Please help me with this question it’s really confusing lol. Question 19.

What’s the percent by mass of carbon in c10h14n2

What is i fracture in the crust called when land move up, down or sideways

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a.the mitochondria b.the nucleus c.the vacuoles d.the endoplasmic reticulum