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Calculate the concentration of OH- ions in a HCL solution whose hydrogen ion concentration is 1.3M.
The wheel makes one full rotation every 7 minutes, and at time t = 0 you are at the 3 o'clock position and descending. Let f(t) denote your height (in meters) above ground at t minutes. Find a formu
Boron has 2 naturally occuring isotopes, which have masses10.0129 and 11.0093 amu, respectively. Given the average atomic mass of boron (10.81amu), determine the % abundance of each isotope.
After the collision, the pendulum and object stick together and swing to a maximum angular displacement, theta. (a) Find the initial velocity of the pendulum. (b)Find the maximal angel, theta.
The total cost function is: TC(q) = 625 + 100. Find the value of output (q) that minimizes average total cost (ATC), where = ATC(q) = TC(q) . Assume that q > 0. q.
If the coefficient of static friction between your coffee cup and the horizontal dashboard of your car is µ s=.800,how fast can you drive on a horizontal roadway around a right turn of radius
Use the divergence theorem to find the double integral(S)dS where F(x,y,z)=z^2i+(y^2+sinx)j+xy^3k and S is the region bounded by the parabolic cylinder y=x^2 and the planes z=y,y=1 and z=0,oriented
A student add a total of 15.00 m L of .5432 HCl to their unknown alkaline earth carbonate .it completely dissolved and stopped fizzing . Addition of 3 drops of bromophenol blue confirmed
A 3-kg cart moving to the right with a speed of 5.9 m/s has a head-on collision with a 5-kg cart that is initially moving to the left with a speed of 1.0 m/s. After the collision, the 5-kg cart is m
Callisto and Io are two of Jupiter's satellites. The distance from Callisto to the center of Jupiter is approximately 5 times farther than that from Io to the center of Jupiter. (a) Do the satellite
You are asked to go into a lab and prepare an acetic acid- sodiumacetate buffer solution with a pH of 4.00 plus or minus 0.02. What molar ratio of CH3COOH to CH3COONa should be used?
A 12-kg block on a horizontal frictionless surface is attached to a light spring (force constant = 0.80 kN/m). The block is initially at rest at its equilibrium position when a force (magnitude P =
A certain string just breaks when it is under 25 N of tension. A boy uses this string to whirl a 2-kg stone in a horizontal circle of radius 3 m. The boy continuously increases the speed of the ston
What is the actual concentration of KI (aq) if the nomial concentration is 0.30 M and 49.815 g are used in 500.00 mL? Explain in detail.
Find the time t required for a 1400$ investment to double interest rate r coumpounded continusly and triple at interest rate r compounded continouly value of r : 4.75%
A 2.0-kg block slides on a frictionless 15 degree inclined plane. A force acting parallel to the incline is applied to the block. The acceleration of the block is 1.5 m/s^2 down the incline. What is
Dr. pepper is bottled so a bottle at 25C contains carbon dioxide at a pressure of 5 atm over the liquid. assuming an atmospheric partial pressure of carbon dioxide is 4e -4 atm.
Write an expression (in terms of i and j ) for the position of A relative to B as a function of t, where t = 0 when the ships are in the positions described as above. At what time is the separation
Write the equation for the solubilityequilibrium for your solute and include heat as a reactant orproduct. Explain the heat effect in terms of relative energies involved in the process of solution.
The total profit (in dollars) from the production and sales of x espresso machines is P(x)=60x-0.8x^2-210. Find the marginal profit at a production/sales level of 350 machines dollars per espresso mac
The student notes that the dime slides outward 2.25 s after she has switched on the turntable. (a) Why does the dime slide outward? (b) What is the coefficient of static friction between the dime an
Octane has a normal boiling point of 125.5C and a heat of vaporization of 38.8KJ/mol. what is the vapor pressure of octane at 20C?
How does increasing the solvent's polarity affect the Rf values of non-polar compounds? Explain in detail.
A sailboat is sailing due east at 7.10 mph. The wind appears to blow from the southwest at 12.7 mph. What is the true wind speed? What is the true wind direction? (south of west).
How much work is done pumping all of the liquid out over the top of the tank? How much work is done pumping all of the liquid out of a spout 4 feet above the top of the tank?