PLSSS HELP ON TIMER! if 176 grams of oxygen gas occupies 20.2 L at 200.0 C, what’s the gas pressure?
A. 10.6 atm
B. 4.47 atm
C. 143 atm
D. 60.3 atm

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.

i think the answer is terrae but not 100 percent sure. ▓▬▬ §

hurricanes form in warm water