A radioactive sample is measured to contain 1000 mCi of radioactivity.If the decay constant of this isotope is 0.105 hr-1,how much activity will remain after 48 hours?
A) 6.474 mCi
B) 7.368 mCi
C) 0.154 mCi
D) 15.445 mCi
Correct Answer:
Verified
Q4: Wavelength is represented by:
A) Lambda
B) Hertz
C) inch
D)
Q5: The number of protons and neutrons in
Q6: An electron's binding energy is the amount
Q7: Who proposed the first model of the
Q8: One Curie (1Ci)equals:
A) 3.8 x 108 dis/sec
B)
Q10: Which statement is not true?
A) The nucleus
Q11: The speed of light is:
A) 3 x
Q12: The metric system,or SI,unit of energy is:
A)
Q13: A mCi (millicurie)equals:
A) 103 Ci
B) 10-3 Ci
C)
Q14: The thickness of some added material required
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