The dangers in the use of coal for domestic and industrial purpose include:
- particulate emission
- ground level ozone emission
- formation of smog
- formation of acid rain
- greenhouse gas emission
<h3>What are the dangers of using coal for industrial and domestic purposes?</h3>
Coal is a fossil fuel.
Fossil fuels are fuels which are obtained from the remains of dead plants and animals which under intense heat and pressure were converted the present forms in which they exist.
The dangers in the use of coal for domestic and industrial purpose include:
- particulate emission- combustion of coal release fly ash particles into the atmosphere, which contribute to air pollution
- ground level ozone emission
- smog - the gases and particle released lead to formation of smog
- acid rain - some gases released from the combustion of coal lead to the formation of acid rain
- greenhouse gas emission such as carbon dioxide which contribute to global warming
In conclusion, the use of coal as energy source for industrial and domestic purposes results in dangers to the environment.
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A) an organism that must eat food for energy since it cannot produce it's own food
The solubility of sodium nitrate at 95º C in g/ 100 mL of water is 448.21.
<h3>Equation :</h3>
To calculate the solubility
Using formula,
Solubility = mass of the compound / mass of the solvent
Thus,
Known data is :
mass of the compound, sodium nitrate = 84.994 g/mol
mass of the solvent, water = 18.015 g/mol
C = 84.994 g/mol / 18.015 g/mol
C = 4.718 g/mol
By the temperature 95ºC
So,
C = 4.718 g/mol x 95ºC
C = 448.21 g/ 100 mL
<h3>Solubility :</h3>
The maximum amount of the sample that will dissolve in a given amount of solvent at a given temperature is referred to as its solubility. Different substances have very different solubilities, which is a characteristic of a particular solute-solvent combination.
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To remedy the stability problem, Bohr modified the Rutherford model by requiring that the electrons move in orbits of fixed size and energy. The energy of an electron depends on the size of the orbit and is lower for smaller orbits. Radiation can occur only when the electron jumps from one orbit to another.
