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In a diagnostic test for leukemia, a person receives 3.8 mL of a solution containing selenium-75. If the activity of the selenium-75 is 43 μCi/mL, what dose, in microcuries, does the patient receive?
the energy levels the electron can occupy in the h atom can be calculated using the energy level equation. calculate
The mass of the ice cube is 14.6 g, and its initial temperature is -13.1 °C. The water resulting from the melted ice reaches the temperature of your skin, 30.7 °C. How much heat is absorbed by the ice cube and resulting water
the rate constant of some reactions double with every 10 degree rise in temperature. assume that a reaction takes place
Question- Calculate the pH of 1.0L solution containing 0.1M NaF and 0.5 M HF when 9.5mL of 2.0M NaOH is added
The initial temperature of the HCl and Ba(OH)2 solutions is the same at 20.48°C. For the process H+(aq) + OH-(aq) H2O(l), the heat of neutralization is -56.2 kJ/mol. What is the final temperature of the mixed solution?
sodium oxide were obtained from a reaction of 4.598 g of sodium metal with excess oxygen gas what is the % yield of sodium oxide?
calculate the potential of a platinum electrode immersed in a solution that is prepared by mixing 25 ml of 0.0832 M V2(SO4)3
What is the structure/composition of the material? What interactions with the environment are important for this material's function? Its safety?
What are the molality and mole fraction of solute in a 34.0 percent by mass aqueous solution of formic acid (CH3OH)?
the reduction table in your notes, calculate the standard cell potential for the following reaction. F2(g) + 2 Cl-(aq) 2 F-(aq) + Cl2(g)
a solution contains 100.0 g of water and 15.0 g of alcohol. what is the percent alcohol in the solution? my teacher got
How many moles of H3O+ must be added to one liter of a solution to adjust the pH from 8.54 to 5.58? Use E notation and 3 significant figures.
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