2.0 L of nitrogen gas at 480 torr is compressed into a 0.50 L container. What is the new pressure of the nitrogen gas?

The new pressure of the nitrogen gas is 2, 53 atm

Explanation:

We use te Boyle´s Mariotte law: for a certain mass of gas, at constant temperature, the pressure and volume vary inversely proportionally. We convert the unit of pressure in Torr into atm:

760 Torr---1 atm

480 Torr---x= (480 Torrx 1 atm)/760 Torr=0,632 atm

P1xV1= P2xV2

P2= (P1xV1)/V2= (0,632 atm x 2,0 L)/0,50 L=2,53 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.