lab How many molecules of water are you drinking if you were to consume 450mL bottle...
Over time, hydrogen peroxide, H2O2, degrades into water and oxygen gas. A bottle of hydrogen peroxide is expired and you need to determine the concentration. A titration is performed using the following equation: 3 H2O2(aq) + 2 NaMnO4(aq) → 3 O2(g) + 2 MnO2(aq) + 2 NaOH(aq) + 2 H2O(l) Note that permanganate ion, MnO4-, is purple, while manganese (IV) ion, Mn4+, is colorless. A quantity of 683 mL of 3.44 M NaMnO4 was measured and placed in a beaker. The solution...
You are given a large bottle of a glucose stock solution at a concentration of 0.900 M, and are asked to prepare 250mL of a 0.15 M glucose solution. How many mL of water and of the stock solution are needed to accomplish this task?
If you consume ONE molecule of pyruvate, how many ATP molecules will you generate?
4. Find the mass, in grams, of 4.21 x 1023 molecules of N2 5. How many particles are there in 2.34 g of a molecular compound with a gram molecular mass of 233 g? T2 6. Aspartame is an artificial sweetener that is 160 times sweeter than sucrose (table sugar) when iissolved in water. It is marketed by G.D. Searle as Nutra Sweet. The molecular formula of aspartame is C14H18N205 a) Calculate the gram-formula-mass of aspartame. To ed b) How...
Please answer 11-16 10. How many sugar molecules are present in 300 mL of a 2.0 M solution? (The formula for sugar is C12H220)Sugar conce mbakxvolme 2.0 x .300 6.6 mol 11. Your teacher asks you to prepare 500 mL of a 2.75 molar solution of Nacioran upcoming laboratory experiment. Write a step-by-step procedure describing how you would carry out this task. 12. When water is added to a solution, the solution will be more diluted. What is the equation...
Question 1. You will inject air into a sealed reaction bottle at room temperature and measure the pressure change within the bottle. Suppose 25.0 mL of air at an initial temperature of 20.5 degrees Celsius and an initial pressure of 1.010 atm was injected into a reaction bottle that contained 30.0 mL of water. A. How many moles of air are contained in the syringe? B. Pretend the gas you injected into the vessel all dissolved into the 30.0 mL...
When the half reaction below is balanced in an acidic solution, how many water molecules are added and to which side? 12 → 103- Choose 12. Choose best answer from drop-down menu: 2 points Consider the following reaction: 2Fe2+ + Cu2+ 2Fe3+ + Cu When the reaction comes to equilibrium, what is the cell voltage? Fe++ e - Fe2 ER = 0.77 V ER = 0.34 V Cu2+ + 2e → Cu Choose
1. The solubility of a gaseous solute in water is by an increase in pressure. Increased decreased not affected 2. A supersaturated solution may be prepared by slowly cooling down a solution saturated at an elevated temperature. TRUE FALSE 3. A dilution is a solution made by adding a solvent to a supersaturated solution. TRUE FALSE 4. When sugar & water are mixed, a clear liquid results. In this scenario, the sugar is considered a Solute Solution Solvent All of...
I need help on solving these equations I keep getting stuck 13, How would you make 1 L of a 2% NaCl solution? 14, How would you make 100 ml of a 5% NaCl solution? 15, How would you make 2L of a 10% glucose solution? 16, How would you make 400 ml of a 3% glucose solution? 17. What is the percent solution if you put 3000 mg of CaClh in 100 ml of H20? 18. If you put...
PART A: I) How many grams of CoI2 are there in 225 grams of an aqueous solution that is 21.0 % by weight CoI2. II) An aqueous solution of iron(III) sulfate, Fe2(SO4)3, contains 9.24 grams of iron(III) sulfate and 17.6 grams of water. The percentage by mass of iron(III) sulfate in the solution is %. Part B: I) A solution was made by dissolving 2.39 g sodium chloride () in 27.9 g water (h20). What is the mole fraction of...