Answer:
It is heterogeneous as it is made up of visibly different substances or phases.
Oxygen and selenium both have 6 valence electrons. They're in the same group hope this helps
Answer:
B.) Go down
Explanation:
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In this case, a strong base like NaOH has a high pH based on the scale wherein 7 is neutral, above 7 is basic and below 7 is acid. In such a way, by adding an acid, having a low pH, once it is added, the pH will go down until the equivalence point, which for strong base and strong acid should be 7.
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For which of the following conversions does the value of the conversion factor depend upon the formula of the substance?
The answer is C
