Calculate the mass of oxygen in a molecule of #"CO"_2# by using percentage composition? please help
Now, you must determine the mass of oxygen present in a single molecule of carbon dioxide. Start by figuring out the mass of a single molecule of carbon dioxide.
To do that, use Avogadro's constant, which tells you that
So, you know what
I'll leave the answer rounded to two sig figs.
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To calculate the mass of oxygen in a molecule of CO2 using percentage composition, you first need to know the molar mass of CO2, which is the sum of the atomic masses of carbon and two oxygen atoms.
The atomic mass of carbon (C) is approximately 12.01 g/mol, and the atomic mass of oxygen (O) is approximately 16.00 g/mol.
So, the molar mass of CO2 is: 1 atom of carbon (C) + 2 atoms of oxygen (O) = 12.01 g/mol + (2 × 16.00 g/mol) = 44.01 g/mol
Now, to find the percentage composition of oxygen in CO2: Percentage composition of oxygen = (Mass of oxygen / Molar mass of CO2) × 100
Mass of oxygen = 2 × 16.00 g/mol = 32.00 g/mol
Percentage composition of oxygen = (32.00 g/mol / 44.01 g/mol) × 100 ≈ 72.72%
Therefore, the mass of oxygen in a molecule of CO2 is approximately 72.72%.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
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