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Paper pulp produced by kraft/sulphate process is A. bleached easily B. dull white in color C. strong fibrous D. dark colored 2. Claude process of gas liquefaction employs A. merely compression of gas beyond its critical pressure. B. Joule-Thomson expansion cooling. C. heat exchange with colder stream. D. adiabatic expansion against a piston or in a turbine. 3. The main use of HCl is in the A. drilling of petroleum wells and pickling of steel sheets. B. manufacture of cationic detergent. C. treatment of spent fuel of nuclear reactor. D. none of these. 4. The gasification reaction represented by, C + H2O = CO + H2, is a/an __________ reaction. A. exothermic B. endothermic C. catalytic D. autocatalytic 5. Viscose rayon is chemically A. cellulose nitrate B. regenerated cellulose nitrate C. cellulose acetate D. regenerated cellulose acetate
Calculate the molar mass and the molecular formula of the solid. (Ki for diphenl is 8.00'C/m)
How much ammonium hydroxide is needed to react completely with 75.0g of copper (2) nitrate in a double replacement reaction.
Determine the fraction of N2 molecules traveling between 500 and 600 m/sec at room temperature
12.00mL of 0.125M of HCl is required to titrate 21.55mL of Mg(OH)2. Calculate the molarity of the unknown base.
Calculate the pH of the buffer if 2.0 mL of 0.0125 M HCl is added to the buffer prepared in question 3. What is the % change in the pH of the buffer?
A room of volume of 2 cubic meters is initially at 19 C and 101 kPa. A block of dry ice (solid carbon dioxide) is dropped into the room and then the room is sealed (air tight)
Assuming the heat absorbed by the styrofoam is negligible, calculate the expected final temperature. The specific heat of water is 4.184 J g-1 K-1.
What is the total pressure (Ptot) in the container in torr? What is the partial pressure of argon (Par) in the container in torr?
Calculate the number of moles of solute present in each of the following solutions.
Find the pH of the equivalence point and the volume (mL) of 0.0740 M KOH needed to reach the equivalence point in the titration
What molar ratio of benzoate ion to benzoic acid would be required to prepare a buffer with a pH of 5.20? [Ka(C6H5COOH) = 6.5 * 10-5]
given the balanced equation representing a reacction: 2C2H6+7O2=4CO2+6H2O determine the total number of moles of oxygen that react completely with 8.0 moles of C2H6
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