The whitening toothpastes showed differences in their physical-chemical properties. All toothpastes promoted changes to the surface, probably by the use of a bleaching agent.
Answer: option E. None because in all the reactions O2 is in excess
Explanation:
Question:<u> As the sun heats the surface of the ocean, two layers of water result. What separates the layers.?</u>
Answer: <u>The Thermocline </u>
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I guess is weak alkaline. when the substance is more acidic, there will be less alkalinity
Answer:
BaBr2 (aq) + H2SO4 (aq) → BaSO4 (s) + 2 HBr (aq)
Explanation:
This is a precipitation reaction: BaSO4 is the formed precipitate.