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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
Common oxidation states of mercury are 1 and 2. In the 1 oxidation state, mercury forms a diatomic cation. In the 2 oxidation state, mercury is a typical monatomic cation.
Calculate the pH of a buffer solution with .10 moles of C2H5COOH and .13 moles of C2H5COONa in 1.5L
To make strawberry jam, crushed strawberries and sugar are mixed in a 45:55 mass ratio, and the mixture is heated to evaporate water until the residue contains one-third water by mass. Calculate how many pounds of strawberries are needed to make a..
Sodium atoms emit light with a wavelength of 330 nm when an electron moves from a 4 p orbital to a 3 s orbital. What is the energy difference between the orbitals in kilojoules per mole?
95.0 mL of H_2O is initially at room temperature (22.0C). A chilled steel rod at 2.0C is placed in the water. If the final temperature of the system is 21.5C, what is the mass of the steel bar?
Calculate the molarity of hypochlorite ion in a commercial bleach solution. It contains 5.25% sodium hypochlorite by mass and the density ofthe solution is 1.08 g/mL.
Explain the difference in acidity between p-cyanoanilinium ion and anilinium ion with words and structures.
Draw a diagram showing the hydrogen bonding of an ammonia molecule with two other ammonia molecules. (Draw complete Lewis structures.
A solution is made by dissolving 0.100 mols of NaOCl in 100.0 mL of water. The Ka of hypochlorous acid (HClO) is 3.0*x10^-8 at 25.0 C. a.) Write any relevant chemical equations or equilibrium reactions.
What volume of O2 at 684 mmHg and 21 degree celsius is required to synthesize 25.0 mole of NO?
According to the following reaction, what volume of 0.244 M KCl solution is required to react exactly with 50.0mL of 0.210 M Pb(NO3)2 solution?
What main type of intermolecular attraction would you expect for cl2c0?
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