What is the reason you can smell food cooking even when you're not in the kitchen?
A.
the particles spread from high concentration to low concentration
B.
the particles spread from low concentration to high concentration
C. the particles come together from high concentration to low concentration
D. the particles come together from low concentration to high concentration.

Which of the following words describe the reality that the universe looks the same from various perspective

What is the balance to the equation?

15) a substance used in manufacturing gasoline consists of finely divided platinum supported on an inert solid. suppose that the platinum is formed by the high temperature reaction between platinum (iv) oxide and hydrogen gas. the other product is water. a) write and balance the equation b) how many grams of hydrogen are needed to produce 1.0 g of platinum metal? c) how many moles of water are produced at the same time? how many grams? ( show work, .)