Homework Help

Hello guys, For Chemistry we have performed a gaschromatography experiment with a nano2-gaschromatograph with nonpolar/apolar column. The stationary phase is probably a GLC but we aren't sure since we weren't informed on it and I don't know whether it'll be relevant to the question I'm gonna ask. For the experiment, we had to identify the substances in the gas of liquid lighters, and capture their retention time. Now the question we were asked: What can you change from the experiment to make the peaks (the retentiontime) of the different substances further away from each other in the chromatogram? I am still in high school so I probably know nothing about un…

The obvious answer is that there is no glycogen left, but I recall that it proceeds more slowly with time during a fast. A table in the notes shows consumption declining over time. I recall that there is some kind of control that governs this slowing of glycogen degradation, but I can't remember the name of the process, feedback, or enzyme that is responsible. I have tried Marks' Basic Medical Biochemistry, Silverthorn Human Physiology , the class notes, and Google. They were all a no go. the way the question is worded I am looking for something that acts on phosphatase 1 and phosphorylase.

1. BLANK are groups of neurons and dendrites under the brains surface? 2.Is the post sympathetic nervous system CLOSER to the CNS than the post synaptic neuron of the parasympathetic nervous system? True or False (Closer or Farther) 3. Sensory information goes through the (ANTERIOR or DORSAL horn while motor info goes through the (ANTERIOR or DORSAL? 4.In the CNS motor Output Descends BLANK and sensory input ascends along the BLANK side of the spinal cord? PLEASE HELP!!! Thank you in advance!!! ANYONE???? I NEED SOME DIRECTION!

I'm looking at P and Mo and trying to figure out how they're involved with anion/cation exchange. I am having a difficult time fully comprehending what each of these mean.

So I've read several journals about isoflavon and blood glucose, and how they tested it on diabetic rats... journals concluded that this isoflavon can lower blood glucose but I can't seem to understand how so... Can someone help explain to me briefly?? Because I read several journals, some said it's due to its estrogenic effects, but I thought oestrogen makes you gain weight instead because it's "fat"?? Like, what does it do to our blood glucose levels? I also read that it stimulates cell's response towards insulin, but can't seem to understand it completely either... I know this is not the "homework answer" kind of thing.. I just need help in understanding and a …

I have stuck to this question can you guys help me with this [/url]how to screenshot on windows

Glucose can be metabolised through glycolysis, the citric acid cycle and oxidative phosphorylation to produce energy for the body in the form of ATP. a. Calculate the net number of ATP that can be generated from four (4) molecules of glucose in the liver. Assume that this is occurring under optimal conditions. Show all workings. (150 words) Would the same number of ATP be produced if the four molecules of glucose were being metabolised in the muscle tissue? How many ATP would be generated? Please explain why this answer is different from you answer in a.

Can anybody explain me how it comes that the experiments in the video failed? https://www.youtube.com/watch?v=k2qLMPDzyEU

True or false? Thx

If the pressure of water flowing through a 5.6×10^(2) −m -radius pipe at a speed of 1.2 m/s is 2.2 × 10^(5) N/m2. Part A was What is the flow rate of the water? I was able to get this because Q=vA Part B was "What is the pressure in the water after it goes up a 4.4 −m -high hill and flows in a 4.1×10^(2)−m -radius pipe?" I don't understand Part B can anyone help me?

Ok that is the question, the first part anyways. It does not make sense due to "VOLTAGE drop" (I think?) but I do not get why it doesn't resist CURRENT? I guess I am just confused about Ohm's Law in general. I get the formula of current equals voltage over resistance but I am just super confused. Thanks in advance

Hi all, this is my first post, so please be kind Was directed here by a friend. Am currently working on a project assignment for extra credit to get into one of my preferred colleges, that comes along with a 2 page online questionnaire and am not sure of the answers of how i can simply explain it. Please see below for questions that i need help with: Q22: A reaction mixture was made basic with sodium hydroxide and the crude mixture extracted into diethyl ether. Please simply explain how this is done. A:? Q25: After the volume of the organic solvent was decreased, the remaining residue was treated with hydrogen chloride gas. Please simply explain how this …

As usual, I am having a real tough time with this... I have attached my work I have done and the questions. PV=nRT where R is a constant @ ((.08026 L) x (atm)/ (K) x (mol) ) So if I could air out my thought process here to so you guys could help me determine what I am doing wrong in my thinking. I am looking at the column of air in which the bubble passes as a prism so I can gather the volume. I know that the density of both H20 and Hg are given and are 1.025g/cm3 & 13.6g/cm3 respectively. So now that I have density I can gather some information in terms of D=(Mass/Volume) Therefore: H20 ((1.025g)/1cm3) or ((1.025g)/1mL) ((13.6g)/1cm3) or ((13.6…

Acceleration of a Mass in a Pulley System Block 1 of mass m1 slides on a frictionless plane inclined at angle θ with respect to the horizontal. One end of a massless inextensible string is attached to block 1. The string is wound around a frictionless movable pulley P of negligible mass and is also attached to the wall at the base of the inclined plane. Pulley P is connected by a second massless inextensible string to block 2 of mass m2 via a second, frictionless pulley that is fixed in place. Block 2 hangs over the end of the inclined plane (see figure). The downward gravitational acceleration is g. What is the magnitude of the acceleration of block 2 after the syste…

So, I have currently written out my equation for H2O, this being (determining molar mass): 2x(1.01)+1x(16.00) However the question also asks: "What is the mass, in grams, of 8.52 mol of the substance" How would I carry this out? Please keep in mind I'm new to all of this so please go easy on me. If you don't get what I'm asking I'm basically asking if I would add on the 8.52 or something else.

Hello, everyone Can anyone define this statement in detail? 'Anemophily’ is pollination by Wind.

hey guys, the question says... A set of numbers x, 7, 11, 5x has a mean of 9. Find the values of x and the first quartile. firstly, I got x = 3, which is right. but I got problems with finding the first quartile. btw, the answer is 5. so, what does need to be done to find the first quartile in an ungroup data, or does the answer given is wrong??? find quartile in group data seems to be easier... ;O

Let G be an n×n grid whose edges are labelled with natural numbers. Starting in the top-left corner, consider paths in G reaching the bottom-right corner by walking along edges either down or to the right. The weight of a path is the sum over all numbers encountered along the edges it traverses. Devise an algorithm in pseudo-code that computes the set of all weights of all paths reaching the bottom-right corner (you may assume standard set data structures and operations on them to be available). Give a rough estimation of the running time of your algorithm: is it polynomial, exponential, etc.? Justify your answer.

Can any one please help me solve my chemistry home work. I really appreciate help in this regard. Below is the detail: Times/Minute 30 60 120 150 240 350 480 c/(NGCMQ) 699 632 413 492 152 60 24. Determine the initial concentration. Determine the rate constant K and the order of the reaction. I will appreciate if you can include graph. Please send the answer to my email. ekorkoryiza@mwetana.com.lr. Thanks for your help

This lab makes no sense to me. The information I am given and the information I am being asked are to abstract for me to figure out this early in my understanding of these concepts. Problem is Lab and Lecture are taught by different teachers at my school. My lab professor follows the book Lab 1-9 in order. Problem is my Chem Lecture professor does not. She teaches how she wants. We just learned molarity this week. We just started it no learned that's the wrong way to say it. I barely understand it and now I'm being asked to calculate these answers and I have no idea how to do it. I'm going to scan this and attach it. Here is whaIs known that may not be apparent …

so for my DLD project i wanted to create a simple keyboard that will display alphabets small and capital with help of shift and numbers 0 to 9 along with space. i have created a circuit that will give me the desired ascii code of that character but i dont know how to display it i had an idea where i integrate it with ps2 output pin and connect it with a system equations.txt

for this question , I'm having problem with the shear stress at point E and shear stress at centorid. normally , the shear stress at the centoid will be maximum , right ? But , in my working , I found that the shear stress at the centroid is smaller than the shear stress at E. What's wrong with the working ? i get y coordinates of centorid = 66.7mm For Ixx , i get (5.00x10^-5)(m^4) , For V(shear force ) , I use (437.5x10^3) For shear stress at centroid , i use formula of $$\tau = V(Q) / It $$ so at centroid , Q = (66.67x10^-3)(160x10^-3)(66.67x10^-3 / 2 ) = 3.56x10^-4 so $$\tau $$= (437.5x10^3)(3.56x10^-4) / (5.00x10^-5)(160x10^-3) = 1.9x 10^7 Pa …

We're just beginning stoichiometry and molarity we have been on this chapter for 1 week now and this is a homework question. I have thought about how to start this problem several times so far and I have decided that I have no clue. A chemist was asked to analyze a solution of chlordane, C10H6Cl8,dissolved in a hydrocarbon solvent that was discovered by construction workers during demolition of an old work shed. This insecticide was banned for sale in the United States in 1988 by the EPA because of its potential for causing cancer. Reactions were carried out on a 2.017 g sample of the solution, which converted all of the chlorine to chloride ion dissolved in water. T…

I need help verifying my logic is correct. Basically I am trying to derive a formula for calculating the 3D normal vector to a sphere given its 2D image. If I am given the 2D picture of a sphere. I can calculate its radius, r. Here we assume an orthographic projection, meaning the sphere mapped into the 2D image plane is simply the z value dropped. Let the coordinate frame originate from the center of the sphere with z-axis pointing toward the viewer or out of the image plane, then if I select any point, (x,y), on the 2D image of a sphere, I can actually calculate the 3D normal vector to the sphere at that point from its 2D image as follows: 1. Let d be the dista…