Answer:
Where is the phase melting graph? Can't seem to find it
<h2>Answer:</h2>
A.NH4Cl
<h2>Explanations:</h2><h2>How are buffer formed?</h2>
Buffers are formed by mixing an equal amount of weak base or acids and their corresponding salts.
Therefore in order to make a buffer with NH3 (a weak base), then a corresposding weak salt is required. A corresponding salt for the given base is NH4Cl
Answer:
8.468 x 10^24.
Explanation:
We know from Avogadro’s Law that 1 mol of a gas contains 6.022 x 10^23 molecules.
So, 7.031 mol contains 7.031 x 6.022 x 10^23 = 4.234 x 10^24 molecules. Since oxygen is diatomic, the number of oxygen atoms is 8.468 x 10^24.
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Answer:
Solution B,
A concentrated solution is one that has a relatively large amount of dissolved solute. A dilute solution is one that has a relatively small amount of dissolved solute. However, these terms are relative, and we need to be able to express concentration in a more exact, quantitative manner.
