Reference no: EM13530725
In an experiment the stoichiometry of potassium chlorate will be investigated to use the results to analyze a potassium chlorate-potassium chloride mixture. Potassium chlorate is a compound containing the elements potassium, chlorine, and oxygen. When heated strongly, the compound decomposes and all oxygen can be driven off. The potassium and chlorine remain as the product potassium chloride, for which the formula is KCl. When a mixture of potassium chlorate and potassium chloride is heated, the mass loss due to oxygen evolved from the potassium chlorate enables you to calculate how much potassium chlorate was present in the original mixture. To speed the rate at which the decomposition occurs, manganese dioxide is used as a catalyst. The mass of the manganese dioxide remains constant.
After the second part of this experiment is done (part B), if you found the following data:
-the mass of test tube plus the catalyst
-the mass of test tube and catalyst plus the unknown mixture
-the mass of test tube and catalyst plus residue
-the mass of the unknown mixture
-the mass of oxygen lost
-the number of moles of oxygen atoms evolved
-the number of moles of potassium chlorate decomposed
-the mass of potassium chlorate in the original sample
how would you find from this data:
-the percentage weight of potassium chlorate in the unknown mixture
|
Calculate the magnitude of the impulse
: A 0.5 kg brick is dropped from a height of 9.0 m. It hits the ground and comes to rest. What is the magnitude of the impulse exerted by the ground on the brick
|
|
Define the net ionic equation for the precipitation reaction
: If an unknown substance with the formula Ba(subscript x)Cl(subscript y)•(variable z)H(subscript 2)O was added to water and Na(subscript 2)HPO(subscript 4), the precipitate formed is Barium phosphate. What is the net ionic equation for this precipi..
|
|
A sulfur trioxide is industrial production of sulfuric acid
: Sulfur trioxide is used in the industrial production of sulfuric acid. The industrial and natural conversion of sulfur dioxide to sulfur trioxide can be represented by the following reaction
|
|
Evaluate the voltage of the voltage source
: A 330 ohm (330 ?) resistor is connected to an unknown voltage source. The Voltage- Current Sensor measures a current of 0.50 amps (0.50 A). What is the voltage of the voltage source
|
|
Examine potassium chlorate-potassium chloride mixture
: In an experiment the stoichiometry of potassium chlorate will be investigated to use the results to analyze a potassium chlorate-potassium chloride mixture. Potassium chlorate is a compound containing the elements potassium
|
|
What was the balls direction of motion when caught
: Baseball and the Washington Monument On August 25, 1894, Chicago catcher William Schriver caught a baseball thrown from the top of the Washington Monument, What was the ball's direction of motion when caught
|
|
What is the vehicles maximum acceleration
: A rear-wheel-drive car supports 44% of its weight on its two drive wheels and has a coefficient of static friction of 0.80. What is the vehicle's maximum acceleration
|
|
Explain and explain the possible effect
: Describe and explain the possible effect on your results of the following experimental errors or variations. You reaction mixture had an oily later on top when you added the 3 M sulfuric acid.
|
|
How much idle time was incurred by the washing process
: In what order should the cars be processed through the facility that is the most efficient overall - how long from start to finish will it take to complete the processing the five cars?
|