Monday

January 16, 2017
Total # Posts: 862

**science**

What is a maerial that was recently alive?

*March 12, 2008*

**math**

Can a polar bear go on a safari?

*February 26, 2008*

**Stoichiometry**

How much iron (II) sulfide would be needed to prepare 15L of hydrogen sulfide? My balanced equation is 2HCl + FeS --> H2S + FeCl2. I have converted 15L H2S to mols, but I have no idea where to go from here.

*February 24, 2008*

**Science**

what evidence would you look for in a chemical change

*February 23, 2008*

**math**

5 plus 5/10

*February 16, 2008*

**Algebra1**

ok thank you for all of your help

*January 29, 2008*

**Algebra1**

564t=744(t-.5) 564t=744t-372 564t-564t=744t-372-564t 0=180t-372 0+372=180t-372+372 372=180t 372/180=180t/180 2.07=t Is that correct?

*January 29, 2008*

**Algebra1**

no the second one left a half an hour later sorry i forgot to include that

*January 29, 2008*

**Algebra1**

A jet leaves the airport traveling at an average rate of 564km/h. Another jet leaves the same airport traveling at a rate of 744km/h in the same direction. How long will it take for the second jet to reach the first jet

*January 29, 2008*

**Math**

what is 3(x-4)-2(8-x

*January 17, 2008*

**Math**

Wha are the roots of x to the second power divided by x minus six equals Zero?

*January 13, 2008*

**science**

I have to come up with a question that i can turn in to a experiment need help please

*January 6, 2008*

**Math**

i have a question with my algebra hw about (7Xto the6*ytothe9)to the4/3xtothe 10*y to the 4

*December 17, 2007*

**geography**

Thank you Ms Sue.

*November 28, 2007*

**geography**

Thank you Ms. Sue. You really helped me.

*November 28, 2007*

**geography**

sammy goes out to play. his mother tells him to be home by 5:00. Sammy is almost an hour late, but he has an excuse. He says that he got lost. He tells his mother that when he checked his compass, it was pointing west,so he followed a path in that direction,but stillhad ...

*November 28, 2007*

**Physics**

Thank you very much.

*November 28, 2007*

**Physics**

A student throws a ball vertically upward such that it travels 9.0 m to its maximum height. If the ball is caught at the initial height 2.4s after being thrown, what is the ball's average speed? I know average speed is change in distance over change in time, but I don'...

*November 28, 2007*

**English**

Am I missing any important punctuation in this sentence: Scientists and doctors alike have only come up with one sound conclusion to date: based on what they’ve seen yet, the Ram is a creature which will no doubt affect the environment it lives in greatly, and it will not...

*November 22, 2007*

**English (Need help rephrasing)**

Thank you very much! It conveys exactly what I was trying to say.

*November 18, 2007*

**English (Need help rephrasing)**

Can you please help me rephrase this? I have completed over 150 volunteer hours at {name} Hospital. Delivering and filing medical transcriptions is one of my favorite jobs. Through this work, I was able to explore every part of the hospital while having the responsibility of ...

*November 18, 2007*

**history**

what is one aspect of brazilian life that reflects a mix of cultures?

*November 15, 2007*

**Physics**

What are some examples of the principles of mechanics in car crashes and car safety? I can only think of one, friction reducing the traction of the tires. Can you help me come up with two or three more examples? Thank you.

*November 13, 2007*

**CHEMISTRY**

What would be the uncertainty in velocity (miles/hr) of a neutron beam particle if the position can be measured within +/- 25 angstroms. The rest mass of a neutron = 1.67493 X 10^-27 kg or 1.008664904(14) amu. I know you have to use the heisenberg uncertainty principle: (...

*November 7, 2007*

**Math**

What web sites to go to to find information about integers

*November 6, 2007*

**Math**

i ment what is a number that divied by 3 has a remainder of 2 also that same number divided by 4 has a remainder 3 and that same number divided by 5 has a remainder of 4

*November 4, 2007*

**Math**

what is a number that divied by 3 has a remainder of 2 also that smae number divided by 4 has a remainder 3 and that same number divided by 5 has a remainder of 4

*November 4, 2007*

**English (very simple)**

What are some phrases similar to "Case in point"? Thank you very much.

*October 20, 2007*

**math**

How do you find the median?

*October 9, 2007*

**mult.**

66,059

*October 8, 2007*

**mult.**

what is: 9,436 x 7 ------

*October 8, 2007*

**science**

you're very welcome!!!!!

*October 8, 2007*

**science**

waves crush shells and stones to create sand

*October 8, 2007*

**Math**

thank you very much Ms.Sue!!!!!!!!

*October 8, 2007*

**Math**

A rectangle has a width if 10 inches and an area of 5 square inches. What is the length of the rectangle?

*October 8, 2007*

**6th Grade Statistics**

The student is correct because the median is used to find the middle numeric value of a data set, the mean balances out the data so all numbers in a data set are the same. This means that the mean and median can only be used for a numeric data, so this student is correct.

*October 2, 2007*

**6th Grade Statistics**

One student says you can only use the mode to describe categorical data, but you can use the mode, median, and mean to describe numerical data. Is the student correct? Why?

*October 2, 2007*

**Calculus**

Thank you very much, drwls. I actually understand it now! (You saved me in Calculus!) :-)

*September 30, 2007*

**Calculus**

My teacher showed our class how to find the graph of a derivative using tangent lines. I can not figure this out. I would really appreciate it if someone could help me or explain it to me. Thank you very much for your help.

*September 30, 2007*

**Calculus**

That's what I was looking for. Thank you very much.

*September 16, 2007*

**Calculus**

I'm not sure how to calculate limits from graphs. I've tried many times but I can't figure it out. Are there any sites or tips you can give me? Thank you very much, I really appreciate it.

*September 16, 2007*

**Art and History**

Can anyone please help me design a memorial for three civil rights workers? Creativity is very important to me. The civil rights workers are: James Chaney, Michael Schwerner, Andrew Goodman. A little background info: James Chaney, Michael Schwerner, Andrew Goodman were civil ...

*May 19, 2007*

**History**

For a history project, I need to make a memorial for James Chaney, Michael Schwerner, Andrew Goodman. It needs to be extremely creative, yet I can't think of anything. A little background info: James Chaney, Michael Schwerner, Andrew Goodman were civil rights workers who ...

*May 16, 2007*

**math (final trig problem)**

Solve for x on the interval [0,π/2): cos^3(2x) + 3cos^2(2x) + 3cos(2x) = 4 I havent done trig for a while so what exactly does that mean in solving for x on that interval and how would i go about doing that? Where are you getting these tough trig questions?? how about ...

*April 30, 2007*

**math (more trig)**

how could you do this problem? tinyurl 39jlf9 (sorry i cant get it to post because it is an internet address i cant seem to figure it out and it seems like there is not enough information or maybe i didn't pay attention in class i was able to get the one side that you can ...

*April 30, 2007*

**math (trig)**

i have some problems doing trig the first one is: Show that cos(x/2) sin(3x/2) = ½(sinx + sin2x) i know that you are supposed to substitute all those trig function things in it but i kind of forgot how to the only that i can see substituting in is the double angle one ...

*April 30, 2007*

**chemistry**

Which solution would CaC2O4 be most soluble in? Na2C2O4 NaHC2O4 H2C2O4 NaCl HCl I due to common ions i think it would be one of the first three and i think it is Na2C2O4 because the other 2 have Hydrogen. Is it Na2C2O4? No, the common ions work just the other way; CaC2O4 will ...

*April 7, 2007*

**red panda bear**

Need to find good web site on a red panda bear. Seen lots none any good. Please check these sites carefully. Then post a specific question if you don't find what you need in these sites. http://www.wellingtonzoo.com/animals/animals/mammals/panda.html http://www.bbc.co.uk/...

*March 28, 2007*

**PLEASE HELP SOLVE RIDDLE**

What do you call a skinny white guy on the moon

*March 23, 2007*

**physics (check my answers)**

When the nuclear fuel in the sun is gone, the sun will collapse to a a. black hole b. white dwarf c. supernova d. neutron star My answer: I think its a black hole. If the mass of the Earth were suddenly doubled while the radius was unchanged, your weight would be? My answer: ...

*February 17, 2007*

**math**

how do you write an equivalent addition equation

*February 14, 2007*

**physics**

What's inertia? Inertia is the tendency of an object at rest to remain at rest; or the tendency of an object to continue moving if it is moving. In plain language, it's the tendency of an object to want to continue doing whatever it's doing. I had a definition ...

*February 8, 2007*

**chemistry**

The balanced equation doesnt seem to help because the thiosulfate is not in the equation, I think it is preventing the reaction from going backwards. THe equation is: 2iodide ion + hydrogen peroxide + 2 H3O --> elemental iodide + 4 H2O within the reaction there is also ...

*February 5, 2007*

**Chemistry**

How many moles of aluminum is needed to form 3.4 moles of aluminum oxide? 3.4 mol Al2O3 x (2 mol Al/1 mol Al2O3) = ?? mol Al. Note how the units we don't want cancel but the unit we want to keep remains.

*February 1, 2007*

**isomers molecular formula**

what are isomers that have the same molecular formula but a different arrangement of atoms called? geometric isomers, enantiomers, covalent isomers, structural isomers. They could be any of those except covalent isomers. I haven't heard of that one.

*January 17, 2007*

**pH scale**

If a base is added to water, the pH will increase, decrease, stay the same, or increase sometimes and decrease sometimes. I have asked several friends and the two answers I get is increase from 3 of them and stay the same from 2 of them. I am confused. And so are your friends...

*January 17, 2007*

**symbolic?**

Shakespeare has chosen to use a “poisoned sword” and the “poisoned chalice” to end the lives of the main characters in the play.why is this symbolic in the play? Since this is not my area of expertise, I searched Google under the key words "Shakespeare...

*December 1, 2006*

**reading**

ward for the framers to resolve there conflickthy was it so h They formed a small group, and worked it out rather quickly.

*November 6, 2006*

**novel= death on the ice english**

This book is a priceless story of 78 Newfoundland men who lost their lives tragically. The book is not "gay", you just care too much about stupid stuff instead of your schoolwork and haven't taken the time to appreciate literature. Grow up.

*September 22, 2006*

**Social Studies!**

rose and i are the only smart ones here

*September 9, 2006*

**Social Studies!**

cape cod

*September 9, 2006*

**Social Studies!**

2. its long island

*September 9, 2006*