Which equivalence factor should you use to convert from 106 grams of o2 to moles of o2? a.(1 mol o2/16.00 grams o2) b.(16.00 grams o2/1 mol o2) c.(1 mol o2/32.00 grams o2) d.(32.00 grams o2/1 mol o2) pls for exam

C. (1 mol O2/32.00 g O2)

To convert 106 g O2 to moles of O2, the equivalence factor is either

(1 mol O2/32.00 g O2) or (32.00 g O2/1 mol O2). We choose the one that has the desired units (mol) on top: (1 mol O2/32.00 g O2). Then,

Mass of O2= 106 g O2× (1 mol O2/32.00 g O2) = 3.31 mol O2

Notice that the unwanted units (g O2) cancel and do not appear in the answer.

“A. (1 mol O2/16.00 g O2)” is incorrect because it uses the molar mass of O (not O2).

”B. (16.00 grams O2/1 mol O2) is incorrect because it uses the wrong molar mass for O2.

“D. (32.00 g O2/1 mol O2)” is incorrect because it has the equivalence factor upside down.

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.