Answer:
Heat is something you can't control
Explanation:
Plastic is something you could control like moving it around
Cart b because it has greater force and higher mass
Answer:
Buffers are solutions that resist changes in pH, upon addition of small amounts of acid or base. The can do this because they contain an acidic component, HA, to neutralize OH- ions, and a basic component, A-, to neutralize H+ ions. Since Ka is a constant, the [H+] will depend directly on the ratio of [HA]/[A-].
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Answer: 10
Explanation: 10 + 4.1 = 10