Multiple Choice
Suppose the half-life of some element is 2 days.If you purchase 10 grams of the element (which was produced in a laboratory 4 days ago) ,how much of this element would you have 3 days after you purchased it?
A) more than 2.5 grams but less than 5 grams
B) 2.5 grams
C) more than 1.25 grams but less than 2.5 grams
D) 1.25 grams
E) less than 1.25 grams
Correct Answer:
Verified
Correct Answer:
Verified
Q25: In a head-on collision,an alpha particle (Z
Q26: The material used in nuclear bombs is
Q27: A stable nucleus contains many protons very
Q28: Today,uranium contains 0.72% <sup>235</sup>U (half-life = 0.70
Q29: Stable nuclei have equal numbers of protons
Q31: Which of the following is not true
Q32: A positron (or antielectron)is made to stop
Q33: A radioactive nuclide of atomic number Z
Q34: A hospital patient has been given <sup>131</sup>I
Q35: What mass of <sup>14</sup>C (half-life = 5730