It releases CO2 into the air (CO2 is carbon dioxide) which destroys the Ozone layer
Why is coal in such great demand?
Coal is in great demand because it is a cheap and abundant source of energy, particularly in countries with high electricity needs. It is also used in industries such as steel production and cement manufacturing. Despite growing concerns about its environmental impact, coal continues to be a key contributor to global energy supply.
What impurities are found coal?
Coal can contain impurities such as sulfur, nitrogen, ash, and trace elements like mercury and arsenic. These impurities can have environmental and health impacts when coal is burned for energy production.
To light a 100 W light bulb, you need to generate 100 W of power. If the power plant is 30% efficient, you need 100/0.30 = 333.33 W of input power. Since coal has 30E6 J/kg of energy, you would need 333.33 W/30E6 J/kg = 0.0111 kg of coal to light the 100 W bulb.
What is a soft coal that burns at lower temperatures?
Lignite is a type of soft coal that burns at lower temperatures compared to other coals such as bituminous or anthracite. It has a lower carbon content and higher moisture content, making it less dense and easier to ignite.
Why is alternative to alternative to coal?
Biomass can be regrown quickly, making it a good alternative to coal.
Can you compare and contrast the formation of coal and the formation of oil?
Coal forms from the compaction and heating of plant material over millions of years, primarily in swampy areas. Oil is formed from the decomposition of marine organisms, like plankton, under high pressure and temperature deep within the Earth's crust. Both processes involve organic matter transforming into energy-rich substances, but coal originates from land plants while oil primarily comes from marine life.
Coal may need to be imported if a country does not have sufficient domestic coal production to meet its energy needs. Factors such as high demand, lack of suitable coal reserves, or inaccessibility of coal resources could contribute to the need for importing coal. Additionally, some countries may import coal to supplement their energy sources and ensure energy security.
Coal does not react with hydrochloric acid (HCl) as it is a non-metallic substance and does not contain any active metals that can react with acids.
How coal formation happens in every stage?
Coal is not a mineral because it does not have a crystalline structure, which is a key characteristic of minerals. Instead, coal is a naturally occurring organic sedimentary rock made up of the remains of plants and animals that have undergone compaction and chemical changes over millions of years.
How is coal turned into energy?
Coal is burned to heat water and produce steam, which then drives turbines connected to generators. These generators convert the mechanical energy into electrical energy. This process is a common way to generate electricity in coal-fired power plants.
What useful things can we make with of coal?
Coal can be used to generate electricity, produce heat for industrial processes and residential heating, and as a feedstock in the production of synthetic fuels like gasoline and diesel. It is also used in the production of steel and cement.
Which element is found in coal and diamond?
Both coal and diamond contain the element carbon. However, the arrangement of carbon atoms in coal and diamond differs, leading to their vastly different properties.
What does burning high sulfur coal combine with?
Burning high sulfur coal combines with oxygen in the air to produce sulfur dioxide gas. When sulfur dioxide reacts with water vapor in the atmosphere, it forms sulfuric acid, which contributes to acid rain.
How is energy conversions involved in the formation of coal?
Coal formation involves the conversion of solar energy into chemical energy through the process of photosynthesis in plants. Over millions of years, this stored chemical energy is further converted into coal through the accumulation and compression of plant matter in the Earth's crust, turning potential energy into stored energy in the form of coal.
What are the main components of coal?
The main components of coal are carbon, hydrogen, oxygen, nitrogen, and sulfur. The composition and amount of each component vary depending on the type of coal, with carbon being the dominant element in coal.
How many joules in a kg of coal?
On average, coal has an energy content of about 24,000,000 joules per kilogram. This energy content can vary depending on the type and quality of the coal.
Why must coal be heated in the absence of air to change into coke?
Coal needs to be heated in the absence of air to turn into coke because oxygen in the air would react with the coal and burn it, preventing the transformation into coke. Heating the coal in the absence of air allows the volatile components to be driven off, leaving behind a more solid and pure carbon structure, which is coke.
Is carbon a material coal primarily made of?
Yes, carbon is a primary component of coal. Coal is mainly made of carbon along with small amounts of other elements such as hydrogen, oxygen, sulfur, and nitrogen.
Black coal is a type of coal that is dark in color and is primarily composed of carbon. It is commonly used as a fuel source for generating electricity and in industrial processes due to its high energy content.
Oil and coal are primarily used as fuel sources for generating electricity, heating buildings, and powering vehicles. They can also be used in various industrial processes to create products such as plastics, fertilizers, and chemicals. However, their use contributes to greenhouse gas emissions and environmental pollution, leading to negative impacts on climate and public health.
What material is coal primarily made of?
Coal is primarily made of carbon, along with varying amounts of hydrogen, sulfur, oxygen, and nitrogen. It is formed from the remains of prehistoric plants that have been subjected to heat and pressure over millions of years.
What is the first form of true coal in the process of coal formation?
The first form of true coal in the process of coal formation is peat. Peat is a precursor to coal and is formed from partially decomposed plant material in waterlogged conditions. Over time, with increased pressure and heat, peat transforms into lignite, and with further burial and heating, lignite develops into higher-grade coals like bituminous coal and anthracite.
What factors determine the type of coal that forms from buried plant material?
The type of coal that forms from buried plant material is primarily determined by the amount of pressure and temperature the plant material is subjected to during the coalification process. Factors such as the type of plant material, the depth of burial, and the geological conditions play a role in determining the quality and type of coal that is formed (e.g., lignite, bituminous, anthracite).