Answer:
<em>C</em> Na+ = 0.228 M
Explanation:
M 2M M
∴ mol Na2S = (0.0478 L)*(0.801 mol/L) = 0.0383 mol
∴V sln = 336.7 mL = 0.3367 L
⇒ <em>C</em> Na2S sln = 0.0383 mol / 0.3367 L = 0.114 M
∴ mol Na+ = (0.0383 mol Na2S)*( 2 mol Na+/ mol Na2S) = 0.0766 mol
⇒ <em>C</em> Na+ = 0.0766 mol / 0.3367 L = 0.2275 M
Answer:
C. The more niches in an ecosystem, the greater the biodiversity.
Explanation:
Mixtures <span>are not chemically united, so they can be divided using physical methods.
</span>Sand is a <span>mixture. (Because different rocks have different chemical compositions.)</span>
Titanium dioxide is a type of mixture if particles of titanium dioxide are insoluble in the liquid.
<h3>What is a mixture?</h3>
A mixture is composed of one or more pure substances in varying compositions.
A mixture is a material made up of two or more components joined together, but not chemically combined. In a mixture, a chemical reaction does not occur and each of its components maintains its identity and chemical properties.
A compound is a substance formed by the chemical combination of two or more different elements from the periodic table. The elements of a compound cannot be divided or separated by physical processes. They are not mixtures or alloys
An element is a type of matter made up of atoms of the same class. It is an atom with unique physical characteristics, a substance that cannot be decomposed by a chemical reaction.
Learn more about the mixture here:
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I am pretty sure the correct answer is C. Water has large heat capacity meaning it can absorb a lot of energy before changing temperature. That helps the body regulate heat since it can be exposed to different environments and experience small temperature changes.
I hope this helps. Let me know if anything is unclear.