2. With regard to the pH scale, a solution with a pH A. higher than 7 is considered an acid.
B. lower than 7 is considered basic.
C. of 6 is considered neutral.
D. close to 14 is considered a strong base.

Which statement best describes how private industry decides where to spend the money on research and development

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.

Select all the correct answers. which three statements about electromagnetic radiation are true?