How long take radon sample to decay to original amount
After three days sample of radon-222 has decayed to 58% of its original amount. How long will it take sample to decay to 30% of its original amount?
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Solve given quadratic equation exactly using quadratic formula. Write solutions in simplest form. Using the calculator, find all irrational solutions to nearest thousandth.
The town had the population of 60,000 in 2000 and 70,000 in 2010. Determine the exponential function which will forecast the populations as the function of number of years since 2000.
Determine the heat evolved in freezing water at -10.°C, given that ΔH = -6004 J/mol at 273K for H2O(l) → H2O(s) and that CP,m(l) = 75.3 J/K⋅mol and CP,m(s) = 36.8J/K⋅mol.
Suppose you have a sample of a pure glyceraldehydes of the specific rotation [α] = -8.70. Can you determine from this experimental fact alone, and without consulting the literature, if this is (R) or (S)- glyceraldehydes?
Determine the specific rotation of an unknown if at a concentration of 2.00/10.0 ml. the observed rotation is.500 , using a 1.00 cm cell.
The pure optically active substance Z has a specific rotation of 1500. Determine the % optical purity (enantiomeric excess) of Z and what % Z and Z' does the sample contain?
Calculate the percentages of 35Cl and 37Cl in naturally occurring chlorine when the average atomic mass of chlorine is 35.453 amu.
The unknown was found to have a boiling point of 57C at 658 mm Hg. A liquid unknown was found to be in soluble in water and soluble in alcohol and cyclohexane; determine the substance?
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Provide 100-150 word response to following post: A traumatic event is a highly impactful experience that has caused terror and put the person in danger
I really appreciated the intentionality behind your question development, especially how your open-ended questions invited reflection on meaning, coping, and pe
"Growing up on the south side of Chicago, I remember the moment I first realized I was different from my peers vividly. It was during a school field trip
Problem: Engage in conversation with your peers about the potential harms and ramifications for failing to comply with the APA ethics codes.
How would you discuss your reactions to the assessment: What surprised you? What did you learn? And so on...
Cannabis use disorder is diagnosed in individuals with problematic marijuana use. Cannabis use often causes problems and issues for users.
Explain in detail a paragraph with simple terms: Social workers in this field must understand the importance of self-care, biases, boundaries, burnout