[sam2]

    The decomposition of carbon disulfide, CS2, to carbon monosulfide, CS, and sulfur is first order with k = 2.8 x 10-7 s-1 at 1000oC.
    CS2 CS + S
    What is the half-life of this reaction at 1000oC?
    (a) 5.0 x 107 s
    (b) 4.7 x 10-6 s
    (c) 3.8 x 105 s
    (d) 6.1 x 104 s
    (e) 2.5 x 106 s

Pls explain

[sjb]

    The decomposition of carbon disulfide, CS₂, to carbon monosulfide, CS, and sulfur is first order with k = 2.8 x 10^-7 s^-1 at 1000°C.
    CS2  CS + S
    What is the half-life of this reaction at 1000°C?

• 5.0 x 10⁷ s
• 4.7 x 10^-6 s
• 3.8 x 10⁵ s
• 6.1 x 10⁴ s
• 2.5 x 10⁶ s

Pls explain

What are your thoughts? Any equations you know that may help?

https://duckduckgo.com/?q=half+life+of+a+first+order+reaction ?

[Adenosine TriBossphate]

Give this a read through:
http://www.chem.purdue.edu/gchelp/howtosolveit/Kinetics/Halflife.html

Perhaps it could give you some insight.