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The electrical conductivity of titanium is approximately 2500 times greater than that of silicon. Titanium has a hexagonal close-packed structure, and silicon has the diamond structure. Explain how the structures relate to the relative electrical conductivities of the elements.
The reactant concentration in a zero-order reaction was 9.00×10^-2 M after 100s and 2.50×10^-2 M after 390s . What is the rate constant for this reaction
Show how all four hydrogens in sodium borohydride can act as a reducing agent hydride. What is the minimal amount of NaBH4 is needed for reduction of 1 mole of aldehyde.
Gasohol contains ethanol (C2H5OH) which when burned reacts with oxygen to produce CO2 (g) and H2O(g). How much heat is produced when 12.5 grams of ethanol burns.
In the conversion of glucose to pyruvate, how many of the actual steps involve electron transfer
gas evolution frequency is observed during the seperatory funnel extractions in this experiment. What is the identity of this gas and how is it formed?
Ozone (O3) can be prepared in the laboratory by passing an electrical discharge through a quantity of oxygen gas (O2): 3 O2 (g) -------> 2 O3 (g) A 10.00-L evacuated steel vessel is filled with 32.00 atm of pure O2 at 25°C.
Explain what Carboxylic acid is produced from the acid hydrolysis of butyl acetate butyl ethanoate? Draw it out.
The heat required to raise the temperature of a large cup of water (for coffee) from room temperature to boiling is approximately 100 kJ. Express this quantity of heat in kilocalories and British thermal units.
What is the pH of a solution made by adding 6.21 grams of sodium fluroide, NaF, to 391 mL of 0.317 M hydrofluoric acid, HF? (Assume no change in volume takes place.)
Calculate the maximum number of moles and grams of H2S that can form when 152 g aluminum sulfide reacts with 147 g water.
What are some sources of errors that are associated with standardizing a solution/titration, how can these errors be prevented
Kc = 9.7 at 900 K for the reaction NH3(g) + H2S(g) --> NH4HS(s) If the initial concentrations of NH3(g) and H2S(g) are 2.0 M, what is the equilibrium concentration of H2S(g)?
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