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Suppose the mass spectrum of a hypothetical monatomic element X contains a signal at mass number 13 and another of identical height at mass number 15.
(a) sketch the mass spectrum. make sure each axis is properly labeled.
(b) how many isotopes are present? why?
(c) what are the fractional abundances of the isotopes? why?
How many donor atoms enable EDTA to form a stable complex ion with lead. A. 4 B. 6 C. 5 D. 3 E. 2
Based on the procedure that you used in this experiment, and the same molar quantities of reactants, develops a procedure that would be suitable for the preparation of isobutyl propionate.
a 51.0 g sample of ethylene glycol hoch2ch2oh is dissolved in 540.0 g of water. the vapor pressure of water at 32degc
A solution of calcium ions contains 5 meq/650. cm3 of calcium ion. How many moles of calcium ion does this solution contain?
a laboratory analysis showed the following resultsnbspnbspnbspnbspnbspnbspnbspnbspnbspnbspnbsp cec 20
What volume of hydrogen gas, in liters, is produced by the reaction of 4.17g of iron metal with 60.0 mL of 3.00M HCl?
Acetic acid, CH3COOH, could be produced from (a) the reaction of methanol with carbon monoxide; (b) the oxidation of ethanol; (c) the reaction of carbon monoxide with methane. write balanced chemical equations for each process. carry out a thermod..
Enthalpy of combustion of ethanol(g) is -1371 kJ/mol. Temperature and pressure of intake mixture is 25 oC and 1 bar, respectively. Assume ideal behavior of diatomic gas and ignore the changes in the number of moles of gas during combustion.
it takes 55.0 to raise the temperature of an 11.7 piece of unknown metal from 13.0 to 24.0. what is the specific heat
Describe a simple and practical way to make 1.00 L of this buffer solution, assuming a 1.0 M solution of the molecular base is available and that the chloride salt of the conjugate acid is available as a solid
A 10.00 mL aliquot of weak base is titrated with HCl. The equivalence point is reached after 17.21 mL of 0.4332 M HCl has been added. The pH is equal to 10.03 after 5.00 mL of HCl was added. Determine:
What is the central atom for CO2, how many bonds are formed, is it polar or nonpolar, what's the direction of electronegativity
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