The average gas-oil ratio produced from the Upper Washita Fredericksburg formation of the Summerland Field is 275 scf/STB. The gravity of the produced oil is 26°API. The color of the stocktank oil is black.
a). What type of reservoir fluid is in this formation?
b). Laboratory analysis of a sample from the Summerland (Upper Washita-Fredericksburg) Field indicates a ratio of volume oil leaving the reservoir to volume of oil arriving at the stock tank of 1.10 res bbl/STB. Does this information confirm your answer to 1)? Why or why not?
In: Chemistry
Which of the following solvent pairs could be used in a solvent pair recrystallization (in general, not for this specific reaction)? For those selected, briefly explain why. For those not selected, briefly explain why not:
a) Ethyl acetate and hexane
b) Water and diethyl ether
c) Methanol and methylene chloride
In: Chemistry
Iron can exist in several crystal structures including BCC and FCC. Given the radius of iron is 126 pm for iron for the following conditions and draw the directions and/or planes:
Calculate the planar atom density for the following:
BCC lattice structure on (101)
FCC lattice structure on (101)
BCC lattice structure on (010)
FCC lattice structure on (010)
In: Chemistry
Given 1L of 0.1M stock solutions of NaH2PO4 and Na2HPO4, and ample water, describe in as much detail as possible how you would go about making a 0.05M solution of phosphate buffer with a pH=6.75?
In: Chemistry
What is the boiling point of a mixture composed of 85.0 g HOCH2CH2OH (ethylene glycol) and 185 g H2O? The boiling point elevation constant for H2O is 0.512 °C/m.
In: Chemistry
Calculate theoretical density of: A) MgO B) Ni
Use rNi = 0.06 nm , rMg = 0.07 nm, rO = 0.14 nm for calculations.
Please show all the work!
In: Chemistry
In: Chemistry
Using CO as an example, explain the differences in MO theory bonding and VSEPR theory bonding.
In: Chemistry
In: Chemistry
on your own words explain reaction and influence in the UV-vis spectrum
how does benzonphenone affects the spectrum of ethanol and why? (benzonphenone in ethanol)
how does benzonphenone affects the spectrum of cyclohexane and why? (benzonphenone in ethanol)
how does benzonphenone affects the spectrum of n-hexane and why? (benzonphenone in n-hexane )
how does benzonphenone affects the spectrum of methylene chloride and why? (benzonphenone in methylene chloride)
In: Chemistry
Find the Net ionic Equation of: Ba(NO3)2 (aq) + Pb(NO3)2 (aq) --> ???
In: Chemistry
1) Predict (write the sequences of) the fragments that would be generated from the treatment of
the following peptide
Gly-Ala-Trp-Asp-Arg-Lys-Ala-Glu- Gly-Phe-Gln
with:
a) trypsin (4 pnts)
b) chymotrypsin
c) pepsin
2) A certain protein has an α-helix which is 18 residues long with the sequence shown below.
It is known that hydrogen bonding through the backbone H-bond donor/acceptor groups
stabilizes most of the structure. Show what other interactions would help stabilize the helix
by drawing lines (or brackets) between the interacting amino acid residues and naming the
type of interaction involved.
Q L A N R Y R T D L E Q K W Q N E P
In: Chemistry
The formula for the oxyanion ortho-arsenite is AsO33-. The charge minimized Lewis structure gives an AsO bond order of _______ per AsO bond and _______ (obeys or disobeys) the octet rule. This puts a formal charge of _______ on each _______ atom. According to VSEPR, the shape of the electron groups is _______ and the molecule itself can be considered _______. The bonds in the molecule are _______ (polar or nonpolar) and the molecule itself is _______ (polar or nonpolar).
In: Chemistry
In the early 1990s, fusion involving hydrogen dissolved in palladium at room temperature, or cold fusion, was proposed as a new source of energy. This process relies on the diffusion of H2 into palladium. The diffusion of hydrogen gas through a 0.005-cm-thick piece of palladium foil with a cross section of 0.780 cm2 is measured. On one side of the foil, a volume of gas maintained at 298 K and 1 atm is applied, while a vacuum is applied to the other side of the foil. After 24 h, the volume of hydrogen has decreased by 14.2 cm3 . What is the diffusion coefficient of hydrogen gas in palladium?
In: Chemistry
A chemical plant produces an ammonia-rich waste gas that cannot be released as-is into the environment. One method to reduce the ammonia concentration in the waste gas is to bubble the waste gas through a liquid solvent. Components of the gas that are highly soluble, like ammonia, will dissolve into the liquid phase. Water is an appropriate liquid solvent for this process.
The chemical plant produces 125.0 m3/hr of waste gas (ρ = 0.0407 mol/L) initially having a mole fraction of 0.190 NH3, and wishes to remove 90.0% of the initial amount of NH3. The maximum concentration of ammonia in water at this temperature is 0.4000 mol NH3/ mol water. Neglect the absorption of other waste gas components into the water, and the evaporation of water into the waste gas stream.
a) What rate is NH3 is being removed from the feed gas (in mol/hr)?
b) What is the minimum flow rate of water (ρ = 0.990 g/mL) required to scrub out 90.0% of the incoming NH3 (in L/hr)?
c) What is the mole fraction of NH3 in the scrubbed waste gas stream?
(I need show works plz)
In: Chemistry