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An athlete swims the length L of a pool in a time t1 and makes the return trip to the starting poisition in a time t2. What is her average speed for the round trip
For a solution containing 0.0066 M calcium nitrate and 0.054 M nitric acid, calculate the activity of the calcium ion.
Titanium is a strong, lightweight, corrosion-resistant metal that is used in rockets, jet engines, and bicycle grams. It is prepared by the reaction of titanium (IV) chloride with molten magnesium b
Calculate the equilibrium [F-] in a saturated solution of CaF2 and 0.0214 M Ca(NO3)2. Take ionic strength effects into account.
consider the following reaction: 2 A(g) + B(g) <-> 3 C(g) + D(g) Please determine Kc if 6.0 moles of A is added to 6.0 moles of B in a 2.0 L yields 0.10 moles of D at equilibrium.
One particle has a mass of 4.41 x 10-3 kg and a charge of +6.92 ?C. A second particle has a mass of 6.52 x 10-3 kg, Find the initial separation between the particles
Report the actual mass of H2O delivered to the flask. (Density of water = 1g/mL at 25°C.) (Poured 100mL of water in flask)
A coin is thrown vertically down into a well with an initial velocity of 2.5 m/s. What is the velocity of the coin
Based on ion charges and relative ion sizes, rank these ionic compounds by their expected melting points (highest to lowest).
he edge of the thimble of a micrometer moves a distance of 2.0 mm when it is given four complete revolutions. calculate the least count of the micrometer
Draw the major, neutral organic product for each substitution reaction below. For this question, assume that each substitution reaction goes to completion. Disregard elimination.
A concave shaving mirror has a radius of curvature of 40.1 cm. How far is the mirror from the man's face
if a 5.0ml aliquot (portion) of the above solution was taken and diluted to 500.0mL. What is the concentration of this new solution
Two masses of 4.00 kg each, connected by a string, slide down a ramp making an angle of 45° with the horizontal. Find the magnitude of the acceleration of the masses
Why does this calculation only provide an estimate of the NaOH concentration. In other words, why do we have to standardize the HaOH in this experiment to find its exact concentration
An airplane is flying in a horizontal circle at a speed of 520 km/h. If the wings of the plane are tilted 34° to the horizontal, what is the radius of the circle (in m) in which the plane is fly
Calculate the equilibrium [F-] in a saturated solution of CaF2 and 0.0223 M Ca(NO3)2. Take ionic strength effects into account.
An indentified liquid from the same stockroom was also analyzed: MS showed m/z =78 for the M+ and IR displayed bands at 3025 and 1603. What is the structure and name of liquid
A block of mass 16.7 kg supported by a vertical massless cable is initially at rest. estimate the magnitude of the net force acting on the mass
The total electric flux from a cubical box 40.0cm on a side is 2280 Nm^(2)/C. What charge is enclosed by the box
A nanowire is a (nearly) one-dimensional structure with a diameter on the order of a few nanometers. What is the tension in the middle
As a function of time, the velocity of the football can be written as. Calculate the average acceleration vector of the football
A trunk with a weight of 230 N rests on the floor. The coefficient of static friction between the trunk and the floor is 0.32, what would be the acceleration of the trunk
A sample of a liquid from an unlabeled bottle was subjected for analysis: MS showed that M+ has an m/z of 89 and IR displayed bands at 2995-2840 cm-1, and 1562, and 1425. Identify the functional gro
one of your classmate has a friend with a boat. here is your classmate on water-skis being towed. what is the friction force of the water