A 79.22-g sample of a compound is decomposed and found to contain 30.71 g Ca, 15.82 g P, and 32.69 g O. Determine its empirical formula As shown here: A) Ca2P3O8 B) CaPO C) CaPO2 D) Ca3P2O8 As in D) As in B) As in C) As in A)
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To do this, divide the mass of each element by its atomic mass. The atomic masses are approximately: Ca = 40.08 g/mol, P = 30.97 g/mol, and O = 16.00 g/mol. - Moles of Ca = 30.71 g / 40.08 g/mol = 0.766 moles - Moles of P = 15.82 g / 30.97 g/mol = 0.511 moles - Show more…
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