What percentage of this krypton remains after 50 years
What percentage of this Krypton remains after 50years? A nuclear power plant emits into the atmosphere a very small amount of 85 Krypton, a radioactive isotope with a half-life10.76 years.
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Estimate the properties of an aqueous solution of 1.21 x10-7 M sodium hydroxide and 1.35 x 10-4 M hydrochloric acid in the presence of 0.10 M sodium chloride.
If the photon emitted has a wave length of 434nm, what is the value of ni when an electron in the hydrogen atom makes a transition from an energy state of principal quantum numbers ni to the n=2state.
Suppose you have a random of 10 people who would have been labeled as near-retirees in 2008. What is the probability that during 2008:
Calculate the numbers of mL of o.255 M solution of H2SO4 is required to react with the 40.6 g of Fe (OH)3 according to the following unbalanced reaction:
The SAT Reasoning Test (formerly called the Scholastic Aptitude Test) is perhaps the most widely used standardized test for college admissions in the United States.
Determine the initial molar concentration of I- if the 3.0 mL of 0.30 M KI is mixed with 2.0 mL of deionized water, 1.0 mL buffer solution, 1.0 mL of 0.02 M Na2S2O3, and 3.0 mL ofH2O2.
For the most recent year available, the mean annual cost to attend the private university in the United States was $26,889. Suppose the distribution of annual costs follows the normal probability distribution and the standard deviation is $4,500.
The Cylinder of mass 20 lbs, radius 5in and height 10in is spinning about the axis of symmetry (central axis) at 200 rpms. Determine torque needed to stop it from spinning?
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