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Germanium has the same structure as silicon, but the unit cell size is different because Ge and Si atoms are not the same size. If you were to repeat the experiment described in the previous problem but replace the Si crystal with a Ge crystal, would you expect the X-rays to be diffracted at a larger or smaller angle, θ?
what is the total number of electron domains for a molecule having trigonal pyrmidal molecular geometry such as NH3
Consider the titration of 44.2mL of 0.240M HF with 0.180 M NaOH . Calculate the at each of the following points. A) How many milliliters of base are required to reach the equivalence point
what mass of barium is produced when molten BaCl2 is electrolyzed by a current of 3.30 105 A for 7.00 hours?
What is the maximum number of electrons in an atom that can have the following set of quantum numbers?
Question- Determine the electron geometry, molecular geometry, and idealized bond angles for each of the following molecules.
Why don't we observe the deBroglie wavelength of everyday macroscopic objects (such as a moving car or a thrown baseball)? The wavelength is too small relative to the size of macroscopic objects to be observed.
In the density determination of aluminum a student mistakenly recorded the volume of each piece of aluminum as 2 mL greater than its actual value ( 6 mL instead of 4 mL, 8 mL instead of 6 mL).
Suppose that a 1.0 L reaction vessel initially contains 1.0 mol ofO3 and 1.0 mol of O2. What fraction of the O3 will have reacted when the rate falls to one-half of its initial value?
2N2O5----> 4NO2 + O2. When 25.0g of N2O5 is allowed is decompose. It is found that 10.0g of NO2 forms. What is the percent yield
How much heat is liberated at constant pressure if .889 g of calcium carbanate reacts with 43.9 ml of .756 M hydrochloric.
A 25.5 mL aliquot of HCl (aq) of unknown concentration was titrated with 0.113 M NaOH (aq). It took 51.2 mL of the base to reach the endpoint of the titration. The concentration (M) of the acid was
What volumes of .200 M HCOOH and 2.00 M NaOH would make 300 mL of a buffer with the pH of one made from 475 mL of .200 M benzoic acid and 25 mL of 2.00 M NaOH
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