Find the empirical formula of the compound, Chemistry

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Find the empirical formula of the compound

It is found that 1.431 g of element X contains 7.509 × 10²¹ atoms. The atomic mass of X is? How many protons does it contain? A compound containing only carbon, hydrogen, and oxygen is subjected to elemental analysis. Upon complete combustion, a 0.4266-g sample of the compound produced 0.5518 g of CO₂ and 0.2259 g of H₂O. What is the empirical formula of the compound?

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