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calculate the formula unit of mass of 2nO K2CO given atomic masses of Zn=65u Na=23u K=39u C=12u and O=16u |
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Answer» Formula unit mass is DEFINED as the sum of the atomic masses of all atoms that are present in a formula unit of the given compound. Atomic mass of Zn = 65u Atomic mass of NA = 23u Atomic mass of K = 39u Atomic mass of C = 12u Atomic mass of O = 16u Calculating the formula unit masses of the given compounds: ZNO = (65+16)u = 81u Na2O = [(2 x 23)+16]u = (46+16)u = 62u K2CO3 = [(2 x 39)+12+(3×16)] = (78+12+48)u = 138u Hence, the formula unit mass of ZnO is 81u, Na2O is 62u and K2CO3 is 138u |
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