Experiment 2: In the following table, use your results to record the mass of the empty test tube, the mass of the test tube and precipitate from each trial, and the mass of the precipitate that formed during each trial.

\begin{tabular}{|c|c|c|c|c|c|}
\hline
Trial & \begin{tabular}{c} Volume of \\ [tex]$CuSO_4$[/tex] (mL) \end{tabular} & \begin{tabular}{c} Volume of \\ [tex]$Na_2S$[/tex] (mL) \end{tabular} & \begin{tabular}{c} Mass of Empty \\ Test Tube (g) \end{tabular} & \begin{tabular}{c} Mass of Test Tube and \\ Precipitate (g) \end{tabular} & \begin{tabular}{c} Mass of \\ Precipitate (g) \end{tabular} \\
\hline
1 & 5 & 1 & 4 & 3 & \\
\hline
2 & 4 & 2 & 8 & k & \\
\hline
3 & 3 & 3 & & 5 & \\
\hline
4 & 2 & 4 & & S & \\
\hline
5 & 1 & 5 & & 10 & \\
\hline
\end{tabular}



Answer :

Certainly! Let's break down the information given in the problem table and fill in as much as we can from the provided results. Here, the results are given in the form:

[tex]\[ \begin{align*} (5, 1, 4, 3, -1) \\ (4, 2, 8, \text{None}, \text{None}) \\ (3, 3, \text{None}, 5, \text{None}) \\ (2, 4, \text{None}, \text{None}, \text{None}) \\ (1, 5, \text{None}, 10, \text{None}) \end{align*} \][/tex]

Now, let’s populate the table with this data. Note that "None" indicates missing values that could not be calculated.

[tex]\[ \begin{tabular}{|c|c|c|c|c|c|} \hline Trial & \begin{tabular}{c} Volume of \\ $CuSO_4(\text{mL})$ \end{tabular} & \begin{tabular}{c} Volume of \\ $Na_2S(\text{mL})$ \end{tabular} & \begin{tabular}{c} Mass of Empty \\ Test Tube (g) \end{tabular} & \begin{tabular}{c} Mass of Test Tube and \\ Precipitate (g) \end{tabular} & \begin{tabular}{c} Mass of \\ Precipitate (g) \end{tabular} \\ \hline 1 & 5 & 1 & 4 & 3 & -1 \\ \hline 2 & 4 & 2 & 8 & \text{None} & \text{None} \\ \hline 3 & 3 & 3 & \text{None} & 5 & \text{None} \\ \hline 4 & 2 & 4 & \text{None} & \text{None} & \text{None} \\ \hline 5 & 1 & 5 & \text{None} & 10 & \text{None} \\ \hline \end{tabular} \][/tex]

Here's the detailed step-by-step breakdown:

1. Trial 1:
- Volume of [tex]\( CuSO_4 \)[/tex]: 5 mL
- Volume of [tex]\( Na_2S \)[/tex]: 1 mL
- Mass of Empty Test Tube: 4 g
- Mass of Test Tube and Precipitate: 3 g
- Mass of Precipitate: [tex]\( 3 \text{ g} - 4 \text{ g} = -1 \text{ g} \)[/tex] (indicating a missing or incorrect entry for "Mass of Test Tube and Precipitate")

2. Trial 2:
- Volume of [tex]\( CuSO_4 \)[/tex]: 4 mL
- Volume of [tex]\( Na_2S \)[/tex]: 2 mL
- Mass of Empty Test Tube: 8 g
- Mass of Test Tube and Precipitate: None (no data available)
- Mass of Precipitate: None (cannot be calculated without the mass of the test tube and precipitate)

3. Trial 3:
- Volume of [tex]\( CuSO_4 \)[/tex]: 3 mL
- Volume of [tex]\( Na_2S \)[/tex]: 3 mL
- Mass of Empty Test Tube: None (no data available)
- Mass of Test Tube and Precipitate: 5 g
- Mass of Precipitate: None (cannot be calculated without the mass of the empty test tube)

4. Trial 4:
- Volume of [tex]\( CuSO_4 \)[/tex]: 2 mL
- Volume of [tex]\( Na_2S \)[/tex]: 4 mL
- Mass of Empty Test Tube: None (no data available)
- Mass of Test Tube and Precipitate: None (no data available)
- Mass of Precipitate: None (cannot be calculated without both the mass of the empty test tube and the mass of the test tube and precipitate)

5. Trial 5:
- Volume of [tex]\( CuSO_4 \)[/tex]: 1 mL
- Volume of [tex]\( Na_2S \)[/tex]: 5 mL
- Mass of Empty Test Tube: None (no data available)
- Mass of Test Tube and Precipitate: 10 g
- Mass of Precipitate: None (cannot be calculated without the mass of the empty test tube)

We have now constructed the table with the available data.