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The common oxidation number for an alkaline earth metal is +2.Aided by the Born-Mayer equation for lattice energy and aBorn-Haber cycle, illustrate that CaCl is an exothermic compound, Use a appropriate analogy to estimate an ionic radius for Ca+. The sublimation enthalpy of Ca(s) is 176 kJ/mol. Depict that an explanation for the nonexistence of CaCl can be found in the enthalpy change of the reaction2CaCl(s) --> Ca(s) + CaCl2(s)
What is the theoretical mass of xenon tetrafluoride that should form when 130 g of xenon is reacted with 100 g of F2? What is the percent yield if only 145 g of XeF4 is actually isolated?
What total volume of ozone measured at a pressure of 29.0mmHg and a temperature of 234k can be destroyed when all of the chlorine from 16.5g of CF3Cl goes through ten cycles of the above reactions
WHen electrons in a molecule are not found between a pair of atoms but move throughout the molecule, this is called
Next calculate molar internal energy and molar heat capacity assuming vibrational energy levels are not significantly populated at 298 K and do not contribute to molar heat capacity and molar internal energy. Calculate percent error for each molar..
This strontium isotope is radioactive, with a half-life of 28.1 yr. Calculate how long it will take for 0.860 g of the isotope to be reduced to 0.170 g by decay
Calculate the 1/2 life for the decomposition of co2 which is first orderwithnrespect to co2 at 1000degree k with k=1.8x10to-13degree sec
Student B's results are 8.4 g/cm^3, 8.8 g/cm^3, 8.3 g/cm^3. Compare the two sets of results in terms of precision and accuracy.
which one of the following best describes the c3-c4 bond in 1-butene? a sp3-sp3 and sigma b sp2-sp2 and sigma c sp2-sp3
A certain weak acid, HA , has a Ka value of 6.6×10?7. Calculate the percent ionization of HA in a 0.10 M solution. Calculate the percent ionization of HA in a 0.010 M solution.
How many moles of sodium hypobromite (NaBrO) should be added to 1.00 L of 0.055 M hypobromous acid (HBrO) to form a buffer solution of pH 8.95? Assume that no volume change occurs when the NaBrO is added.
The concentrationof the alkane C20H42 (FM= 282.55) in a particular sample in rain water is 0.2ppb. Assume that the density of the rain water is close to 1.00 g/ml and find the molar concentration of C20H42.
Calculate the amount of heat energy in each of the following: A) calories removed to condense 125g of steam at 100 degrees celsius and to cool the liquid to 15 degrees celsius
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