5. calculate the atomic mass of element "X" if it has 2 naturally occurring isotopes with...

5. calculate the atomic mass of element "X" if it has 2 naturally occurring isotopes with the following masse and natural abundances:
X-45: 44.8776 Amu 32.88%
X-47: 46.9443 Amu 67.22%

10. silver has an atomic mass of 107.868 Amu. The Ag-109 isotope (108.905 amu) is 48.16%. what is the amu of the other isotope?

39. calculate the mass percent composition of sulfur in Al2(SO4)3.

41. determine the molecular formula for a compound that is 70.79% carbon, 8.91% hydrogen, 4.59% nitrogen, and 15.72% oxygen.

42. combustion analysis of 63.8 mg of a C, H, and O containing compound produced 145.0 mg of CO2 and 59.38 mg of H2O. what is the empirical formula for the compound?

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queen_honey_blossom answered 1 year ago

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