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A piece of sodium metal reacts completely with water as follows.
2 Na(s) + 2 H2O(l) 2 NaOH(aq) + H2(g)
The hydrogen gas generated is collected over water at 25.0°C. The volume of the gas is 420 mL measured at 1.00 atm. Calculate the number of grams of sodium used in the reaction. (Vapor pressure of water at 25°C = 0.0313 atm.)
Calculate the volume in mL of a 1.420 M NaOH solution required to titrate the following solutions.
(a) 40.00 mL of a 2.430 M HCl solution(b) 25.00 mL of a 6.500 M H2SO4 solution(c) 75.00 mL of a 1.500 M H3PO4 solution
An unknown gas effuses through a porous barrier at a rate that is 0.752 times the rate of Ar (g) under the same conditions. Which of the following is the unknown gas. Cl2 (g) He (g) O2 (g) N2 (g) H2 (g)
what is the maximum number of grams of [Co(NH3)6]Cl3 that can be produced?
Show that you can selectively precipitate ONLY AgBr at a concentration of Ag of 5.5x10^-10 M in a solution that contains both Br- and CI- at a concentration of 0.02M.
Arrange the following compounds in order of increasing acidity: Benzenethiol, cyclohexyl mercaptan, cyclohexanol
A gaseous mixture contains 450.0 Torr of H2(g), 358.7 Torr of N2(g), and 65.1 Torr of Ar(g). Calculate the mole fraction, X, of each of these gases.
How will you find the equilibrium contant between the reaction of the strong acid and base? Help please
Ammonium Hydrogen sulfide decomposes on heating, NH4HS(s) NH3 (g)+H2S(g). If Kp for this reaction is .11 at 25 degrees celcius (where partial pressures are measured in atmospheres), what is the total pressure in the flask at equilibrium
25 cubic centimetres of potassium hydroxide solution were neutralized by 24.0 cubic cenimtre of 1M per decimetre hydrochloric acid. what is the concentration in molar per decimetre of alkali?
Calculate the amount of heat [kcal] released when 50.0 g of steam at 100 °C hits the skin, condenses, and cools to a body temperature of 37 °C.
A solution of salt (molar mass 90 g mol -1) in water has a density of 1.29 g/mL. The concentration of the salt is 35% by mass.
(a) How many stereoisomers are possible for 1-methyl-1,2-cyclohexanediol? (b) Name the stereoisomers formed by oxidation of 1-methylcyclohexene with osmium tetroxide. (c) Is the product formed in step (b) optically active
how many atoms of oxygen per second are colliding with each square centimeter of the surface? The residual gas in the system has the same composition as air, and the temperature is 295K
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