there is a volume of 10 ml of an aqueous solution of h2o2 at 3% mass....
there is a volume of 10 ml of an aqueous solution of h2o2 at 3% mass. the density of this solution is 1.01 g / ml. determine the moles of H2O2 contained in the 10ml of original solution
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there is a volume of 10 ml of an aqueous solution of h2o2 at 3%
mass....
A student performed the experiment described in this module, using 5.00 mL of a 2.50% H2O2 solution with a density of 1.01 g mL-1
2. A student performed the experiment described in this module, using 5.00 mL of a 2.50% H2O2 solution with a density of 1.01 g mL-1. The water temperature was 24°C, and the barometric pressure in the labora- tory was 30.50 in. Hg. After the student immersed the yeast in the peroxide solution, she collected 43.70 mL of O2.(8) Calculate the number of moles of H2O2 reacting (9) Calculate the number of moles of collected O2 (10) Calculate the molar volume of O2...
If you started with 24.75 ml of a hydrogen peroxide solution that contained 3.85 % H2O2...
If you started with 24.75 ml of a hydrogen peroxide solution that contained 3.85 % H2O2 by mass, what would be the volume of this gas in ml at STP? The density of the solution is 1.0 g/ml and the molar volume of a gas at STP is 22.4 L/mol. (Put your answer in 3 significant figures)
Reaction 1 (10 mL undiluted 1.0% IKI and 5 mL undiluted 3% H2O2) Reaction 2 (10...
Reaction 1 (10 mL undiluted 1.0% IKI and 5 mL undiluted 3% H2O2) Reaction 2 (10 mL diluted 0.5% IKI and 5 ml undiluted 3% H2O2) Reaction 3 (10 mL undiluted 1.0% IKI and 5 mL diluted 2.25% H2O2) 13. Answer the following. ( a) How many moles of H2O2 are present in Reactions 1 and 2? Show your work (include units). Hint: The initial H2O2 solution is 3% m/v (mass/volume) hydrogen peroxide in water. That means that 3 g...
A student performed the experiment described in this module, using 7.00 mL of a 1.8% H2O2 solution with a density o...
A student performed the experiment described in this module, using 7.00 mL of a 1.8% H2O2 solution with a density of 1.01 g ml-1. The water temperature was 20 °C, and the barometric pressure in the laboratory was 30.02 in. Hg. After the student immersed the yeast in the peroxide solution, she collected 45.1 ml of 02. (8) Calculate the number of moles of H2O2 reacting.
PLease help!! Reaction 1 (10 mL undiluted 1.0% IKI and 5 mL undiluted 3% H2O2) Reaction...
PLease help!! Reaction 1 (10 mL undiluted 1.0% IKI and 5 mL undiluted 3% H2O2) Reaction 2 (10 mL diluted 0.5% IKI and 5 ml undiluted 3% H2O2) Reaction 3 (10 mL undiluted 1.0% IKI and 5 mL diluted 2.25% H2O2) How many moles of I3K are present in Reactions 1 and 3? Show your work (include units). Hint: The initial I3K solution is 1% m/v (mass/volume) potassium triiodide in water. That means that 3 g H2O2 are present in...
7. What is the mole fraction of urea, CH4N2O, in an aqueous solution that is 46% urea by mass? 8. What volume of a...
7. What is the mole fraction of urea, CH4N2O, in an aqueous solution that is 46% urea by mass? 8. What volume of a 0.850 M solution of CaCl2 contains 1.28 g of solute? 9. The volume of a 27.0% (by mass) solution is 162.9 mL. The density of the solution is 1.128 g/mL. What is the mass of solute in this solution? 10. Concentrated sodium hydroxide is 19.4 M and has a density of 1.54 g/mL. What is the...
You measure out 4.9 mL of an aqueous ethylenediamine (H2NCH2CH2NH2) solution. This aqueous solution has a density of 0.950 g/mL and is 25.0% by mass ethylenediamine. How many moles of ethylenediamine are in the 4.9 mL?
You measure out 4.9 mL of an aqueous ethylenediamine (H2NCH2CH2NH2) solution. This aqueous solution has a density of 0.950 g/mL and is 25.0% by mass ethylenediamine. How many moles of ethylenediamine are in the 4.9 mL?
3. The density of 30 % (w/w) aqueous hydrogen peroxide (H2O2, MW = 38 g/mole) is...
3. The density of 30 % (w/w) aqueous hydrogen peroxide (H2O2, MW = 38 g/mole) is 1.05 g/mL. Recall that this solution consists of H2O2 and water (a) What's the molarity (M) of 30 % (w/w) aqueous hydrogen peroxide? (20 points) a. 7.29 b. 8.29 C. 9.29 d. 10.29 e. 11.29 (b) How much volume (mL) of 30 % (w/w) hydrogen peroxide (H2O2, MW = 38 g/mole) is required if you want to prepare 1.0 M of 1000 ml solution?...
You measure out 5.2 mL of an aqueous ethylenediamine (H2NCH2CH2NH2) solution. This aqueous solution has a...
You measure out 5.2 mL of an aqueous ethylenediamine (H2NCH2CH2NH2) solution. This aqueous solution has a density of 0.950 g/mL and is 25.0% by mass ethylenediamine. How many moles of ethylenediamine are in the 5.2 mL?
A volume of 70.0 mL of aqueous potassium hydroxide (KOH) was titrated against a standard solution...
A volume of 70.0 mL of aqueous potassium hydroxide (KOH) was titrated against a standard solution of sulfuric acid (H2SO4). What was the molarity of the KOH solution if 15.2 mL of 1.50 M H2SO4 was needed? The equation is 2KOH(aq)+H2SO4(aq)?K2SO4(aq)+2H2O(l) part b: Redox titrations are used to determine the amounts of oxidizing and reducing agents in solution. For example, a solution of hydrogen peroxide, H2O2, can be titrated against a solution of potassium permanganate, KMnO4. The following equation represents...
A student performed the experiment described in this module, using 7.00 mL of a 1.8% H2O2 solution with a density of 1.01 g ml-1. The water temperature was 20 °C, and the barometric pressure in the laboratory was 30.02 in. Hg. After the student immersed the yeast in the peroxide solution, she collected 45.1 ml of 02. (8) Calculate the number of moles of H2O2 reacting.
7. What is the mole fraction of urea, CH4N2O, in an aqueous solution that is 46% urea by mass? 8. What volume of a 0.850 M solution of CaCl2 contains 1.28 g of solute? 9. The volume of a 27.0% (by mass) solution is 162.9 mL. The density of the solution is 1.128 g/mL. What is the mass of solute in this solution? 10. Concentrated sodium hydroxide is 19.4 M and has a density of 1.54 g/mL. What is the...
3. The density of 30 % (w/w) aqueous hydrogen peroxide (H2O2, MW = 38 g/mole) is 1.05 g/mL. Recall that this solution consists of H2O2 and water (a) What's the molarity (M) of 30 % (w/w) aqueous hydrogen peroxide? (20 points) a. 7.29 b. 8.29 C. 9.29 d. 10.29 e. 11.29 (b) How much volume (mL) of 30 % (w/w) hydrogen peroxide (H2O2, MW = 38 g/mole) is required if you want to prepare 1.0 M of 1000 ml solution?...
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