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When spheres of radius r are packed in a body-centered cubic arrangement, they occupy 68.0% of the available volume. Calculate the value of a, the length of the edge of the cube in terms of r.
Please explain the calculation.
consider the reaction below3 cano32 aq 2 na3po4 aq --gt ca3po42 s 6 nano3 aqhow much precipitate will be produced if
What percentage of the Sr-90 that was formed in the detonation of the first fission bombs in August 1945 is still present in the environment in August 2094
The isotope 22Na has a half-life of 2.60 years. How much of a 1.00 gram sample would be left after 1.00 yr?
A gas is confined to a container with a massless piston at the top.A massless wire is attached to the piston. When an external pressure of 2.00 rm atm is applied to the wire, the gas compresses from 5.90 to 2.95 L. When the external pressure is in..
Alpha-linolenic acid is one of a large group of fatty acids that are found in fish oil, walnuts and canola seeds. These nutrients are essential for good health. All of these fatty acids consist of an unsaturated hydrocarbon that is terminated by a..
Dicarbonyl compounds, such as benzil, can be characterized by reaction with o-phenylenediamine to form a substituted quinoxaline.
the reaction of 0.779 g k with oltsubgt2ltsubgt forms 1.417 g potassium superoxide a substance used in self-contained
A galvanic cell consists of an electrode composed of aluminum in a 1.0 M aluminum ion solution and another electrode composed of silver in a 1.0 M silver ion solution, connected by a salt bridge. Calculate the standard potential for this cell at 2..
A bone sample with 2.8 g of carbon has 17.4 disintegrations per minute. How old is the bone sample in years. What percentage of the atoms of carbon in the biosphere are C-14?
How much time has passed if a sample of Sodium-24 (with a half-life of 15.0 hours) original containing 166 grams now contains only 5.19 grams
Earth's ocean contain 3.5*10^8 mi^3 of water and cover an area of 1.4*10^8 mi^2. What is the volume of the ocean in cubic kilometers
A compound, C10H14, shows an IR peak at 745 cm-1. Its 1H NMR spectrum has peaks at delta 7.18 (4 H, broad singlet), 2.70 (4 H, quartet, J=7 Hz), and 1.20 (6 H, triplet, J=7 Hz).
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