In the first-order, reaction A products, [A] = 0.400 M initially ...

[CBme]

Question 1

In the first order reaction A → products, [A] = 0.400 M initially and 0.250 M after 15.0 min, what will [A] be after 175 min?
◦ 1.67 × 10^-3 M
◦ 1.04 × 10^-3 M
◦ 3.70 × 10^-2 M
◦ 6.024 × 10^-3 M
◦ 2.31 × 10^-1 M

Question 2

In the first-order, reaction A → products, [A] = 0.400 M initially and 0.250 M after 15.0 min, what is the value of the rate constant, k?
◦ 3.06 min^-1
◦ 0.0136 min^-1
◦ 0.470 min^-1
◦ 7.05 min^-1
◦ 0.0313 min^-1

[bblaney]

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[CBme]

Excellent

[mammy1697]

Thanks for the timely response, appreciate it