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Problem- Iodine-131 is a radioactive isotope. After 4.00 days, 70.8% of a sample of I-131 remains. What is the half life of I-131?
Express your answers in detail and I want you to explain the chemistry in this problem
a researcher plans to compare two treatment conditions by measuring one sample in treatment 1 and a second sample in
increased the space between the energy levels keeping the temperature fixed or (ii) increased the temperature and keeping the energy levels fixed.
For a solution containing at least one of the cations involved in this experiment, answer the following questions. (1) When 6M HCL is added to the solution, a white precipitate forms. What cation(s) be present in the solution
When glucose, C6H12O6, is oxidized in our bodies energy is produced. In addition,CO2, is produced as a gas. The carbon dioxide gas eventualy finds its way from the cells to the lungs where it is expelled from the body
What is the minimum quantity of atmospheric oxygen required to completely convert 0.30 moles of propan-1-ol into carbon dioxide and water
Problem- What is the formula and charge of the ion(s) responsible for the solution being acidic or basic? Type your answer using the format Na1+ for Na1+ or SO42- for SO42-.
To 1.00 L of a 0.100 M aquoeus solution of the weak base pyridine C5H5N is added 1.00 ml of 14.0 M NaOH. What fraction of the pyridine molecules in the resulting solution react with water to release hydroxide ions? (Kb C5H5N = 1.7 x 10^-9)
How many grams of magnesium fluoride (MgF2) must be added to 67.3 g of water to prepare a 4.81% (m/m) solution of magnesium fluoride
What volumes of .200 M HCOOH and 2.00 M NaOH would make 300 mL of a buffer with the pH of one made from 475 mL of .200 M benzoic acid and 25 mL of 2.00 M NaOH?
What you need to know about Problems, The Ksp of La(IO3)3 is 1.0×10-11. Using activities, what is the molar solubility of La(IO3)3 in a 0.050 M solution of NaNO3?
A gas sample was collected over water at 25.3 degrees Celsius, The total pressure is determined to be 0.97 atm. What is the partial pressure of the gas that was collected?
If Prozac was treated with bromine and was brominated once what would be the most likely produc
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