Moles of solute does not change.
A substance that undergoes change during a reaction, usually from coming in contact with another substance
<em>A: When burning Sulfur, Sulfur Dioxide is released. Having more Oxygen available provides more reactive potential for the burning Sulfur, making it burn much more fiercely. In water, the Sulfur Dioxide forms Sulfurous acid. Added: 12 years ago.</em>
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<em>Explanation:</em>
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It is A since the tails are hydrophobic.
