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Unformatted text preview: 6. Determine the molar mass of this compound in g/mol. (NH 4 ) 2 SO 3 (33%) 7. How many moles of (NH 4 ) 2 SO 3 are present in 44.9 g of (NH 4 ) 2 SO 3 ? (33%) 8. How many H atoms are present in 44.9 g of (NH 4 ) 2 SO 3 ? (34%) 9. How many moles of Zn(NO 2 ) 2 are there in 112.20 g of sample? How many O atoms are there in the sample? 10. The hypothetical element, Z, consists of two stable isotopes. The first stable isotope, 42 Z, has an actual mass of 42.2510 amu. The second stable isotope, 45 Z, has an actual mass of 44.6615 amu. The atomic wieght of element Z is 43.9036 amu. What are the isotopic abundances of the two stable isotopes?...
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