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

Zeros that follow non-zeros numbers and are also to the right of a decimal point are significant

An equinox occurs when a. neither end of earth's axis is tilted toward or away from the sun. b. the north end of earth's axis is tilted away from the sun. c. the north end of earth's axis is tilted toward the sun. d. earth's axis is parallel to the sun's rays. select the best answer from the choices provided a b c d

Hen a gfci receptacle device is installed on a 20-ampere branch circuit (12 awg copper), what is the minimum volume allowance (in cubic inches) required for conductor fill for each conductor in the outlet box?