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Current convention defines 1 amu as exactly 1/12 the mass of an atom of the isotope 12C. Since most elements occur naturally in well-established fixed relative abundances of different isotopes, the so-called Atomic Mass for a particular element represents a weighted average of the masses of the individual isotopes. For example, naturally occuring carbon is a mixture of 98.90% 12C (12.000000 amu) and 1.10% 13C (13.003355 amu) plus a trace of 14C (14.003241 amu). The Atomic Mass of carbon is found to be 12.011 amu.A Molecular Mass is the sum of the (averaged) Atomic Masses for all atoms in a molecule.
What is the Molecular Mass of H2SeO3?
acid is dissolved in water to produce a 1.51 M solution. The pH of the resulting solution is 2.52. Calculate the Ka for the acid.
the specific heat of the dilute nacl solution formed during the neutralization of the hcl is about 2 less than the
A 11.0 gram sample of nitrogen gas has a volume of 972 milliliters at a pressure of 2.81 atm. The temperature of the N2 gas sample is.
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Treatment of 1.385 g of an unknown metal M with an excess of aqueous HCl evolved a gas that was found to have a volume of 382.6 mL at 20.0 degree C and 755 mmHg pressure. What mass of MClx is formed
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Explain why compunds can have same electron cloud geometry but different molecular
Nickel metal in 0.1M nickel nitrate solution Copper metal in 0.1M copper nitrate solution The solutions are joined by a simple salt bridge. The nickel corrodes and the copper plates on during operation of the cell. Answer the following question: W..
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A pipette is used to add 46 mL of 0.3 M Pb(NO3)2 to a 273.0 mL solution of 0.3 M NaF. Determine the equilibrium concentration of Pb2+(aq) in the final solution. Ksp(PbF2)=3.6E-8
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