Question

A substance Y has a melting point of -25°C and a boiling point of 135°C.

1) in which state of matter is Y at a)20°C and b) 250°C?
2) State which state symbol you could use for Y in a symbol equation.

Answer 1

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Answer 2

1) a) At 20°C, Y is in a solid state. b) At 250°C, Y is in a gaseous state.
2) The state symbol for Y in a symbol equation would depend on the temperature and pressure conditions of the reaction. If Y is in a solid state, (s) would be used. If Y is in a liquid state, (l) would be used. If Y is in a gaseous state, (g) would be used.