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A small amount of krypton-85 is emitted into the atmosphere. The half-life of krypton-85 is 10.76 years. What fraction remains after 25 years?
Determine the number of grams of O2 consumed.
Consider an insulated system containing 150 g of liquid water and 150 g of ice at equilibrium under atmospheric pressure. A total of 22 g of steam at 120±C is admitted to the system.
How do the two graphs compare if the frequency factor of the second reaction is higher than the frequency factor of the first reaction but the two reactions have the same activation energy?
Determine how many significant figures are there in the Fahrenheit result when 7.02C converted to Fahrenheit scale,?
A young child grows rapidly, with high levels of cell division and high energy requirements. If you were planning the child's diet, which food groups would you emphasize, and why? Which good groups would you deemphasize, and why?
The purity of a 0.287 -g samole of Zn(OH)2 is determined by titrating with a standard solution, requiring 37.8 mL. The HCL solution was standardized by precipitating AgCl in a 25.0-mL aliquot
Consider the neutralization reaction that takes place when phosphoric acid reacts with aqueous potassium hydroxide
Nitrosyl bromide, NOBr, is 34 percent dissociated at 25 deg. C and the total pressure is 0.25 atm.
Im really confused about spectroscopy and need an introduction on what it is and what these types of problems mean.
Compute KP at this temperature If the pH of an aqueous solution is 8.23, what are the hydrogen- and hydroxide-ion concentrations of this solution?
What is the total mass of AlCl3 in this sample? b. How many moles of AlCl3 are in this sample?
If, in a certain experiment, over a specific time period, 0.0033 mol PH3 is consumed in a 1.5-L container each second of reaction, what are the rates of production of P4 and H2 in this experiment?
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