Response:
The accurate choice is;
Sulfur oxides linked to acid precipitation
Details:
Sulfur oxide in the atmosphere interacts with oxygen, water, and other chemicals leading to the creation of acidic precipitation known as acid rain.
Sulfur oxides react with moisture in clouds to generate sulfuric acid as follows;
The sulfur gas undergoes initial oxidation
SO₂ + OH → HOSO₂
The subsequent step involves producing sulfur trioxide
HOSO₂ + O₂ → HO₂ + SO₃
Finally, sulfur trioxide reacts with water to yield sulfuric acid
SO₃ + H₂O → H₂SO₄ (aq).
Answer:
This indicates that the enzyme is a type of protein.
Explanation:
It is important to remember that proteins are composed of vast numbers of amino acids. Because these amino acids are tiny units, they cannot function as a catalyst on their own.
However, when they form a polymer, the protein enzyme will possess varying shapes, sizes, and both physical and chemical attributes differing from a single monomer.
Additionally, for proteins to function actively, a specific number of amino acids must combine to create a distinct shape suited to interact with another molecule, thus accelerating the chemical reaction and functioning as an enzyme.
Answer:
D
Reasoning:
This is due to the belief that at one time, the galaxy was condensed into a minute spot and the Big Bang event initiated the universe's expansion, propelling galaxies outward into space, distancing them from one another. Dark energy is theorized to exert the force from the Big Bang that drives this expansion.
Different wavelengths are involved.
Explanation:
When magnesium ignites with a bright white flame, it indicates that various wavelengths are related to the electron transitions occurring in the magnesium atom.
- Upon combustion, the electrons within the atom become excited.
- They emit characteristic light that corresponds to their energy levels.
- White light consists of a mix of different wavelengths.
- Seeing white light implies that multiple wavelengths combined are responsible for the observed emission.
Learn more:
Spectrum
Answer: The correct choice is (b).
Explanation:
We have the mass of Magnesium at 97.22 g, and the molar mass of Magnesium is 24.305 g/mol.
Therefore, the calculation for the number of moles is as follows.
Number of moles = 
= 
= 4 mol
Additionally, it is known that one mole contains 
atoms/mol. Thus, we calculate the total number of atoms in 4 moles as follows.
= 
atoms
or, = 
atoms
Hence, we conclude that in 97.22 grams of Magnesium, there are atoms.
