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silver has only two naturally occurring isotopes 107ag with a mass of 106.90509amu and an abundance of 51.84% and 109ag with a mass of 108.9047 amu calculate the atomic mass of silver.
Two long, parallel wires separated by 4.50 cm carry currents in opposite directions. The current in one wire is 1.20 A, and the current in the other is 3.45 A. Is the force attractive or repulsive
What are the mole fractions of C6H6 (x1), C3H6 (x2), O2 (x3) and N2 (x4) in the fresh feed stream. What is n6, the molar flow rate of the recycle stream
A pendulum clock has a period of 0.683 s on Earth. It is taken to another planet and found to have a period of 0.828 s, Find the gravitational field strength on the other planet.
You want a screen to be illuminated with an intensity of 662 mW/m2. The screen is 10.05 m away from the light source, What is the power of the light source
carbon tetrachloride is a useful solvent for both IR absorption and Raman spectroscopy because it has few vibrational modes
What is a variable which has no effect on the rate of a chemical reaction under any circumstance is
A clock has a pendulum that performs one full swing every 1.5 s (back and forth). What is the length of the pendulum
Soggy french fries drenched in Vinegar, which is a 0.83M solution of acetic acid. If the acetic acid in vinegar is 0.47% dissociated, calculate Ka for acid. What is the pH of this solution
While visiting Planet Physics, you toss a rock straight up at 11m/s and catch it 2.7s later. While you visit the surface, What is the mass of Planet Physics
A playground merry-go-round has a radius of 4.50m and a moment of inertia of 240kg?m2 and turns with negligible friction about a vertical axle through its center. What is the average power supplied
A solution of .637g of the solid in 24.1g of the solvent diphenyl gave a freezing point depression of 1.76 degree celsius. Calculate the molar mass and molecular formula of the solid(k1 for diphenyl
In 2000, NASA placed a satellite in orbit around an asteroid. Consider a spherical asteroid with a mass of 1.00×1016kg and a radius of 9.90km, What is the escape speed from the asteroid
Ammonium nitrate is a common ingredient in fertilizers that can also be used to make explosives because it decomposes as follows
A circular coil 18.0cm in diameter and containing nine loops lies flat on the ground. The Earth's magnetic field at this location has magnitude 5.50×10?5T, Determine the torque on the coil
how did rutherford interpret the observation that only a very few of the a particles were scattered by the gold foil
Knowing that the arenium ion intermediate has positive charge on the ortho and para carbons, draw each resonance structure - one which shows the positive charge on the ortho carbon and one which sho
A solution is prepared by mixing 0.3355 moles of NaNO3(84.995g mol^-1) with 235.0g of water(18.015g mol^-1). It's density is 1.0733g ml^-1. What is the morality of the solution and percent by weight
The rate constant for a certain chemical reaction is. 0.0125 L mol^-1 s^-1 at 25 degree Celsius and 0.0125 L mol^-1 s^-1 at 50.0 Celsius. What is the activation energy for the reaction, expressed in
A Solution of 1.69g of this compound in 9.23g of benzene freezes at 2.18 degree celsius. What are the molecular formula and molar mass of the compound? ( the normal freezing point of pure benzene is
An object of mass 5kg is moving with an momentum of 50 kg m/s. What is the speed of the object? What is the magnitude of the momentum of the object
What is the pH of a 0.200M ammonium Percholate solution, NH4ClO4 The ionization constant of ammonia is 1.8x10^-5
In the pie chart graphs the percent natural abundance fo ci-35 (atomic mass 34.969) is represented as grean, and the percent natural abundance for cl-37 atomic mass 36.966 amu is represented as yell
f the U.S. demand for electricity continues to grow at about 2% per year, how many more MWe would be needed to meet that demand in 10 years, What fraction of our present use of natural gas is this
What is the density of Kripton gas at standard temperature and pressure? The atomic mass of Kripton is 83.80 atomic mass unit