- #1

Zvaigzdute

- 10

- 0

## Homework Statement

Suppose we make a circular hole 2 millimeter in diameter in a balloon. Calculate the initial rate at which oxygen escapes through the hole (at 0° C), in number of oxygen atoms leaving the balloon per second.

## Homework Equations

1/4 n*A*v

## The Attempt at a Solution

1/4 n*A*v

n = N/V at # of molecules/m^3 (density)

n = 6.022e23/.0224 = 2.68839286E25

This is at STP so 22.4 L volume at one mol of gas

A = area

Pi*.0002^2*1/4 = 3.14159265 × 10-8

V = velocity

= sqrt(3*k*T/m)

=

k = boltzman constant 1.4e-23

T = 273K at STP

m = 2.65780731e-26 kg for one molecule of hydrogen

Atoms/second = 656.816755

What am I doing wrong?