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The half life for radioactive decay (a first-order process) of plutonium-239 is 24,000 years. How many years would it take for one mole of this radioactive material to decay so that just one atom remains.
What is ozone and how it works as a protective molecule for our environment? What are the effects of CFCs on the ozone layer.
Determine the change in entropy for the following reaction: SO3(g) + H2O(liquid) = H2SO4(liquid) Given:The following values of Standard Entropy at 25 deg C: SO3 = 256.2 Joules/K mol H2O = 69.9 Joules/K mol H2SO4 = 156.9 Joules/K mol
at 350 degrees celcius and 200 atm the % yield is 50%. Calculate how many grams of N gas are required to produce 25.000g Ammonia
Let's say you drive a car 1000 miles and you average 16.2 miles per gallon of gasoline assuming composition of gas is C8H18 what mass of carbon dioxide is produced as well as the density of gasoline is 0.8205 g/mL as well as there is 946 mL in a q..
A solution of 2-methyl-1-butanol has a specific rotation of +1.151. What is the ratio of R:S in the sample mixture? [α] =+/- 5.756
A very long insulating cylindrical shell of radius 6.70cm carries charge of linear density 8.60Nc spread uniformly over its outer surface
Explain when pentane, C.5H.12, burns in oxygen, it produces carbon dioxide as well as water. If 85.5g of pentane is completely burned, what volume of carbon dioxide is produced? Assume the CO.2 cools to room temperature where its density is 1.997g/..
Consider a situation in which 211g of P4 are exposed to 240g of O2. What is the maximum amount of P2O5 that can theoretically be made from 211g of P4 and excess oxygen?
Two carbon rods are placed in a solution of H2SO4. A current of 12A is passed between the two rods for 2h 14min.
10 g of methane (CH4) is combusted in a calorimeter that has an empty heat capacity of 18 J/°C. The calorimeter contained 150 g of water.
The titration involves the formation of a stable, neutral complex: Hg2+ (aq) + 2 SCN- (aq) = Hg(SCN)2 (aq) A)How many mmoles of mercury are in the sample
How many kilojoules of heat are required to melt a 10.0-g popsicle at 0 C? Assume the popsicle has the same molar mass and heat of fusion as water.
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