Tuesday

December 1, 2015
Total # Posts: 1,006

**chem**

Which do you run out of first, the limiting reactant or the excess reactant?
*March 12, 2008*

**Physics**

Why do we rationalize a denominator? The only reason I can think of and can find in a search is to reduce it because it makes it simpler but is not necessary. Help! I have to write a paper on it.
*March 12, 2008*

**Biology**

Can someone explain to me in simple terms deductive and inductive reasoning. Every time I find a new definition, I get more confused. I think that deductive is when you try to figure out from something that is generic and inductive is when you already know what will happen. Am...
*March 11, 2008*

**chem**

How many moles of water are produced when 1.05 g of oxygen gas reacts with 1.22 g of hydrogen gas to produce water?
*March 9, 2008*

**chem**

How many grams of nitric acid(HNO3) will be produced when 0.51 mol of dinitrogen pentoxide reacts with water to form nitric acid?
*March 7, 2008*

**chemistry**

How many moles of iron(II)sulfide are produced when 4.38g of Fe reacts with 2.88g of S to produce iron(II)sulfide?
*March 7, 2008*

**Biology2**

What is the function of oxygen in the main degradative pathway,aerobic respiration?
*March 7, 2008*

**chemistry**

how many sublevels exist in the fourth principle energy level? a) 2 b) 4 c) 16 d) an infinite number
*February 28, 2008*

**chemistry**

the third quantum number, m, indicates what property of the electron? a) orbital b) spin c) charge d) energy level
*February 28, 2008*

**chemistry**

the third quantum number, m, indicates what property of the electron?
*February 28, 2008*

**social studies**

unleart
*February 25, 2008*

**algebraic reasoning**

the relationship b/w the distance d, in feet, required to stop a vehicle and s, the speed in miles per hour that the vehicle was traveling, is given by the equation d=0.0155s(squared)/f f represents the coefficient of friction b/w the tires and the road *it took a car 205 feet...
*February 23, 2008*

**numerical & proportional reasoning**

students in a biology class measured and recorded the lengths of different microscopic organisms. the results are recorded below. organism lenght(millimeters) a 0.00065 b 4.72* 10(exponent -4) c 8/10,000 d ?? a- a fourth organism was measured and found to be 1/40 the length of...
*February 23, 2008*

**Science**

I need an example of a disaccharide. Would an examle be lactose?
*February 23, 2008*

**PhYs...alpha particles**

Do you need to use the equation or can you just plot a graph of the distances you move the alpha particle source against the air pressure?
*February 17, 2008*

**Chemistry**

I am not sure if I answered the question below correctly and if I need all the information in my answer. Do I need all of this information? Why does the simplest ketone have 3 carbon atoms and no less? The simplest ketone has three carbon atoms and no less because of the ...
*February 16, 2008*

**history**

who stood behind Ned Kelly when he was going to be hung
*February 12, 2008*

**Chemistry**

My question is why is benzene less reactive than 1,3,5-cyclohexatriene? I cannot find anything on 1,3,5 cyclohexatriene and why it is more reactive. I know that benzene does not undergo addition reactions and is extremely stable to oxidizing reagents. C atoms in benzene are ...
*February 11, 2008*

**Chemistry**

My question is why is benzene less reactive than 1,3,5-cyclohexatriene? I know that benzene does not undergo addition reactions and is extremely stable to oxidizing reagents. C atoms in benzene are connected by delocalized double bonds which make them available to all carbon ...
*February 10, 2008*

**Chemistry**

My question is why is benzene less reactive than 1,3,5-cyclohexatriene? I know that benzene does not undergo addition reactions and is extremely stable to oxidizing reagents. C atoms in benzene are connected by delocalized double bonds which make them available to all carbon ...
*February 10, 2008*

**Chemistry**

Formula of 1,3-butadiene The answer I came up with is CH2=CH-CH=CH2 Am I close?
*February 9, 2008*

**Chemistry**

NCl3 is not covalent by the way... i just put it in as my answer and got it wrong.
*February 4, 2008*

**spanish sra Mcgin**

I need this checked, I wrote the question then the answer in spanish and then translated it into what I said but i'm not sure if it's right: 1.Que es el suceso? El suceso es una fiesta. What is the event? The event is a party. 2.Que tipo fiesta? Una fiesta de ...
*January 29, 2008*

**FIRST GRADE GRAMMER**

I AM HELPING MY DAUGHTER WITH HER HOMEWORK AND THE TEACHER MARKED HER ANSWERS WRONG. I WANT TO SEE IF SHE IS CORRECT. WHAT WOULD THE 2 ADJECTIVES BE IN (BROOKE, BRUCE AND ELSIE ALL RIDE THE SAME BUS.)
*January 15, 2008*

**1ST GRADE GRAMMER**

WHAT IS THE PREDICATE IN THE SENTENCE I GAVE AN APPLE TO THE HORSE.
*January 15, 2008*

**math**

okay so i have this word problem. The measurements of the upper portion of the hutch, in inches, were: 9 3/4, 12 9/16, 10 3/8, and 16 7/16. The total hight of the hutch is 82 3/8inches. a)what is the height of the upper portion? b)what is the height of the lower portion?
*January 8, 2008*

**Am I correct on this question (accounting)**

The question is: which accounts normally require an adjusting entry: Choices to choose from were: Salaries payable, Land, Dana Cates Drawing, Accumulated Depreciation, Unearned Rent and Supplies. The ones that i chose for the question were: Salaries Payable, Accumulated ...
*December 2, 2007*

**Social Studies (World History)**

The trans-saharan routes and the gold-salt routes either don't fit in the time frame or the region.
*November 12, 2007*

**Social Studies (World History)**

I need to find information particularly on agricultural and pastoral production in central Africa during the time span: 600-1450. If info on this subtheme does not offer a lot of info, we may use the bigger theme which is creation, expansion, and interaction of economic systems.
*November 12, 2007*

**history**

what does Shahadah mean?
*November 6, 2007*

**History**

what does Abbasids mean?
*November 6, 2007*

**History**

Do you know a short meaning to the word: Umayyads?
*November 6, 2007*

**history**

what is the meaning of Medina?
*November 6, 2007*

**History**

What does Hejira mean?
*November 6, 2007*

**physics**

A 1.82 kg box moves back and forth on a horizontal frictionless surface between two different springs, as shown. The box is initially pressed against the stronger spring (k1 = 37.0 N/cm), compressing it 3.10 cm, and then is released from rest. By how much will the box compress...
*October 27, 2007*

**Biology**

So the question is: What is the evolutionary significance of the 'Euglena' that forms a perspectie of utiliazing pigments to capture light energy? I researched for hours but couldn't find information on evolution of Euglena. please help ASAP! Thank you!
*October 21, 2007*

**science**

how do you draw C2H6 as chemical structure?
*October 20, 2007*

**civics**

What are some personal qualities an adviser to the president should have?
*October 11, 2007*

**science**

i need help on my science fair project. i'm doing it on fabric. can you help me?
*October 9, 2007*

**...Physics...**

606.9
*October 7, 2007*

**math...help please!**

Find the 35th term of the sequence in which a1 = 7 and the common difference is 7.
*October 2, 2007*

**math**

how do you make 16 2/3% into fraction?
*September 20, 2007*

**math**

how do you make 16 2/3 into fraction?
*September 20, 2007*

**science**

What is matter? And four examples of objects/substances that would be classified as ''matter'' Please help me with this question and anyhting else you know about ''matter''
*September 17, 2007*

**Biochemistry**

Which two ionization states of lysine are present at pH 7 in what and ratio? Show calculation
*September 9, 2007*

**Precalculus**

If f(x-2)= square root of x^2 - 16 and g(x)= 3^x/(2-x), then find [f(3)+g(5)]/2. I honestly don`t even know where to start! please help :[
*August 28, 2007*

**miles to meters**

how do you convert 2250 miles to meters?
*August 26, 2007*

**MATH!!!!!!**

Roger purchases two doughnuts and three cookies at a doughnut shop and is charged $3.30. Sam purchases five doughnuts and two cookies at the same shop for $4.95. All the doughnuts have the same price and all the cookies have the same price. Find the cost of one doughnut and ...
*May 28, 2007*

**physical science**

what is required for work a force moving something, and movement of that something in the direction of work.
*May 27, 2007*

**science geology**

explain how a crosscutting feature is always younger than the rock layers it cuts across? Wouldn't it require the underlaying rock to be formed well before it was crosscut?
*May 13, 2007*

**MATH!!!**

To measure the length of a hiking trail, a worker uses a device with a 2-foot diameter wheel that counts the number of revolutions of wheel makes. If the device reads 1,100.5 revolutions at the end of the trail, how many miles long is the trail, to the nearest tenth of a mile...
*May 13, 2007*

**MATH!!**

A fish tank with a rectangular base has a volume of 3,360 cubic inches. The length and width of the tank are 14 inches and 12 inches, respectivily. Find the height, in inches, of the tank? V=LxWxH 3360=14x12xH 3360=168xH H=3360/168 H=2O 14x12=168 3360/168=20 which would be the...
*May 13, 2007*

**MATH!**

graph the following system of inequalities on the accompanying set of axes and label the solution S. y>x-4 i got this one. but how would you graph y+x> or = to 2. How do you find the slope and y intercept? Change it to read (subtract x from both sides y>-x +0 slope......
*May 13, 2007*

**MATH!!**

The area of Mrs.Raders rectangular garden is 100 square feet. One side is a stone wall. She encloses the other 3 sides with 30 feet of fencing. What are the dimensions of her garden? I have the length of the triangle to be 30-2x and the width to be x. But soo how would you put...
*May 7, 2007*

**MATH!**

The length of a triangle is twice the width. The area is 32 square units. Find the length and width. I have the length of the triangle=2x and the width=x... so would the equation be 2x(x)=32 OR NO? Assume the "length" is the height measured from some side we will ...
*May 7, 2007*

**MATH!**

To get from his high school to his home, Jamal travels 5.0 miles east and then 4.0 miles north. When Shelia goes to her home from the same high school she travels 8.0 miles east and 2.0 miles south. What is the measure of the shortest distance, to the nearest tenth of a mile, ...
*May 6, 2007*

**MATH.**

Radio station KMA is increasing its radio listening radius from 40 miles to 50 miles. How many additional square miles of listening area, to the nearest tenth, will the radio station gain? I thought it was 10 miles.But it says round.So im a little confused.If you could Help.I ...
*May 6, 2007*

**Math.**

Ashanti and Maria went to the store to buy snacks for their back to school party. They bought bags of chips, ptetzels, and nachos. They bought three times as many bags of pretzels as bags of chips, and two fewer bags of nachos than bags of pretzels. If x reprsents the number ...
*April 16, 2007*

**analogies!!**

i have tried to figure out the answer a lot of times but i can't figure it out. indelible:erasure::infallible: mistake, schedule, reason, emotion, or pleasure You have to make the exact connection between the first two; then make the same connection between the second two...
*April 4, 2007*

**analogies**

I need help with this analogy. person:unimportant::idea: sporadic, reticent, trivial, quiescent, or raucous I have no idea what the answer is!! Help me!! trivial. Now why, that is important. Hint: what do unimportant and trivial have to do with each other that the other ...
*April 3, 2007*

**Calculus**

alright. i need to write a definite integral for the volume and evaluate the integral for the region bounded by y=x^2, y=0, and x=1 revolved about the a) x-axis, b) the y-axis, c) x=2, and d) y=-2. HELP! Lets do the x=2 axis. dV= pi rh dr where r is radius, h is height. r= x-1...
*April 1, 2007*

**MATH!**

Finding Common Demoninators in fractions. 1) 2 4 -- - --- x^2-16 x^2+x-12 2) x-3 x+3 ---- + ------ x^2+2x-8 x^2+7x+12 Can ANYONE help me with these. I cant figure out how to get the DEMONINATORS THE SAME!? Use brackets to write these kind of fractions, the text editor of this ...
*April 1, 2007*

**Physical Science**

Nuclear Fusion
*March 29, 2007*

**Chemistry**

I have this awful problem due tomorrow; if anyone can help it would be much appreciated. Most introductory chemistry texts provide a formula for the freezing point depression/boiling point of elevations: delta-T(f,b)= K(f,b) * m (m = molality) In fact, these are derived ...
*March 27, 2007*

**MATH!**

5x^2-7xy+12y^2 _______________(OVER) x^2+xy-20y^2 Please if anyone can help in the steps to answer this...i would be greatful.=) What is a reflex angle Are you sure you copied the question correctly? If the top is 5x^2-17xy-12y^2 it works out really easily. The way it stands, ...
*March 26, 2007*

**MATH!**

The ratio of two supplementary angles is 2:7. What is the measure of the smaller angle? Can anyone help me with this--i dont understand it. The angles add to 180, so 2x + 7x=180 solve for x, then the smaller angle is 2x Supplemental means adds to 180 degrees. THANK YOU SOO ...
*March 25, 2007*

**MATH!!!**

(1)TOP Electronics is a small business with five employees.The mean(avergae) weekly salary for the five emplyees is $360. If the weekly salaries of four of the employees are $340,$340,$345, and $425, what is the salary if the fifth employee? ___________________________________...
*March 11, 2007*

**MATH!!**

(1)At the begining of her math class, Mrs. Reno gives a warm-up problem. She says, "I am thinking of a number such that 6 is less than the product of 7 and this number is 85." Which number is she thinking of? A-11 B-84 C-13 D-637 ___________________________________ (...
*March 11, 2007*

**science**

what happens to the power of an electric circuit if the resistance is decreased?? explain?? i know that as the power increases the resistance decreases why is that?? Power = voltage^2 / resistance. Think again about what you "know". Resistance does not decrease with ...
*March 7, 2007*

**science**

why do lightbulbs burn out?? i know it has somethign to do with the filament but thats it thanks? The filament simply burn in two and there is no longer a physical connection "inside" the bulb.
*March 7, 2007*

**Science**

How can the voltage change in relation to current if the resistance is constant. This is suppose to be using Ohm's law. see above.
*March 7, 2007*

**science**

Why does the filament glow more brightly as the electric current in a lightbulb is increased? The glow is dependent on two things: Spectral output, and intensity. Current makes the temperature hotter, and so the spectrum is shifted from red to violet, which is more energetic. ...
*March 7, 2007*

**science**

why is there zero current when a light bulb burns out? With the filamnt burned out there is no connection and no connection means no power is going through the wires; thus, no current.
*March 7, 2007*

**Math!**

Factoring Completely! 13b^2-13 I got (13b-13)(1b-1). On my test my teacher said it was party wrong.And she underlined the two Thirteen's i had in my answer. And i dont understand why!? _______________________________________ Also on another one.The problem is.. 2d^2+3d-2 I...
*March 1, 2007*

**Math!**

In the equation A=p+prt, t is equilvalent to... (1)A-pr (3)A - p _________ ___ p pr (2)A-p (4)A - pr ________ ___ pr p t is time. Your answers are difficult to interpret. Solving for t, t = (A-p)/pr
*February 27, 2007*

**MATH!!!PLEASE HELP!!**

A wall is supported by a brace 10 feet long. If one end of the brace is placed 6 feet from the base of the wall, how many feet up the wall does the brace reach? Think of the right triangle frmed by the wall, the floor and the brace, and use the Pythagorean theorem. The brace ...
*February 27, 2007*

**eth 125**

opposing viewpoints on bilingualism in politics and education 2010- in the google search helped me find a site thatsupplied numerous links for my research.
*February 15, 2007*

**Math**

How do I set this problem up and solve it. Mrs. Muniz's algebra class was collecting money for a party. The class decided that each student should give the same amount of money. They collected a total of $9.61. If everyone used 5 coins, how many nickels were collected 961 ...
*February 15, 2007*

**Science/Math**

A radio wave has a frequency of5,000,000 Hz. Write this number in scientific notation. ????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? This is not the right answer so hurry up as soon as possible ...
*February 12, 2007*

**music**

who invented music. There is no one who is known for inventing music. I imagine the cave men beat sticks on a rock and enjoyed the sound... They probably also blew on a reed and found it made noise. Mama cave women probably crooned to babies and found it put them to sleep. I ...
*January 29, 2007*

**math**

how do i solve two step equations? Do you mean two equations in two unknowns? The method of substitution is one way. There is a good tutorial here: http://www.themathpage.com/alg/simultaneous-equations.htm
*January 18, 2007*

**spelling**

for nail:hammer:: screw: screwdriver
*January 16, 2007*

**Chemistry**

Are the Carbon atoms full though. I dont know. My teacher was saying something about putting the atoms with dots on a diagonal and she said something about using arrows to indicate the "CC" bonds. ??????????????????????????????????????? I dont understand what you ...
*January 8, 2007*

**Chemistry**

That worked out perfectly! I understand where you're going now! THANK YOU SO MUCH!!! Use the electron-dot symbols to show how the bonding (covalent or ionic) takes place. Use as many of each atom as needed for: 1. Carbon and Hydrogen 2.Silicon and Fluorine try combinig the...
*January 8, 2007*

**Algebra**

For what value(s) of b will x^2 + bx + 3 have exactly one root? I'm rather new at this but wouldn't b=2*sqrt(3) give (x+sqrt3)2 as factors and that would give one root? Check my thinking. for a quadratic equation to have exactly one root, the discriminat must be zero i...
*December 20, 2006*

**possessive nouns**

The banana belongs to the the chimp
*December 12, 2006*

**the big idea of energy**

i hate everyone on his website becauce u r all dumb someone HELP ME
*December 5, 2006*

**the big idea of energy**

thank u i had no idea what it meant by the big idea of energy. i am from england. thank you who explained it so well fab.
*December 5, 2006*

**chemistry**

Why do beryllium and fluorine combine in a 1:2 ratio? use page 194 in your textbook. Be is in group 2 (IIA) and has two electrons in its outer shell which it wants to give away. Flourine is in group 17 (VIIA) and has seven electrons. It needs one more to fill its outside shell...
*December 3, 2006*

**fractions**

do you have fractions on this website? Yes
*November 15, 2006*

**acids and alkalis**

anyways thanks guys for the website (L)
*November 4, 2006*

**acids and alkalis**

you should know this by now
*November 4, 2006*

**acids and alkalis**

soap, oven cleaner, toothpast and loads more :) x
*November 4, 2006*

**English!_+ check please!**

exactly!
*November 3, 2006*

**Physics**

A rifle is aimed horizontally at a target 46.0 away. The bullet hits the target 1.60 below the aim point. What was the bullet's flight time? What was the speed of the bullet as it left the barrel?
*November 2, 2006*

**inca arts and crafts**

norage
*September 28, 2006*

**Global...????**

Okay i have to for class monday present a speech thingy about Queen Elizabeth I... Like your in groups and one of us has to dress up like that person(queen) and the other two interview them! Soo like u need questions and answers...but heres the thing i can only come up with 4 ...
*September 16, 2006*

**algebra**

Solve for x. (l is the absoulte bar, not one) 3*l 3x-2 l -6 > l 3x-2 l We're given; 3*|3x-2|-6 >|3x-2| Add -|3x-2| to both sides to get 2*|3x-2|-6 >0 Add 6 to both sides to get 2*|3x-2|>6 Divide both sides by 2 |3x-2|>3 This means 3x-2>3 or 3x-2<-3 3x-...
*September 5, 2006*

**advanced algebra**

One number is 3 more that half of a second number. If the average of the two numbers is 31/2, find the smaller of the two numbers. PLEASE HELP. thanks! N-3=1/2 S N+S= 2*(31 1/2) help me
*August 31, 2006*

**Language Arts**

My teacher said to create an acrostic poem with the name EAST MILLBROOK and we have to fill it in with or goals for the year the only problem is she wants us to use words like exemplify instead or show. Please help me!!! This is what it should look like Exemplify A Show T M ...
*August 29, 2006*