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What are the three best fuels that can be easily accessible, promote clean…

- - - - India has an extensive amount of major problems such as poverty, gender discrimination, terrorism and unemployment and is not ideal to facilitate resources to produce unique fuels
    - - South America
        
        Main economy is agriculture and mining, making it ideal for the investigation. Additionally, has rainy, tropical climate which is beneficial for the production of raw crops
        
        Brazil
        
        Brazil is home to the Amazon rainforest, the largest tropical rainforest. Crops will be readily available due to the perfect climate and fertile soil Brazil has
        
        Therefore Brazil will be investigated
    - - Only recently implementing new and cleaner sources of energy and fuel including wind power and hydropower
    - - Japan rely heavily on gas supply as their fuel sources meaning new infrastructure is required as opposed to liquid and solid fuels
- - - - To measure the energy released in the combustion of fuels
        
        Apparatus is easily accessible within a high school setting
        
        Therefore a simple calorimetry will be utilised
      - Variables
        
        Independent variable is the type of fuel
        
        Dependent variable is the specific energy
        
        Controlled variables are the position of metal can, calorimeter apparatus set up, source of substances
    - - Used to study molecular interactions and binding affinities between biomolecules
        
        Requires complex equipment and is time consuming
        
        Inappropriate choice for a high-school practical
    - - Complex for high-school environment and expensive
- - - - Gas fuels will therefore not be used
  - - - Fossil Fuels
        
        They are non-renewable and unsustainable meaning they are not an ideal choice as the question states it must promote clean emissions
      - Biomass fuels
        
        Vegetable oil
        
        Soybean oil
        
        Most abundant crop in Brazil due to being the world's largest soybean producer
        
        Palm oil
        
        There are environmental concerns with the expansion of palm oil plantations, so not an appropriate oil
        
        Canola Oil
        
        Highly abundant crop-derived oil in Brazil so it is easily accessible
        
        Rice Bran oil
        
        Highly abundant crop-derived oil in Brazil and is a by-product of agriculture
    - - Diesel
        
        Can be produced through the conversion of coal, natural gas, or biomass into liquid hydrocarbons
      - Methanol
        
        Is a versatile synthetic liquid fuel that can be produced through various methods such as the distillation of wood which is highly abundant in Brazil due to its rainforest
      - Bioethanol
        
        Produced from anaerobic fermentation of carbohydrates. Can be derived from sugarcane, corn or wheat which are all highly abundant crops in Brazil, meaning it is a very appropriate choice.
  - - - Wood Pellets
        
        Can be made from compressed sawdust or wood shavings and is sustainable. It is easily accessible as Brazil's forest covers almost 56% of the country's area
      - Coal
        
        Coal is the most polluting way to produce electricity meaning it is not ideal to use
      - Cow Manure
        
        Easily accessible as Brazil have the second largest cattle herd worldwide
      - Rice husks
        
        Easily accessible as it is derived from agricultural residue
    - - Charcoal
        
        A much more environmentally friendly alternative for coal. It can be made from peat, wood or a coconut shell which are easily accessible in the Amazon Rainforest