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Need help solving the calculationss. please show work on a seperae piece of paper and show...
Need help solving the calculationss. please show work on a
seperae piece of paper and show all work.
Background information.
Experiment 1: Measure the Freezing Point of Pure Water 10 1. Volume of water (mL): 10 2. Mass of water (g): 3. Freezing Temperature (°C): 0 Experiment 2: Measure the Freezing Point of a Solution of an Unknown Substance 1. Mass of FP sample 1 (g): 2.00 si 2. Mass of sample and water (g): 12.000 3. Freezing Temperature (°C):...
The density of NaCl is 2.165 g/mL, what volume of water would 200. g of NaCl...
The density of NaCl is 2.165 g/mL, what volume of water would 200. g of NaCl displace? Enter the numerical answer in decimal notation, do not include units this question type does not support units. What is the molality of the solution described above after all of the salt has dissolved? Enter the numerical answer in decimal notation, do not include units this question type does not support units.
Same Question and data but different parts. Please solve for all three. Last attempt left QUESTION...
Same Question and data but different parts. Please solve for all
three. Last attempt left
QUESTION 1 The data given in question-1 is used in the remainder of the postlab assignment questions. A 2.0 g of unknown material was dissolved in 9.00 mL of water (density of water = 1.0 g/mL) The freezing point of pure water is 0.00 °C and Kf of water is 1.86 °C/m. If the solution made above shows a new freezing point at -2.76 °C,...
In today's exp today's experiment you determine that you collected 1.33 X 10 mols of oxygen...
In today's exp today's experiment you determine that you collected 1.33 X 10 mols of oxygen Calculate (show your setup for the conversion!) how many mols of H,O, were in your hydrogen peroxide solution. Note: te: Tou will need a conversion factor from the equation you balanced in question 2. mols of H,O2 Based on your answer above, how many grams of H.O, were in the hydrogen peroxide solution? (HO, has a molecular weight of 34.0 g/mol) grams of H,02...
Experiment 10: Results Table (Allowed on concept review, pass in with your concept review quiz an...
Can
you complete the table using the data on page 175 please amd thank
you!
Experiment 10: Results Table (Allowed on concept review, pass in with your concept review quiz and data) Section: Date:_ Name: All results must be written in pen. Pencil is not allowed! Record all results with the correct number of significant figures and units No stray marks or notes should be present on this page. Only the tabulated results are allowed Determining the Boiling Point Elevation...
did i solve 1 a corectly or do my numbers need to be switched? Test Tube...
did i solve 1 a corectly or do my numbers need to be
switched?
Test Tube M y 315 dilu LaiculdLIUIS PARTS B AND C Measuring the Freezing Points of Water and Aqueous Solutions 142 Laboratory Data for Determining Pring Pet T hree Decent Solutions Mass of Delonised Water salute Mass of Solute Freezing Point None 4.28 -1.84331 Naci 4, 4337 0.2380 -2.23293 Unknown A -0.2393 2.62978 Unknown B 4.04866 0.7395 -2.14573 1 Use the following steps to determine the...
Colligative properties, such as boiling point elevation, depend on the number of dissolved particles in solution....
Colligative properties, such as boiling point elevation, depend on the number of dissolved particles in solution. For nonelectrolytes, no dissociation occurs, and so you can use the number of moles of solute to calculate both molality and molarity. In contrast, electrolytes dissociate, and therefore the molality and molarity must be calculated based on the number of moles of dissociated particles or ions. There are two ions per formula unit of NaCl. Therefore, we would expect the freezing-point depression ΔTf of...
Date Name Lab Section Partner(s) Determination of Molar Mass by Freezing Point Depression Data: Mass of...
Date Name Lab Section Partner(s) Determination of Molar Mass by Freezing Point Depression Data: Mass of empty test tube 2.2.6! Mass of test tube plus approximately 10.0 g of benzophenone 33.39 The difference is the mass of benzophenone (solvent) 8 kg Mass of unknown (-1.0 g) 1:09: 48.50°c 42.08. Freezing point of pure benzophenone Freezing point of benzophenone containing the unknown The difference is A fp CO Calculations: (Show set-up with cancellation of units) 1. molality of solution 2. moles...
need some help with this question thank you. ASAP * You received no credit for this...
need some help with this question thank you. ASAP
* You received no credit for this question in the previous attempt. You have found the following stock quote for RJW Enterprises, Inc., in the financial pages of today's newspaper. 52-WEEK YLD VOL NET STOCK HI L O % PE 100S CLOSE CHG (DIV) 70.83 43.07 RJW 1.70 3. 0 18 10 ?? -53 What was the closing price for this stock that appeared in yesterday's paper? (Do not round intermediate...
Study Example 8.1 on page 321. Then, calculate the molarity of a solution made by adding...
Study Example 8.1 on page 321. Then, calculate the molarity of a solution made by adding 5.57 g of CaCl2 to enough water to create a solution with a total volume of 2.50 L. Enter only a numerical value in the correct number of significant figures. Use the Periodic Table that is part of your exam to calculate molar mass. Do not enter units in the answer box, but know that the symbol for the unit of this calculation is...
Need help solving the calculationss. please show work on a
seperae piece of paper and show all work.
Background information.
Experiment 1: Measure the Freezing Point of Pure Water 10 1. Volume of water (mL): 10 2. Mass of water (g): 3. Freezing Temperature (°C): 0 Experiment 2: Measure the Freezing Point of a Solution of an Unknown Substance 1. Mass of FP sample 1 (g): 2.00 si 2. Mass of sample and water (g): 12.000 3. Freezing Temperature (°C):...
Same Question and data but different parts. Please solve for all
three. Last attempt left
QUESTION 1 The data given in question-1 is used in the remainder of the postlab assignment questions. A 2.0 g of unknown material was dissolved in 9.00 mL of water (density of water = 1.0 g/mL) The freezing point of pure water is 0.00 °C and Kf of water is 1.86 °C/m. If the solution made above shows a new freezing point at -2.76 °C,...
In today's exp today's experiment you determine that you collected 1.33 X 10 mols of oxygen Calculate (show your setup for the conversion!) how many mols of H,O, were in your hydrogen peroxide solution. Note: te: Tou will need a conversion factor from the equation you balanced in question 2. mols of H,O2 Based on your answer above, how many grams of H.O, were in the hydrogen peroxide solution? (HO, has a molecular weight of 34.0 g/mol) grams of H,02...
Can
you complete the table using the data on page 175 please amd thank
you!
Experiment 10: Results Table (Allowed on concept review, pass in with your concept review quiz and data) Section: Date:_ Name: All results must be written in pen. Pencil is not allowed! Record all results with the correct number of significant figures and units No stray marks or notes should be present on this page. Only the tabulated results are allowed Determining the Boiling Point Elevation...
did i solve 1 a corectly or do my numbers need to be
switched?
Test Tube M y 315 dilu LaiculdLIUIS PARTS B AND C Measuring the Freezing Points of Water and Aqueous Solutions 142 Laboratory Data for Determining Pring Pet T hree Decent Solutions Mass of Delonised Water salute Mass of Solute Freezing Point None 4.28 -1.84331 Naci 4, 4337 0.2380 -2.23293 Unknown A -0.2393 2.62978 Unknown B 4.04866 0.7395 -2.14573 1 Use the following steps to determine the...
Date Name Lab Section Partner(s) Determination of Molar Mass by Freezing Point Depression Data: Mass of empty test tube 2.2.6! Mass of test tube plus approximately 10.0 g of benzophenone 33.39 The difference is the mass of benzophenone (solvent) 8 kg Mass of unknown (-1.0 g) 1:09: 48.50°c 42.08. Freezing point of pure benzophenone Freezing point of benzophenone containing the unknown The difference is A fp CO Calculations: (Show set-up with cancellation of units) 1. molality of solution 2. moles...
need some help with this question thank you. ASAP
* You received no credit for this question in the previous attempt. You have found the following stock quote for RJW Enterprises, Inc., in the financial pages of today's newspaper. 52-WEEK YLD VOL NET STOCK HI L O % PE 100S CLOSE CHG (DIV) 70.83 43.07 RJW 1.70 3. 0 18 10 ?? -53 What was the closing price for this stock that appeared in yesterday's paper? (Do not round intermediate...
Study Example 8.1 on page 321. Then, calculate the molarity of a solution made by adding 5.57 g of CaCl2 to enough water to create a solution with a total volume of 2.50 L. Enter only a numerical value in the correct number of significant figures. Use the Periodic Table that is part of your exam to calculate molar mass. Do not enter units in the answer box, but know that the symbol for the unit of this calculation is...
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