Determine the number of moles of air present in 1.35 L at 750 torr and 17.0°C. Which equation should you use?

0.0560 mol

Explanation:

You need to use the ideal gas law equation:

P = 750 torr

V = 1.35 L

n = moles

R = 62.364 L torr

T = 17.0 ˚C + 273.15 = 290.15 K

Rearranging the equation for n:

n = 0.0560 mol

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer