In the Idometric Analysis of Copper Oxide, why did I not need to accurately weigh out...
In the Idometric Analysis of Copper Oxide, why did I not need to accurately weigh out the KI used in the standard and unknown analysis?
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In the Idometric Analysis of Copper Oxide, why did I not need to
accurately weigh out...
I need questions : Percent silver in alloy? Mass of copper in copper oxide? Mass of...
I need questions :
Percent silver in alloy?
Mass of copper in copper oxide?
Mass of copper in alloy?
Percent copper in alloy?
Please show work!
DATA Mars 250ml, beaker /32 059 Mass 250ml. beaker & alloy 133.026g Mass copper wire (before reaction) / 958. Mass copper wire (after reaction) Mass 250ml. beaker & silver Mass 400ml. beaker 1.7539 132 664 149.939 150. 2779 Maxx 400ml, beaker & copper oxide (Show answer here) CALCULATIONS Show set up here) 250 feuter...
Why is standardization of NaOH necessary? Select one: a. to ensure that hydrolysis did not occur...
Why is standardization of NaOH necessary? Select one: a. to ensure that hydrolysis did not occur prematurely b. It reacts with acids readily. c. NaOH is hygroscopic and is hard to weigh accurately. od to ensure that the mass added is consistent with the standard kilogram
How many grams of NaOH do I need to weigh out to make 500 mL of...
How many grams of NaOH do I need to weigh out to make 500 mL of a 1.0 M Solution?
Combustion Analysis Copper(II) oxide (CuO) pellets UU Excess Oxygen in oxygen out Furnace Sodium hydroxide (traps...
Combustion Analysis Copper(II) oxide (CuO) pellets UU Excess Oxygen in oxygen out Furnace Sodium hydroxide (traps CO) Drying agent (traps H2O) Sample dish х СО, + у H,0 С, н, о, + nO, 2 o Start with 58 g of compound that has only C, H, and O in it After reaction find you have 132 g of CO2 and 54 g of H20 Determine mass % of each element and empirical formula
The oxidation of copper(I) oxide, Cu, O(s), to copper(II)oxide, CuO(s), is an exothermic process. 2 Cu,C(s)...
The oxidation of copper(I) oxide, Cu, O(s), to copper(II)oxide, CuO(s), is an exothermic process. 2 Cu,C(s) + 0,(9) — 4 CuO(s) The change in enthalpy upon reaction of 50.70 g Cu, O(s) is -51.73 kJ. Calculate the work, w, and energy change, AUr, when 50.70 g Cu, O(s) is oxidized at a constant pressure of 1.00 bar and a constant temperature of 25 C. Note that A Er is sometimes used as the symbol for energy change instead of AU...
Calculate how much KOH you will need to weigh out to make 250 mL of a...
Calculate how much KOH you will need to weigh out to make 250 mL of a 0.2M KOH solution. How much potassium hydrogen phthalate (molar mass 204.23 g/mol) do you need to weigh out if you want to use 20.00 mL of your standard 0.2000 M KOH solution to titrate the potassium hydrogen phthalate sample? Note: potassium hydrogen phthalate has ONE hydrogen that reacts with KOH. We often use KHP as our "simplified formula" for potassium hydrogen phthalate rather than...
I need both of these answered assuming for 5 the volume of NAOH is 100 ml...
I need both of these answered
assuming for 5 the volume of NAOH is 100 ml and the actual
concentration of acetic acid is 20.
(5) What concentration NaOH should be used for your lab if that is what I did with the original vinegar? (choose the best option) (A) 0.0100 M (C) 0.25 (B) 0.100 M (D) 1.00 M (E) 2.00 M (6) Potassium Hydrogen Phthalate (KHP) is used as a primary standard (to standardize basic solutions) because it...
1.1 Accurately (using an analytical balance ONLY) weigh 1.4 g of Fe(NH4)2(SO4) 2-6H20 1.2 Dissolve in...
1.1 Accurately (using an analytical balance ONLY) weigh 1.4 g of Fe(NH4)2(SO4) 2-6H20 1.2 Dissolve in 50 mL of 4% sylturisacid in a beaker. 1.3 Transfer into a 1 L volumetric flask; adjust the volume and mix well. Note the purity of the Fe(NH4)2(SO4)2.6H20 given on the label of the container. 1.4 Transfer this solution into a 1 L glass bottle. Preparation of working iron standard solution: 1.5 Pipet 10.00 mL of the iron standard stock solution into a 500.0...
to have Earned Value Analysis (EVA) prove valuable in the project, you need to accurately collect...
to have Earned Value Analysis (EVA) prove valuable in the project, you need to accurately collect information about the status of each task and the on-going project costs. What are some processes that can be used to collect data fo computing EV and AC? How can you ensure that collecting cost and schedule information is not so cumbersome that it almost results in the need for a project task be added to the plan just to accommodate the process?
Why is it necessary to rinse the pipets with the solution to be used in them...
Why is it necessary to rinse the pipets with the solution to be used in them before using the pipets? Why is it necessary to rinse out the cuvette with the solution to be used in it before making our measurements? Why must we use the same cuvette for ail measurements? What is the purpose of "zeroing" the spectrophotometer using a "blank" solution (water)? What assumptions are we making in the calculations and analysis for this lab? 6.019 g of...
I need questions :
Percent silver in alloy?
Mass of copper in copper oxide?
Mass of copper in alloy?
Percent copper in alloy?
Please show work!
DATA Mars 250ml, beaker /32 059 Mass 250ml. beaker & alloy 133.026g Mass copper wire (before reaction) / 958. Mass copper wire (after reaction) Mass 250ml. beaker & silver Mass 400ml. beaker 1.7539 132 664 149.939 150. 2779 Maxx 400ml, beaker & copper oxide (Show answer here) CALCULATIONS Show set up here) 250 feuter...
Why is standardization of NaOH necessary? Select one: a. to ensure that hydrolysis did not occur prematurely b. It reacts with acids readily. c. NaOH is hygroscopic and is hard to weigh accurately. od to ensure that the mass added is consistent with the standard kilogram
Combustion Analysis Copper(II) oxide (CuO) pellets UU Excess Oxygen in oxygen out Furnace Sodium hydroxide (traps CO) Drying agent (traps H2O) Sample dish х СО, + у H,0 С, н, о, + nO, 2 o Start with 58 g of compound that has only C, H, and O in it After reaction find you have 132 g of CO2 and 54 g of H20 Determine mass % of each element and empirical formula
The oxidation of copper(I) oxide, Cu, O(s), to copper(II)oxide, CuO(s), is an exothermic process. 2 Cu,C(s) + 0,(9) — 4 CuO(s) The change in enthalpy upon reaction of 50.70 g Cu, O(s) is -51.73 kJ. Calculate the work, w, and energy change, AUr, when 50.70 g Cu, O(s) is oxidized at a constant pressure of 1.00 bar and a constant temperature of 25 C. Note that A Er is sometimes used as the symbol for energy change instead of AU...
Calculate how much KOH you will need to weigh out to make 250 mL of a 0.2M KOH solution. How much potassium hydrogen phthalate (molar mass 204.23 g/mol) do you need to weigh out if you want to use 20.00 mL of your standard 0.2000 M KOH solution to titrate the potassium hydrogen phthalate sample? Note: potassium hydrogen phthalate has ONE hydrogen that reacts with KOH. We often use KHP as our "simplified formula" for potassium hydrogen phthalate rather than...
I need both of these answered
assuming for 5 the volume of NAOH is 100 ml and the actual
concentration of acetic acid is 20.
(5) What concentration NaOH should be used for your lab if that is what I did with the original vinegar? (choose the best option) (A) 0.0100 M (C) 0.25 (B) 0.100 M (D) 1.00 M (E) 2.00 M (6) Potassium Hydrogen Phthalate (KHP) is used as a primary standard (to standardize basic solutions) because it...
1.1 Accurately (using an analytical balance ONLY) weigh 1.4 g of Fe(NH4)2(SO4) 2-6H20 1.2 Dissolve in 50 mL of 4% sylturisacid in a beaker. 1.3 Transfer into a 1 L volumetric flask; adjust the volume and mix well. Note the purity of the Fe(NH4)2(SO4)2.6H20 given on the label of the container. 1.4 Transfer this solution into a 1 L glass bottle. Preparation of working iron standard solution: 1.5 Pipet 10.00 mL of the iron standard stock solution into a 500.0...
Why is it necessary to rinse the pipets with the solution to be used in them before using the pipets? Why is it necessary to rinse out the cuvette with the solution to be used in it before making our measurements? Why must we use the same cuvette for ail measurements? What is the purpose of "zeroing" the spectrophotometer using a "blank" solution (water)? What assumptions are we making in the calculations and analysis for this lab? 6.019 g of...
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