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What is the mole fraction of 1.98 m Fe(NO3)3 (aq). The molar mass of Fe..=241.9g/mol and the molar mass of H2O is 18.02 g/mol
irplane A , starting from rest with constant acceleration, requires a runway 600m long to become airborne. How long must the runway be for airplane B
Two loudspeakers emit sound waves along the x-axis. A listener in front of both speakers hears a maximum sound intensity, What is the phase difference between the speakers
A sheet of glass is coated with a 496 nm thick layer of oil (n = 1.42). What is the color of the most part of transmitted light
A neutron star is the remnant left after certain supernovae (explosions of giant stars). What is a typical neutron star density
Find the magnitude of book's velocity, just before the book reaches the floor. Find the direction of book's velocity
A ball is thrown straight up in the air at an initial speed of 30 m/s. find the maximum height of the ball
A plane touches down for a landing with a ground speed of 120 mi/h (53.7 m/s). What is the plane's acceleration while stopping
A football is thrown with an initial upward velocity component of 15.0 and a horizontal velocity component of 17.5. How far has the football traveled horizontally from its original position
A diverging lens (f = -11.0 cm) is located 25.0 cm to the left of a converging lens (f = 36.0 cm). What is the height of the final image
This seemed pretty straight foward but i get a bad anwser. In the solutions for this problem they just took the diameters, What is the speed in the second segmen
What's the quickest way to approach this problem? A car is traveling at 80 km/h along the highway. How long does it take for the second car to pass the first
when do we use melting point depression method to determine molecular mass vs. other methods such as tiltration and quantitative precipitation
A defibrillator consists of a 15.3-µF capacitor that is charged to 8.4 kV. What is the average power delivered to the tissues
As a positron moves through a region of space, its speed increases from 2.80 106 m/s to 8.00 106 m/s. Across what potential difference did the positron travel
A reaction mixture contains 0.41 M I2, 0.27 M Br2 and 3.5 M IBr. Which of the following statements is TRUE concerning this system. I2(g) + Br2(g) 2 IBr(g) Kc = 1.1 × 102
A soccer ball is kicked with an initial horizontal velocity of 18.0 m/s, find How far from where it was kicked will the ball land
The Beretta Model 92S (the standard-issue U.S. army pistol) has a barrel 127 long. What is the acceleration of the bullet while it is in the barrel
Determine the value of Kc for the following reaction if the equilibrium concentrations are as follows: [HCl]eq = 0.13 M, [HI]eq = 5.6 × 10-16 M, [Cl2]eq = 0.0019 M.
A 1200 kg car rounds a corner of radius r = 45m. If the coefficient of static friction between the tires, what is the greatest speed the car can have in the corner without skidding
a 25.0g sample of calcium chloride is dissolved in water to give 6.52 * x10^2 ml of solution. What is the concentration of the resulting solution in calcium, and what is the total ion concentration
Listed below are the forces that were applied to the cart in these three runs. Run Force (N) Run = 1(diamonds), Use Newton's second law to estimate the mass of the cart in kg from this set of dat
A 3 kg block moves down a hill that makes a 40° angle with the horizontal direction, what is the magnitude of the acceleration of the block
Some chambers used to grow bacteria that thrive on co2 have a gas mixture consisting of 95% co2 and 5% o2 what is the partial pressure of each gas if the total pressure of each gas if the total pres
If the wavelength of ultrasound in soft tissue is 0.308 mm, what is the frequency producing this wavelength