The physical state of a substance at room temperature can be determined by comparing the room temperature to the melting and boiling points of the substance.

Room temperature is typically considered to be around 20 to 25 °C.

In this case, the substance melts at -25 °C and boils at 82 °C. This means that at temperatures below -25 °C, the substance is a solid. Between -25 °C and 82 °C, the substance is a liquid. And at temperatures above 82 °C, the substance is a gas.

Since room temperature (20-25 °C) falls between the melting point (-25 °C) and the boiling point (82 °C) of the substance, the substance would be in a liquid state at room temperature.

So, the answer is C. Liquid.

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The physical state of a substance at room temperature can be determined by comparing the room temperature to the melting and boiling points of the substance.

Room temperature is typically considered to be around 20 to 25 °C.

In this case, the substance melts at -25 °C and boils at 82 °C. This means that at temperatures below -25 °C, the substance is a solid. Between -25 °C and 82 °C, the substance is a liquid. And at temperatures above 82 °C, the substance is a gas.

Since room temperature (20-25 °C) falls between the melting point (-25 °C) and the boiling point (82 °C) of the substance, the substance would be in a liquid state at room temperature.

So, the answer is C. Liquid.

Knowee AI · Accepted Answer

The physical state of a substance at room temperature can be determined by comparing the room temperature to the melting and boiling points of the substance.

Room temperature is typically considered to be around 20 to 25 °C.

In this case, the substance melts at -25 °C and boils at 82 °C. This means that at temperatures below -25 °C, the substance is a solid. Between -25 °C and 82 °C, the substance is a liquid. And at temperatures above 82 °C, the substance is a gas.

Since room temperature (20-25 °C) falls between the melting point (-25 °C) and the boiling point (82 °C) of the substance, the substance would be in a liquid state at room temperature.

So, the answer is C. Liquid.

Q30 Sudha uses a substance which melts at -25 °C and boils at 82 °C. Identify the physical state of the substance at room temperature. A. gas B. solid C. liquid D. semi-solid

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