Homework Answers
nAir = 759.2 Torr * (0.0038L – 0.002L) / 62.4 * 5°C + 279 K)
= 759.2 * 0.0018 / 62.4 * 284
= 1.366 / 17721.599 = 7.708 * 10^-5 moles of air.
If the plot of ln P vs 1/T is made slope (m) = -?Hvap/R
Add Answer to:
Calculate delta Hvap for water from your plot (m= -delta Hvap
/ R)
Carry out the...
Gas Laws Pre-Lab Name Section 1. Calculate the number of moles of hydrogen gas generated when...
Gas Laws Pre-Lab Name Section 1. Calculate the number of moles of hydrogen gas generated when 0.214 g of zinc reacts with hydrochloric acid. Zn(s) + 2HCl(aq) --ZnCl(aq) +H.(8) 2. Calculate the number of moles of hydrogen gas generated if the cudiometer volume is 76.34 mL, the total pressure of H, generated over water is measured to be 755.0 torr, and the temperature is 22.0°C. (Psoat 22.0°C - 19.8 tort) (R = 62.36 L tor/mol K or 0.08206 L atm/mol...
i need help on finding the last information im having trouble with creating a graph from the excel spreed sheet if some one could guide me through the steps, please. What should I place in exc...
i
need help on finding the last information im having trouble with
creating a graph from the excel spreed sheet if some one could
guide me through the steps, please. What should I place in excel to
create the graph when I placed the water bath and temp as well as
HCI added it gives me seprate lines. Thanks in advance.
C. Data Analysis pse of all buret washin You will the titrant heed to provide your data to your...
Mass of Magnesium strip Use the length of your magnesium strip and the mass per m...
Mass of Magnesium strip Use the length of your magnesium strip and the mass per m provided by your TA to calculate the mass of your magnesium strip. Make sure to convert so that your units match! Mass of magnesium strip Moles of magnesium used Convert the mass of each magnesium strip into moles using the molar mass. Moles of magnesium Moles of hydrogen produced (n) Use the mole ratio from the balanced chemical equation to convert the moles magnesium...
Fill in the data sheet and please show your work for the calculations Thermodynamics of Potassium...
Fill in the data sheet and please show your work for the
calculations
Thermodynamics of Potassium nitrate dissolving in water
KNO3(s) ↔
K+ (aq) +
NO3-(aq
Determine the thermodynamic variables, ΔG, ΔH, and ΔS, for the
dissolving of KNO3 in water. You will find these
variables by creating a Van’T Plot, which is a graph of
lnK(sp) vs 1/T.
A set amount of KNO3 is weighed and dissolved in 25mL
of water and heated until all the KNO3 is
dissolved....
Please help me solve these problems, and show your work on the math related ones, thank...
Please help me solve these
problems, and show your work on the math related ones, thank you in
advance!
12. A weatherman reports that the temperature will reach a high of 308.2 K. Your mother is freaking out about the weather report until you show her that 308.2K is equal to ... ^oC 13. If you plot a graph with Fahrenheit temperatures along the vertical axis and the corresponding Celsius temperatures along the horizontal axis, the slope of the will...
Using the Ideal Gas Law (PV = nRT) and the data you gathered in your experiment,...
Using the Ideal Gas Law (PV = nRT) and the data you gathered in your experiment, calculate the number of moles (n) of oxygen (O2) produced in this yeast and hydrogen peroxide reaction. (show your calculation) If you are not sure how to do it, please ask me questions before you submit the assignment. Temp of water: 23 C Room Pressure: 0.99264 atm Initial vol of air: 60 mL Final vol of air (after reaction): 64.5 mL Vol of oxygen...
1.a)The average osmotic pressure of sea water is 30 atm (atmospheres). Calculate the concentration of urea...
1.a)The average osmotic pressure of sea water is 30 atm (atmospheres). Calculate the concentration of urea (CH4ON2) at 25 ° C that exerts the same pressure as seawater. R = 0.082 atm L/ mol K 1.b) There is a 1M solution of CH3COOH (acetic acid) in a total volume of 450 mL. What is the molality (m) of the solution? (ρ solution = 1.15 g / mL).
atm 4 Mass of benker and displaced water 368.910 S Mass of empty beaker 144.502 Mass...
atm 4 Mass of benker and displaced water 368.910 S Mass of empty beaker 144.502 Mass of displaced water (W4 - N5) 224. MRE 7 Barometric pressure 745,mm Hg HO Vapor pressure at 22.0°C 19.8 mm Hg Pressure of H2 (745.0 mm - 19.8 mm) 725.2 mm Hg 10 Pressure of Hy in atmospheres Density of displaced water 0.99823 mL Volume of displaced H2O (mass + density) Volume of H2 - Volume of displaced H2O mL Volume in liters 15...
can you please solve all three questions. TIA The boiling point of water at 1 atm...
can you please solve all three questions. TIA
The boiling point of water at 1 atm is 100°C and the boiling point of ethanol at the same pressure is 78°C. Which one has the higher vapour pressure at a particular temperature? Select one: O They will have the same vapour pressure Ethanol O Water Check In this lab, you will determine the vapour pressure of water or ethanol (P) at various temperatures and use this data to find the enthalpy...
Please can you solve 1 &2 ASAP. Thank you. 1) Calculate the m olality of each...
Please can you solve 1 &2 ASAP. Thank you.
1) Calculate the m olality of each of the following aqueous solutions: (a) 0.940 M KBr solution (density of solution 1.08 g/mL), (b) 29.2 percent by mass NaCl solution, (c) 14.3 g of sucrose (C12H20n) in 676 g of water. 2) The solubility of N2 in blood at 37°C and at a partial pressure of 0.80 atm is 5.6 x 104 mol/L. A deep-sea diver breathes compressed air with the partial...
Gas Laws Pre-Lab Name Section 1. Calculate the number of moles of hydrogen gas generated when 0.214 g of zinc reacts with hydrochloric acid. Zn(s) + 2HCl(aq) --ZnCl(aq) +H.(8) 2. Calculate the number of moles of hydrogen gas generated if the cudiometer volume is 76.34 mL, the total pressure of H, generated over water is measured to be 755.0 torr, and the temperature is 22.0°C. (Psoat 22.0°C - 19.8 tort) (R = 62.36 L tor/mol K or 0.08206 L atm/mol...
i
need help on finding the last information im having trouble with
creating a graph from the excel spreed sheet if some one could
guide me through the steps, please. What should I place in excel to
create the graph when I placed the water bath and temp as well as
HCI added it gives me seprate lines. Thanks in advance.
C. Data Analysis pse of all buret washin You will the titrant heed to provide your data to your...
Mass of Magnesium strip Use the length of your magnesium strip and the mass per m provided by your TA to calculate the mass of your magnesium strip. Make sure to convert so that your units match! Mass of magnesium strip Moles of magnesium used Convert the mass of each magnesium strip into moles using the molar mass. Moles of magnesium Moles of hydrogen produced (n) Use the mole ratio from the balanced chemical equation to convert the moles magnesium...
Fill in the data sheet and please show your work for the
calculations
Thermodynamics of Potassium nitrate dissolving in water
KNO3(s) ↔
K+ (aq) +
NO3-(aq
Determine the thermodynamic variables, ΔG, ΔH, and ΔS, for the
dissolving of KNO3 in water. You will find these
variables by creating a Van’T Plot, which is a graph of
lnK(sp) vs 1/T.
A set amount of KNO3 is weighed and dissolved in 25mL
of water and heated until all the KNO3 is
dissolved....
Please help me solve these
problems, and show your work on the math related ones, thank you in
advance!
12. A weatherman reports that the temperature will reach a high of 308.2 K. Your mother is freaking out about the weather report until you show her that 308.2K is equal to ... ^oC 13. If you plot a graph with Fahrenheit temperatures along the vertical axis and the corresponding Celsius temperatures along the horizontal axis, the slope of the will...
atm 4 Mass of benker and displaced water 368.910 S Mass of empty beaker 144.502 Mass of displaced water (W4 - N5) 224. MRE 7 Barometric pressure 745,mm Hg HO Vapor pressure at 22.0°C 19.8 mm Hg Pressure of H2 (745.0 mm - 19.8 mm) 725.2 mm Hg 10 Pressure of Hy in atmospheres Density of displaced water 0.99823 mL Volume of displaced H2O (mass + density) Volume of H2 - Volume of displaced H2O mL Volume in liters 15...
can you please solve all three questions. TIA
The boiling point of water at 1 atm is 100°C and the boiling point of ethanol at the same pressure is 78°C. Which one has the higher vapour pressure at a particular temperature? Select one: O They will have the same vapour pressure Ethanol O Water Check In this lab, you will determine the vapour pressure of water or ethanol (P) at various temperatures and use this data to find the enthalpy...
Please can you solve 1 &2 ASAP. Thank you.
1) Calculate the m olality of each of the following aqueous solutions: (a) 0.940 M KBr solution (density of solution 1.08 g/mL), (b) 29.2 percent by mass NaCl solution, (c) 14.3 g of sucrose (C12H20n) in 676 g of water. 2) The solubility of N2 in blood at 37°C and at a partial pressure of 0.80 atm is 5.6 x 104 mol/L. A deep-sea diver breathes compressed air with the partial...
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