fuel impurities
71Radioactive waste — 2007 ISO radioactivity danger logo, designed in part for long term radioactive waste depositories which might survive into a far future time in which all knowledge of the meaning of present common radiation danger symbols and signs has been lost… …
72Hydrogen vehicle — A hydrogen vehicle is a vehicle that uses hydrogen as its on board fuel for motive power. The term may refer to a personal transportation vehicle, such as an automobile, or any other vehicle that uses hydrogen in a similar fashion, such as an… …
73Ethanol — For other uses, see Ethanol (disambiguation). Grain alcohol redirects here. It is not to be confused with Neutral grain spirit. Ethanol …
74Silicon — Not to be confused with the silicon containing synthetic polymer silicone. aluminium ← silicon → phosphorus C ↑ Si ↓ Ge …
75Neon sign — …
76Cooling tower — Natural draft wet cooling hyperboloid towers at Didcot Power Station, UK …
77Nobel Prizes — ▪ 2009 Introduction Prize for Peace The 2008 Nobel Prize for Peace was awarded to Martti Ahtisaari, former president (1994–2000) of Finland, for his work over more than 30 years in settling international disputes, many involving ethnic,… …
78Distilled water — Bottle for Distilled water in the Real Farmacia in Madrid. Distilled water is water that has many of its impurities removed through distillation. Distillation involves boiling the water and then condensing the steam into a clean container.… …
79Coal — Sedimentary Rock Anthracite coal Composition Primary carbon Secondary hydrogen, sulfur …
80Kerosene — Kerosene, sometimes spelled kerosine in scientific and industrial usage, [Webster s New World College Dictionary, kerosene .] is a combustible hydrocarbon liquid. The name is derived from Greek keros (κηρός wax). The word Kerosene was registered… …
