What is the average atomic weight of the element
A certain element has three isotopes. The isotopic masses (amu) and abundances in ( ) are: 159.37 (30.60%), 162.79 (15.79%), and 163.92 (53.61%). What is the average atomic weight (amu) of the element?
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The mass of an atom oscillating at a frequency of 8.6 x 1011Hz in its lattice is 1.2 x 10-26 kg. If the amplitude of its oscillations is 0.045nm, find (a) its total energy in joules and eV, (b) its maximum speed, (c) its maximum acceleration, and
A peroxidase enzyme isolated from human red blood cells was found to contain 0.29% selenium. What is the minimum molar mass of the enzyme?
The financial industry Earnings per share last year were $3. This year, earnings per share in 10 financial companies were as follows. Test the hypothesis that this year's earnings differ from last year, two-tail, at alpha (significance level) =.10
The photograph in the figure below is a short-time exposure (1/31 s) of a juggler with two tennis balls in the air. (Take the diameter of the tennis ball to be 6.5 cm. (a) The tennis ball near the top of its trajectory is less blurred than the lowe
A certain element has three isotopes. The isotopic masses (amu) and abundances in ( ) are: 159.37 (30.60%), 162.79 (15.79%), and 163.92 (53.61%).
If the mass is deflected 2cm down, measured from its equilibrium position, and given an upward velocity of 8cm/s, determine its amplitude and maximum acceleration.
ranslate the excerpt below into a confidence interval for p and approximate the value of the level of confidence, c. In a survey of 8448 adults, 29.9% said they were taking vitamin E as a supplement. The survey's margin of error is plus or minus 1
Using a rope, a child holds a sled at rest on a 30.0 degree inclined frictionless, snow-covered hill. A) if the sled weighs 77.0 N, find the force exerted by the rope.
The conduit between the turbine and nozzle (nozzle) output of an engine is 0.60 m in diameter. Calculate the force required to maintain the nozzle in the duct. The gas is k = 1.4 and R = 265 n.m / kg.K
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