Answer:
To many people, the distinctions between Spanish and Italian architecture are difficult to distinguish. ... Italian architecture is more feminine. It tends to highlight ornamentation with elaborate balustrades, windows and doors. Italian influence dictates an element of symmetry in the floor plan and throughout the design.Explanation:
The answer is c : modeling !
Answer:
The Stone Age. The Stone Age is the first of the three-age system of archaeology, which divides human technological prehistory into three periods: the Stone Age, Bronze Age, and Iron Age.
Explanation:
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<span>pH = pKa + log ([R-]/[RH])
Where pH is the pH of the buffer, [R-] is the concentration of the basic species, and [RH] is the concentration of the acidic species.
At pH 2.4, the amino group on glycine (pKa = 9.6) will be, for accounts and purposes, 100% protonated. This means our buffer will be dealing with the two ionic forms of the carboxyl group (pKa = 2.4).
When pH = pKa, the two species are in equilibrium. This can be seen using the HH equation:
2.4 = 2.4 + log ([R-]/[RH])
0 = log ([R-]/[RH])
1 = ([R-]/[RH])
[RH] = [R-]
Now we add in another equation, our conservation of mass.
M = [RH] + [R-]
where M is the molarity of the buffer
But since [RH] = [R-]:
M = 2 [RH]
0.2 = 2 [RH]
And we wind up with:
[RH] = [R-] = 0.1 M
Now to figure out the moles of each needed, we multiply by the volume of the buffer.
0.1 M * 0.1 L = 0.01 mol
This shows that to make 100 ml of 0.2 M glycine buffer, we'll need 0.01 mol of each species.
0.01 mol of 0.5 M HCl:
0.5 mol HCl / 1 L = 0.01 mol / v
solve for v
v/1 = 0.01 / 0.5 ==> v = 0.02 L or 20 mL
weight of glycine:
MW: 75.07 g/mol
0.01 mol glycine * (75.07g glycine / 1 mol) = 0.75 g glycine
And there's your answer
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To make this buffer you would add 0.75g glycine to 20 mL of 0.5 M HCl and fill with water until a 100mL volume was achieved.</span>
- <em>So, on a typical six-string guitar, the numerical string order goes like this:</em>
<em> E – 1st string.</em>
<em> B – 2nd string.</em>
<em> G – 3rd string.</em>
<em> D – 4th string.</em>
<em> A – 5th string.</em>
<em> E – 6th string.</em>
<em>- What is the acronym for the guitar strings?</em>
<em> EADGBE</em>
