Chemistry: Avial containing radioactive selenium-75 has an activity of 3.0 mci/ml. if 2.6 mci are required for a leukemia test, how many microliters must be administered? a vial containing radioactive selenium-75 has an activity of 3.0 mci/ml. if 2.6 mci are required for a leukemia test, how many microliters must be administered?

Avial containing radioactive selenium-75 has an

obastwin2

17.01.2022

Answer : The $866.66\mu L$ must be administered.

Solution :

As we are given that a vial containing radioactive selenium-75 has an activity of 3.0mCi/mL .

As, 3.0 mCi radioactive selenium-75 present in 1 ml

So, 2.6 mCi radioactive selenium-75 present in $\frac{2.6mCi}{3.0mCi}\times 1ml=0.86666ml\times 1000=866.66\mu L$

Conversion :

$(1ml=1000\mu L)$

Therefore, the $866.66\mu L$ must be administered.

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Taylor1402

20.01.2022

54 m^2

Step-by-step explanation:

To find the area of a triangle use the formula a = 1/2bh

The altitude is the same as height so we can substitute 12 for h and 9 for b

Now the equation will become

a = 1/2 · 9 · 12

When you multiply it, it become 108/2 = a simplified to a = 54

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