Answer:
The correct answer is: <em>They each partially describe the bonding in a molecule.</em>
Explanation:
Some chemical molecules cannot be described completely by using only one Lewis structure. In these cases, we can describe the molecule by drawing 2 or more Lewis structures, and the structures are called <u>resonance structures</u>. The overall molecular structure is explained by all the resonance structures together. So, they each describe the bonding in the molecule only partially.
Answer:
acid: sulphuric acid (H2SO4)
base: sodium hydroxide (2NaOH)
Explanation:
Answer:
A, Vapor pressure is very high
Answer:
0.125 mole
Explanation:
From Avogadro's hypothesis, we discovered that 1 mole of any substance contains 6.02x10^23 atoms.
The statement above suggests that 1 mole of chromium contains 6.02x10^23 atoms.
Now, if 1mole of of chromium contains 6.02x10^23 atoms,
Then Xmol of chromium contains 7.52x10^22 atoms i.e
Xmol of chromium = 7.52x10^22/6.02x10^23
Xmol of chromium = 0.125 mole
Therefore, 0.125 mole of chromium contains 7.52x10^22 atoms
Answer:
A) HCl > HClO > HBrO > HIO
Explanation:
The strength of an acid is related to the acid dissociation constant (Ka). This is the equilibrium constant for an acid. The higher the Ka, the stronger the acid.
An easier way to compare the strength of acids is through their pKa, where
pKa = -log Ka
The lower the pKa, the stronger the acid.
Let's consider the following acids and their pKa values:
HCl -7
HClO 7.54
HBrO 8.62
HIO 10.64
The order of decreasing acid strength is:
A) HCl > HClO > HBrO > HIO
