Chapter 1, Problem 3RP

Robert Tisserand states that if essential oils are properly diluted, they should be safe to use: Choose one answer. a. once/month b. once/week c. twice/week d. every day

Given the following common laboratory materials, which of the three methods of heat sterilization do you think is the most appropriate and practical to use in sterilizing them ? Why do you think so ? a) empty flask b)L-rod (glass rod c)10 ml glass pipet d) wire needles e)antibiotic solution

What is the best method to filter the precipitate from it's reaction mixture? a Gravity filtering is accomplished by folding the filter paper into a cone and placing it in a long stem funnel. b Vacuum filtering using a Buchner funnel with filter paper. c Using a filtering crucible that can be dried and ignited at red heat. d All of the above, just depends on the precipitate.