What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5

If a planet rotates 360 degrees during a 24 hour time period, what does that tell us about the planet? a. the middle of the planet is in darkness b. the seasons on the planet vary every day. c. the planet runs on a 12-hour time clock. d. the temperature on the planet varies daily.

Fission of uranium-235 products energy and a. isotopes of smaller elements b. isotopes of larger elements c. lighter isotopes of uranium d. heavier isotopes of uranium

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.