Methane in fuel cells are not burned and therefore, help to reduce pollutants commonly associated with fossil fuel combustion.
<h3>What are fossil fuels?</h3>
Fossils fuels are fuels wgich are produced from fossils which have decomposed under intense heat and pressure over a long period of time.
Fossils fuels include:
- methane
- petrol
- kerosene
- diesel oil
- coal
Fossils fuels combustion release pollutants into the atmosphere and have greatly contributed to global warming.
Since methane in fuel cells are not burned, it will help to reduce pollutants commonly associated with fossil fuel combustion.
Learn more about fossil fuels at: brainly.com/question/79954
Iodine follows Tellurium in the periodic table of the elements due to its higher atomic number. The atomic number (the number of protons in the nucleus) of Iodine is 53, while that of Tellurium is 52. The elements are not arranged by atomic mass.
Answer:
At pH 8.59 the precipitation of acid will form.
Explanation:
The pH below which the drug will begin to precipitate can be calculated using the relation
pH =
where S = total saturation solubility of the drug
S° = solubility of the undissociated species
substituting the respective values in equation, we get:
pH = 8.59
The best way to express the concentration of a solution depends on the use of the information.
Some ways to express the concentration are: percent mass/mass, percen mass/volumen, percent volume/volume, ppm, molaritiy, molality, normality, mole fraction, among others.
If I am not going to perform a special chemical calculation (like pH or acid/base neutralization, or a colligative property) I'd probably rather to use percent mass/mass.
Percent mass/mass is an easy and intuitive way to understand how concentrated a solution is.
For example, it is easy for you to grasp that a 10% solution of NaCl has the double amount of salt than a 20% solution of NaCl.
But if you want to calculate a colligatiive property like the boiling point increase or freezing point depression of a solvent you need the molality of the solution.
And if you want to calculate the pH of a solution, you will need to know the molarity.
If you are working with very low concentrations, for example the amount of lead in a sample of a food ingredient, you'd rather work with ppm.
Each concentration measure has its own use.