What is the importance of giving hyperbaric oxygen during treatment of poisoning associated with certain fumes and gases? Provide at least 3 poisoning where hyperbaric oxygen is required. 2. Discuss the importance of maintaining the normal blood pressure during poison management. What substances/poisons can increase blood pressure? Decrease blood pressure? Give 5 examples for each.

Materials Needed solid I2 solid CUSO4-5H20 food dye solid (NH4)2SO4 heavy metals waste container halogenated waste container non-halogenated waste container semi-micro test tubes and rack regular test tubes and rack squash pipettes acetone cyclohexane propan-2-ol Method Part A: Solubility of ionic and molecular solids 1. Place a small amount (about the size of 1 grain of rice, see picture) of copper sulfate into each of three DRY semi-micro test tubes. Add 20 drops of water to the first test tube and gently flick the test tube with your finger to ensure mixing. 2. Repeat step 1 using acetone in place of water as the solvent in the second test tube. 3. Repeat step 2 replacing acetone with cyclohexane in the third test tube. Hold the test tubes against a white background to compare the solubility of copper sulfate in the three solvents and record your results. Discard these mixtures into the heavy metals waste container in the fume cupboard. Once these test tubes have been emptied you…

1. A gas has a volume of 300 mL at 300 mm Hg. What will its volume be if the pressure is changed to 500 mm Hg? 12. How many liters of 3.4 M solution can be made using 78 grams of isopropano (C3H8O)? 14. What is the concentration of a solution made from dissolving 32.9 grams of ammonium nitrate in a total solution volume of 500.0 mL?

Give both answer

10. Normal Saline: Purified Water:

Give 5 examples of freshwater organisms and their dissolved oxygen requirements.

ncreasing the pressure will __________ the solubility of a gas in a liquid.     decrease     increase     have no effec

Dead zones are areas in the world’s oceans and lakes that are void of life due to low oxygen levels. Explain why dead zones are often located along heavily inhabited coastlines.

Name: Date: Section: Prelaboratory Assignment: Determination of the Hardness of Water 1. A 0.512 g sample of CaCO, is dissolved in 12 M HCl and the mixture is diluted to 250 mL. a) How many moles of CaCO, are used? moles b) What is the [Ca²*] in the 250 mL solution? b) How many moles of Ca²* are in a 25 mL sample of the 250 mL solution? moles

What volume of a 4.00 × 10-4 M FeSCN²+ solution would be needed to prepare 50.0 mL of a 7.20 × 10-5 M solution? O A. 20.0 mL O B. 278 mL O C. 5.56 mL O D. 9.00 mL O E. 3.60 mL