Determine an approximate atomic mass for the element
Determine an approximate atomic mass for the element when an element crystallizes in a face- centered cubic lattice and has a density of 1.45 g/cm^3 and the edge of its unit cell is 4.52x 10^-8 cm.
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Calculate the work function. Determine the minimum frequency of light (threshold frequency) that will reject an electron from Ca?
Assume there is the perfect negative correlation between amount of time spent (on average) answering each and every question on a test and total score upon the test. Suppose that Mx=30 seconds, and sx=10 seconds for the time per item, and that My=
Explain how you would prepare a 0.1M phosphate buffer with a pH of 7.2. Discuss what ratio of salt to acid would you use? Explain in detail.
Estimate the amount of water in grams that must be added to a 5.00 g of Urea (NH2) 2 CO in the preparation of a 16.2 percent by the mass solution?
Amount of the rain in city. The average amount of rain per year in Greenville is 49 inches. The standard deviation is 8 inches. Determine the probility that next year greenville will recieve the following amount of rainfall. Suppose the value is n
A bottle which is having .75 L is dried, cleaned, and closed in a room where the air is 28 C and 31% relative humidity( that is, the water vapor in the air is .31 of the equilibrium vapor pressure at 28 C). The bottle is stored at 0.0 C and brough
If a Chas a double bond and 2 lone pairs is it still sp2hydbridized? How do lone pairs effect the hybridization of C or any element? If you have a C that has 2 single bonds and a lone pair of electrons does it still have sp3 hybridization?
An electric 2012 nissan leaf drives upon average 100 mpg with the standard deviation of 2 miles. Determine the porbability that this car will drive from reno to new yourk and back (5420 miles) with 54 gallons of gas? Suppose that the mileage per e
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