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Calculate the expected yield of a reaction where 42.0g of Magnesium reacts with 87.0g of Bromine to produce Magnesium Bromide
During a molar volume of oxygen experiment indicate how each of the following errors would affect (increase, decrease, or no change) your calculated value for the molar volume of O2 at STP.
how many moles of hydrogen gas (H2) can be liberated from 104 mol of magnesium hydride if the process operates on 77% efficency?
A 50.0 mL sample of 0.55 M benzoic acid, C6H5COOH, a weak monoprotic acid, is titrated with 0.47 M NaOH. Calculate the pH at the equivalence point. Ka of C6H5COOH = 6.5 10-5
describe the error that has occured; that is, is the mass of the anhydrous salt remaining in the crucible reported as being too high or too low? explain.
A 35.00 mL solution of 0.2500 M HF is titrated with a standardized 0.1978 M solution of NaOH at 25 C. a) What is the pH of the HF solution before titrant is added. b) How many milliliters of titrant are required to reach the equivalent point
Write the chemical equation for the reaction of the basic ion with water to produce hydroxide ion. 1. NaC2H3O2 2. NaHCO3 3. Na2CO3 4. NH4Cl
What is the percent yield for iron if the reaction of 65.0 of iron(III) oxide produces 45.0 of iron if Iron(III) oxide reacts with carbon monoxide to produce iron and carbon dioxide.?
How might you use 13C NMR spectroscopy to determine if the brominated product is contaminated with some unreacted starting material (during the bromination of trans-cinnamic acid)
Diamond and graphite are two crystalline forms of carbon. In which form are the bonds between the C atoms arranged at tetrahedral angles to each other? 1. diamond 2. Neither of these 3. graphite
The rate constant (k) for a reaction was measured as a function of temperature. a plot of ln k versus 1/T is line and has a slope of -7445K. Calculate the activation energy for the reaction
suppose a snack bar is burned in a calorimeter and heats 2000 g water by 20 degc. how much heat energy was released?
Using the reaction 2C6H6+15O2--->12CO2+6H2O, what volume of carbon dioxide will be produced when 128.0 grams of benzene react.
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