Answer
Liquid
Work Step by Step
To determine whether phosphorus would be a liquid or a solid at the recorded temperature of $134.8^\circ$F, we need to compare that temperature to the melting point of phosphorus.
We know that the melting point of phosphorus is $44^\circ$C. To convert this to Fahrenheit we can use the formula: $$F = \frac{9}{5}\cdot C + 32.$$ We have: $$F = \frac{9}{5}\cdot 44+ 32 = 111.2^\circ.$$As the recorded temperature of $134^\circ$F is greater than the melting point of 8$111.2^\circ$F, phosphorus would be in liquid state at that temperature.
