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Determine the amount of heat emitted when each of the following completely reacts (assume that there is more than enough of the other reactant):
The tangential acceleration at and the centripetal acceleration ac of a point at the edge of the disk.
Consider an electrochemical cell constructed from the followinghalf cells, linked by an external circuit and by a KCl salt bridge.1. an Al(s) electrode in 1.0 M Al(NO3)3solution 2. an Pb(s) electrod
If an additional 5.0 mJ of energy are supplied to the rotational energy, what is the new angular speed of the ball?
The 14C activity of some ancient Peruvian corn was foundto be 10 disintergrations per minute per gram of carbon. If present day plant life shows 15 dpm/g, how old is the Peruvian corn? Thehalf
Find the center, foci, vertices, and lengths of the major and minor axes. If it is a parabola, find the vertex, focus, and directrix. If it is a hyperbola, find the center, foci, vertices, and asymp
The rope will break if the tension in it exceeds 2.10×104 , and our hero's mass is 80.5 . 1) If the angle between the rope and the horizontal is = 11.7, find the tension in the rope.
In the complex ion [ML6]n+, Mn+has seven d electrons and L is a strong field ligand. According to crystal field theory, the magnetic properties of the complex ion correspond to how many unpaired el
The current density in a copper wire of radius 0.750 mm is uniform. The wire's length is 6.00 m, the end-to-end potential difference is 0.200 V, and the density of conduction electrons is 8.10 &time
Calculate the de Brogile wavelength of a baseball of mass 0.17kg that is thrown with a velocity of 30 m/s.(me(mass of electron)= 9.1093819E-11)
Two bodies A and B move toward each other with speeds of 80 m/s and 20 m/s, respectively. The mass of A is 140g and that of B is 60g. After a head on, perfectly elastic collision, what is the speed
If it is a parabola, find the vertex, focus, and directrix. If it is a hyperbola, find the center, foci, vertices, and asymptotes.
This reactiongenerates a large amount of heat and gaseous products. It is the sudden formation of these gases , together with their rapidexpansion, that produces the explosion.
The tub of a washer goes into its spin-dry cycle, starting from rest and reaching an angular speed of 7.0 rev/s in 13.0 s. At this point, the person doing the laundry opens the lid, and a safety swi
A chemist wants to prepare 0.25 M HCl. Commercial HCl is 12.4 M. How many millimeters of the commercial acid does the chemist require to make up 1.50 L of the dilute acid?
A 2.10 x 102-N force is pulling an 85.0-kg refrigerator across a horizontal surface. The force acts at an angle of 17.0° above the surface. The coefficient of kinetic friction is 0.200, and the
There are currently 61 million car in a certain country increasing by 3.9% annually. How many years will it take for this country to have 82 million cars round to nearest year.
A flask contains 49.8 mL of 0.150 M calcium hydroxide. How many millimeters of 0.350 M sodium carbonate are required to react completely with the calcium hydroxide?
A 6500-kg satellite is in a circular earth orbit that has a radius of 3.5 10^7 m. A net external force must act on the satellite to make it change to a circular orbit that has a radius of 8.9 10^6 m
Find the local extrema for the revenue function, and find over which intervals is the graph of the revenue function concave upward or concave downward.
A 3.33 gram sample of iron ore is transformed to a solution ofiron (II) sulfate and this solution is titrated with 0.150 Mpotassium dichromate.
With the rational function f(x)=(3-3x^2)/(x^2-4), find any intercepts for the graph, find any vertical and horizontal asymptotes for the graph, and sketch the graph.
For comparison, a .22 caliber bullet has a mass of 2.6 g and, starting from rest, exits the barrel of a gun with a speed of 412 m/s. Determine the work done to launch the motion of both the hammer a
When an 81.0-kg adult uses a spiral staircase to climb to the second floor of his house, his gravitational potential energy increases by 1.70 10^3 J. By how much does the potential energy of a(n) 16
During the developing process of black and white film, silverbromide is removed from photographic film by the fixer. The majorcomponent of the fixer is sodium thiosulfate.