What volume of a 3.100mol. dm^-3 potassium hydroxide solution would need to be used to prepare 500ml of a 0.155mol. dm^-3 potassium hydroxide solution? Briefly explain how you would prepare the 0.154mol. dm^-3 potassium hydroxide solution in the laboratory

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;