Fluid Flow-3

The following data was obtained in NASA chemical lab.Temperature (C) Solubility (x 10-21)10 1715 2120 3825 4130 4935 5340 5945 6950 7855 8660 95 Find: the equation Solubility [x10-21] = f(Temperature [K]). Provide the graph withcorresponding labels.

A bloodhound, with an acute sense of smell, sits at one end of a long, unventilated corridor.At the other end of the corridor a small amount of an aerosol is released containing the volatile, fragrant compounds: acetaldehyde (C2H4O) jasmine lactone (C10H16O2) acetoin (C4H8O2) hexyl acetate (C8H16O2) 1-octen-3-one (C8H14O) Rank the compounds in the chronological order they are detected by the hound.       1-octen-3-one       acetoin       jasmine lactone       hexyl acetate       acetaldehyde

Solve both as they are subparts and get like. Hand written solutions are strictly prohibited.

A sample of warm moist air (100 % relative humidity) is collected in a container at p = 759.9 Torr and T = 30.0 oC. The vapour pressure of water at this temperature is 31.8 Torr. Find the concentration in grams per litre of water vapour in the original air sample.

Consider the following scenario: a small amount of a solid got into a sample when preparing the capillary tube to determine its melting point. The student decided to take the melting point anyway. The student observes the following: (a) a sharp melting point (<2oC); (b) a melting point that closely matches the literature reported value. Which of the following conclusions will not be justified by the experimental results. The solid was a soluble impurity in the liquid phase. The solid was an insoluble impurity in the liquid phase. The solid was a sample of the same compound.

1. A piece of metal "X" weighing 0.0382 g was placed in an eudiometer containing dilute aqueous HCI. After the metal fully dissolved,15.4 mL of hydrogen gas was collected by displacement of water and a 400 mm column of water was observed. The water temperature was 25 degrees Celcius and the barometric pressure was 758.8 mm Hg (torr). Refer to the introduction and data sheet to solve the following problems. a) Calculate the volume occupied by the hydrogen gas at STP. b) How many moles of the metal were consumed in the reaction? c) What is the molar mass of the metal?

Ethanol vapours were allowed to completely fill a large jug with a volume of 15.5L.  The ethanol was burned yielding 5.5mL of pure liquid water in the bottom of the jug at the end of the reaction.   C2H5OH   +   3 O2  ?     2 CO2   +    3 H20 If the room temperature was 21.5 oC and the pressure was 0.996atm, calculate the percentage yield of the water gathered in the jug.

4. Consider the mass% hydrogen peroxide experiment Catalase 2H,02(aq) 2H20(1) + 02(g) 3.00mL of a hydrogen peroxide solution is used in this experiment and 36.00mL of oxygen gas is trapped in the apparatus. The air temperature is 23.0°C. What is the mass% of H202 in the solution?

a. Ethanol vapours were allowed to completely fill a large jug with a volume of 15.5L.  The ethanol was burned yielding 5.5mL of pure liquid water in the bottom of the jug at the end of the reaction.   C2H5OH   +   3 O2  ?     2 CO2   +    3 H20 If the room temperature was 21.5 oC and the pressure was 0.996atm, calculate the percentage yield of the water gathered in the jug.    b. A 10.0 mL sample of sulfuric acid with an unknown concentration was titrated with 3.5 x 10-4 mol/L NaOH.  If 20.4mL of the sodium hydroxide was required to completely neutralize the acid, determine the concentration of the sulfuric acid in the sample.  Then, determine the original pH of the sulfuric acid sample

Z = [2(σP)/kT][8RT/pi(M)]1/2 2A. Based on the kinetic theory of gases, collision frequency is related to temperature, pressure and molecular cross section. Explain conceptually and based on the equation how the collision frequency is related to pressure.  2B. How does collision frequency relate to temperature. 2C. Sketch a plot of the relationship between collision frequency and temperature. Label your axes.

One technique for studying the energetics of protein structure is to monitor the struc- ture of the protein as a function of the osmotic pressure. In these experiments the os- motic pressure of the solution is varied by using polymers of different molecular weight and concentration. In an experiment poly(ethylene glycol) (PEG) with a molecular weight of 1000.0 g mol- was used. What concentration of PEG is needed to create an aqueous solution with an osmotic pressure of 150.0 Pa at 25°C? You may assume that PEG is uncharged and that it does not dissociate or aggregate.

Constants Periodic Table The hydrogen gas formed in a chemical reaction is collected over water at 30.0 °C at a total pressure of 728 Torr. Part A What is the partial pressure of hydrogen gas collected in this way? (Vapour pressure of water at 30.0 °C is 31.844 Torr.) Express your answer in torrs to three significant figures. ΑΣφ ? PH, = Torr

Hydroxyapatite, Ca₁0 (PO4) 6 (OH)2, has a solubility constant of Ksp = 2.34 x 10-59, and dissociates according to Ca10 (PO4)(OH)2(s) = 10 Ca²+(aq) + 6 PO¾-¯(aq) + 2 OH(aq) Solid hydroxyapatite is dissolved in water to form a saturated solution. What is the concentration of Ca²+ in this solution if [OH] is fixed at 3.60 × 10-4 M? [Ca2+] = M

show-all-working-explaining-detailly-each-step Answer should be typewritten using a computer keyboard

12:50 ← d2fcc1b0-17ba-42ff-a... 15/24 SCIENCE (086) 9 જે SCIENCE 224 Science Project Create a comprehensive and informative project on ' Natural resources' in the form of an artistically crafted, decorated project file Include pictures, illustrations,examples, surveys, advertisements, newspaper cuttings and headings etc in your project to make your project appealing, relevant, easy to understand and memorable Keypoints . Introduction to Natural Resources • Air pollution and its causes Water pollution and its causes Soil pollution and its causes . Biogeochemical Cycles 1. Oxygen Cycle 2. Carbon Cycle 3. Nitrogen Cycle 4. Water Cycle Rain and effect of acid rain . Green-house Effect Ozone Layer and reason for ozone depletion Assignment Sheet 1.Look at Fig. 1.1 and suggest in which of the vessels A,B, C or D the rate of evaporation will be the highest? Explain. PDF to Long Images PDF to Images =

The diagram below shows some isotherms of water. (a) S Estimate values for the critical constants and the van der Waals constants a and b for this gas. (b) Using the information from part (a), estimate the radius of a water molecule. Compare to the value of 1.37 A obtained from interpolation of ionic radii (Y. Zhang and Z. Xu, American Mineralogist 80 (1995) 670-675). PIMPa C 8 15- 10- M 50 400°C 374°C 350°C 300°C 425°C 450°C 275°C 100 150 200 250 300 350 Vicm mole 400 500

Write balanced net ionic equation for KOH(aq)+HC2H3O2(aq)→H2O(l)+KC2H3O2(aq). Express your answer as a chemical equation. Identify all of the phases in your answer.

Soil vapor extraction (SVE) is used to remove volatile or-ganic pollutants, such as chlorinated solvents, from soil at haz-ardous waste sites. Vent wells are drilled, and a vacuum pump is applied to the subsurface. (a) How does this remove pollutants?(b) Why does heating combined with SVE speed the process?

5 moles of Methane and 20 moles of Ethane were mixed in a container.The mole fraction of Methane is O 25 O 30 O 0.2 O 5

4. Calculate the mass of oxygen (in mg) dissolved in a container of 5.00L of water exposed to a pressure of 1.13atm of air. Assume that the molar fraction of oxygen in the air is 0.21 and Henry's constant for oxygen in water at that temperature is 1.3 x 10-3 M/ atm. al49.4.mg bl.23.5 mg c) 9.87 mg d1.27.3. mg e) 13.7 mg

Why the oscillating plots in the CO2 isotherm at temperature below Tc are considered to violate Boyle’s law?

6. Show the step-by-step process. Do not use shortcut methods. Make it as detailed as it can be. ENCODE THE ANSWER.

Ethanol vapours were allowed to completely fill a Culligan jug with a volume of 18.9L.  The ethanol was burned yielding 9.6mL of LIQUID water in the bottom of the jug.  C2H5OH + 3 O2 --> 2 CO2 + 3 H20 If the room temperature was 23.5 oC and the pressure was 97.5KpA, calculate the percentage yield of the water gathered in the jug. (density of water = 1.00 g/mL) - 24% - 76% - 17% - not enough information

a) Calculate the volume (in L) occupied by 16 g of Carbon dioxide gas at a pressure of 99.7 x 103 Pa and a temperature of 100°C. (R= 8.314 JK1 mol-¹). What assumptions have you employed with this calculation? b) Predict whether the following liquid-liquid mixtures are miscible and explain your answer. c) 1. CH3NH3 and CH3CH2CH₂CH2CH₂CH₂CH₂CH3 ii. CH3CN and H₂O For the following pairs of functional groups, predict which would likely have the higher boiling point and justify your answer. i. Alcohol and Ketone ii. Ether and Aldehyde

You carry out an experiment on the physical properties of 3 organic compounds and observe the following data: Substance Solubility in Water medium Compound A low Compound B high Compound C You know that the 3 organic compounds are an alkene, ketone and alcohol of equal hydrocarbon length. Match the compounds above to their specific organic compound type based upon their solubility. And give a structural reason for the solubility observations that are observed. Substance Identity Reason Compound A Compound B Compound C

Calculate the mass of dissolved nitrogen at 25°C in an aquarium containing 73.4 L of water. Assume that the total pressure is 98 kPa and that the mole fraction of nitrogen in air is 0.78.It is recalled that the partial pressure of a gas in a gas mixture can be determined from the total pressure and its mole fraction (Dalton's Law).