Friday

May 29, 2015

May 29, 2015

Total # Posts: 484

**math**

6000
*March 24, 2009*

**Chemistry**

Never mind! :) I think I see what I need to do. I simply subtract the initial mass from the mass of the compound to get the mass of the Chlorine and go from there. Correct?
*March 23, 2009*

**Chemistry**

If I don't know the empirical formula, what am I supposed to use for the relative atomic mass here for xenon fluoride to get moles?
*March 23, 2009*

**Chemistry**

Oh, and the answer is A. I just don't understand how you get it.
*March 23, 2009*

**Chemistry**

Xenon of mass 5.08 g reacts with fluorine to form 9.49 g of a xenon fluoride. What is the empirical formula of this compound? A) XeF6 B) XeF4 C) XeF2 D) XeF E) Xe2F I am not familiar with these types of empirical formula problems. If I'm given the percentages of the ...
*March 23, 2009*

**college math**

convert 36in.=_ft
*March 8, 2009*

**Religion**

Is it called purgatory when you're in between life and heaven/hell? Thanks.
*March 8, 2009*

**math**

what is a domain? what is a range?
*February 23, 2009*

**college**

the relationship between the dosage, x, of a drug and the resulting change in body temperature is given by f(x)=x squared(4-x) for 0 greater than or equal to x greater than or equal to 4. make sign diagrams for the first and second derivate and sketch the dose-response curve ...
*February 12, 2009*

**algebra**

I'm not sure if this is exactly the answer you're looking for, but I know multiplying something by 1/2 is the same as dividing it by 2. I hope I helped!
*February 12, 2009*

**Thank you!**

Thanks!
*February 12, 2009*

**Algebra**

Suppose that x = 2-t and y = 4t+7. a. If x=7, what is y? b. If x=-3, what is y? c. Find y in terms of x. I don't know how to solve this, since x and y are in different equations. Could you please walk me through it? Thanks!
*February 12, 2009*

**science**

what color can be formed by combining complementary colors?
*January 7, 2009*

**Math**

THE GRINCH IS GONNA STEAL CHRISTMAS!!
*December 11, 2008*

**Math**

i don't think im qualified to help yu with this question.
*December 11, 2008*

**math**

do you know the muffinn man
*December 11, 2008*

**math**

i have a serious question for you
*December 11, 2008*

**math**

alright yea that was pretty hawtt;)
*December 11, 2008*

**math**

oo sorry
*December 11, 2008*

**math**

lmao ok calm down im pretty sure its 10 i could be wrong though
*December 11, 2008*

**math**

wow. ur really good! =) thank you!
*December 11, 2008*

**math**

find the area of this ring to the nearest square unit. Show your work. The image shows a ring, the inside raius is 2.0m, and the outside radius is 3.2m. The area of the ring is... plz help!! thx.
*December 11, 2008*

**Math**

thats hawwt. ur welcome.
*December 11, 2008*

**History-Constitution**

okk, thank you!
*October 27, 2008*

**History-Constitution**

Yes, but how is a strong central government good- couldnt it be dangerous in a way? In other words, what part of the Consitution was better than the Articles of confederation?
*October 27, 2008*

**History-Constitution**

I read the constitution many times, it is hard to understand- how did the constitution address the flaws of the Articles of Convederation? thanks!
*October 27, 2008*

**Chemistry**

What are the names of all the classes of substances that conduct electricity?
*October 21, 2008*

**math**

thanks a lot, so is the answer those numbers added up?
*October 18, 2008*

**math**

in a high school there are 27 hockey players and 15 soccer players. if 8 persons played both sports, how many different people played in these sports.
*October 18, 2008*

**college chemistry**

what is the correct answer for this?
*October 14, 2008*

**AP World History**

my thesis is:In spite of both the Roman and Han government involvement in technology, during the classical period the Romans had a more neutral/negative attitude whereas Han China had a positive view towards crafts people. is that ok?
*October 14, 2008*

**Math**

no, but i mean how do you factor the probability of 4 instead of just 1?
*October 14, 2008*

**Math**

i mean, I know how to do 1 like the probability of getting paired with someone but how does the 4 come in?
*October 14, 2008*

**Math**

Probability -if desks are grouped by 4 and if there are 11 boys and 13 girls in a class what is the probability that I will get placed in a group of all girls?
*October 14, 2008*

**9th grade**

yes, that's right
*October 13, 2008*

**6th grade com arts**

i just don't understand what it means to write the answer words, sorted by suffix
*October 7, 2008*

**6th grade com arts**

we had to do anzlogies i.e. ball : bouncy : glue : sticky The next part is "sort the answer words by suffix" What does that mean?
*October 7, 2008*

**Com Arts**

I think it is cities
*October 7, 2008*

**Com Arts**

I have the same question as Jake... trees : leaves : states : ? The answer has 6 letters, the thirs letter being a "t". Does anyone know?
*October 7, 2008*

**spanish**

are there any web sites that offer online quizzes with immediate answers?
*October 2, 2008*

**Math**

would the answer be 24:36?
*September 28, 2008*

**Math**

Last week, Marcia played goalkeeper for her hockey team. She stopped 20 out of 30 shots on goalm . This week, marcia faced 36 shots. She stopped shots on goal in the same ratio as the previous week. How many shots did marcia stop?
*September 28, 2008*

**social studies**

are you sure?
*September 22, 2008*

**social studies**

why would it be important for a pharoh to unite upper egypt and lower egypt
*September 22, 2008*

**6th grade math**

2x16-12+5=15
*September 16, 2008*

**writing**

When writing a essay. How many spaces after a . after , "Is this correct".
*September 15, 2008*

**literature**

In your opinion, what are today's epics?
*September 15, 2008*

**english**

edit for correct pronoun. we expected the concert to last for at least two hours. since the average ticket sells for twenty dollars, this was not being unrealistic.
*September 9, 2008*

**math**

it would be 36. Area= base x height. In a square, base and height are the same. 6x6 = 36.
*September 9, 2008*

**Physics**

What is the energy of this type of radiation: 6.32 x 10^20 s^-1 ?
*September 9, 2008*

**Physics**

What is the speed of an electromagnetic wave that has a frequency of 7.8 x 10^6 Hz? How would I solve this problem?
*September 9, 2008*

**Physics**

Ok so I think I have this correct, but I'm not sure. The question is: what is the frequency of green light, which has a wavelength of 4.90 x 10 ^-7 m? Since all electromagnetic waves travel at 3.00 x 10^8 m/s (c), and c= wavelength x frequency, The problem is: (3.00 x 10^8...
*September 9, 2008*

**science**

what happens to microbes when they are packed in food tins?
*April 26, 2008*

**math**

Does anyone know what |-11| means?
*February 28, 2008*

**Chemistry**

Please help me break this problem down.. Thanks lot. Light with a wavelength of 425 nm fell on a potassium surface, and electrons were ejected at a speed of 4.88 X 10^5 m/s. What energy was expended in removing an electron from the metal? Express the answer in joules (per ...
*January 13, 2008*

**math**

1.What is the probability Megan will develop the symptoms of Huntington’s disease? (Assume her mother was hh.) Show the sample space.--50% 2.What is the probability that their first child will develop Huntington’s disease?--25% chance having disease, 75% chance ...
*November 26, 2007*

**math**

Consider yourself a genetic counselor. Megan and Eric come to you for your services. They are planning on having their first child. Megan’s father died from Huntington’s disease. Eric’s family has no history of Huntington’s disease. They would like to have ...
*November 26, 2007*

**Homework**

Mike, Bobby, Olivia, Lila, Alex, Veronica, Amanda.... Sorry for the confusion.
*November 12, 2007*

**Homework**

We, my roomates and I, keep getting replies saying stop posting under more than one name. We are not posting under more than one name we are all different. We all live together and only have this common computer at the moment, but we are more than one person and we love this ...
*November 12, 2007*

**biology**

You are cheating!!!! answer that friggin' easy question yo' self!!!!!!!!!!!!!!!
*November 12, 2007*

**physics**

Does anyone know what this is about? please help I would be more than grateful.. How does Rutherford’s model of the atom account for the back – scattering of alpha particles directed at the gold leaf
*November 10, 2007*

**marketing assessment**

design a marketing plan for one of the following types of product
*November 3, 2007*

**globe school for environmental Research**

How are igneous rocks form
*November 1, 2007*

**music**

why is sonata-allegro considered to be dramatic and rewarding?
*October 28, 2007*

**Math**

7a-8 =15a + 8 add 8 to both sides 7a = 15a + 16 subtract 15a from both sides -8a = 16 divide by -8 a= -2
*October 18, 2007*

**Physics**

Could someone help me on how to put this all together. Atomic physicists ignore the effect of gravity within an atom. To see why, calculate and compare the gravitational and electrical forces between an electron and a proton separated by 10-10m. Im confused ok i have that the ...
*October 18, 2007*

**Physics**

what? i know the masses yes not sure about the charge. . . but the fromula i have is f=k g1f2/r^2 so And all these numbers are something to the power of something else how do i work that out?
*October 18, 2007*

**Physics**

Im confused ok i have that the mass of a proton is 1.6726231 x 10^-27 and the mas of an electron is 9.1093897 x 10^-31 charge of an electron is 1.602 x 10^-19 what do i do with all of this, is g1 the charge of the proton g2 the charge of the electron? what is d is that 10 m?
*October 18, 2007*

**Physics**

Someone please help me, I am having the worst time understanding this problem. Where do I begin? Atomic physicists ignore the effect of gravity within an atom. To see why, calculate and compare the gravitational and electrical forces between an electron and a proton separated ...
*October 18, 2007*

**Biology**

What are needed for humans to be able to digest?
*September 20, 2007*

**Chemistry**

Suppose you are studying coordination compounds of Co(II) with the ligand pyridine (py, C5H5N, MW = 79.10). You isolate a crystalline compound and since the only available ions are chloride and nitrate, you hypothesize the empirical formula of the coordinaton compound must be ...
*April 23, 2007*

**looking up a state**

I would like to look at bugs in Iowa and see the type of houses they live in also I would like to see how they live in that type of weather there. http://www.extension.iastate.edu/Publications/IAN606.pdf http://www.etenson.iastate.edu/publications/IAN606.pdf
*March 29, 2007*

**english**

There is a poem called 'Still I Rise' by Maya Angelou.
*March 18, 2007*

**SCIENCE - Pls HELP**

A proton (with a mass, mp = 1.673 x 10^-27 kg & electrical charge, e = 1.602 x 10^-19) and an electron (with a mass, me = 9.109 x 10^-31 kg & electric charge -e = -1.602 x 10^-19) are not moving & at a distance of 1.000 x 10^-10 m apart.... (assuming the electrical constant, ...
*February 7, 2007*

**chemistry**

ACCORDING TO THE OCTET RULE, CALCIUM HAS THE TENDENCY TO DO A. LOSE ONE ELECTRON B. LOSE TWO ELECTRONS C. GAIN ONE ELECTRON D. GAIN TWO ELECTRONS
*January 20, 2007*

**Math**

Using the intersection method, I need to solve the following equation: 5x-3.3=x-2.1 Can you point me on the right path? you have to get x's on one side, and the numbers on the other. then solve for x. Kira, Thank so much for your help, but how do you graph the equation to ...
*December 20, 2006*

**algebra**

(2x+1)-(X-1)= to get rid of the second set of parentheses, you have to mulptiply by -1...so the x becomes -x and the -1 becomes 1. So, its 2x + 1 - x +1 = x + 2
*November 19, 2006*

**Music**

Why is sonata-allegro form considered to be dramamtic and rewarding?
*October 16, 2006*

**algerbra 1**

what is the answer to 5x-16=14-5x Just giving you the answer is not what this forum is about. We'd be defeating the purpose of you assignment by doing that. Try to work the variables to one side, say the lefthand side, and the numbers to the other side. Add 5x to both ...
*September 27, 2006*

**Math [Probability]**

78125 bricks
*September 10, 2006*

**saxon 65**

how many minutes is one third of an hour An hour is 60 minutes. What is one third of 60 minutes? I hope this helps. Thanks for asking. 20
*August 28, 2006*

**Metric System**

I have two queations that have to do with the metric system: 1- What connections can you identify between the metric units for length and volume? 2- Why is it difficult to convert miles to yrads or feet? Thanks in advance for your help! 1- What connections can you identify ...
*August 18, 2005*