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If replacing magnesium with an equal weight of sodium, how would the enthalpy of the reaction changed? Reason?
How many liters of O2 are needed to react completely with 45.0L of H2S at STP? 2H2S(g) + 3O2(g) -> 2SO2(g) +2H20(g)
A solution containing the thiourea complex of bismuth (III) has a molar absorptivity of 9.32*10^3 l/mol*cm at a wavelength of 470 nm
What NaCl concentration results when 299 mL of a 0.820 M NaCl solution is mixed with 407 mL of a 0.450 M NaCl solution? When heated, KClO3 decomposes into KCl and O2
Acetylene, C2H2, will burn in the presence of oxygen. 2C2H2(g)+ 5O2(g) -> 4CO2(g)+ 2H2O(g) how many grams of water can be produced by the reaction of 2.40 mol of C2H2 with 7.4 mol of O2?
Calculate the final temperature of 37 mL of ethanol initially at 11 degrees C upon absorption of 624 J of heat. (density of ethanol =0.789 g/mL).
what is the mass of iron in grams in the sample? a. 0.000904 g b. 0.0559 g c. 0.904 g d. 1.105 g e. 55.85 g
From the same container under the same conditions--same temperature and initial pressure, it takes 385 s for 7.00 L of O2 gas to effuse. Calculate the molar mass (in grams/mol) of the unknown gas.
A student placed 18.0 of glucose () in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100. mark on the neck of the flask was reached.
When 79.272 cg of nitrogen gas is reacted with 79.272 cg of hydrogen gas, how many grams of ammonia are formed?
The ester ethyl p-nitrobenzoate is more reactive towards nucleophilic acyl substitution than ethyl p-methyoxybenzoate.
What percentage of the Sr-90 that was formed in the detonation of the first fission bombs in August 1945 is still present in the environment in August 2032?
when a stip of zinc metal is placed in a blue aqueous solution of copper (II) sulfate, the surface of the zinc becomes coated with a reddish solid, and the zinc begins to dissolve to form aqueous zinc sulfate. Which of the following statements reg..
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