Tuesday
February 21, 2017

Posts by abby

Total # Posts: 1,120

Chemistry (equilibrium)
In the following equilibrium system, N2O4(g) <--> NO2(g), what happens to the color of the gas if the forward reaction speeds up? What happens if the reverse reaction speeds up? What happens if the forward and reverse reaction happen at the same time? NO2 is a reddish-...
April 1, 2007

chemistry (heat of fusion/vaporization)
i need help setting this problem up. You have an insulated container of water that has a temperature of 83.2 C, you continue to add ice until the temperature reaches .6 C and you remove the excess ice, your volume increased by 79.8 mL. What amount of hot water did you have in ...
March 26, 2007

Science Check
1)Two balls having the same mass of 1 kg roll toward each other, each moving at the same speed of 1 m/s. What is the combinded momentum? Would it be 0 kg m/s 2)A 30 kg girl and a 25kg boy face each other on friction free roller blades. The girl pushes the boy who moves away at...
March 9, 2007

chem
I have to balance an equation and I had to make the equation from an experiment we did. So far, my equation looks like this and I know what I have is correct: Cu(NO3)2+H20+NaOH----->Cu(OH)2 I think I probably need an N or a Na on the right side. What do you think? You don&#...
March 5, 2007

chem
Can someone please help me balance this equation? CH3OH + O2 ===> CO2 + H20 Thank you! CH3OH + O2 ===> CO2 + H2O To balance the H, put a two on the right. CH3OH + O2 ===> CO2 + 2H20 H and C are now balanced. O is balanced. Too easy. Are you sure that's right? We ...
March 3, 2007

chem
I can't seem to figure this out! I know I have to use mass to mass conversions though. Can someone help me out? Hydrochloric acid can dissolve solid iron according to the following equation: Fe + 2HCl to form FeCl2 + H2 a) How much HCl in grams would you need to dissolve a...
March 1, 2007

algebra
how do I help my son answer this question/ cary spent 1/3 of his class working on fraction problems and 3/6 of his class working on algebra problems. He spent the last 10 minutes of his class reading a chapter in his textbook. How many minutes long was the entire class? Thank ...
February 1, 2007

ANSWER to BEBE's riddle
Its the end of the lion
December 24, 2006

English 10th Literature
when you have subject verb agreement, do you always follow the rule?
December 12, 2006

Science
What are 3 reasons why salad dressing is a chemical suspension? Some of the liquid ingredients don't dissove in one another. That is why the dressing has to be shaken to blend together Some of the ingredients are solid spices or bits of cheese that do not dissolve I can&#...
November 26, 2006

history
Can you help me find information or perhaps give some on Nazi propaganda and its influences on third reich children I put your phrasing (Nazi propaganda and its influences on third reich children) into the search box at www.google.com and here are the results: http://www....
November 26, 2006

math
x= 6/4
October 29, 2006

social studies
i have heard it asserted by some that, as america has flourished under her former connection with great britain, the same connection is necessary towards her future hapinness... nothing can be more wrong... america would have flourished as much, and probably much more, had no ...
October 25, 2006

math
what dose the n stand for in the math question 54-n=24
October 4, 2006

math
what is the equation for 54-n=24
October 4, 2006

History
a) if no candidate for the president wins a simple majority of the toatal number of electoral votes, wat body has the power to choose the president? b) What margin is required to choose the president c)Where in the Constitution is the Electoral College described? d)The ...
August 27, 2006

History
I am having trouble finding where I can locate where the veto power is described (about Congress overriding a presidential veto). i think it is in Article one Where can I find information about the House of Representatives having the power to impeach the president? http://www....
August 27, 2006

Physics
Moving at 20 m/s , a remote controlled car of mass 1000kg hits a pile of sand and comes to rest in 10 s. Find the average force that acted to stop the car. The same car now hits a wall and comes to rest in 1s. Find the average force that acted to stop the car. Use knowledge ...
August 24, 2006

Science
Moving at 20 m/s , a remote controlled car of mass 1000kg hits a pile of sand and comes to rest in 10 s. Find the average force that acted to stop the car. The same car now hits a wall and comes to rest in 1s. Find the average force that acted to stop the car. Use knowledge ...
August 22, 2006

inverse trig functions
evaluate the following expressions: tan(sec^-1(5/3)) tan(sec^-1(25/7)) cot(csc^-1(5/3)) i know the answers.. i jus don't know how to solve them =( PLEASE help me I assume your sec^-1 notation denot4es the arcsecant function, etc. sec^-1 (5/3) = cos^-1 (3/5). Think of a 3,4...
August 28, 2005

  1. Pages:
  2. <<Prev
  3. 1
  4. 2
  5. 3
  6. 4
  7. 5
  8. 6
  9. 7
  10. 8
  11. 9
  12. 10
  13. 11
  14. 12