Atmosphene scientists ofien use mixing ratios to express the concentrations of trace compounds in ar. Mixcing ratios are often expressed as ppmv (parts per million volume) vol of X at STP x 10 total vol of air at STP ppmv of X = On a certain November day, the concentration of carbon monoxide in the air in downtown Denver, Colorado, reached 2.5 x 10 ppmv. The atmospberic pressre at that time was 635 torr and the temperature was 0°C. a. What was the partial pressure of CO? Partial pressure torr b. What was the concentration of CO in molecules per cubic meter Concentration= molecules/m c. What was the concentration of CO in molecules per cubic centimeter Concentration molecules/cm

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Chapter1: Chemical Foundations
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Atmosphenc scientists ofen use mixing ratios to express the concentrations of trace compounds in an. Mixing ratios are often expressed as ppmv (parts per million
volume):
vol of X at STP
ppmv of X =
x 10
total vol of air at STP
On a certain November day, the concentration of carbon monoxide in the air in downtown Denver, Colorado, reached 2.5 x 10 ppmv. The atmospberic pressure at
that time was 635 torr and the temperature was 0°C.
a. What was the partial pressure of CO?
Partial pressure
torr
b. What was the concentration of CO in molecules per cubic meter
Concentration
molecules/m
c. What was the concentration of CO in molecules pet cubic centimeter
Concentration
molecules/cm
Transcribed Image Text:Atmosphenc scientists ofen use mixing ratios to express the concentrations of trace compounds in an. Mixing ratios are often expressed as ppmv (parts per million volume): vol of X at STP ppmv of X = x 10 total vol of air at STP On a certain November day, the concentration of carbon monoxide in the air in downtown Denver, Colorado, reached 2.5 x 10 ppmv. The atmospberic pressure at that time was 635 torr and the temperature was 0°C. a. What was the partial pressure of CO? Partial pressure torr b. What was the concentration of CO in molecules per cubic meter Concentration molecules/m c. What was the concentration of CO in molecules pet cubic centimeter Concentration molecules/cm
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