Ammonia is a gas for which reliable annalytical methods are available to determine its concentration in other gases. TO Measure flow in natural gas(NG) pipeline pure ammonia gas is injected into pipeline at a constant rate of 72.3kg/min five miles downstream from injection point , the steady state ammonia concentration is found to be 0.382 weight percent .The gas upstream from the point of ammonia injection contains no measurable ammonia . How many kilograms of natural gas are flowing through the pipeline per minute?
