Answer :
### Step-by-Step Solution:
#### Step 1: Convert Volume to Cubic Centimeters
The volume of the liquid is given in liters (0.630 L). To calculate density, we need the volume in cubic centimeters (cm³) because the densities of the known liquids are provided in grams per cubic centimeter (g/cm³).
1 liter (L) is equivalent to 1000 cubic centimeters (cm³).
[tex]\[ 0.630 \, \text{L} \times 1000 \, \text{cm}^3/\text{L} = 630.0 \, \text{cm}^3 \][/tex]
So, the volume of the liquid is 630.0 cm³.
#### Step 2: Calculate the Density of the Liquid
Density is calculated using the formula:
[tex]\[ \text{Density} = \frac{\text{Mass}}{\text{Volume}} \][/tex]
Given:
- Mass = 694 grams (g)
- Volume = 630.0 cm³
[tex]\[ \text{Density} = \frac{694 \, \text{g}}{630.0 \, \text{cm}^3} \approx 1.102 \, \text{g/cm}^3 \][/tex]
Rounding to 3 significant digits, the density of the liquid is:
[tex]\[ \text{Density} \approx 1.102 \, \text{g/cm}^3 \][/tex]
#### Step 3: Compare the Calculated Density with Known Densities
Now we compare the calculated density (1.102 g/cm³) to the known densities from the chemist's collection of Material Safety Data Sheets (MSDS):
- Pentane: [tex]\(0.63 \, \text{g/cm}^3\)[/tex]
- Dimethyl sulfoxide: [tex]\(1.1 \, \text{g/cm}^3\)[/tex]
- Carbon tetrachloride: [tex]\(1.6 \, \text{g/cm}^3\)[/tex]
- Stycerol: [tex]\(1.3 \, \text{g/cm}^3\)[/tex]
- Tetrahydrofuran: [tex]\(0.89 \, \text{g/cm}^3\)[/tex]
#### Step 4: Identify the Liquid
The calculated density (1.102 g/cm³) is very close to the density of dimethyl sulfoxide (1.1 g/cm³), but it's not exact when rounded to 3 significant digits. None of the known liquid densities exactly match 1.102 g/cm³ when rounded to three significant digits.
#### Conclusion
- Calculated Density: [tex]\(1.102 \, \text{g/cm}^3\)[/tex]
- Is it possible to identify the liquid?: No, because the calculated density does not match exactly with any of the provided known densities.
- Identified Liquid: None.
Therefore, based on the given data, it is not possible to definitely identify the liquid from the provided options.
#### Step 1: Convert Volume to Cubic Centimeters
The volume of the liquid is given in liters (0.630 L). To calculate density, we need the volume in cubic centimeters (cm³) because the densities of the known liquids are provided in grams per cubic centimeter (g/cm³).
1 liter (L) is equivalent to 1000 cubic centimeters (cm³).
[tex]\[ 0.630 \, \text{L} \times 1000 \, \text{cm}^3/\text{L} = 630.0 \, \text{cm}^3 \][/tex]
So, the volume of the liquid is 630.0 cm³.
#### Step 2: Calculate the Density of the Liquid
Density is calculated using the formula:
[tex]\[ \text{Density} = \frac{\text{Mass}}{\text{Volume}} \][/tex]
Given:
- Mass = 694 grams (g)
- Volume = 630.0 cm³
[tex]\[ \text{Density} = \frac{694 \, \text{g}}{630.0 \, \text{cm}^3} \approx 1.102 \, \text{g/cm}^3 \][/tex]
Rounding to 3 significant digits, the density of the liquid is:
[tex]\[ \text{Density} \approx 1.102 \, \text{g/cm}^3 \][/tex]
#### Step 3: Compare the Calculated Density with Known Densities
Now we compare the calculated density (1.102 g/cm³) to the known densities from the chemist's collection of Material Safety Data Sheets (MSDS):
- Pentane: [tex]\(0.63 \, \text{g/cm}^3\)[/tex]
- Dimethyl sulfoxide: [tex]\(1.1 \, \text{g/cm}^3\)[/tex]
- Carbon tetrachloride: [tex]\(1.6 \, \text{g/cm}^3\)[/tex]
- Stycerol: [tex]\(1.3 \, \text{g/cm}^3\)[/tex]
- Tetrahydrofuran: [tex]\(0.89 \, \text{g/cm}^3\)[/tex]
#### Step 4: Identify the Liquid
The calculated density (1.102 g/cm³) is very close to the density of dimethyl sulfoxide (1.1 g/cm³), but it's not exact when rounded to 3 significant digits. None of the known liquid densities exactly match 1.102 g/cm³ when rounded to three significant digits.
#### Conclusion
- Calculated Density: [tex]\(1.102 \, \text{g/cm}^3\)[/tex]
- Is it possible to identify the liquid?: No, because the calculated density does not match exactly with any of the provided known densities.
- Identified Liquid: None.
Therefore, based on the given data, it is not possible to definitely identify the liquid from the provided options.