Estimate the number of occupants that are seated in an occupied university lecture hall if the room has a floor area of 175 m2, a ceiling height of 4 m, a constant ventilation rate of 1.5 per hour, and the room achieves a steady-state indoor co2 concentration of 1200 ppm. you can assume:
1) the indoor temperature is 22°c;
2) the outdoor co2 concentration is 400 ppm;
3) the building is at sea level;
4) the average per-person co2 emission rate is 21 g/hr;
5) the room is well-mixed; and
6) the ventilation rate, outdoor co2 concentration, occupancy, and indoor emissions are all constant.

the equation above shows how temperature f, measured in degrees fahrenheit, relates to a temperature c, measured in degrees celsius. based on the equation, which of the following must be true?

a temperature increase of 1 degree fahrenheit is equivalent to a temperature increase of

5

9

degree celsius.

a temperature increase of 1 degree celsius is equivalent to a temperature increase of 1.8 degrees fahrenheit.

a temperature increase of

5

9

degree fahrenheit is equivalent to a temperature increase of 1 degree celsius.

a) i only

b) ii only

c) iii only

d) i and ii only

answer:

make you upset

explanation:

answer:

what happend?

explanation: