How many molecules are in 5 moles of c3h8? show set up and answer

(i feel like i know this, but i'm stuck- the molar mass of c3h8 is 44.1g)

How is the composition of a meteorite relevant to finding out the composition of earth's core?

What is driving behind plate tectonics (plate movment)? a) gravity only b) inertia c) convection and gravity d) the sun theres no option for science so i picked chemistry. plz

Compare and contrast refraction of light and sound will give brainliest