Tuesday

June 28, 2016
Total # Posts: 661

**chemistry**

given 40.0g of iron, how many grams of iron II oxide are produced.
*December 15, 2009*

**7th grade science **

If an organism expresses a recessive phenotype can you tell the genotype? Explain, include one example in your response.
*December 15, 2009*

**7th grade science **

What is an example of genetic engineering helping people ?
*December 15, 2009*

**info**

What does Kamloops mean in native dialect?
*December 13, 2009*

**science**

compare inheritance by multiple alleles and polygenic inheritance
*December 10, 2009*

**Math**

Laurie expects to make $100,000 in 2007. Her social security tax rate is 6.20% up to the wage base, Medicare is 1.45%. How much FICA is Laurie expected to pay for the year?
*December 8, 2009*

**science **

compare and contrast mitosis and cell divison
*November 21, 2009*

**science**

how is Dna copied?
*November 21, 2009*

**7th grade science **

name two scientest who studied inherited genetics and what they used for research and why
*November 17, 2009*

**7th grade science **

name 2 scientest who inherited traits
*November 17, 2009*

**Chemistry (physical)**

At room temperature (25 degrees C) butane is a mixture of 72% anti and 28% gauche conformations. Calculate the difference in energy between the gauche and anti confromations. This is how I calculated it but I am not sure I am right: Boltzmann equation: N2/N1 = exp(-(E2-E1)/RT...
*November 8, 2009*

**Healthy Decision Making**

1.Wear a seatbelt in car 2.Don't play with fire 3.Wear a helmet when biking,etc. 4.Always have your shoelaces tied
*November 1, 2009*

**science**

Mitosis: Number of chromosomes in cells production Meiosis: Number of chromosomes in cells production.
*October 27, 2009*

**Quotes**

Awesome:-) these quotes are really good. I'd love to see more from others. please keep posting, thanks.
*October 17, 2009*

**Quotes**

I would like to know everyone's favorite quotes. My favorite quote is: This is a miracle that happens everytime to those who really love; the more they give,the more they possess. Out of all the quotes, I have to pick top 6, and then everyone in my class will vote for the ...
*October 17, 2009*

**philosophy**

what are your answers?
*October 17, 2009*

**english**

not illusory
*October 17, 2009*

**7th grade**

can you post those vocabulary words on here, maybe I can help.
*October 17, 2009*

**Riddles**

I would just like to know that say I need help on a riddle urgently, would i post it on Net Riddle to recieve help?
*October 17, 2009*

**Twilight**

I have to do this writing assignment on anyone I want to. I really like Bella from the movie twilight so i am doing this on her. I have to describe her and all. I already know how she is from my point of view, but I would like to know how she is from yours. so please describe ...
*October 12, 2009*

**Twilight**

thanks, more ratings will be appreciated from others
*October 12, 2009*

**Twilight**

I would like to know everyone's opinion on Twilight. rate from 0 to 5. We are supposed to pick one topic, it can be on anything, so I chose twilight. I just need the average rating,thanks.
*October 12, 2009*

**math**

Kevin makes $5.25 per hour he worked 18.25 hours. What is the best estimate of the amount of money he made? Do you just divide the 2 numbers?
*October 12, 2009*

**Math**

Faryi averaged 50 mph on trip to visit an amusement park 80 miles away and started with a full tank of gas. Her car usually averaged 25 mph each time she purchased. The gas price $2.65 par gallon when she got home. Calculate Faryi’s time ( in minutes) and the cost to fill...
*October 11, 2009*

**math**

In the year 1910, many people immigrated to the United States-460,935 from northern and Western Europe, 465,356 from eastern and southern Europe, 89,534 from the Americas, 23,533 from Asia, and 1,072 from Africa. Make a bar graph to show this data. What would be an easy ...
*September 7, 2009*

**math**

how?
*September 3, 2009*

**math**

can someone please explain this problem? (-> is an arrow) assume that limit x-> 4 f(x)=0 and limit x-> 4 g(x)=3 1. limit x-> 4 (g(x)+3
*September 3, 2009*

**math**

how do i find the limit of this? (This symbol:-> is an arrow) lim of x-> 0 sin^2x/x can someone please explain?
*September 2, 2009*

**science**

How can island biogeography be compared to the design of nature reserves? I understandall the things you can do to the nature reserve in terms of bettering it but how is an island similar to a wildlife refugee or reserve (why can you compare them)? can someone please explain?
*September 2, 2009*

**psychology**

do you agree that humans are creatures as well as creators of their personal and social world
*September 2, 2009*

**Algebra**

If f(x)=x^2-2 and g(x)=1/(3x) (x does not equal 0), find g(f(-1)
*July 27, 2009*

**english**

is this a metaphor? Our shadow painted the sand
*June 14, 2009*

**Chemistry**

Which would react faster with MeI in aqueous solution: OH- or Et3N? I know that the reaction in aqueous solution would be an Sn1 reaction and so steric hindrance wouldn't have such a great effect. I am not sure which is a better nucleophile out of OH- and Et3N. OH- is ...
*May 26, 2009*

**Math**

A set of homogeneous simultaneous equations is given by x + ky = 0 kx + 3y = 0 Calculate the two values of k that lead to non-trivial solutions to these equations and express y in terms of x for the two values. I thought that for the solutions to be no trivial the determinant ...
*May 17, 2009*

**Chemistry**

I am attempting to answer a question which asks to explain the sequence of pKaH values for a series of substituted guanidines (NH2)2CNR where R varies. The order is R = H , Ph , CH3CO , MeO , CN , NO2 pKaH = 14.5 , 10.8 , 8.3 , 7.5 , -0.4 , -0.9 I'm not quite sure how to ...
*May 4, 2009*

**Maths**

How can it be possible for a set of inhomogeneous simultaneous equations to have no unique solution?
*April 28, 2009*

**Chemistry**

Why do amides require much harsher conditions for hydrolysis than esters? I'm guessing amides are more stable for some reason, but I'm not completely sure. Is it conjugation?
*April 23, 2009*

**Chemistry**

Why does CdCO3 have a significantly lower decomposition temperature than CaCO3, despite the similarity in the ionic radii of Ca2+ and Cd2+? I think they both decompose to give the metal oxide and carbon dioxide. Could the polarising ability of Ca compared with Cd have ...
*April 23, 2009*

**math**

c 16
*April 22, 2009*

**math**

louis drew all of the possible diagonals from one vertex of a regular hexagon. Which of these statements is true? A) Each diagonal from this vertex is one of two different lengths B) None of the diagonals forms a line of symmetry of the hexagon. C) The diagonals form four ...
*April 22, 2009*

**History- Opinion**

Yes! Totally. It's sounds very good. Who said that? I've it before.
*April 22, 2009*

**math**

Are diagonals longer shorter or the same size as a regular pentagon's sides?
*April 21, 2009*

**circuits**

a parallel RLC bandpass circuit with C=10nF and Q=10 has a center frequency of 500 krad/s. Find R,L and the two cutoff frequencies. Can you design this circuit using a cascade connection of two first-order filters seperated by a follower?
*April 20, 2009*

**circuits**

For the transfer function Tv(s)=[10(s+5)(s+20)]/[(s+1)(s+100)] is this a low-pass, high-pass, bandpass or bandstop function? estimate the corner frequency(ies) estimate the passband gain what is the output if v1(t)=10cos(1000t+45deg) V??
*April 20, 2009*

**Chemistry**

Which is the stronger base, NH3 or H2N-CH2COOH?
*April 18, 2009*

**Chemistry**

Why is the carbonyl group in tert-butoxycarbonyl group (tBOC) less susceptible to attack from nucleophiles than the carbonyl group in esters such as ethyl acetate? Is this something to do with conjugation?
*April 13, 2009*

**maths**

what is th area of 10,10,18,4,4,8,8,2 ?
*April 8, 2009*

**Chemistry**

Is this the correct equation for the formation of [Co(NH3)5(ONO)]^2+ from [Co(NH3)5Cl]^2+ ... [Co(NH3)5Cl]^2+ + NO2 --> [Co(NH3)5(ONO)]^2+ + Cl- I'm a bit unsure because the charges don't balance
*April 8, 2009*

**science**

if two bumper cars collide and they both stop, how do you know a force has acted on them?
*April 4, 2009*

**Literature:)**

37.4% of marriages end up in divorce. these are mostly young people, about 20's.
*April 4, 2009*

**Nutrition of the young child**

B, i think
*April 4, 2009*

**Economics**

705 3987.5
*April 3, 2009*

**Literature (If considered that)**

Ms. Sue is right. 37.4% of marriages end up in divorce.
*April 2, 2009*

**literacy**

The first word and all the other words after it besides the, on, and, and other commonly used words. For example: "The City Charlotte is on the Map!"
*March 31, 2009*

**social studies**

In the year 1900 how many colleges were there?
*March 31, 2009*

**math**

a box holds 23 puzzles. How many boxes are needed to hold 238 puzzles?
*March 31, 2009*

**math**

You are having a pool party and invite 2 of your best friends. These two friends each invite two other people. Each of these 2 people invite 2 people that haven't been invited. How many people will be invited if this process continues for four rounds?
*March 31, 2009*

**math**

20.5092
*March 31, 2009*

**math**

A jacket Jason wants to buy is priced at $18.99. The sales tax is 8%. What is the total cost of the jacket, including tax?
*March 31, 2009*

**circuits**

the zero input response of a series RLC circuit with R=80 ohms is V(c)=2e^(-2000t)cos(1000t)-4e^(-2000t)sin(1000t) V for t>0 if the initial conditions remain the same, what is the zero-input response when R=40 ohms
*March 23, 2009*

**circuits**

in a parallel RLC circuit you have L=100mH and i= inductor current i=50e^(-4000t)-10e^(-5000t) mA how do you find R and C??
*March 23, 2009*

**math**

how do you find the coordinates of the point (x, y, z) on the plane z = 1 x + 1 y + 2 which is closest to the origin
*March 16, 2009*

**math**

Find the maximum and minimum values of f(x,y)=xy on the ellipse 8x^2+y^2=4?????
*March 16, 2009*

**math**

Find three positive real numbers whose sum is 52 and whose product is a maximum?????
*March 16, 2009*

**6th grade Science**

What relationship exists between high tides and phases of the moon?
*March 16, 2009*

**Chemistry**

Write balanced equations for the formation of [Ni(NH3)6][BF4]2 starting from an anhydrous sample of nickel(II) choride hexahydrate. (3 equations necessary) I am slightly confused by this. I think the starting sample has the formula [Ni(H20)6]Cl2 Would this react with ammonia...
*March 11, 2009*

**Chemistry**

I think that nickel(II) nitrate has the formula Ni(NO3)2. As we are starting from anhyrdrous nickel nitrate I thought the first step might be to hydrate it Ni(NO3)2 + 6H2O --> [Ni(H2O)6](NO3)2 and then I thought a reaction with potassium thiocyanate KSCN but I am not sure ...
*March 11, 2009*

**Chemistry**

Write balanced equations for the formation of K4[Ni(NCS)6] starting from an anhydrous sample of nickel(II) nitrate. (3 equations necessary)
*March 11, 2009*

**Chemistry**

What is a balanced equation for the formation of [Co(NH3)5Cl]2+ from [Co(NH3)5(OH2)]3+ ?
*March 4, 2009*

**Math**

Which 3 x 3 matrix represents a reflection in the yz plane followed by inversion through the origin?
*February 24, 2009*

**trig!!**

Sin(X-y)sin(x+y)=sin^2 x - sin^2 y work on one side only...so i worked on the right =(sinx-siny)(sinx+siny) does that equal sin(x-y)sin(x+y)??? help!
*February 21, 2009*

**Trig**

Sin(X-y)sin(x+y)=sin^2 x - sin^2 y work on one side only...so i worked on the right =(sinx-siny)(sinx+siny) does that equal sin(x-y)sin(x+y)??? help!
*February 21, 2009*

**Chemistry**

What would be the molality of a solution made up of 75cm^3 of water and 0.21 g of NaCl?
*February 19, 2009*

**math**

body of mass 7 kg moves in a (counterclockwise) circular path of radius 4 meters, making one revolution every 13 seconds. You may assume the circle is in the xy-plane, and so you may ignore the third component. how do you find the centripetal force acting on the body how do ...
*February 18, 2009*

**math**

A gun has a muzzle speed of 90 meters per second. What angle of elevation should be used to hit an object 180 meters away? Neglect air resistance and use 9.8m/s^2 as the acceleration of gravity.
*February 18, 2009*

**math**

how do you find the curvature k(t) of the curve r(t)=(-2sint)i+(-2sint)j+(-4cost)k?
*February 18, 2009*

**writing**

What should I write my narrative poem about that will make my class laugh? There has to be 4 stanzas and each have to have 3 lines.
*February 16, 2009*

**Chemistry**

What is the pH of a solution made up of 50cm^3 of 1M Ethanoic Acid and 25cm^3 of 1M sodium ethanoate? Assume Ka for Ethanoic acid is 1.8 x 10^-5 mol dm^-3 I'm not quite sure how to do this. I was going to use the equation pH = pKa + log[A-]/[HA] but it doesn't seem to ...
*February 16, 2009*

**math**

Tank 1 initial contains 70 L (liters) of water and 450 g of salt, while tank 2 initially contains 20 L of water and 200 g of salt. Water containing 10 g/L of salt is poured into tank1 at a rate of 1 L/min while the mixture flowing into tank 2 contains a salt concentration of ...
*February 6, 2009*

**Spanish**

What does Pablo Neruda refer to in the last verse of his poem "La Anaconda Copper Mining Company"? "Y hay una y otra cruz torcida en las laderas infernales como única leña dispersa del árbol de la minería."
*February 6, 2009*

**8th grade**

What is domain?
*February 6, 2009*

**8th Grade Math (Algebra1)**

What is domain?
*February 3, 2009*

**Maths**

A particle rotates in a circular orbit about a point located 30cm away, with angular speed 2 rad s^-1. If the angular momentum is 0.2 Js, determine the mass of the particle. I used L=mr^2 omega and got 1.11kg A constant torque of 0.2Nm accelerates the particle for 5s. ...
*February 2, 2009*

**math**

how do you find the differential equation for t(dy/dt)+9y=8t and y(1)=6?
*January 29, 2009*

**math**

how do you find the function to satisfy y'-2y=2e^(3t) and where y(0)=-5?
*January 29, 2009*

**math**

how do you find the solution to (dy/dx)+ycos(x)=6cos(x) when the initial conditions y(0)=8? all i can get is y(x)=e^sin(x) + 7
*January 29, 2009*

**social studies**

What from nature might have given the Egyptians the belief that they would have life after death?
*January 22, 2009*

**Chemistry**

The cell Pt|H2(1 bar)|HCl(m)|AgCl(s)|Ag has an Stadard elctrode potential value of 0.2224V at 298K Using the Nernst equation, calculate a value for the EMF when the HCl concentration is 0.20M. I know what the Nernst equation is but I am unsure how to use it when I only have ...
*January 14, 2009*

**math**

How do you find the area of irregular figures using 3.14 for pi?
*January 13, 2009*

**math**

How do you find the area for an irregular figure using 3.14 for pi?
*January 13, 2009*

**english**

Say one of the funniest moments you had in school and tell them why that was so memorable and funny
*January 13, 2009*

**AP World History**

Well we are doing a project on empire building and we had to answer a couple of questions. I looked all over the internet and I can't find answers to these four questions. this is due tomorrow so I'm really desperate. Can someone help me out? My empire is the Spanish ...
*January 11, 2009*

**Chemistry**

One mole of nirtogen at 273K occupying 10 litres (state 1) is to be expanded to a volume of 20 litres at 373K (state 2). An infinite number of paths from state 1 to state 2 are possible. Consider the following important paths: (a) The gas is expanded isothermally and ...
*January 8, 2009*

**6th grade**

I'm supposed to write a paper on the "real" reason behind not running in the house. It's just why you think you shouldn't run in the house, just something funny nothing real. What should I say is the reason, that will make my class laugh?
*January 7, 2009*

**Chemistry**

A conductivity cell was calibrated using KCl solution (0.01 mol dm^-3) with a conductivity of 0.141 S m^-1 and the resistance was found to be 520 Ohms. The resistance of a saturated solution of silver chloride was found to be 3.8 x 10^5 Ohms. Calculate the solubility product ...
*January 4, 2009*

**Chemistry**

Which phosphates are found in human urine? I am writing about the discovery of phosphorus. I know that after urine was left to stand for several days and boiled to a paste it contained ammonium sodium hydrogen phosphate. Is this a constituent of fresh urine or did a reaction ...
*January 4, 2009*

**English**

Such a person as he/him is.... use "he"or"him"?
*December 20, 2008*

**Chemistry**

What is a definition for i) radial wavefunction ii) angular wavefunction What is the physical meaning of each?
*November 30, 2008*

**Chemistry**

An ammonium halide A contains 9.664% nitrogen. Identify A.
*November 20, 2008*