Determine the atomic mass of z
An element Z produces both a tetrachloride (ZCl4) and adichloride (ZCl2). Treatment of 10.00 g ZCl2 with excess chlorine produces the12.55 g of ZCl4. Determine the atomic mass of Z.
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Explain how much load can a 2.74-mm (.108-in) wire of this alloy support without yielding? What is the total extension if a load of 55 kg (121lb) is supported by a 30.5-m (100-ft) wire of this size.
A test bar 12.83 mm in dia. with a 50-mm gage length is loaded axially with the 200 kN (45,000lb) and is stretched 0.458 mm (0.018 in) Its diameter is 12.79 mm (.5035 in) under load.
The rhombic Sis all converted to monoclinic S (density 1.96g/cm3) to get a volume of4.22cm3 monoclinic S. 8.28g of rhombic S (density 2.07g/cm3) occupies 4 cm3.
The density of monoclinic sulfur is 1.96 g/cm3. The density of rhombic sulfur is 2.07 g/cm3. Both allotropic solid produces of sulfur consist of the discrete cyclic S8molecules. Explain what mass of rhombic sulfur will occupy a volume of
Suppose that the Metallurgical Engineer pays $6000, at the begin of the year, and at the end of year he receives the check for $7200. Find the annual rate of return for the investment?
The final solution has a volume of 0.25000 dm3, and a concentration of 0.248 mol dm-3, if pure liquid bromine has a molar mass of 159.808 g, a solution of bromine water is prepared for use in the laboratory.
To make 31.90 mL of solution a 0.6370-g sample of impure Ca (OH)2 is dissolved in the enough water. 20.00 mL of the resulting solution is then titrated with the 0.2593-M HCl.
Discuss how is a particular wave length at which to make the absorbance measurements chosen? How can determine the oxidation number of Co in the complex ion [Co(en)2Br2]+?
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