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A sample of a molecular substance starting as a gas at 206°C and 1 atm is allowed to cool for 16 minutes. This process was performed at a constant pressure of 1 atm and is represented by the cooling curve below. What is the dependent variable in the experiment?

• Time
• Temperature
• Pressure
• Cooling

What pieces of lab equipment are best used to determine the volume of a substance?

• Beaker and Graduated Cylinder
• Graduated Cylinder and Test Tube
• Flask and Ruler
• Graduated Cylinder and Ruler

What is this equipment called?

• graduated cylinder
• test tube
• flask
• beaker

What is this equipment called?

• graduated cylinder
• test tube
• flask
• beaker

What is this equipment called?

• graduated cylinder
• test tube
• flask
• beaker

What is the correct reading for this ruler?

• A. 26 cm
• B. 26.4 cm
• C. 26.6 cm
• D. 27 cm

What is the correct reading of this graduated cylinder?

• A. 2.71 mL
• B. 2.76 mL
• C. 2.81 mL
• D. 2.86 mL

What is the density of tungsten in grams per cubic centimeter if a 4 g sample has a volume of 0.207 mL?

• 0.05 g/mL
• 0.828 g/mL
• 1 g/mL
• 19.32 g/mL

What is the mass of rhodium in grams of a 0.161 mL sample if its density is 12.4 g/mL?

• 0.013 grams
• 2 grams
• 6.2 grams
• 77 grams

What is the volume of germanium in cubic centimeters of a 0.8 g sample if its density is 5.32 g/cm^3?

• 0.15 cm^3
• 0.8 cm^3
• 4.256 cm^3
• 6.65 cm^3