Homework Help

Hi, my name is Alexandra, it's my first post here at this forum, I'm a med student, now I am trying to and we gotta establish the congenital disorder in a Karyotype, but I've been on a hard time trying to order this karyotype, so I would like to get advise for making it so I can finally establish the disorder. Thanks for helping, hope I can contribute to this forum.

Difficulties in environmental protection renovation of the factory, Beijing Danske International Investment Co., Ltd. welcome experts in desulfurization, denitrition, water vapor removal, blue smoke removal, dust removal and renovation projects to propose solutions. First, the layout of the production line is two wet 2*22 m rotary kiln, which is produced by the wet process with a feed moisture content of about 35%. The maximum temperature of the sintering furnace wall in the rotary kiln is 1350 °C, and the gas is mixed gas. The total amount of smoke is about 30000m3/h. Second, the EIA prohibits external drainage and solid waste. Third, the flue gas b…

A 35.52mL aliquot of a 0.4000M of monoprotic acid HA is extracted with 20.00mL of diethyl ether. Titration of the extracted aqueous solution required 23.50mL of 0.3000M NaOH. Calculate the distribution coefficient of compound HA. This is a homework question. I just need help on how to start solving this question. Any help is appreciated.

What enthalpy change occurs when 112.0g of barium chloride, BaCl2, experiences a change in temperature from 15 degrees C to -30 degrees C? Where can you find out the molar heat capacity of barium chloride? I'm not sure how to do this since I don't know the value of the enthalpy change.

How do you solve for the rate constant in second order reaction? With the formula rate constant is equal to the rate over concentration. I read that the rate constant differs but in a first order reaction the rate constant is the same/ constant in every experiment but in asecond order, it changes.

Acc. To kelper's law, the sun is at one of the focus of the planet's path. It's an ellipse having two focus and two directrix. Do all the paths of planet, have different foci and directrix or have common focus and directrix?

I am a student of XII std and unable to get the answer for this question: A forms a CCP (cubic close packing). A atoms are in the corners, B atoms are at the alternate face what is the formula of the compound? My understanding is that A atoms : 8 x 1/8 = 1 B atoms = 3 x 1/2 = 3/2 Formula of compound = A2B3 OR A atoms : 8 x 1/8 = 1 B atoms = 6 x 1/2 = 3 Formula of compound = AB3 Is my understanding correct or which is the correct formula for the compound?

This is technically homework, but not for a grade, since this isn't for a class. This is purely so I can learn for personal interest. I'm reading a basic physics book. I am at the part where it's talking about circular motion. One example question in it asks: If you attached a string to a rock, and whirled it around in a circle, then the string broke (let's say in a counter-clockwise direction, and the string broke at the number 3), what direction would the rock go? The possibilities are: straight out from the 3, or it would continue moving in a straight line upward if seen from an overhead view. Well, I've done that a lot, and when I release something, it alway…

My function: d2f/dx2 + cf = delta(x) Condition: f is finite and f(50) = f(-50) = 0 Solution: f = C1exp(cx) + C2exp(-cx) Due to condition, f = C1exp(cx) for x<=0 and C2exp(-cx) for x>=0 f(50) = C2exp(-c*50) = 0 = > C2 = 0 Likewise, for C1 I don't know if I missed something. Also not sure if I dealt with the delta function correctly. I assumed RHS as zero for the purpose of solving the equation.

so i need to demonstrate that an equilateral triangle has got equal angles (all angles r de same) pls halp me internet is so empty about geometrical demonstrations. hav a nice day OwO

BF3 has 6 normal modes of vibration (A1', A2'', 2E'), which are made up of SALCs of 3 stretches and 3 bends. The observed bands around 1450-1500 cm^-1 in the spectrum of BF3 are assigned to asymmetric B-F stretches (E') shows marked splitting because of 10-B and 11-B abundance in natural boron. The Raman band at 888 cm^-1 assigned to the A1' symmetric B-F stretch shows no isotopic effects. Explain why only the asymmetric stretches show isotopic effects. I can't figure out why only the asymmetric stretches show isotopic effects. I think that since the frequency of symmetric stretch is the same it wouldn't show splitting. During asymmetric stretch there are two differ…

I understand that is section is for help only but I don’t know how to approach this without asking for the answer straight up Basically I’m doing a fill in the blank with a single clue and one letter filled out for my life science class. I’ve been stuck on 2 problems and couldn’t find help in the text book and decided to come here here is the stuff ”Parts working together for one purpose” _ _ _ _ _ m ”A self contained smaller unit” _ _ b _ _ _ _ _ _ thsnks for any help!

I'm working on the following problem (molecular dynamic simulation) and would like some help: Chromium is an element that is widely used as a component of biomedical implant materials. The mass of the Cr atom is 51.99, the atomic radius is 128pm, the crystal structure is BCC, the melting point is 1907 C. The molecular dynamics simulation or atomic dynamics for Cr with the number of atoms 2000, the potential is approached by Lennard Jones model with ε = 0,23 eV and δ = 2,34 A with step= 0,04 and nstep = 5000 Question: a. What is the total energy if lattice constant is 0,92a; 0,96a; a; 1,04a ; 1,08a? b. Plot the total energy vs volume supercell (V), …

Why does ferrous iron (+2) only exist in anoxic, and Fe(+3) Ferric exist in oxic environments?

69 and 70. I tried it but i am not getting the answer. 69

I cant understand where i am going wrong here. I appreciate any help.

I'm trying to figure out how to do instantaneous rates, but it seems like I need to know calculus to do this. I don't know calculus, and it wasn't listed as a prerequisite; I wasn't told the first day I need to know anything beyond basic algebra. Anyway, I'm suppose to find the "slope of a line tangent to the curve at any point." I don't really understand that. I tried searching for hours about this stuff, and I couldn't really find anything to help me; well, I tried analyzing stuff, but I couldn't see how it applied to what I was doing. The book didn't have that information. I know how to find the slope of something. But drawing this line against the curv…

prepare 40mL of a 100mM Mn solution using manganous sulfate, FW=169, in 1M HCL, this will serve as the stock solution. use the stock solution to prepare Mn standard solutions in HCL with Mn concentrations of 0, 0.025, 0.1, 0.5, and 1 mM. Prepare 40 mL of each in 50 mL centrifuge tubes. please please help. i dont want just the answer, i need to learn how to work out the problem.

Hello! We took Tin granules measured them in a crucible, with a petri dish to get the weight. We then added about 100 drops of 10M HNO3 and let that sit for 10 mins and heated it, cooled, weighed it, then repeated the heat, cool and weight again. Here's my data: Mass of petri dish, crucible, and cover: 58.771g Mass of petri dish, crucible, cover, and tin granules: 59.761g Mass of reaction after first heating: 60.024g Mass of reaction after second heating: 60.020g Here is the report question: 1.) From the mass of tin and the mass of tin oxide, calculate the mass of oxygen that combined with tin. From the masses of t…

The fish to be commercialized, has to meet four linear requirements on: weight, length, circumference. If p, l e c are weight, length and circumference, a linear condition is written as ap+Bl+yc-d=0 (a,B,y,d \in R). We acknowledge that there's no fish that can satisfy all four conditions, so we decide to edit them, adding with arithmetic to each of them a term like a,t for each i=1,...,4 where a_i are real numbers and t is the time passed since the fish has been fished. A kind of fish is the quadruplet (p,l,c,t). With this condition we are sure that at least one kind of fish exist that meets all 4 new requirements. Is it possible that there are infinite kinds of f…

I need help finding a superconductor for Flux Pinning if anyone could post a link it would be very appreciated. Thanks in advance.

What is the role of explanatory power in Science?

I am a 14 year old whos passion is physics ,mathematics, biology, chemistry,etc. ALL MANNER OF THINGS!!! And I just wanted to see if anyone knew of any good books to get me started on my education. I have a particular love for electronics and computer software. But anything else will be much appreciated. Videos and such count to. Thanks, Austin Clark

Hello there! I have a project about making a mousetrap catapult that throws medium sized marshmallows. We have to make it adjustable, and it needs to be ablate fire at a target. Do you guys have any tips? [PS. I only have small VICTORTM mousetrap]

Can u tell me if i am going right if i say that the tension in the string is 20N and that 20N is cancelled by the other 20N force i.e F so the acceleration will be zero.