 MW-hr of electrical energy. In 1993, the Thomas Hill power plant (a small, coal-fired plant supplying rural electric cooperatives) produced 5900000.0 MW-hr. If low sulfur (1%) coal were used, and the gaseous effluent were the only means of discharging the sulfur, what volume of sulfuric acid (1.84 g/mL) would be produced in that year after the resulting sulfur dioxide reacted with atmospheric oxygen and water vapor (in liters)?