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Two positive point charges, each 12\mu C , lie along the x-axis at x = -0.10m and x = +0.10m. Find the electric field at the point (0, 0.25m ) on the y-axis
When 0.538 g of Neon is added to an 800 cm^3 bulb containing a sample of argon, the total pressure of the gases is found to be 1.17 atm at a temperature of 295 K. Find the mass of the argon in the b
You are trying to extract the compound 2-aminobenzoic acid from an aqueous solution into ether (in a form with a net zero charge). At which pH would the extraction be the most efficient? Ka1(COOH)=8
If 11.6 g of gold is deposited on the negative electrode of an electrolytic cell in a period of 3.03 hours, then what is the current through the cell during this period
Calculate the diameter of a 1.51 cm long tungsten filament in a lightbulb if its resistance is 0.507 ?
Maleic acid is used to retard the breakdown of fats. Imagine that you prepared a buffer by adding 14.35 millimoles of maleic acid and 20.57 millimoles of sodium hydrogen maleate to a 250.0mL volumet
An air-traffic controller observes two aircraft on his radar screen. The first is at altitude 750 m, horizontal distance 19.8 km, What is the distance between the two aircraft
In a local bar, a customer slides an empty beer mug down the counter for a refill. The height of the counter is h. What was the direction of the mug's velocity just before it hit the floor
What are the concentrations of the various species of the glutamic acid system in a solution which is at physiological pH 7.40, and a total concentration for all forms equatl to 5.00x10^-3M
A golf ball is hit off a tee at the edge of a cliff. Its x and y coordinates as functions of time are given by x = 19.9t and y = 4.08t ? 4.53t2, obtain the expression for the acceleration vector as
What is the pH of a solution formed by adding 50.20mL of 0.1153M NaOH to 505.8mL of 0.01357M aspartic acid. the 0.01357M refers to the concentration of the neutral form of the amino acid before the
A tourist being chased by an angry bear is running in a straight line toward his car at a speed of 5.47 m/s. The car is a distance d away, What is the maximum possible value for d
A resistor with R = 9.08 ? resistance is connected to a real (i.e. non-ideal) battery, What is the electric current flowing in the circuit
A 150 kg rock (density is 2500 kg/m 3 ) is dropped to a lake. Determine how much force the man needs to life the rock from the bottom of the lake
the speed with which hair or fingernails grow. what is the average speed of growth? What units are most appropriate for describing this speed
"As a baseball is being caught, its speed goes from 30 to 0 m/s in about 0.005 s. Its mass is 0.145 kg. What is the baseball's acceleration in m/s2 and in g's
Classify each of the following as a binary ionic compound, ternary ionic compound, binary molecular compound, or ternary oxyacid. 1.) Hydrazine, N2H4 2.) Nitrous Acid, HN02(aq) 3.) Cobalt(II) Nitrid
A ballplayer standing at homeplate hits a baseball that is caught by another player at the same height above the ground from which it was hit. How high will the ball rise
At t = 0, an automobile traveling north begins to make a turn. It follows one-quarter of the arc of a circle of radius 10.8 m until, Find the change in its velocity during the turn
If your chemistry book weighs 2 kgs, and you needed to lift the book from the floor to a shelf 150 cm high, calculate the energy in J required to lift the book from the floor to the shelf 100 times.
skier who, starting from rest, reaches a speed of 5.04 m/s when going down a slope for 4.21 s, How far does the skier travel in this time
What can be said about the stoichiometric coefficients of a balanced chemical reaction AND the powers to which the concentrations are raised in the rate-law expression
A runner runs 3.0 km, in a straight line, in 9.0 min and then takes 25 min to walk back to the starting point. What is the average speed for the whole trip
A pellet gun is fired straight downward from the edge of a cliff that is 14.5 m above the ground. How far above the cliff edge would the pellet have gone had the gun been fired straight upward
A reaction has a first order rate constant of 4.31x10-5 s-1 at 25oC and 0.00111 s-1 at 65oC. What is the value of the rate constant at 43oC