How many times greater is the volume expansion coefficient of water than that of gasoline?
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How many times greater is the volume expansion coefficient of water compared to that of gasoline?
The molar mass of water is 18, while gasoline, assuming it to be C8, has a molar mass of around 112. According to the ideal gas law: if we consider 18 mL of each water and gasoline, the volume of water after evaporation will be 22.4 L. For the gasoline, the volume will be (18 mL * 0.72 g/ML) / 112 g/mol * 22.4 L = 2.59 L. Thus, the coefficient of expansion after vaporization is 22.4 / 2.59 = 8.64. This is my personal calculation; please correct me if there are any errors!
Changes in the quantitative elements of a substance caused by temperature changes. The coefficient of expansion is the slope of the expansion-temperature curve; the instantaneous coefficient of expansion is the slope at a specific temperature, while the average slope between two specified temperatures is the average coefficient of thermal expansion. The coefficient of expansion can be expressed in terms of volume or length, with length being the common unit used. The coefficient of thermal expansion of water is 2.1×10⁻⁴ °C, while that of gasoline is B1=12×10⁻⁴ °C; therefore, the coefficient of expansion of water is 2.1/12=0.175 times that of gasoline.