In the laboratory with the following dimensions: 5 m long, 4 meters wide and 2.5 m height. a cylinder of 10 l of CO compressed to 25,000 kPa, empties. Calculate the ambient concentration of CO will be achieved and see if they meet or exceed the values of OEL (25 ppm) or IDLH (1500 ppm).

To calculate the ambient concentration of CO, we need to use the ideal gas law equation, which states:

PV = nRT

where:
P is the pressure (in pascals),
V is the volume (in cubic meters),
n is the number of moles of gas,
R is the ideal gas constant (8.314 J/(mol·K)), and
T is the temperature (in kelvin).

To convert the volume of the cylinder (10 L) to the volume in cubic meters, we divide by 1000:
V = 10 L / 1000 = 0.01 m^3

Since the cylinder empties into the laboratory, the final volume will be the sum of the initial volume of the laboratory and the volume of the cylinder:
V_total = V_lab + V_cylinder

Substituting the given lab dimensions into the equation:
V_lab = (5 m) * (4 m) * (2.5 m) = 50 m^3

Therefore:
V_total = 50 m^3 + 0.01 m^3 = 50.01 m^3

Next, we need to convert the given pressure from kilopascals to pascals:
P = 25,000 kPa * 1000 = 25,000,000 Pa

Rearranging the ideal gas law equation to solve for n (number of moles):
n = PV / RT

Substituting the values into the equation:
n = (25,000,000 Pa * 50.01 m^3) / (8.314 J/(mol·K) * T)

Keep in mind that we need to convert the temperature to Kelvin. If the temperature is not provided, assume room temperature, which is approximately 298 K.

Finally, the ambient concentration of CO can be calculated using the moles of CO and the final volume of the laboratory:
Concentration = n / V_total

To determine if the calculated concentration exceeds the Occupational Exposure Limit (OEL) or Immediately Dangerous to Life or Health (IDLH) values for CO, we compare it to the given limits:
- OEL: 25 ppm (parts per million)
- IDLH: 1500 ppm

If the calculated concentration is higher than the given limits, it exceeds the values; otherwise, it meets the standards.