1. Define and understand sublimation and deposition.
2. Define and understand fusion in the context of phase changes.
3. Use the heat of fusion, DHfus, in calculations involving energy, masses, and moles.
1. Explain the primary difficulty with evaporation — the reason
that it is not suitable for use in modern CMOS process, which have
very small features with etched patterns that have a high aspect
ratios.?
2. Regarding the previous question — how does sputtering solve
the problem that evaporation suffers from??
3. Explain the purpose of standard clean that we used when
processing the wafers in the lab. (You need an answer that is more
detailed than “It cleaned the...
Regarding Fused Deposition Modeling (FDM)
process, answer the following questions with a detailed
explanation:
1. How and why temperature, pressure/force, and time impact the
following quality issues:
- Surface finish
- Dimensional accuracy
2. ?Identify and explain the reason behind the key processing
limits relevant to the FDM process that are based on:
- Limits of the material being
processed
- Limits of the equipment being
processed
The accompanying data on x = current density
(mA/cm2) and y = rate of deposition (µm/min)
appeared in an article. Do you agree with the claim by the
article's author that "a linear relationship was obtained from the
tin-lead rate of deposition as a function of current density"?
x
20
40
60
80
y
0.29
1.10
1.76
2.07
Find the value of r2. (Round your answer to
three decimal places.)
r2 =
Explain your reasoning.
The very high value of...
rate of evaporation
Viscosity
Solubility
color of dilute aqueous solution or pure liquids on litmus
paper
effect of aqueous solution or pure liquids on litmus paper
reaction with BaCl_2 (aq) or AgNO_3 (aq)
solubility in solvents other than water,such as ethanol
ability to decolorize a dilute solution of KMnO_4
Reaction with (NaON) or (NH_3)
Reaction with (HCI) or (NH_3)
Flammability and / or color of the flame
Mg
Al
Zn
C
S
MnO2
KMnO4
LiCl
Li2CO3
NaCl
NH4Cl
CaCl2
SrCl2...
Amyloidosis is caused by an abnormal deposition and accumulation
of protein aggregates in tissues. How do proteins adopt and
maintain a stable folded structure? What features of the protein
amino acid sequence determine the stability of the folded
structure? How does disruption of that structure lead to protein
deposition diseases such as amyloidosis, Alzheimer's disease, and
Parkinson's disease? Please respond to at least two classmates with
additional questions and comments to further the discussion.
Please no handwritten or picture responses...
How many atoms are there in 43.0 g of tin (Sn)?
Metal vapor deposition is a process used to deposit a very thin
layer of metal on a target substrate. A researcher puts a glass
slide in the metal vapor deposition chamber and coats the slide
with manganese. After deposition, the glass slide had increased in
mass by 1.70 milligrams. Approximately how many manganese atoms
were deposited on the glass slide?
A certain chocolate children's cereal contains 18.0 grams of...