Answer:
Ka = 4.9 x 10ˉ⁴
Explanation:
HOAc ⇄ H⁺ + OAcˉ
Ka = [H⁺][OAcˉ]/[HOAc]
Given pH = 2.58 => [H⁺] = [OAcˉ] = 10ˉ²∙⁵⁸ = 2.63 x 10ˉ³M
Ka = (2.63 x 10ˉ³)²/(0.0142) = 4.9 x 10ˉ⁴
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Physical
When something is cooling it isn’t changing it’s chemical composition so it’s physical
loses- because it needs to slow down which is caused by a loss in energy
Answer:
Pretty sure the answer is d) cells come from nonliving objects
Explanation:
i just think i remember xd