Find the half life of radioactive iodine
Radioactive iodine , 131I which is frequently used in tracer studies involving the thyroid gland, decays according to N= N0 (0.5) t/8 , where N0 is the initial dose and t is the time in days. Find the half life of 131I .
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How much heat in kilojoules is evolved in converting 36.0 g steam at 180 degrees C. to ice at -60 degrees C. (heat capacity of steam is 1.184 J/g-c & ice is 2.09 J/g-c, the heat vaporization is 40.7 kj/mole and heat fusion is 6.02 kj/mole.)
How much ice in grams would have to melt to lower the temperature to 468 ml of water from 39 degrees C. to 2 degrees C. (Assume the density of water is 1.00 g/ml, the heat of fusion for water at 0 degrees C. is 6.02 kj/mole)
How would you prepare a liter of "carbonate buffer" at a pH of10.10? you are provided with H2CO3, NaHCO3, and Na2CO3.
A proton has an initial speed of 4.9 x 105 m/s. (a) What potential difference is required to bring the proton to rest?
Electrolysis of molten MgCl2 is the finalproduction step in the isolation of magnesium from seawater.Assuming that 37.8 g Mg metal forms, calculate the following.
An archer puts a 0.30-kg arrow to the bowstring. An average force of 201 N is exerted to draw the string back 1.3 m. Assuming that all the energy goes into the arrow, with what speed does the arrow leave the bow?
A solution of acetic acid,HC2H3O2, on a laboratory shelf wasof undetermined concentration. If the pH of the solution was found to be 2.81, what was the original concentration of the acetic acid?
a) What is the velocity of the block after it leaves the spring but before it gets to the incline? b) How far up the incline (along the hypotenuse of the triangle) does the block travel?
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Answers this question in first person narration, Long essay, simple words if I am planning to have a Career as a Social Worker to become a Probation Officer:
Please read and summarize the following article in point-form based upon the following criteria: - You should be able to state what the theme/idea/concept/theo
The living Faith Church Worldwide, also known as the Winners Chapel International, in America is on a mission to plant a Church in Puerto Rico.
Sexism continues to sustain the glass ceiling because it is embedded in social identity expectations and reinforced through implicit bias in decision-making
Blaine and Brenchley (2021) explain that gender stereotypes distort perceptions of competence and leadership fit, so women are more likely to be routed
Sexism sustains these challenges through entrenched social identity processes and gender role expectations. Social identity theory explains in group favoritism
Gender stereotypes remain deeply rooted in cultural expectations, and these assumptions often shape how individuals are perceived and evaluated