Homework Help

I have to do 3 essays and one lab report on how to use a weather map.....I only have time to do my essays....can someone do the lab report for me?.....No mean comments please? Here's the link....please help me? http://www.glencoe.com/cgi-bin/pdfServerCA.pl/sec/science/ose/sci_rgb/2005/green/docs/chap05.pdf

Does anyone know about the scientist Muta Maathai

problem: What is the pH of a solution made by combining equal volumes of 0.100 M sodium propanoate and 0.100 M propanoic acid? (the Ka of propanoic acid (HC3H5O2) is 1.3 x 10^-5) Can I use the Henderson-Hasselbalch equation? If I do, for the [A-]/[HA] part of the equation, could I plug in (0.200 M C3H5O2- / 0.100 M HC3H5O2) ?

I have received so many mixed results in searches for this I figured I'd ask the experts. According to DEVELOPMENTAL sequence place these in the CORRECT order. Cleavage, Meosis, Blastulation, Gastrulation, Zygote, Embryo, Adult, Fertilization Is it Fertilization, Zygote, Cleavage, Embryo, Blastulation, Gastrulation, Adult, Meosis?

I'm doing this question for physics, and I'm a bit stuck. The question is: A hotel elevator ascends 200m with maximum speed of 5 m/s. Its acceleration and deceleration both have a magnitude of 1.0 m/s^2 a) How far does the elevator move while accelerating to full speed from rest? b) How long does it take to make the complete trip from bottom to top? Part a I did Vf^2 = Vi^2 +2aΔx 25 = 0 + 2(1)Δx 25/2 = Δx = 12.5 m (and I got the answer right) now part b I tried a couple of ways, I tried separating the problem after 12.5 m, so x(t) = (.5 a t^2) + Vit + Xi 200 = .5t^2 + 5t + 12.5 So quadratic is .5t^2 +5t -187.5 = 0 t = 15 s I added 5…

1) Out of 90 tins, 24 contained corns, 12 contained beans, 36 contained peas and the rest conatined mushrooms. Find the probability that Sean will have to open more than 2 tins before he finds one which does not contain baby corns. I am not very sure how to tackle this question. I thought of using complement, but I don't know what is the eact opposite of this situation. Actually I don't really understand what the question means. The answer was 0.069. 2) A box contains 6 black balls, 4 red balls and 2 yellow balls. 3 are drawn with replacement. Calculate the probability that all 3 balls are of the same colour. Why isn't it (0.5)^3 x (1/3)^3? The correct an…

I'm struggling to understand what is a proof in modular arithmetic and what does not. Example below; a = b(mod M) c=d(mod M) 1) Prove: a + c = b + d (mod M); a = b + hM c = d + kM hence; a + c = b + d (h +k)M a + c = b + d (mod M). No problem so far. Now; 1) ac = bd (mod M) ac = (b + hM)(d + kM) ac = bd + bkM + dhM + hkM^2 To me- that isnt ac = bd (mod M) -> what am I missing? Secondly; a - c = b - d + (h-k)M which to me IS a correct modular arithemtic calculation i.e. a-c=b-d (mod M). Aparantly it's not thought?

say i have a heat exchanger with a capacity of 100,000 BTU/hr. and that steam will be the heating fluid, and oil will be the process fluid. i understand how to calculate for all my needed info for the process fluid. but i am not sure how to calculate the required info for the heating fluid (steam). i want to be able to figure out how to make sure my heat exchanger is working at its full capacity, but i need to know how much steam i need to get into the system. anybody have the needed equations for this?

Does any one know or read the book:Organic chemistry 7th edition by Jonh McMurry? Is any one can help with the ? I know there's a CD with answers but it's not availabe in the shop in our city so I hope some can give me all the ANSWERS of the Addition problems, Arez-List@hotmail.com. it's my E-mail add. I'm earnest about the answers. I think every students can understand the bad feeling that you find no banchmark to check whether you've done is on the right treckor not.....That's means no matter what vast number of excises you've done might be all in vain, isn't it? Then I need you guys help..

I am slightly confused by this question. I have narrowed it down to two possibilities however. Could you explain why one is correct. Which of the following describes animals best a) Multicellular, heterotrophic, usually motile b) eukaryotic, invertebrates or vertrebrates and feeds on other organisms

Carbon tetrachloride, an organic solvent, has an enthalpy of vaporization of 29.82kj/mol. If CCl4 has a normal boiling point of 3.5x10^2K, what is its vapor pressure at 273K?(the question is written exactly how i have it on my homework)

Sulfur dioxide has an enthalpy of vaporization of 24.9kj/mol. At 205K, SO2 has a vapor pressure of 30.3mmhg. What is the normal boiling point temp of SO2?

In 1 atm of pure oxygen, the solubility of O2 in water is 1.38x10^-3 mol/L at 25 degrees celcius. The mole fraction of oxygen in air is .210. If the atmospheric pressure is 1 atm, what is the solubility of oxygen in air at 25 degrees celcius?

1) How is their digestive system dependent on their other body systems? Explain. 2) They have very complex nervous systems. Why is this structural feature necessary in Annelids? 3) What 2 things seperate Annelids from other worm types? 4) What special function do they perform in terrestrial ecosystems? 5) How is hermaphroditism important to them? 6) How do they perform respiration? If you were to disect them what things would help support this method?

Hi I have do to a science project for my school. I choose to use listerene in a boiling point separation experiment. They will let me use all of the classroom equipment, but I have to figure out EVERYTHING else (because our books aren't too specific ). I have to distell 250ml of listerene and separate the alcohol and the water out of it. How do i set up this experiment? Also fyi they said that its fine if i ask for help on science-related forums oops i meant boiling point separation.

Hi all I’m having a few problems on the questions below I was wondering if anyone would be kind enough to help me out and comment on the questions to help me construct an answer. All help is appreciated and if anyone has any good websites regarding these questions I can look at please let me know. Thanks to all who reply. QUESTION 1 What controversies and ethical issues arise from the disclosure of test results for disease-causing genes to family members? Mutations in protective, tumour suppressor genes, like BRCA1 and BRCA2, can strongly predispose individuals to cancer. Discuss the ramifications that might follow the discovery of cancer susceptibil…

I was just wondering why should we teach about Science? I'm not a science fan myself but i am gradually learning science by reading books especially biology. I will just like to ask everyone why they think children should be taught Science? what is the important? would it benefit them? or what should i t tell a child about the reason why he should like science and not to be like me. Grateful for your response

Now, I'm not quite sure where this goes but its my homework that led me to the question I have now. The original task was to do an experiment to show the relationship between amps and resistance, the resistance was made using varying lengths of wire. Now the original task went well, I showed the relationship wrote a conclusion etc. but, I measured the voltage as well and it seems to change with the different lengths of resistance wire. Now, I used the same battery each time and tried each length multiple times but the voltage has different value for each length. I would assume that the voltage would stay the same. The next day I did it again and the voltage did s…

Which of the following aqueous solutions will have the lowest vapor pressure a.).50M AlCl3 b.).60M H2SO4 c.).75M Mg(NO3)2 d.)1M NaCl e.)1M C6H12O6

I require some help please. I know : Rule: T/J = t/r = GΘ/L L = length = 0.33 r = radius = 0.025 D = diameter = 0.5 The starting points and stages would help. I have to hand this in next wednesday, i thought i would ask the community. ------ Determine the distribution of shear and angular deflection due to torsion in a circular shafts. 1-Calculate the maximum shear stress produced in the shaft due to torsion. 2- Calculate the maximum shear strain 3-Calculate the angle of twist between the two pulleys. F1 (N) 2500 F2(N) 2500 A (m) 0.1 B (m) 0.15 C (m) 0.08 D (m) 0.05 P (kw) 2 N (rev/min) 300 ---- Thanks.

This is an example out of Introduction to Linear Algebra by Gilbert Strang and I am trying to understand the solutions. So any help would be appreciated. This is the problem: every combination of v = (1,-2,1) and w = (0,1,-1) has components that add to _____. The answer is that the components of every cv + dw add to zero.

hey guys im trying to do good in science, i have a word bank of , kind of alot but if u can help me with some of the question that you might know off the top of your head that will be great. im using a book but i am having troible for the following below. here is the word bank i got Phenotype, f1 generation, heredity, dominant , recessive, homozygous, monohybrid,heterozygous, genetics, punnett square, dihybrid, genotype, carrier, codominance, testcross, incomplete dominance, traits, polygenic inheritance,multiple alleles, law of independent assortment, law of segregation ok This chart,__1______,shows possible combination of genes among offspring in a cross. W…

1) Why do people say that angiosperms co-evolved with insects? 2) In regards to a flower what are the three main roles played by the petals?

I would like to know how to do eudiometer problems . i would like if someone showed me step by step cause i dont understand any of it.

I've been given this question as a part of a revision tutorial. I've already done the calculations but was wondering if anyone could point out any glaring errors. This is not an assessed piece of work, so strictly not homework per se. The turnover number of carbonic anhydrase: Carbonic anhydrase of erythrocytes (Mr 30,000) has one of the highest turnover numbers among known enzymes, it catalyses the reversible reaction of CO2: H2O + CO2 -> H2CO3 This is an important process in the transport of CO2 from the tissues to the lungs. If 10μg of pure carbonic anhydrase catalyses the hydration of 0.30g of CO2 in 1min at 37°C at Vmax, and the reaction volume is 1m…