Answer: A. Wladimir Koppen.
I hope that this helps you and good luck!!
~Sara
Bonds formed between atoms can be classified as ionic and covalent
Ionic bonds are formed between atoms that have a high difference in the electronegativity values.
In contrast, bonds formed between atoms that have a difference in electronegativity lower than the ionic counterparts are polar covalent bonds. If the atoms have very similar electronegativities, they form non-polar covalent bonds.
In H2S, the S atom is bonded to 2 H atoms. The electronegativity of H = 2.2 and S= 2.56. Since the difference is not high the bond formed will be covalent (polar covalent).
Answer:
Ozone layer depletion is the thinning of the ozone layer present in the upper atmosphere. This happens when the chlorine and bromine atoms in the atmosphere come in contact with ozone and destroy the ozone molecules. One chlorine can destroy 100,000 molecules of ozone. It is destroyed more quickly than it is created
Answer:
0.26 mol KNO₂
Explanation:
A buffer is defined as the mixture of a weak acid with its conjugate base or vice versa.
Nitrous acid (HNO₂) is a weak acid with pka of 3.3. Its conjugate base is NO₂⁻. KNO₂ in solution produce K⁺ + NO₂⁻. That means right answer is:
0.26 mol KNO₂.
I hope it helps!
