Which of the following is a correct practice in handling reagents?A Return any excess reagent to its source container.B Clean up any spills after finishing the laboratory work© Never insert spatulas, spoons, or knives into a bottle containing solid chemicalsD Dispose any liquid chemicals in the sink Francis A. SantosA chemist obtained the following data for the percent compound Z in triplicates (n=3) of an insecticide preparation: 7.47, 6.98, and7.27. Calculate the 90% confidence limit for the mean of the data assuming that only information about the precision of the methodis the precision for the three data points.A 7.24 + 0.74%B) 7.24 + 0.27%7.24 + 0.13%7.24 + 0.42%

Since you have posted multiple questions, we are entitled to answer the first only. 1) The options…

Which of the following is a correct practice in handling reagents? A Return any excess reagent to its source container. B Clean up any spills after finishing the laboratory work Never insert spatulas, spoons, or knives into a bottle containing solid chemicals D Dispose any liquid chemicals in the sink

Which of the following is a correct practice in handling reagents? A Return any excess reagent to its source container. B Clean up any spills after finishing the laboratory work Never insert spatulas, spoons, or knives into a bottle containing solid chemicals D Dispose any liquid chemicals in the sink

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

MULTIPLE CHOICE Question 11 Why are POPS so dangerous to organisms? They acidify water, so they can disrupt the ability of some organisms to reproduce. B. They are fat-soluble, so they can accumulate in the tissues of the body and be passed on through predation. They disrupt the hormones of the body, so they can cause organisms to be unable to reach homeostasis. They are water-soluble, so they can accumulate in the fluids and cells of the body.
Question • Choose a pharmaceutical drug and answer the following questions about the drug: o What is the IUPAC chemical name? o Who discovered it or what company discovered it and when (if available)? o What does the compound look like? Provide a picture of the compound. o What are the functional groups in the compound? o What are the medical uses for the drug? o What is the mechanism of action of the drug (how does it work to affect the disease or malady)? o How is it usually administered (ex. IV, pill, etc.)? o What are the potential adverse effects of the drug? Expert Answer Step 1 Note - Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for you. To get remaining sub-part solved please repost the complete question and mention the sub-parts to be solved. A pharmaceutical drug used for treatment of fever and for mild to moderate pain is Paracetamol. Its molecular formula
1. Discuss the guidelines in preventing chemical and physical hazards in food establishments.
What are biodegradable and non-biodegradable detergents ? Give one example of each.
Discuss the extraction method for Rose oil
Please don't provide handwriting solution
Why is isopropyl alcohol (main ingredient in rubbing alcohol) used as a disinfectant?
3. What is an antistatic agent? Which choice is a better explanation for its role in a plastic. a. It prevents static charging on material b. It prevents flaming on plastics c. It is used for easy degradation of polymer material on nature. d. It decreases toughness of plastic material e. None of these
Fractional distillation of Crude oil.
Which of the following safety equipment should be utilized to protect a personnel from directly inhaling toxic vapors while observing chemical reactions? fume hood O HEPA filter O air circulator surgical mask
Maceration of citrus peels
Aa.87. What are the flavor compound categories and primary characteristics? a. Nonvolatile (does not easily vaporize) b. Volatile (aroma's, can typically be smelled as these easily go into gas phase)