Answer:

Explanation:
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In this case, since the density is computed by dividing the mass of the substance by its occupied volume (d=m/V), we first need to realize that 0.8206 g/mL is the same to 0.8206 kg/L, which means we first need to compute the volume in L:

Then, solving for the mass in d=m/V, we get m=d*V and therefore the mass of gasoline in that full tank turns out:

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Sugar is 51.16% oxygen because 41.86 + 6.98 = 48.84, minus that from 100 gets 51.16.
My guess is chlorine since their right next to each other and i dont think their is a right answer due to the question saying predict
1) gain
(just remember this OIL-Oxidation Is Loss and RIG-Reduction Is Gain)
2) decrease