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Question: Half-life a breeder reactor converts uranium-238 into an isotope of plutonium-239 at a rate proportional to the amount present at any time. After 10 years, 0.03% of the radioactivity has dissipated (that is, 0.9997 of the initial amount remains). Suppose that initially there is 100 pounds of this substance. Find the half-life.
calculate the average moles of ascobic acid in the pipetted sample used for titration d)Calculate the average moles of ascobic acid in the crushed tablet.
Mendeleev is considered the father of the periodic table. He was so advanced that he left space for elements not discovered. Explain Mendeleev's logic in leaving blank spaces then describe how the modern periodic table came to be. (YOUR ANSWER MUST B..
What gas was produced by the reaction of zinc and hydrochloric acid? How did this gas behave in the presence of fire?
when relatively small amounts of magnesium burn the fires are extinguished using commercially available dry powder. why
For the reaction PCl5 ->
which reaction has the greatest increase in entropya. 2h2o-gt 2h2 o2b. 2h2o-gt 2h2 o2c. h2og-gt h2old. h2ol-gt
How high must a waterfall be for the water temperature to be 1.0 K warmer at the bottom than at the top?
Carbon is a fascinating element that is capable of forming four covalent bonds.
Why does one electron in a potassium atom go into the fourth energy level instead of squeezing into the third energy level along with the eight already there
Problem- Calculate the pH for the titration of 35.0 mL of 0.100 M KOH with 0.100 M HBr after adding each of the following amounts of HBr: 0, 5.0, 30.0, 35.0, 40.0 mL.
What is the boiling point of the water in your radiator if 2.00 kg of antifreeze (ethylene glycol, C2H6O2) is added to 9.00 x 10^3 grams of water
the resulting solution exerts an osmotic pressure of 829 torr. what is the molar concentration of the solution? how many moles of solute are in the solution? what is the molar mass of the solute?
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