<span>Use the equation for Ka => 1.8 x 10 ^ (-4) = [H+][HCO2-}, these 2 concentrations are equal so, </span>
<span>1.8 x 10 ^ (-4) = [H+]^2 </span>
<span>and [H+] = 4.2 × 10^-3 M </span>
Explanation:
<h3><em>A chemical property is a characteristic of a particular substance that can be observed in a chemical </em><em>reaction</em></h3>
<em>. Some major chemical properties include flammability, toxicity, heat of combustion, pH value, rate of radioactive decay, and chemical stability.</em>
Answer: A tick on a deer
Explanation:
because commensalism is a type of symbiotic relationship in which one species benefits, while the other species is neither harmed nor helped
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