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describe and explain the possible effect on your results of the following experimental errors or variations. a) you added only enough 3 M H2SO4 to bring the pH down to 4. b)your reaction mixture had
An object with a mass of m = 4.6 kg is attached to the free end of a light string wrapped around a reel of radius R = 0.265 m, determine the velocity when it hits the floor
What are the Distillation ranges and Retention times of Acetone, 2-butatnone, 2-pentanone, and 2-hexanone
The endpoint of the titration is surpassed. How will this techinque error affect the reported percent avilable chlorine in the bleach sample- too high or too low. Explain.
Sulfuric acid is mixed with aqueous sodium hydroxide to produce water and sodium sulfate. Liquid C6H12 is burned in air.
what is the representation of the transitition state for the rate determing step in the reaction of tert-butyl alcohol with HBr
identify the species formed in the first step in the acid-catalyzed dehydration of 1-Methylcyclohexanol
A cylinder of gas is at room temperature (20°C). What is the new pressure of the gas relative to its initial pressure
A box is at rest on a horizontal table. Is it because of the first law, second law, and or third law of motion that those two forces are equal
which of the following alcohols undergoes dehydration at the fastest rate on being heated with sulfuric acid? a) 1-Butanol b)2-Methyl-1-butanol c)2-Methyl-2-butanol d)3-Methyl-1-butanol e)3-Methyl-
which group has the highest rank when precedence is assigned according to the Cahn Ingold prelog system
A rotating wheel requires 3.09-s to rotate through 37.0 revolutions. calculate the constant angular acceleration of the wheel
Rank the following organic molecules from lowest to highest boiling point. Use the letters A, B, C to identify each molecule in the list and use the appropriate <, =, or > symbol to separate s
A hydrogen atom is in its second excited state (n = 3). calculate angular momentum of the electron
Lead is a toxic metal that affects the central nervous system. A Pb-contaminated water sample contains 0.0011% Pb by mass. How much of the water (in mL) contains 150 mg of Pb. The density of the sol
A college student produces about 135 kcal of heat per hour on the average. What is the rate of energy production in watts
Another Reaction, A -> Products, is a first order reaction. An experiment was performed at 25C which determined the rate constant is 0.015min^-1. THe activation energy of this reaction is +34.8kJ
A 800kg , light-weight helicopter ascends from the ground with an acceleration of 3.50m/s2. What is the work done by the gravitational force
An electric motor with a 4.7-hp output drives a machine with an efficiency of 30%. What is the energy output of the machine
Describe the effect that the following procedural changes would have on the percent recovery of acetanilide. Rather than adding 0.5ml portions of boiling solvent to acetanilide, student added 5ml po
A car with a mass of 980 kg is initially traveling east toward an intersection with a speed of vc = 20.8 m/s, Determine the initial speed of the truck and the final speed of the wreckage
A 1200kg automobile travels at 90km/h. What is its kinetic energy? What net work would be required to bring it to a stop
A 800kg , light-weight helicopter ascends from the ground with an acceleration of 3.50m/s2. What is the work done by the net force on the helicopter?
A wire 6.10m long with diameter of 2.00mm has a resistance of 0.0280?. Find the resistivity of the material of the wire
For the Reaction CO(g) + Cl2(g) -> COCl2(g), the rate constant increases 1500 times when the temperature rises from 150C to 250C. Calculate the activation energy, in kJ/mol, for this reaction. As