This is the US Dollar (USD) to South African Rand (ZAR) exchange rate history summary page, detailing 180 days of USD ZAR historical data from Thursday 16/04/2015 to Sunday 11/10/2015. Highest: 14.0681 ZAR on 28 Sep 2015.
Carbon monoxide (CO) is a colorless, odorless deadly gas. Because you can't see, taste, or smell it, carbon monoxide can kill you before you know it's there.Everyone is at risk for carbon monoxide poisoning.arbon monoxide is a by-product of combustion, present whenever fuel is burned. It is produced by common home appliances, such as gas or oil furnaces, gas refrigerators, gas clothes dryers, gas ranges, gas water heaters or space heaters, fireplaces, charcoal grills, and wood burning stoves.
1)HC - Hydro carbon or unburned gasoline. This is what you smell. Raw gas. It comes out the tailpipe just like it went in the fill pipe at the gas station. 2) CO - Car â¦ bon Monoxide or partially burned gasoline molecules. The BAD stuff.