Amixture is -
a. a chemical combination of two or more different materials.
b. a physical combination of two or more different materials.
c. a precipitate and its solution.
d. a single element

How do limiting factors most affect population size? ostop population growthrestrict population growthincrease population sizeresult in positive impactso

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, .)

Explain why the epa is not present as defined by weston wilson