Table 5, Dissolved oxygen of distilled water at different temperatures Temperature (C) Volume of aliquot (ml.) 5.00 Volume of sodium thiosulfate used (mL) Dissolved oxygen (ppm) 10.3 4 13.60 25 5.00 12.20 8.23 73 5.00 5.40 4.03 1. From your data, calculate the dissolved oxygen content in distilled water at 73 °C (data in Table 5) without using the DO formula. Detailed calculation and formulas are required in this answer.

10. Normal Saline: Purified Water:

A student wants to determine how different factors affect the rate of dissolving a solid in water. Trial Size of Particles Rate of Dissolving 1 small 10 sec medium 20 sec 3 large 30 sec What procedures can be performed on trials 2 and 3 so that the rate of dissolving is the same as trail 1? The student can decrease the temperature The student can decrease the pressure The student can increase the pressure The student can increase the temperature

Part E Write balanced complete ionic equation for NaOH(aq)+ HC,H,O2 (aq)→H,O(1) + NaC, H,O2 (aq). Express your answer as a chemical equation. Identify all of the phases in your answer. ΑΣΦ x" O That's not quite right. Please check your formatting and try again No credit lost. Try again. Submit Previous Answers Request Answer Part F Write balanced net ionic equation for NAOH(aq) | HC,H,O, (aq) H,O(1) i NaC, H,O, (aq). Express your answer as a chemical equation. Identify all of the phases in your answer.

A chef made some Italian salad dressing. The salad dressing contains vinegar, water, spices & seasonings, and oil. The container of salad dressing was left on the counter for one hour. Explain what the salad dressing looked like in the container and why.

A pool contains 4500 gallons of 1.4% chlorine solution, which means that 1 4% of the liquid in the pool is actially chlorine: the rest is water. The goal is to find how many gallons of chlorine would need to be added to increase the concentration in the pool to 3%. Round your answer to the nearest gallon. ___ gallons would need to be added to increase the concentration in the pool to 3%

) In Chapter 8 (The Water Soluble Vitamins), section 8.1 (What are Vitamins) discusses  Absorption, Storage and Excretion of Vitamins, both water- and fat-soluble. How readily a vitamin can be absorbed and utilized by the body is called its bioavailability. Fat-soluble vitamins require _fat__in the diet for absorption while water soluble vitamins, which include all B vitamins and vitamin ______, dissolve in water and depend on energy-requiring transport systems or need to be bound to specific molecules in the GI tract in order to be absorbed in the small intestine. Once absorbed into the blood, vitamins must be transported to the cells, mostly by being bound to _________________________ for transport.  Fat soluble vitamins, which include vitamins ______, ________, _________ and _______ are incorporated into ___________________ for transport from the intestine. With the exception of vitamin B12, the water-soluble vitamins are easily excreted from the body in the urine. In contrast,…

A A student prepares a 0.52 M aqueous solution of 4-chlorobutanoic acid (C₂H CICO₂H). Calculate the fraction of 4- chlorobutanoic acid that is in the dissociated form in his solution. Express your answer as a percentage. You will probably find some useful data in the ALEKS Data resource. Round your answer to 2 significant digits. % ☐x X G

2. Show solution. Thanks!

Hello can you please help me answer this?

1. ASSERTION: The solubility of gases in water follows the order O2 < N2 < SO2 < CO2 < NH3. REASON: For appreciable solubility, the solute-solvent interactions should outweigh the solute-solute and     solvent-solvent interactions. a. Assertion and reason both are correct statements and reason is the correct explanation for assertion. b. Assertion and reason both are correct statements but reason is not the correct explanation for assertion. c. Assertion is a correct statement but reason is a wrong statement. d. Assertion is a wrong statement but reason is a correct statement. 2. ASSERTION: The solubility of all gases in water decreases with the rise in temperature. REASON: The dissolution of gases in water is an endothermic process. a. Assertion and reason both are correct statements and reason is the correct explanation for assertion. b. Assertion and reason both are correct statements but reason is not the correct explanation for assertion. c. Assertion is a correct…

How do I calculate question 1 part b (in the picture)? I don’t even know where to start.    Thank you!

• Rinse the test tubes with distilled water. Part B Follow these steps to complete the table: 1. Reuse the same test tubes from part A, labeled Fe2+ and Fe3+. Be sure they're clean. 2. Add 4 milliliters of iron(II) sulfate to the test tube labeled Fe2*. 3. Add 4 milliliters of iron(II) nitrate to the test tube labeled Fe3+. 4. Add 4 milliliters of potassium iodide to each test tube. 5. Add 1 milliliter of the prepared starch solution to each test tube. 6. Record your observations, noting any evidence of a chemical reaction. If there is no evidence of a reaction, write "no reaction." В I U 三E E三 三 X, Font Sizes A - Substances Mixed Iron lon Present Description of the Reaction iron(II) sulfate, potassium iodide, and starch iron(II) (Fe2+) iron(III) nitrate, potassium iodide, and starch iron(III) (Fe)

Use the exothermic and endothermic interactive to determine the final temperature of each solution described in the table. Add 5 g5 g of potassium hydroxide to 100 mL100 mL of water at an initial temperature of 20 °C20 °C . Add 5 g5 g of potassium hydroxide to 200 mL200 mL of water at an initial temperature of 20 °C20 °C . Add 10 g10 g of potassium hydroxide to 100 mL100 mL of water at an initial temperature of 20 °C20 °C .

The original concentration of a solution is 200 mg/dL. The solution was diluted 1:5. Then one part of the resulting solution was added to 5 parts water. What is the final concentration?SKIP IF YOU ALREADY DID THIS OR ELSE DOWNVOTE

Data Sheet 4 ble gives the recommended mass of salt to dissolve in each of the four test tubes. Show a sample calculation for the solubility of KNO, using your actual mass from tube #1. Complete your graph on the back of this sheet. Solution # Recommended mass KNO3 Actual mass of KNO, (g per 5 mL H₂O) Solubility & KNO, 100 g H₂O Saturation temperature (°C) (g) 1 2.0 51.3 2.1971 2 62.5 4.0 11.1568 3 72.7 6.0 6.0112 83.6 4 8.0 806 Sample Solubility Calculation: Questions 1. According to your data, how does the solubility of KNO, change with increasing temperature? Does this indicate an endothermic or exothermic dissolving process? Explain. 2. Using your graph, indicate if each of these solutions would be saturated or unsaturated: a) 110 g of KNO3 in 100 g of water at 40 °C b) 60 g of KNO3 in 100 g of water at 70 °C c) 140 g of KNO3 in 100 g of water at 60 °C 3. According to your graph, what mass of KNO3 will dissolve in 100 g of water at 30 °C?

Purified water contains not more than 10 ppm of total solids. Express this concentration as a percentage.

A student prepares a 0.28 mM aqueous solution of propionic acid (C₂HCO₂H). Calculate the fraction of propionic acid that is in the dissociated form in his solution. Express your answer as a percentage. You will probably find some useful data in the ALEKS Data resource. Round your answer to 2 significant digits. % x10 ? X Ś

Which of the following is used in the fractional distillation but is not used in the simple distillation? Hickman still Air condenser Thermometer adapter Water condenser

For lab #3, Emily needs to pipette a 25.00 mL aliquot of lemonade into a 250 mL beaker. Place the steps below in the order that Emily would need to follow to correctly pipette the lemonade. < Holds the pipette vertical and drains the lemonade into the 250 mL beaker. Rinse the pipette 3 times with the lemonade. Pulls the lemonade up past the line on the pipette. Pours a small amount of the lemonade sample into a small beaker.

Each step should be a balanced chemical equation.

100% - Normal text Times New. 12 BIUA CD Real-World Chemistry 8.)Suggest why a person who has a higher than normal temperature might have rubbing alcohol put on their skin? 9.)Table salt can be collected from salt water by evaporation. The water is placed in large shallow containers. What advantage do these shallow containers have over deep containers with the same volume? %23 %24 % 4. 6 8. 9- e h k b b0 di

A student prepares a 0.58M aqueous solution of propionic acid (C2H,CO₂H). Calculate the fraction of propionic acid that is in the dissociated form in his solution. Express your answer as a percentage. You will probably find some useful data in the ALEKS Data resource. Round your answer to 2 significant digits. 0%

What is the primary function of the aeration step in water treatment?