How can I calculate the elemental composition?
Flexi Says: To calculate the elemental composition of a compound, follow these steps:1. Determine the molecular formula of the compound. For example, let's use water, which is H2O.2. Find the atomic masses of each element in the compound. The atomic mass of hydrogen (H) is approximately 1.01 amu and the atomic mass of oxygen (O) is approximately 16.00 amu.3. Multiply the atomic mass of each element by the number of atoms of that element in the compound. For water, this would be (2 x 1.01 amu) for hydrogen and (1 x 16.00 amu) for oxygen.4. Add up these amounts to get the total molecular mass of the compound. For water, this would be 2.02 amu (for hydrogen) + 16.00 amu (for oxygen) = 18.02 amu.5. Divide the mass contribution of each element by the total molecular mass and multiply by 100 to get the percentage. For hydrogen in water, this would be (2.02 amu / 18.02 amu) x 100 = 11.21%. For oxygen in water, this would be (16.00 amu / 18.02 amu) x 100 = 88.79%.So, the elemental composition of water is approximately 11.21% hydrogen and 88.79% oxygen.
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