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The following table shows the melting point and boiling point of several substances at standard atmospheric pressure. According to the data in the table, the following statements are correct:() The following table shows the melting point and boiling point of several substances under standard atmospheric pressure. According to the data in the table, the following statements are correct: () Melting point of lead:328°C; boiling point:1740°C Melting point of mercury:-38.8°C; boiling point:357°C Melting point of alcohol:-117°C; boiling point:78°C Melting point of toluene:-95°C; boiling point:111°C A. Lead in solid-liquid coexistence at 350°C B. Solid alcohol and toluene are not crystals C. Mercury thermometer can not be used to measure temperature in Huzhou area D. Boiling water temperature can not be measured by alcohol thermometer in Lake State area Why,
A. Lead in solid-liquid coexistence state at 328°C is not 350
B. Melting point of toluene:-95°C, with melting point, it must be crystal fault
C. The temperature in Huzhou should be higher than -38.8°C. The temperature should be measured by mercury thermometer.
D. In Huzhou area, the boiling point of alcohol is 78°C lower than that of water, which can not be measured by alcohol thermometer.
So choose D
A. Lead in solid-liquid coexistence state at 328°C is not 350
B. Melting point of toluene:-95°C, with melting point, it must be crystal fault
C. The temperature in Huzhou should be higher than -38.8°C, which can be measured by mercury thermometer.
D. In Huzhou area, the boiling point of alcohol is 78°C lower than that of water, which can not be measured by alcohol thermometer.
So choose D
A. Lead in solid-liquid coexistence state at 328°C is not 350
B. Melting point of toluene:-95°C, with melting point, it must be crystal fault
C. The temperature in Huzhou should be higher than -38.8°C, which can be measured by mercury thermometer.
D. In Huzhou area, the boiling point of alcohol is 78°C lower than that of water, which can not be measured by alcohol thermometer.
So select D
At 1 standard atmospheric pressure, toluene has a melting point of -95 degrees Celsius and a boiling point of 111 degrees Celsius. At room temperature, the main state of toluene is
A standard barometric pressure indicates that the actual temperature is above -95 degrees Celsius, so the state of toluene is liquid
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