The answer is A. The pH decreases
Resources are categorized as renewable or non-renewable. A renewable resource may replenish at the rate it is being used, while a non-renewable resource has a limited supply.
<u>Explanation:</u>
<u>Renewable Energy:</u>
- It is the energy that is obtained from natural resources like sun, wind, etc..
- It is the cleanest form of energy.
- 15% of the world's total energy depends upon renewable energy.
<u>Advantages of renewable energy:</u>
- Renewable energy is free to use and it is available in the abundant quantity.
- They produce low carbon emissions and it does not affect the environment.
<u>Dis-Advantages of renewable energy:</u>
- The initial step cost much like setting up the windmill and solar panels to obtain energy.
- Solar energy needs backup during the winter season.
<u>Non-Renewable Energy</u>
- A natural resource or source of energy existing finite quantity and not capable of being replenished.
- They are not environmentally friendly and it leads to environmental issues.
<u>Advantages of Non-Renewable Sources:</u>
- The Non-Renewable Sources is considered as cheap to use.
- They produce a tremendous amount of energy
<u>Disadvantages of Non-Renewable Sources:</u>
- Non-renewable sources release toxic gases in the air when burnt which are the major cause of global warming.
Answer:
1.04 moles of AlCl₃
Explanation:
Balanced Equation: 2Al°(s) + 3Cl₂(g) => 2AlCl₃(s)
Approach => convert given data (28 g Al°) to moles. The number of moles AlCl₃ would equal the number of moles aluminum because coefficients for Aluminum and Aluminum Chloride are equal.
moles Al° = (28g)/(27g/mole ) = 1.04 mole Al°
From balanced equation moles AlCl₃ produced equals moles of Al° produced = 1.04 mole AlCl₃ because coefficients of Al° & AlCl₃.
Answer:
D
Explanation:
A covalent bond is said to be formed when two electrons are shared between two bonding atoms as in the formation of the water molecule.
P2 is 3.5 for p4= 2p2 i.e 2*3.5=7