3.16 X 10^-11 M is the [OH-] concentration when H3O+ = 1.40 *10^-4 M.
Explanation:
data given:
H30+= 1.40 X 10^-4 M\
Henderson Hasslebalch equation to calculate pH=
pH = -log10(H30+)
putting the values in the equation:
pH = -log 10(1.40 X 10^-4 M)
pH = 3.85
pH + pOH =14
pOH = 14 - 3.85
pOH = 10.15
The OH- concentration from the pOH by the equation:
pOH = -log10[OH-]
10.5= -log10[OH-]
[OH-] = 10^-10.5
[OH-] = 3.16 X 10^-11 is the concentration of OH ions when hydronium ion concentration is 1.40 *10^-4 M.
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Answer: A bond in which the electromagnetically difference between the atoms is between 0.4 and 1.7 is called a polar covalent bond.
Explanation:
There you go.... your welcome
Answer:
a) Mg and S = atoms
b) H2 SO3 = molecules
c) HBr =molecule
Explanation:
Step 1: Data given
Atoms = An atom is the smallest constituent unit of ordinary matter that constitutes a chemical element. We can find them on the periodic table.
Molecules = A molecule is an electrically neutral group of two or more atoms held together by chemical bonds.
a. Mg S = Magnesium and sulfur both are atoms, we both can find them on the periodic table
b. H2 SO3 = H2 is a molecule that contains 2 hydrogen atoms
SO3 is a molecule that contains 1 sulfur atoms and 3 oxygen atoms
c. HBr = HBr is a molecule that contains 1 hydrogen and 1 bromine atom
