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In an electron microscope, electrons are accelerated to great velocities. Calculate the wavelength of an electron traveling with a velocity of 7.0 × 103 kilometers per second. The mass of an electron is 9.1 × 10-28 g.
Radon (Rn) has a mass number of 222 and an atomic number of 86 and decays by emission of an alpha particle. The product of this decay is, Identify the product of the nuclear reaction by providing its atomic symbol , mass number , and atomic number
An unknown solid mixture containing benzoic acid,copper(II)sulfate and sand. She added 15mL.of acetone to her sample. Which component of the mixture dissolved in the acetone?
what is the [OH-] in a solution that has a pOH of 2.70? Use E notation with 3 significant figures.
cortisol m 362.47 gmol one of the major steroid hormones is a key factor in the synthesis of protein. its profound
What is a zymogen. How are they activated. Give an example. What is a transition state? And what is its relationship with the active site
A buffer solution containing 0.25 M Acetic acid and 0.56 m Sodium acetate. After addition of 0.0060 mol HCL what is Ph of buffer.
What can you conclude from a graph where the plot of ln p (pressure) versus t (time) is linear instead of curved? (for conversion of methyl isonitrile into acetonitrile)
Find for the combustion of naphthalene. The heat capacity of the calorimeter, determined in separate experiment, is.
An automobile gasoline tank holds 36 kg of gasoline. When the gasoline burns, 95 kg of oxygen is consumed, and carbon dioxide and water are produced.
Given: The density of titanium metal is 4.51 g/cm3 at 25 C. What mass of titanium displaces 125.0ml of water at 25 C
The observed rate constant(k-observed) for one of the trials was measured to be 0.00400 s^-1. If the concentration of hypochlorite was fixed at 0.134 M, calculate the specific rate constant (k) for the trail.
Draw the flow of e- and the products of the Methoxide Ion and water including formal charges on all compounds.
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