The adjustments to convert net income to cash flow from operations generally. involve (1) adding the amount by which an expense exceeds the related cash expenditure for the period (for deprecia-. tion, the entire amount), (2) subtracting the amount by which a revenue exceeds the related cash receipt for the period.
Gas Furnaces: Cracked Heat Exchangers. The most common reason for a natural gas furnace to leak carbon monoxide is from a crack in the heat exchanger. The heat exchanger is the metal wall or tubing that is heated up when the burners are ignited.
Making Carbon Monoxide. Carbon and oxygen can combine to form two gases. When combustion of carbon is complete, i.e. in the presence of plenty of air, the product is mainly carbon dioxide (CO 2). Sources of carbon include; coal, coke, charcoal.aking Carbon Monoxide. Carbon and oxygen can combine to form two gases. When combustion of carbon is complete, i.e. in the presence of plenty of air, the product is mainly carbon dioxide (CO 2). Sources of carbon include; coal, coke, charcoal.