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A researcher studying the nutritional value of a new candy places a 6.90g sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.39 °C. If the heat capacity of the calorimeter is 33.90 kJ⋅K-1. How many nutritional Calories are there per gram of the candy?
Define what kind of redox reaction each reaction below is. Identify the oxidizing and reducing agents
Consider a solution containing 3.70 mM of an analyte, X, and 1.99 mM of a standard, S. Upon chromatographic separation of the solution peak areas for X and S are 3979 and 10035, respectively.
Magnesium (Mg) emits two very closely spaced lines in the green at 617 nm and 618 nm. A) Which of the two lines is associated with large energy photon? ____nm B) Which of the two lines has a larger frequency? ____nm
What is a chemically reasonable reaction that is stereospecific but not stereoselective
Determine the order of the reaction using appropriate plots and discussion.
What is the molar mass of the unknown gas? Express your answer to four significant figures and include the appropriate units.
if i have 0.621 mole of potassium chlorate that decomposes by heat, what is the amount of the oxygen in moles?
elemental sulfur occurs as octatomic molecules s8. what mass of fluorine gas is needed for complete reaction with
Compute the number of moles of each reactant. Find out the limiting reactant in each of the following three reactions.
a 0.6407 g sample containing chloride and iodide ions gave a silver halide precipitate weighing 0.4430 g. this
The densities of methanol and water at this temperature are 0.782 g/mL and 1.00 g/mL, respectively. For this solution, calculate each of the following: molarity, molality, percent by mass, mol fraction, and mol percent.
find the fraction of a Gaussian population within the following boundaries
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