00:01
Hi, so to solve for this, we know that this is a first order reaction, so we will use the formula for first order reaction.
00:11
Y is equivalent to y0, y is the remaining amount, y0 is the initial amount, multiplied by e raised to the power of negative k, the rate constant, and t in the time elapsed.
00:21
So our unknown here is t.
00:23
Let's solve first for the remaining amount.
00:28
We have 52 .7 % of a to be reacted, so that means the remaining amount will be equivalent to 100 % minus 52 .7%.
00:38
This is 47 .3 % remaining.
00:43
So for the remaining amount, we can write it in decimal form, 0 .73 of the initial amount multiplied by the initial amount, since we don't know the initial amount, so we're just going to write y0.
00:57
Then the rate constant is 0 .1370 per second multiplied by t, our unknown...