객관식
What is the density of mercury at room temperature, expressed in g/cm^3?
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1. Intro to General Chemistry
Density
객관식
Which of the following is closest to the density of freshwater at room temperature (approximately 20°C)?
A
2.50 g/cm^3
B
0.78 g/cm^3
C
0.50 g/cm^3
D
1.00 g/cm^3
검증된 단계별 안내1
Recall that density is defined as mass per unit volume, expressed as \(\text{density} = \frac{\text{mass}}{\text{volume}}\).
Understand that the density of pure water at room temperature (around 20°C) is a well-known standard value used in many chemistry calculations.
Remember that the density of freshwater at 20°C is approximately 1.00 g/cm\(^{3}\), meaning 1 gram of water occupies 1 cubic centimeter of volume.
Compare the given options to this standard value: 2.50 g/cm\(^{3}\) is much too high, 0.78 g/cm\(^{3}\) and 0.50 g/cm\(^{3}\) are significantly lower than the known density of water.
Conclude that the value closest to the density of freshwater at room temperature is 1.00 g/cm\(^{3}\).
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