Question 9 (1 point) When alcohol and water mix, there is no evidence of a chemical...
Question 7 (1 point) The pressure drop per unit length of a smooth-walled pipe, through which water at 15.6 C is flowing, is to be determined with a 1:3 scale model. The velocity of the water is 0.1 m/s. The model fluid is ethyl alcohol at 20 C. What is the required velocity of ethyl alcohol to maintain dynamic similarity. (Water: density 999 Kg/mA3, Dynamic viscosity-1.12E-3 N.s/mA2- Alcohol: density 789 Kg/mA3, Dynamic viscosity -1.19E-3 N.s/m*2) Discussion: Why would you use...
Which of the following compounds has the highest boiling point? 34.6°C 78.3°C 100°C 800 760 Normal boiling point 600 Vapor pressure (tor) Diethyl ether Water 400 Ethyl alcohol (ethanol) 200 Ethylene glycol 0 20 80 100 40 60 Temperature (°C) Select one: a. NH3 O b. H₂S о с. НСІ O d. H₂O According to the MO theory, which of the following molecules should not exist? Select one: a. Hez b. Hez c. H2 d. All of the above
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 Water O They will have the same vapour pressure O Ethanol Check
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 O Water O Ethanol Check
(1 point) Two chemicals A and B are combined to form a chemical C. The rate of the reaction is proportional to the product of the instantaneous amounts of A and B not converted to chemical C. Initially there are 63 grams of A and 100 grams of B, and for each gram of B, 2 grams of A is used. It has been observed that 40.75 grams of C is formed in 10 minutes. How much is formed in...
(1 point) Two chemicals A and B are combined to form a chemical C. The rate of the reaction is proportional to the product of the instantaneous amounts of A and B not converted to chemical C. Initially there are 100 grams of A and 48 grams of B, and for each gram of B, 1.6 grams of A is used. It has been observed that 37 grams of C is formed in 10 minutes. How much is formed in...
Question 16 (1 point) Which substance below has the weakest intermolecular forces? BY2, AHvap=29.2 kJ/mol A2X, AHvap= 41.2 kJ/mol C3X2, AHvap= 33.2 kJ/mol DX2, AHvap= 25.2 kJ/mol EY3, AHvap= 20.5 kJ/mol Question 3 (1 point) The spheres below represent atoms of Si, Ge,C, and Sn (not necessarily in that order). r=110 pm - 140 pm T-75 pm (a) r=120 pm (c) Which one of these spheres represents an atom of Si? sphere (c) sphere (b) sphere (a) sphere (d) KYC...
1. Eugenol (clove oil) has a reported boiling point of 255° C at 760 mm Hg. When making a determination of the boiling point at reduced pressures during vacuum distillations, a nomography chart can be used o determine the corrected boiling point. What would be the boiling point of Eugenol at 25 mm Hg? NOMOGRAPH 2. Aliquid mixture contains two substances whose boiling points are only 10°C apart. Which method of distillation should be utilized to obtain a clean separation...
explain question 6 please explain question 8 not 6 Mix 9 mL of water + 1 uL of DNA Mix 1 mL of water+9 mL of DNA QUESTION8 You make a 1:50 dilution of yoqr stock, then you make a 1:10 dilution of the 1:50. What is the dilution factor of the final solution? 1:100 ○ 1:500 1:10 1:5 QUESTION9 0.1 mL Click Save and Submit to save and submit.Click Save All Answers to save all answers Save All Answers...
Part A H,0 (100°C) has a higher boiling point than CH, OH (65°C). There are more hydrogen bonds between water molecules than between alcohol molecules. There are less hydrogen bonds between water molecules than between alcohol molecules. CH, OH has the higher molecular mass than H,O. There are no hydrogen bonds between alcohol molecules while there are plenty of them between water molecules. O Submit Previous Answers Request Answer X Incorrect; Try Again; 2 attempts remaining Part B H,O (100°C)...