An unknown substance was observed to have the following properties: colorless liquid that feels slippery, pH of 8.5, turns red litmus to blue. Based on these properties, what is the best classification of this substance? acid

base

element

salt

it’s a base

Explanation: this is because the bases have a very bitter taste but a very slippery feel at the same time leading to a substance with a ph of 8.5 and the red turning to blue so this is a base

specific latent heat of fusion, lf, of a substance is defined as the amount of heat required to change a unit mass of the substance from solid to liquid state, without any change in the temperature.

explanation:

a lot of it means it can be "burned" for energy and sold at one price. if it is scarce, the price will go up