Examlex
The half-life of As-81 is 33 seconds. If only 12.5 g of a 100.0 g sample of As-81 is left, how long did it take for the original sample to decay to its current mass?
Contrabands
Refers to goods that are illegal to import or export.
Fort Monroe
A historic military installation in Hampton, Virginia, that played a significant role in the Civil War and served as a stronghold for the Union Army.
Benjamin Butler
A controversial Union general during the American Civil War, known for his administration in occupied New Orleans and for his policies regarding runaway slaves.
Slave Labor
The coerced, unpaid work forced upon enslaved people, critical to economies of slave-holding societies.
Q58: A train travels 45 feet in 1/10
Q59: 11.89 + 0.072 =<br>A)12.61<br>B)11.962<br>C)11.0161<br>D)101.0892
Q82: Select the word or phrase that will
Q96: 5 <sup>1</sup>/<sub>3</sub> ÷ 2 <sup>1</sup>/<sub>5</sub> =<br>A)2 <sup>14</sup>/<sub>33</sub><br>B)1
Q107: The third month of the year is<br>A)March<br>B)November<br>C)May<br>D)February
Q171: The sixth month of the year is<br>A)May<br>B)June<br>C)August<br>D)July
Q194: A scientist believes that there are 953
Q212: How many of the five pairs of
Q245: In the following set of words, which
Q247: Select the word that means "to put