Help please || will mark brainlest || ten pts <3 Which is true about the reaction shown above?

Group of answer choices

The reaction is a single replacement.

The reaction releases energy.

The reaction has two elements that combine to form a compound.

The reaction has negative ions in two of the compounds that switch places.

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.

If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?