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October 22, 2014

Posts by Joe


Total # Posts: 2,103

chem
If 25 grams of solid ice at-20 degrees C is heated to gaseous water at 125 degrees C, how much energy is required?
April 13, 2008

chem
If one gram of solid ice at -20 degrees C is heated to gaseous water at 125 degrees C how much energy is required?
April 13, 2008

Geography
the west indies
April 8, 2008

math
Given that y varies inversely as x, use the values of x and y from the following to calculate the value of a. x 2 32 y 8 A
April 7, 2008

chem
I think so
April 6, 2008

chem
Why does acetic acid have a higher boiling point than 1-bromoethane if the molar mass for 1-bromoethane is higher?
April 6, 2008

chemistry
You can't do that^ because you get a pH of over 14. Anyone else know how to get the answer? I heard somewhere that it was 11.6, how do you get that?
April 6, 2008

AP Chemistry
Thank you, but I think I have answered my own question. I believe it is e. 1, 2, 3, and 4 because hydrogen bonding causes the melting and boiling point to rise, vapor pressure to fall, and makes the molecules cling together more, therefore higher surface tension. Still, your ...
April 4, 2008

AP Chemistry
Which of the following properties can be attributed to hydrogen bonding? 1. high melting point 2. high heat of vaporization 3. low vapor pressure 4. high surface tension a. 1 and 3 b. 2 and 3 c. 2, 3, and 4 d. 1, 3, and 4 e. 1, 2, 3, and 4
April 4, 2008

AP Chemistry
so the answer is 3 only?
April 4, 2008

AP Chemistry
Which action(s) will decrease the equilibrium concentration of a non-reacting gas in water? 1. decreasing the temp. of the water 2. decreasing the volume of water 3. decreasing the pressure of the gas above the liquid a. 1 only b. 2 only c. 3 only d. 1 and 3 e. 1, 2, and 3
April 4, 2008

AP Chemistry
thanks
April 4, 2008

AP Chemistry
To prepare 1.000 kg of 5.5 percent by mass KCl (aq), one may dissolve a. 994.5 g KCl in 5.5 g of water b. 5.5 g KCl in 994.5 g of water c. 5.5 g KCl in 1000.0 g of water d. 55 g KCl in 945 g of water e. 55.0 g KCl in 1000.0 g of water
April 4, 2008

AP Chemistry
thx
April 4, 2008

AP Chemistry
Ammonia, NH3, is used as a refrigerant. At its boiling point of -33 degress Celcius, the enthalpy of vaporization of ammonia is 23.3 kJ/mol. How much heat is required to vaporize 355 g of ammonia at -33 degrees Celcius? a. 1.12 kJ b. 152 kJ c. 251 kJ d. 486 kJ e. 8.27 x 10^3 kJ
April 4, 2008

chem
Nitrogen(75.5 kPa), oxygen (19.2 kPa), carbon dioxide(0.05 kPa) and water vapor(4.3 kPa) are the usual atmospheric components. What is the total atmospheric pressure in kPa?
March 30, 2008

chem
The local atmospheric pressure is 560 mm Hg. what is the pressure in pascals? Do you think you are at sea level or higher than sea level?
March 30, 2008

English
B And c i think
March 24, 2008

English
Thanks
March 24, 2008

English
A person who studies rocks for fun Rock _ _ _ _ _ I don't have a clue
March 24, 2008

biology
chemical reactions that require the presence of oxygen
March 23, 2008

geography
does japan have a good or bad economy
March 13, 2008

Calculus
Ryan is wrong. Reiny is correct. h = 6.6
February 23, 2008

physics
1.3
February 23, 2008

the novel
the answer is c
February 20, 2008

trig
tanx=cotx
February 18, 2008

Chemistry HELP
juicy couture jeans and handbags
February 14, 2008

Chemistry HELP
do the boot AYYEEEE
February 14, 2008

math
gjjkjb
February 14, 2008

ecology
what does an ecologist study?
February 10, 2008

Math (Precalculus)
I have no idea how to do these problems: Given that U and V are in Quadrant II and sinU = 3/5 and secv = -ã13/3, find: A) cos 2U B) sin (v/2) c) cos(U+V)
February 7, 2008

Japanese
What is the Japanese translation of this sentance: "I think that that woman is Mary's Japanese teacher" Could the answer pleased me typed in English. My computer does not recognize Japanese font.
February 5, 2008

Japanese
What is the Japanese translation of this sentance: "I think that that woman is Mary's Japanese teacher"
February 5, 2008

Philosophy
The Continental Rationalists not only articulated elaborate views on substance but also utilized substance as the foundation of their metaphysics. Nevertheless, their views on substance, though similar in some respects, differ in important ways. How do their views on substance...
February 4, 2008

Philosophy
Leibniz presents monads as simple substances. Monads are infinite in number, unextended, and windowless, and each mirrors the universe. As a consequence, Leibniz contends that the universe manifests both order and perfection. Why does Leibniz give monads these characteristics...
February 4, 2008

Philosophy
Benedict Spinoza argues that substance is infinite and that God or Nature is the one substance. As a monist, Spinoza rejects ontological dualism. From this perspective, how does Spinoza understand thought and extension monistically, and what does he mean by characterizing the ...
February 4, 2008

English
What are the physical traits of Lena, Walter, Beneatha, Ruth, George, and Joseph in A Raisin in the Sun byLorraine Hansberry?
January 26, 2008

Georgia Studies/Social studies
i need to know what the war strategy that proved most advantageous to the north was.
January 23, 2008

Science
During Active and Passive transport is ATP required?
January 23, 2008

English
those
January 15, 2008

English
"No one knew the answer to the riddle posted on the Web site." One is the pronoun
January 15, 2008

Chemistry
Assume that you take a 10.0g ice cube out of the freezer at -10 C. How much ice would be left unmelted after you added 340 J of energy?
January 15, 2008

Chemistry
What mass of the ionic substance KBr would result in the same osmotic pressure as 34.2 g of nonionic sucrose (C12H22O11)? A little step by step walk thru would help me. Thanks
January 15, 2008

Algebra
Correct!
January 15, 2008

Biology
nucleotide<chromosome<nucleus
January 15, 2008

English II
its arranged by time
January 14, 2008

Math
Well how to i get t on one side
January 13, 2008

Math
-5t = t+12
January 13, 2008

Math
t equals -12
January 13, 2008

Math
-5t = t+12
January 13, 2008

Physics
Ah, I really appreciate that. Thank you.
January 10, 2008

Physics
A mass m is attached to a spring of constant k. The spring oscillates in simple harmonic motion (amplitude A). In terms of A: a) At what displacement from equilibrium is the speed half of the max value and b) at what displacement from equilibrium is the potential energy half ...
January 10, 2008

algebra
you must graph the line y = -2x + 5 and the horizontal line y = 4. The point at which their intersect is the solution to the system.
January 10, 2008

Algebra 1
y = 3x - 12, so 4x - 5(3x - 12) = 16 you can now solve for x.
January 10, 2008

Calculus
WHAT?
January 7, 2008

Calculus
Find the derivative of f 0f x. f(x) = x^2 - 8x - 17 at x = 4
January 7, 2008

Coterminal Angles
Thx! I really do understand it now. What if they give me like pi/9.... How do i find two coterminal angles (one positive and one negative) in RADIANS.
January 6, 2008

Coterminal Angles
I need help with this.. it's for my midterm review. My midterm is next week. I would appreciate the help. Determine two coterminal angles (one positive and one negative) for each angle. The answer must be in degrees. a) 36 degrees b) -120 degrees c) 300 degrees d) -420 ...
January 6, 2008

Algebra 1
well.....yes 4 but what if it was
January 5, 2008

English
I'm having trouble diagramming sentences. How do you diagram an object complement? Ex. The stories made them proud of their achievements. Proud is an object complement, right? I can't figure out how to diagram it. Also, how do you diagram things when you have three or ...
December 12, 2007

Government
David Mayhew belives that congress is ineffective because its members are more concerned about their reelection than the enactment of effective policy. I have to agree with this statement and say why I believe he is correct in a debate during class.
November 27, 2007

science
what are three of the populations in an ecosystem near you
November 26, 2007

practical math
How is the answer 10? The 15 total all play instruments. The balance of 10 are of students who "play" instruments.
November 25, 2007

Poetry Part II
Okay so I have poem here that I need to interpret including I have to discuss the issue of gender as it relates to this poem. So here's the poem "A Place For Everything" When my mother spoke of sadness and widows, my father muttered "Well, well," and ...
November 24, 2007

Poetry
I've written down random some thoughts regarding the poem. Let me know what you guys think as I would appreciate it. On the surface the poem looks like a story of the love a couple who has been married forever until the husband died three days ago. With the birthday card ...
November 23, 2007

Poetry
The compare and contrast between each poem has to be about gender and the author's view on gender.
November 23, 2007

Poetry
Thank you for your help. It's easy to at least a make up a story behind the poem, but what is difficult is I have to compare and contrast this poem to other short stories and poems, and they seemingly are incomparable. Comparing this poem to Edwin Arlington Robinson or any...
November 23, 2007

Poetry
I think he just hid it in the drawer because he's as a clever as a boy. It's supposed on the surface I think make people think "Wow they are still just as in love as a newlywed couple", but I think what's it really saying is the husband isn't all that...
November 23, 2007

Poetry
Do you think he's just being his normal self, not taking what she says seriously, or is he consciously trying to avoid the subject of mortality? To me it sounds like he just doesn't want to listen or talk about those things and he'd much rather read the newspaper. ...
November 23, 2007

Poetry
Since it says "seventy tomorrow" I think her birthday in the poem is the next day so the card was meant for her upcoming birthday.
November 23, 2007

Poetry
Okay so I have poem here that I need to interpret including I have to discuss the issue of gender as it relates to this poem. So here's the poem "A Place For Everything" When my mother spoke of sadness and widows, my father muttered "Well, well," and ...
November 23, 2007

Math
5m-9+4m
November 20, 2007

Math
x-9x+3+8x-3
November 20, 2007

PreCalc
Consider the tip of each hand of a clock. Find the linear velocity in millimeters per second for each hand. a. second hand which is 30 millimeters. b. minute hand which is 27 millimeters long. c. hour hand which is 18 millimeters long. Please tell me how you got the answer. ...
November 18, 2007

Calculus
isn't there a way you do it with the derivatives?
November 13, 2007

Calculus
So you just plug -1 into the equation to get the limit?
November 13, 2007

Calculus
find the limit. use L'Hopital's Rule if necessary. lim (x^2+3x+2)/(x^2+1) x -> -1
November 13, 2007

Chemistry
CaCl2(s) Ca2+(aq) + 2 Cl-(aq) H = -81.5 kJ A 14.0 g sample of CaCl2 is dissolved in 130. g of water, with both substances at 25.0°C. Calculate the final temperature of the solution assuming no heat lost to the surroundings and assuming the solution has a specific heat ...
November 10, 2007

unscramble
afsedrniru
November 8, 2007

English- In Cold Blood
Does In Cold Blood by Truman Capote have a protagonist? is it Herb Clutter, Dewey, or Perry? If so, does that make it a creative work? If not, explain how it is simply eloquent journalism.
November 7, 2007

statistics
fadsa
November 5, 2007

Physics
Two metal beams are joined together by four rivets, as the drawing indicates. Each rivet has a radius of 5.0 10-3 m and is to be exposed to a shearing stress of no more than 4.6 108 Pa. What is the maximum tension T that can be applied to each beam, assuming that each rivet ...
November 3, 2007

Physics
A water bed has dimensions of 1.83 m 2.17 m 0.247 m. The floor of the bedroom will tolerate an additional weight of no more than 6660 N. Find the weight of the water in the bed and determine whether it should be purchased.
November 1, 2007

Language
What is a proper noun
October 25, 2007

chemisrty
what is sulfur and what are the uses please make it simple as possible:D
October 23, 2007

Chemistry
3. What experimental problems would confront you if you attempted to determine the concentration of the metal ions in solutions of each of the following reagents? a. Cr +3 which has a maximum absorbance at 407 nm with absorbtivity of 15 M -1 cm -1 and another at 574 nm with ...
October 14, 2007

physics
10300.5
October 11, 2007

Help with introduction
Sorry, about the other post.. I didn't know I wasn't going to be able to put more information in the question. Well the thing is I am doing the VFW essay for my history class. We are suppose to write about "My role in honoring America's veterans" but I&#...
October 6, 2007

math
how would you regroup 4 tens to find the difference between 341 and 228
September 26, 2007

finance
Should We Purchase That New Copier? Campus Print Shop is thinking of purchasing a new, modern copier that automatically collates pages. The machine would cost $22,000 cash. A service contract on the machine, considered a must because of its complexity, would be an additional $...
September 25, 2007

finance
Imagine a country that is operating a fixed exchange rate relative to the dollar. The currency is trading at a forward discount of 50 percent, and rumors have been circulating that the government may pursue a large devaluation. Do you expect the devaluation will be equal to 50...
September 24, 2007

English
What was the main problem in the Crucible?
September 19, 2007

math, economics, game theory
If C = 500 + 3/4[GDP- 100], I = 300, G = 400, Xn =- 10 and full employment GDP is 210 less than current GDP, the proper action would be to increase taxes by?
September 10, 2007

Calculus: Derivatives
I'm having trouble understanding what derivatives in calculus (instantaneous speed) is. Can someone please explain it to me, or provide some easy links to learn from? Thanks!
September 9, 2007

elementary math
what does it mean on the instructions if it says "Use a ten-frame and O to make a ten. Find the sum."
September 6, 2007

calculus
1. how do u simplify (1/a+h+1 - 1/a+1)/h 2.what's the difference quotient? is it like what u start with e.g. f(x)=1/x+1 or is it the big equation ur suppose to plug it into eg. f(a+h)-f(a)/h or is it what u plug into the f(x)=1/x+1 to get for e.g. f(a)/a+1?
September 6, 2007

science
when temperature is off, we call it end point - what is it?
September 6, 2007

Math(algebra)
1.) Consider the function F defined by the eqation: f(x)=3x+2 a.)find each of the values F(1),F(2)and F(3). I need help on figuring out the steps on this killer
September 2, 2007

Math(Geometry)
Haha dude do you have the book with the zebras and ferris wheel on it? Cause I got assighned the exact same problems. heres all I got. 7. OTTFFSSENT 8. JFMAMJJ 9. need help with 10. 2,4,8,16,32,64,128 11. need help with 12. 1, 1/2, 1/3, 1/4, 1/5, 1/6 13. George, John, Thomas, ...
August 22, 2007

algebra
The sqrt of 3(8^sqrt of 7 - 4^sqrt of 3)
July 8, 2007

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