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The decomposition of carbon disulfide, CS2 to form carbon monosulfide, CS and sulfur is first order with k = 2.8 x 10^-7 / second at 1000 degrees C. CS2 => CS + S determine how many days would be needed before a 1.00 gram sample of CS2 had decomposed to the extent that only 0.60 grams of CS2 remained.
a. 3 days
b. 18 days
c. 21 days
d. 27 days
e. 33.3 days
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