A certain substance, initially present at 0.950 M, decomposes by first-order kinetics with a rate constant of 1.25 × 102 mol L 's'!. Calculate the time (in seconds) required for the system to reach a concentration of 0.555M. seconds Submit Hide Hints Hint 1 Hint 2 The integrated rate law for this reaction is (A)- kt + (Alo OMA) - k+ MA O la[A] -kt + In[A]o OMA)- kt+ MA

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CHEMWORK
A certain substance, initially present at 0.950 M, decomposes by first-order kinetics with a rate constant of 1.25 × 102 mol L-'s"! Calculate the time (in seconds) required for the system to
reach a concentration of 0.555M.
seconds
Submit
Hide Hints
Hint 1 Hint 2
pt
The integrated rate law for this reaction is
1 pt
• (A] - -kt + [A]o
1 pt
O lax([A][A],) = -kt
O MA] = kt + 1/[A]o
O 1pt
O In[A] - kt + In[Alo
O pt
O MA) = -kt + 1/[Alo
O 1 pt
Check int
1st Attempt
1 pt
O 1 pt
Feedback
15
1 pt
n 16
1 pt
Submit Answer
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Transcribed Image Text:[References) CHEMWORK A certain substance, initially present at 0.950 M, decomposes by first-order kinetics with a rate constant of 1.25 × 102 mol L-'s"! Calculate the time (in seconds) required for the system to reach a concentration of 0.555M. seconds Submit Hide Hints Hint 1 Hint 2 pt The integrated rate law for this reaction is 1 pt • (A] - -kt + [A]o 1 pt O lax([A][A],) = -kt O MA] = kt + 1/[A]o O 1pt O In[A] - kt + In[Alo O pt O MA) = -kt + 1/[Alo O 1 pt Check int 1st Attempt 1 pt O 1 pt Feedback 15 1 pt n 16 1 pt Submit Answer Try Another Version 10 item attempts remaining ress Items Previous ish Asnigment Save and Exit 416 PM 2/26/2021 %23 2 + back ER s/DFG xcv B T C pause t shift alt ctrl
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