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A motorboat is pointed due south, and its motor gives the boat a constant speed of 5.00 m/s through still water. Find the magnitude and direction of the boat's total velocity
By what percentage does a dilute aqueous solution expand when heated from 15 degrees to 25 degrees C? If a 0.5000M solution is prepared at 15 degrees C, what would molarity be at 25 degrees C?
Determine the pH of a solution with .12M of sodium acetate at 25 degrees C. Ka=1.8x10^-5
In a certain industrial process involving a heterogenous catalyst, the volume of the catalyst (in the shape of a sphere) is 10.0cm cubed. If teh sphere were broken down into eight spheres each havin
Having a really hard time with differentiating between endothermic and exothermic processes. A clearer explanation would be great. I don't understand what the difference is between a gas to a liquid
What is the difference between an Indicator electrode and a Reference electrode in a potentiometric titration
Calculate the pH at 25 degree C of .25 aqueous solution of phosphoric acid (H3PO4). (Ka1,Ka2, and Ka3 for H3PO4 are 7.5x10^-3, 6.25x10^-8 and 4.8X10^-13
Calculate the mass of Nitrogen (N2) that will react completely with 6.00g of Hydrogen (H2) to form Ammonia, via the reaction: N2+3H2=2NH3
The pH of an acidic solution is 5.71. Calculate the Ka for the monoprotic acid. The initial acid concentration is .010M of
Calculate the mass of Nitrogen (N2) that will react completely with 6.00g of Hydrogen (H2) to form Ammonia. Via the Reaction: N2+3H2=2NH3
Consider the electronic transition from n = 2 to n = 4 in a hydrogen atom and select the correct statement below.
Describe in detail how you would prepare a solution with a concentration near 0.10 M from a 0.650 stock solution. Calculate the final concentration of the diluted solution. It should be within 10% o
Nitrogen dioxide decomposes according to the reaction. kp=4.48X10^-13 at a given temperature. If 0.6 atm of NO2 is added to a container and allowed to come to equilibrium. What are the equilibrium p
At 25 C the density of water is 0.997 g/cm^3, whereas the density of ice at -10 C is 0.917 g/cm^3. if a plastic soft-drink bottle (volume=250mL) is filled with pure water capped and then frozen at -
the cancer drug cisplatin contains 65% platinum. if you have 1.53 g of compound, how many grams of platinum does this sample contain
Two cars are traveling along a straight line in the same direction, the lead car at 25.2m/s, How long does it take for the chasing car to stop
what would be the concentration in the pond (and outlet stream) after 2 days? Inlet and outlet flows are both 280 m3 per day.
a base for a building column measures 18.0 in. by 18.0 in. on a side and 12 in. high. compute the cross-sectional area
draw the structures of 1,1-dimethylcyclopropane and 1,2-dimethylcyclopropane. Is it possible to have 1,3-dimethylcyclopropane. Is this a correct name and different structure
Consider the electronic transition from n = 4 to n = 1 in a hydrogen atom, and select the correct statement below.
The photon emitted or absorbed during an electronic transition between n = 1 and n = 2 in a hydrogen atom has a wavelength in the visible portion of the electromagnetic spectrum and an energy that i
During a violent storm, a car is struck by a failing high-voltage wire that puts an excess charge of -850 mircoC on the metal car. how much is on the outer surface of the car
Analysis of an unknown solution produces absorbance values of: 0.45 @ lambda max for B 0.75 @ lambda max for A What is the molar concentration of the unknown
A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 12.0 cm, determine find the electric field just inside the paint layer