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When a 0.66g sample of olive oil is burned in a calorimeter, the heat released increases the temperature of 370 g of water from 22.7 degrees Celcius to 38.8 degrees Celsius. What is the energy value for the olive oil in kJ/g and kcal/g.
Question- What is the percent yield of water if 0.90 g of water is obtained when 29.0 g of butane is burned in excess oxygen
Phenol is a weak organic acid with Ka=1.0x10^-10. How many grams of phenol do you need to add to 500. mL of water to make a pH=5.75 solution
a particular radioactive isotope has a half-life of 15.0 days. if you have 18.3 mg of the isotope at the beginning of
Calculate ?Sºf for oxalic acid and ?Sº for the combustion of one mole of oxalic acid. c) Calculate ?Gºf for oxalic acid and ?Gº for the combustion of one mole of oxalic acid.
Calculate the density of a cube of unknown mental which weighs 38g and has a side of length 4cm.
How much energy is required to decompose 765 g of PCl3, according to the reaction below? The molar mass of PCl3 is 137.32 g/mol and may be useful.
The MnO4(-) is often used to analyze for the Fe(2+) content of an aqueous solution via the reaction MnO4(-) + Fe(2+) ---> Fe(3+) + Mn(2+) in acidic solution. What is the ratio of Fe(2+):MnO4(-) in the balanced equation
Outline the reaction mechanism of 3-methylcyclopentene with water and sulfuric acid catalyst.
What is the pH at the stoichiometric point? What is the pH when 105% of the base required to reach the stoichiometric point has been added?
How many different signals are expected for this molecule? That is, how many magnetically different hydrogens are present in the molecule? This is in general determinted by differences in bonding, and distance to an electronegative group.
Solving this question helps the student to understand how to find the limiting reactant and how much product is produced and What mass of product may be produced?
what are the electronic configurations of Pb and Pb2+, also Mo and Mo2+. please explain what are their valence electrons.
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