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Question - Define redox reactions and redox potantial. Write the symbol for redox potential. What is its importance in respiratory chain?
Many home barbeques are fueled with propane gas C3H8 What mass of carbon dioxide (in kg}) is produced upon the complete combustion of 18.9 { L} of propane (approximate contents of one 5-gallon tank)
What is meant by the term reaction rate? Name three factors that can affect the rate of a chemical reaction. Is the rate of disappearance of reactants always the same as the rate of appearance of products? Explain.
A black precipitate remaining from the separation of Cr3+ and Fe2+ ions from Ni2+ ion is dissolved in HCl and HNO3. Some NH3 is added, followed by several drops of dimethylglyoxime.
If a sample of pure silver (Ag) contains 3.35 x 1022 atoms of silver, how many moles of silver are in the sample?
Question- What mass (in grams) of iron(III) oxide contains 47.3g of iron? Iron(III) oxide is 69.94% iron by mass.
Then 41.44 g of water, with an initial temp of 76.9 degrees celcius, was added to the calorimeter. The final temperature of the water in the calorimeter was 22.9 degrees celcius. what is the heat capacity of the calorimeter
Then, in 5.0 more seconds, the boat's speed is 18 m/s. What is the boat's average acceleration for the total time?
Butyric acid is responsible for the foul smell of rancid butter. The pKa of butyric acicd is 4.84.
Calculate the wavelengths of the following objects: a) a muon(a subatomic particle with a mass of 1.884x10^-25 g) traveling at 3.00x10^2 m/s
Calculate the pH of a solution made from dissolving 1.00 moles of benzoic acid with 1.00 moles of sodium benzoate in enough water to make 750ml of solution.
Calculate w (in kJ) when 538 g iron (III) oxide (MM = 159.7 g/mol) reacts with excess carbon to produce carbon dioxide gas at 479 K: 2Fe2O3(s) + 3C(s) ? 4Fe(s) + 3CO2(g)
Assign each species to the expression that most accurately describes the basic units of that substance.
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