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Metal: 1s22s22p63s23p64s2; nonmetal: 1s22s22p63s23p3
Express your answers as a cation, an anion, and a chemical formula separated by commas.
Write a net ionic equation for the overall reaction that occurs when aqueous solutions of hydrosulfuric acid (H2S) and sodium hydroxide are combined. Is this correct?

H2S + NaOH = H2O + Na2S unbalanced
H2S + 2 NaOH = 2 H2O + Na2S balanced

H2S(aq) + 2Na(aq) + 2 OH- (aq) = 2 Na (aq) + S 2- (aq) + 2H2O (l)
H2S(aq) + 2 OH- (aq) = S 2- (aq) + 2H2O (l)
Are there parts of the curve with positive slopes and parts that are flat (slope of zero)? What states of matter are present when the slope of the heating curve is positive and what states of matter are present when the slope is zero or close to zero?
Give some examples of how it might be useful to know the melting or boiling points of a substance. Think in terms of both scientific and commercial/industrial settings.
Based on your observations of acetamide when it reformed a solid after melting, does acetamide form a crystalline or amorphous solid? Explain the difference between these two terms as part of your answer.
When performing this experiment, when is the acetamide in a condensed phase? Explain your answer.
Describe what occurs to the particles of a substance when the substance melts. Explain why this occurs.
The published melting point of acetamide is 81°C, calculate the percent error between your experimental values and the published (theoretical) value. Show your work.
Describe your results for the melting point of acetamide. Were your results consistent? What was the range of values?
In the following neutralization reaction between an acid and base, hydrochloric acid (aq) + sodium hydroxide (aq), write the molecular equation, total ionic and net ionic equations, respectively. What are the spectator ions if there are any?
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