Hi there,

Hope you all are doing good.

I was reading a book on boilers and burners design and had a problem in understanding some part of the text which I have attached below

post problem 2.JPG

The problem is that I not comprehend the following

1. How unburnt carbon mass can be achieved by subtracting CO2 * 12/44
2. The units of the second picture are not being achieved.

If anyone can help me in this regard, i would be very glad.

Thanks in advance.