magine you have 3 beakers of water. the water temp in beaker 1 is 0c, beaker 2 is 24c, and beaker 3 is 45c. if you place the same amount of potassium permanganate crystals into these 3 beakers, predict what would happen to the crystals
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imagine you have 3 beakers of water. the water temp in beaker 1 is 0c, beaker 2 is 24c, and beaker 3 is 45c. if you place the same amount of potassium permanganate crystals into these 3 beakers, predict what would happen to the crystals
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- If your 16x concentrated stock solution contains 20g of NaCl per liter, how much Nacl would one liter of your working solution contain? Round your result to 2 decimal points. g of NaclA 1.143 g sample contains only vitamin C (C,H, 0,) and sucralose (C,H,Cl, O,). When the sample is dissolved in water to a total volume of 31.7 mL, the osmotic pressure of the solution is 3.91 atm at 285 K. What is the mass percent of vitamin C and sucralose in the sample? vitamin C: sucralose: %A group of students designed an experiment to determine the impact of sucrose concentration on the weight of potato cubes. The pieces of potato were initially the same weight, shape, and size. Each potato piece was submerged into a beaker containing one of the sucrose concentrations for 30 minutes. The final weight of the potato was measured and recorded in the table. Which TWO conclusions can be correctly drawn from this data? A In the 0.4 mol/dm3 solution, the sucrose molecules moved across the semi-permeable membrane to go from a lower solute concentration (the potato) to a higher solute concentration (the sucrose solution), leading to a decrease in the weight of the potato. B In the 1 mol/dm3 solution, the water molecules moved across a semi-permeable membrane to go from a lower solute concentration (the potato) to a higher solute concentration(the sucrose solution), leading to a decrease in weight of the potato. C In the 0.8 mol/dm3 solution, the sucrose molecules moved…
- You dissolve a 3.435 gram sample of potato in acid to determine the levels of solanine (the reason why green potatoes are poisonous) and diluted it to a total volume of 500.0 mL. You have also created a standard curve as outlined below. Solve for the ug/gram concentration of solanine in the potato sample. ppm Solanine Std. Abs 0.213 5 0.315 10 0.423 15 0.532 Unknown sample 0.314 Your Answer:Imagine that you have a jar of syrup A and a plastic Ziploc bag of syrup B. You poke tiny holes in the bag and put it inside the jar. Where will water move? Hint: remember that water moves from the more watery area (high concentration of water) to the less watery area (low concentration of water). Water moves from the bag (B) to the jar (A) Water moves from the jar (A) to the bag (B)In each picture, mark a plus + where the water concentration is higher, and a minus - where it is lower.
- The glucose content of samples can be determined using Nelson't test. The equation of the line for the standard curve preapred for varying concentrations of glucose is y = 3.0x + 0.2. Based from this information, determine the glucose concentration (in M) of a strawberry preserve having an absorbance reading of 1.35.You record the absorbance of your unknown BSA sample at 0.276. What is the concentration in ug/mL of the unknown assuming you have a standard curve with the line of best fit with y=0.0001x+0.0038 as its equationUsing my chart can you help me answer this question? Why did we select distilled water to be the negative control?
- A patient needs to receive 1 L of 0.9% NaCl solution over 8 hours. You have an infusion pump that delivers fluids in mL/hour. a. How many mL of the solution will the patient receive per hour? b. If the IV tubing being used delivers 20 drops/mL, how many drops per minute should the IV be set to deliver?A solution commonly used to grow plants in hydroponics is the Hoagland solution. A recipe for this solution is listed below. How many grams of NaFeDTPA are needed to prepare 500 ml of the stock solution of this chemical compound? TABLE 5.3 Composition of a modified Hoagland nutrient solution for growing plants (Part 1) Concentration Volume of stock of stock solution Concentration Final solution per liter of final solution Molecular of stock concentration of element Compound weight solution Element g mol mM g L-1 ml pM ppm Macronutrients KNO, Ca(NO),"4H,0 236.16 NH,H,PO, MgSO, 7H,0 1,000 1,000 101.10 101.10 6.0 16,000 224 236.16 4.0 K 6,000 235 1,000 1,000 115.08 115.08 2.0 Ca 4,000 160 246.48 246.49 1.0 P 2,000 62 1,000 32 Mg 1,000 24 Micronutrients KCI 74.55 25 1.864 CI 50 1.77 61.83 H,BO, MnSO, H,O ZnSO, 7H,0 CusO,"5H,0 H,MoO, (85% MoO,) 12.5 0.773 25 0.27 169.01 1.0 0.169 Mn 2.0 0.11 2.0 287.54 1.0 0.288 Zn 2.0 0.13 249.68 0.25 0.062 Cu 0.5 0.03 161.97 0.25 0.040 Mo 0.5 0.05 16.1-…You just made a 1.5M permanganate solution. What concentration is your potassium permanganate solution in percent? "K: 39.10 g/mole" "Mn: 54.94 g/mole" "O: 16 g/mole" "MW of KMnO4 is 158.04 g/mole" O a. 0.24% Ob. 20.1% O c. 15.8% O d. 23.7% O e. 2%