Bitter Pill

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#75. Please if anyone can, help quick!

Calculate the cost per individual molecule of your pain reliever. Acetaminophen has the chemical formula C8H9NO2. Ibuprofen has the chemical formula C13H18O2. Paracetamol has the chemical formula C8H9NO2.

Which of the following is true about heavy metals and their environmental impact? a. Coffee and tea waste could be viable options to rid water of heavy metals. b. Based on the study shown in class, coffee is definitively the best option to rid heavy metals from water. c. Coffee, tea and caffeine all remove heavy metals from contaminated water through absorption. d. Copper is the most prevalent metal found in drinking water that can cause harm to the environment and humans. e. Copper and zinc concentrations in drinking water are significantly higher in areas with human activity.

What is the purpose of Safety Data Sheets? Why are these important when handling common food service chemicals? What information/components are generally included? How do Safety Data Sheets vary?

- Why is high pressure an attractive approach to sterilization and food preservation? a. It is much cheaper than thermal approaches. b. It preserves nutritional and sensory properties of foods much better than heat. c. It allows many other kinds of containers that cannot otherwise be used with heat. d. High-pressure equipment offers higher profit margins for manufacturers. So biophysical chemists can have jobs e.

A solution is contaminated with traces of cadmium, manganese, and cobalt. Which option would be the safest way to make it safer for human consumption? ksp OH- CO32- S2- Cd2+ 2.5x10-14 1.8x10-14 8x10-28 Mn2+ 1.6x10-13 5.0x10-10 2x10-53 Co2+ 1.3x10-15 1.0x10-10 5x10-22 A bubble carbon dioxide into the water B raise the pH to about 12 C lower the pH to about 2 D increase the sulfide level

1. Which of the following statements is TRUE regarding pasteurization? a. The sole objective of pasteurization is to sterilize the food. b. Pasteurization is carried out at higher pressures than sterilization of non-food items. c. Generally the lower the temperature, the shorter the time also. d. Pasteurization takes into account that many foods are more sensitive to heat than the contaminating pathogens. e. Pasteurization can be carried out at room temperature

Which type of refrigerant is the most environmentally friendly but dangerous to human health? a. R22 (Freon) Ammonia b. C. Hydrofluorocarbons (HFC) R410A (Puron) d.

Which of the following statements is not true?   a. It is okay to taste a chemical   b. No food or drink, including water, is allowed in laboratory   c. Read and re-read labels on containers of chemicals before opening them   d. Dispose the chemical waste to appropriate waste container