🧪 TheChemSolverUSNCO / General Chemistry
KineticsMCQ

A substance decomposes in a first-order reaction with a rate constant of 6.70 × 10–4 s–1. If the iniKinetics Chemistry Question

Question

A substance decomposes in a first-order reaction with a rate constant of 6.70 × 10–4 s–1. If the initial concentration of the substance is 1.50 M, what is its concentration after 500. s?

A.

1.07 M

✓ Correct
B.

0.503 M

C.

0.335 M

D.

0.128 M

💬
Still have doubts about this question?
Practice more questions like this, completely free.

Practice USNCO / General Chemistry questions like this — free

4,000+ questions across AP Chemistry, USNCO, and IChO — all free, no signup required.