Cell Resp and Photosynthesis Post-lab_7-25-2023

I need help calculating the initial concentrations please.

Help with the last questions on the bottom please.

For water and wastewater engineering. This is for a review I made, not for a grade. Please show equations and choose and answer choice.

STANDARD SAMPLE PREPARATIONS FOR ABSORBANCE & CONCENTRATION DATA Concentration of stock nickel sulfate hexahydrate solution = .400 Molarity Sample Volume Absorbance Concentration (In Molarity) a 5 mL .179 10 mL .329 15 mL .588 20 mL .760 25 mL .939 Reference Blank = 0 Please show how to find Molarity, please show steps. Thank you and stay safe.

How many milligrams of strontium carbonate, SrCO3, will dissolve in 4.000 L of deionized water at 25°C? The Kgp for Srcoz at 25°C is 5.60 x 10°10 and its molar mass is 147.63 g/mol. Input your answer in units of mg to one decimal place. Do NOT input units. Do not use scientific notation. Your Answer: Answer

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

What is the molarity of an aqueous solution that contains 0.0720 g C2H6O2 per gram of solution . The density of the solution is 1.04 g/mL X STARTING AMOUNT ADD FACTOR ANSWER RESET *( ) 1.04 62.08 6.022 x 1023 0.0720 1.21 x 10-3 4650 1.12 1000 1.21 1 0.001 g C2H.O2 mol C2H6O2 g C2H&Oz/mol g solution/mL mL solution g C2H6O2/g solution M C2H6O2 L solution g solution

A water sample collected downstream from a gold-mining operation returns a cyanide concentration of 6.18μg/L CN-. A 10-mL aliquot is spiked with 100μL of 500.0μg/L cyanide and analyzed. Analysis returns a cyanide concentration of 10.5μg/L CN-. What is the percent recovery for the spike? Make sure to consider any dilution of the original sample.

A solution of potassium hydroxide KOH was prepared by dissolving 1g of it in 100ml of distilled water. If you know that the water density is 1g / ml, calculate: 1. The molar focus 2. Molar concentration

Can you help me answer this questions, that question is related to the chart Experimental observation. Low conc solution ____ unknown.    high conc solution____

you can only work on it for 90 mins Instructions Multiple Attempts Not allowed. This test can only be taken once. Force Completion This test can be saved and resumed later. Your answers are saved automatically. * Question Completion Status: A Moving to another question will save this response. Question 28 10 Calculate the molarity of the resulting solution prepared by diluting 25.0 mL of 18.0% ammonium chloride, NH 4CI, (density = 1.05 g/mL) to a final volume of 80.0 mL. O a. 0.0536M O b.0.00105 M OC. 1.10 M O d.0.059 M O e.0.292 M » A Moving to another question will save this response. acer

Please help me choose and explain itt. Thank you!!

Assuming the stock solution is 900uM, determine the concentrations of the standards A through E

Most of us have had a glass of water from a Brita® pitcher. What is inside of a Brita® filter cartridge and what does it filter out? What doesn’t it filter out?

Water is the solvent of choice to separate a mixture of adipic acid and salicylic acid because it dissolves both substances easily. Group of answer choices True False

Can you please provide steps for how to answer the following? This is not a graded assignment, it's just practice questions for no credit.  The concentration of the stock glucosamine solution is 100 mM. A student took 0.5 ml of this stock solution and added it to a test tube containing 24.5 ml of water. The student then took 1 ml out of the diluted solution and added it to another test tube containing 9 ml of water. The concentration of glucosamine in the second test tube will be: a. 0.4 mM b. 0.8 mM c. 1.2 mM d. 1.6 mM e. 0.2 mM. If you took 10 ml out of a protein stock solation of 0.25 mg/ml and added it to a bottle containing 40 ml of buffer and 500 ul of cofactor. What will be the final concentration of the protein in the bottle? a. 55.5 ug/ml b. 45.5 ug/ml c. 52.5 ug/ml d. 49.5 ug/ml e. 65.5 ug/ml

Can you help me solve question 3? “The manufacturer of vinegar…”

Molar concentration of the bleach stock solution: .134 mol/L Solutions(Dilutions) Concentration% Experiment 1 0.25 Experiment 2 0.50 Experiment 3 1.0 Fill in the OCl- molar concentrations for each experiment. Solutions(Dilutions) OCl- Concentrationmol/L Experiment 1   Experiment 2   Experiment 3

30 20 10 From the procedure 2. Assemble the simple distillation apparatus as generally shown in Figure SD.1 in the lab manual, ensuring that the thermometer bulb is aligned at, or slightly below, the Y in the distillation head. Each ground joint is greased by putting three or four stripes of grease lengthwise around the male joint and pressing the joint firmly into the other without twisting. 3. Attach a water condenser to the distillation head. 4. Remember, water goes in the bottom and out the top. Attach a clamp holder to the end of the drain tube to keep it weighted in the drain. Turn water to a trickle. If it is slowly draining, it is high enough. Begin a low flow of water through the condenser. 5. Place the set up on a heating/stir plate. 6. Turn on the hot plate to start heating the solution. Monitor the temperature and the boiling of the solution throughout the distillation process. 7. Record the temperature of the distillate when the first drops are recovered. 30.0 8. Adjust…

How do I set up the equation to solve for trail 2?