What is true about the speed of all energy in the electromagnetic spectrum?

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?

Which of the following statements about acidic water is true? a. acid has no effect on the h,o molecules. b. the solution contains a larger number of oh ions than h,o ions. c. the solution contains a larger number of h,o ions than qh ions. d. the solution contains an equal number of h,o ions and oh ions. none of the above e.

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation: