In an experiment measuring the efficacy of bioremediation for a toxic organic pollutant, the following data was obtained. Use the data (below) to answer the following questions.

Time (days) Concentration (mg/L)
0 66.99
0.5 43.59
1 24.67
2 9.333
3 3.523
5 0.447
12 6.667 x 10^-4

What is reaction rate constant for the process?

a. 0.96 hr-1
b. 0.48 hr-1
c. 0.10 hr-1
d. 0.04 hr-1
e. 1 hr-1

Given the rate obtained in above question, how much time is required to achieve log 3 transformation (removal) of the organic pollutant?

a. 7.17 days
b. 0.768 days
c. 27.4 days
d. 172.2 days
e. 1.14 days

What four properties do all waves have in common

Electromagnets coils of wire paper clips picked up 10 3 15 6 20 9 25 12 ms. owens' class was studying magnets. ms. owens showed her students how to make an electromagnet using a nail, a d-cell battery, and plastic coated wire. the students wrapped the wire around the nail and then attached the ends to the battery. when they were finished, they tested their magnets by investigating how many paperclips their magnets could pick up. they also tested whether they could increase the strength of their electromagnets by using more coils of wire. they recorded the class average of their results in the data table seen here. ms. owens asked her students to graph their data in a line graph. how should the students label the x-axis on their line graph? a) size of battery b) number of paper clips c) number of coils of wire d) strength of electromagnet

The vapor pressure of ethanol is 1.00 × 102 mmhg at 34.90°c. what is its vapor pressure at 61.61°c? (δhvap for ethanol is 39.3 kj/mol.)