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August 22, 2014

Posts by TOM


Total # Posts: 1,045

chem
is it saturated
May 28, 2009

chem
it looks like it is above
May 28, 2009

chem
If 20 g KCL is dissolved in 100g of water at 20 degrees C, is the solution unsaturated, saturated, or supersaturated?
May 28, 2009

chemistry help asap
A solution of salt in water conducts electricity, but a solution of sugar does not. Explain why?
May 20, 2009

chemistry help
What ratio does molarity express?
May 18, 2009

Chemistry
Hello, i am still needing help
May 13, 2009

Chemistry
Those aren't mole, those are concentraiton
May 13, 2009

Chemistry
If 25.0mL of sodium nitrate solution (0.100mol/L) is added to 10.0mL of sodium carbonate solution (0.150 mol/L), what is the concentration of sodium ions in the resulting mixture? Assume the volumes are additive.
May 13, 2009

pre-calculus
standard form is y=mx+b where m is slope, x is x value in (x,y) and b is the y intercept. Find slope by using y2-y1/x2-x1
May 13, 2009

chemistry
Why don’t dipole-dipole forces have much affect on a gas?
May 11, 2009

chemistry
entropy increase as temperature increases why
May 11, 2009

chemistry help
What mass of Kbr is present in 25 mL of a 0.85 M solution of potassium chloride?
May 10, 2009

pre calc
what is the domain and range of f(x) x^3?
May 7, 2009

chemistry
Calculating Parts per million Helium gas, 3.0 x 10^-4 is dissolved in 200.0 g of water. Express this concentrartion in parts per million.
May 6, 2009

3rd grader needs help with grammar
Is it..... my Classmates and me or my classmates and I
May 6, 2009

model un
what do ecuador plan to do to get rid of infectious disease.
April 20, 2009

model un help
can it be found in a more easy way
April 20, 2009

model un help
what has beem done in Ecuador on infectious disease and why
April 20, 2009

model un need help asap
unusually people that have the diseases
April 20, 2009

model un need help asap
well can you give me some key ideas to point out
April 20, 2009

model un need help asap
thats my work
April 20, 2009

model un need help asap
does this first part work The republic of Ecuador, which has a population of 10 million, is one of the smallest of the Andean countries in South America. It covers only an area of 110,000 square miles. It has an extraordinary diversity of infectious diseases. Many of the ...
April 20, 2009

model un need help asap
How should I start a great position paper on Ecuador and its infectioud Disease?
April 20, 2009

chemistry
Contrast ionic and molecular substance in terms of the type of attractive forces that govern their behavior.
April 19, 2009

chemistry need help
ok i understand but i have another question
April 19, 2009

chemistry need help
The London dispersion force is the weakest intermolecular force. The London dispersion force is a temporary attractive force that results when the electrons in two adjacent atoms occupy positions that make the atoms form temporary dipoles. This force is sometimes called an ...
April 19, 2009

chemistry need help
A fellow student say , " All substance experience London disperison forces of attraction between particle." Is this etatement true? Explain your answer
April 19, 2009

CHemistry
Research the role of chemistry within a specific industry. Identify chemical processes upon which the industry relies. Explore environmental impacts of the industry that are related either to the chemicals it uses or produces. Procedure Choose one of the industries listed ...
March 30, 2009

Business Statistics
.22
March 29, 2009

grammar
Hello, I need a grammatical correction in the following excerpt from my essay, "We can see the benefits of having a husband for a woman in the following excerpt..." My teacher circled the phrase "having a husband for a woman" (which means that there is ...
March 22, 2009

Math
A coustomer wants to make a teepee in his back yead for his kids. He plans on using PVC plumbing pipe for the supports on the teepee, and he wants the teepee to be 12 feet across and 8 feet tall. Howlong should the PVC plumbing pipe be?
March 8, 2009

Math pizzazz worksheet answers
What's the answer to "what did the mama cow say to the baby cow"?
March 8, 2009

english
i thank you for the help, but other question how do i being it i'm not that that good in this.
March 3, 2009

english
Create a 3-5 page Request for Proposal (RFP) for bringing in outside trainers to train staff on the use of Microsoft Office® programs. # General overview of the RFP # The business requirements for the project, including the specific items (products and services) on which ...
March 3, 2009

math
thank you
February 28, 2009

is the answer
is the answer a+b that is what i got
February 28, 2009

math
a^2-b^2/a-b reduce to lowest terms
February 28, 2009

Algebra
(2y+1)/(y^2-y-6) ruling out value for y. which numbers can not be used in place of (y).
February 27, 2009

Math
Let f(x) = (lne^2x)/(x-1) for x>1. If g(x) is the inverse of f(x0, then g'(3) = ? A. 2 B. 1 C. o D. -1 or E. -2 if you can show/explain how to get that please, thanks
February 23, 2009

psychology
what is an example of the relationship between sensory adaption and negative adaption?
February 8, 2009

Chemistry 9
what were the firstsubstnces to be discovered
January 25, 2009

Sociology
I have already answered these questions but I am a little uneasy of the answers. Could someone please read them and provide feedback and if possible a little more detail for explainations? Q: What is the meaning of stratified? A: To classify or separate (people) into groups Q...
January 18, 2009

science
how do you balance a chemical equation
January 11, 2009

Ordinary people
I also don't get this, but wondering if this is right... What is Conrad perception of Karen and her state of mind? Is the answer for that this: Conrad talks to himself, saying "Okay Karen we'll see you around who needs you anyway who the !@#$%^& needs anybody?
January 8, 2009

Ordinary people
Chapter 7, Why does Karen say they should be careful about who they see? It is because Karen likes Conrad? OR that she's telling Conrad to control his life and live his life??
January 8, 2009

WHAT DOES THIS QUOTE MEAN??
WORK PAYS LATER. LAZY PAYS NOW.
January 5, 2009

math
Solve the following equation -5x + 1 > 11 Please include work
January 3, 2009

english - writing
I'm looking for a succinct way to help one of my sales guys write better. His syntax and use of verbs and adjectives is often weak. Here is a typical short example. What comments or observations would you make to help me help him? "Sure I have no problem to presenting...
January 2, 2009

cjs 210
CheckPoint: Police Stress Write a 350- to 700-word response describing each of the four categories of stress associated with the policing profession. Within each response, describe how this type of stress affects the officer’s job, social life, and personal life. How can ...
December 9, 2008

CHEMISTRY
Materials -sandwich-sized plastic ziplock bag -graduated cylinder -paper cup -rubber band -measuring spoons -vinegar -baking soda -twist-tie (like the closure for a loaf of bread) Part 1: The Reaction 1.Use the paper cup during this part of the experiment. 2.Measure out 25.0 ...
November 29, 2008

Chemistry
Physical properties are those that you can detect with your senses: sight, hearing, touch, taste, smell. With just a glass of water, you can explore physical properties of water. Activity: Investigating Water glass of drinking water,paper cup,pen,freezer,cooking pot,stove ...
November 29, 2008

Trigonometry
Use the power-reducing formulas to rewrite the expression in terms of the first power of the cosine. [#1.] (sin^4x)(cos^4x) [#2.] (sin^4x)(cos^2x)
November 29, 2008

chemistry
Materials -sandwich-sized plastic ziplock bag -graduated cylinder -paper cup -rubber band -measuring spoons -vinegar -baking soda -twist-tie (like the closure for a loaf of bread) Part 1: The Reaction 1.Use the paper cup during this part of the experiment. 2.Measure out 25.0 ...
November 29, 2008

Chemistry
Physical properties are those that you can detect with your senses: sight, hearing, touch, taste, smell. With just a glass of water, you can explore physical properties of water. Activity: Investigating Water glass of drinking water,paper cup,pen,freezer,cooking pot,stove ...
November 29, 2008

MATH
what multiplication fact can be found by using the arrays for 2x9 and 5x9?
November 24, 2008

history
What were Thomas Jefferson's most notable accomplishments during his time as president? Thanks for the help!
November 13, 2008

Algebra Dr Bob222
So if I understanding this for example I have x^2-6 I can factor because the negative sign I can get a middle term which would be (x+2)(x-3) expand it to (x^2 +2x-3x-6) (x^(2)-x-6) With x^2+6 I could not get a middle term because the sign is positive which shows me that ...
November 11, 2008

Algebra
I have a question I hope someone can explain it to me. We are working on Demonstrate that f actoring a polynomial. I was ask Why can you factor x² - 4 but you cannot factor x² + 4? How can you tell quickly which ones you can factor and which you cannot? I am not sure...
November 11, 2008

physics
so t clarify W can be found through alpha times time? also, what does I stand for?
November 11, 2008

physics
A horizontal 791 N merry-go-round is a solid disk of radius 1.48 m, started from rest by a constant horizontal force of 50.0 N applied tangentially to the edge of the disk. Find the kinetic energy of the disk after 3.01 s. I am having trouble on which formula to exactly use ...
November 11, 2008

Algebra
Equation: RCF=NCF/(1+Pi)^t Can somebody show me how to rearrange the equation to solve for Pi.
November 7, 2008

physics
A war-wolf or trebuchet is a device used during the Middle Ages to throw rocks at castles and now sometimes used to fling large vegetables and pianos as a sport. A simple trebuchet is shown in the figure. Model it as a stiff rod of negligible mass, 3.05 m long, joining ...
November 6, 2008

Logic
I know this is alot of text, but i'm having trouble understanding what my professor is asking... Study questions and Homework: St. Thomas Aquinas' arguments for the existence of God. Reading and Homework due: November 6, 2008. Work through the following, to see if you ...
November 5, 2008

physics
An ice tray contains 490 g of liquid water at 0°C. Calculate the change in entropy of the water as it freezes slowly and completely at 0°C. i tired doing -(.49kg)(2.26x106)/273.15K) but im not getting the right answr help pls!
October 30, 2008

math
im not getting the proper answer from this question: 5.0=k=c1/c2= 1.00g-x/15ml all over x/50 ml = (1.00-x)50/15x the answer comes out ot .40g
October 24, 2008

7th grade math
ok so the real eq is 5.0=k=c1/c2= 1.00g-x/15mlall over x/50 ml = (1.00-x)50/15x the answer comes out ot .40g
October 24, 2008

Science
When was first microscope invented?
October 24, 2008

physics
im sorry i tried using PV^1.4=22.3l but this was not hte right answer could you explain further the equation for a.
October 23, 2008

physics
Air (a diatomic ideal gas) at 30.0°C and atmospheric pressure is drawn into a bicycle pump that has a cylinder with an inner diameter of 2.50 cm and length 70 cm. The down stroke adiabatically compresses the air, which reaches a gauge pressure of 800 kPa before entering ...
October 23, 2008

physics
Air (a diatomic ideal gas) at 30.0°C and atmospheric pressure is drawn into a bicycle pump that has a cylinder with an inner diameter of 2.50 cm and length 70 cm. The down stroke adiabatically compresses the air, which reaches a gauge pressure of 800 kPa before entering ...
October 23, 2008

physics
Air (a diatomic ideal gas) at 30.0°C and atmospheric pressure is drawn into a bicycle pump that has a cylinder with an inner diameter of 2.50 cm and length 70 cm. The down stroke adiabatically compresses the air, which reaches a gauge pressure of 800 kPa before entering ...
October 23, 2008

physics
Air (a diatomic ideal gas) at 30.0°C and atmospheric pressure is drawn into a bicycle pump that has a cylinder with an inner diameter of 2.50 cm and length 70 cm. The down stroke adiabatically compresses the air, which reaches a gauge pressure of 800 kPa before entering ...
October 23, 2008

Psychology
difference between physiological and psychological needs. I am confussed on this question I have been studing the Maslow's Hierarchy of Needs I am assuming this so If I am getting this wrong please explain to me the difference. The Maslow theory gave 5 needs they are at ...
October 22, 2008

physics
A glass window pane has an area of 3.50 m2 and a thickness of 0.600 cm. If the temperature difference between its surfaces is 27.0°C, what is the rate of energy transfer by conduction through the window? I tried using the formula P=ka[(th-Tc)/l] my answer was thirteen but ...
October 19, 2008

Psychology
I am writing a paper and am stuck on one part can some give me an idea what i am needing. paper in which you analyze the function of emotions as motive. Be sure to address the following items on your analysis: This is the part I am stuck on Analyze at lease two research ...
October 17, 2008

science
definition amorphous solid
October 16, 2008

physics
One mole of an ideal gas does 3400 J of work on its surroundings as it expands isothermally to a final pressure of 1.00 atm and volume of 22.0 L. (a) Determine the initial volume in m^3. i tried using the formula w=integral f/i pdv 3400J= -(1.00atm)(.022m^3Vf-Vi) i eneded with...
October 16, 2008

physics
One mole of an ideal gas does 3400 J of work on its surroundings as it expands isothermally to a final pressure of 1.00 atm and volume of 22.0 L. (a) Determine the initial volume in m^3. i tried using the formula w=integral f/i pdv 3400J= -(1.00atm)(.022m^3Vf-Vi) i eneded with...
October 15, 2008

physics
A sample of ideal gas is expanded to twice its original volume of 1.00 m3 in a quasi-static process for which P = áV2, with á = 2.50 atm/m6, as shown in the figure. How much work is done by the expanding gas? i tried using the eq: w=-1/3(2.50atm/m^6)(1.013x10^5...
October 15, 2008

physics
Model rocket engines are sized by thrust, thrust duration, and total impulse, among other characteristics. A size C5 model rocket engine has an average thrust of 5.26 N, a fuel mass of 12.7 g, and an initial mass of 25.5 g. The duration of its burn is 1.90 s. (a) What is the ...
October 7, 2008

physics
The melting point of helium is -269.65°C, and the boiling point is -268.93°C. I have to convert these to K I get 3.5 and 4.22 When I plug these in it saYs i am within 10% of the answer I don;t no what else to put?
October 7, 2008

injuries
A fitness professional will most likely refer a student or client to a _______ to treat tight muscles that can pull bones out of alignment
October 7, 2008

physics
The mass of the Earth is 5.98x10^24 kg, and the mass of the Moon is 7.36x 10^22 kg. The distance of separation, measured between their centers, is 3.84x10^8 m. Locate the center of mass of the Earth-Moon system as measured from the center of the Earth. I tried using the ...
October 3, 2008

chem
i am trying to find the minimum volume of hot water needed to dissolve 100 mg of salicylic acid. when i did the calculations i got 100 ml of hot water is this correct??
September 30, 2008

physics
A 68.0 kg boy and his 45.0 kg sister, both wearing roller blades face each other at rest. The girl pushes the boy hard, sending him backward with a velocity 3.70 m/s toward the west. Ignore friction. How much chemical energy is converted into mechanical energy in the girl'...
September 29, 2008

Pre Algerbra
I'm confused on this one, If n(A) = 8, then how many proper subsets are there? I came up with 255. Is this correct?
September 13, 2008

algerbra
If n(A)= 8, then how many proper subsets does A have?
September 13, 2008

business law
Six months later, the same client comes to see you again. She shows you an advice received recently from the partnership¡¦s investment banker, Selby Bank, which suggests that the partnership should engage in some risky behaviour because it will produce a large ...
September 6, 2008

psychology
Can someone please give me an example how sense and perception and behavior are link together I am not sure if I am understanding it to good So If I am wrong please let me know. I believe they are link in how we see things is not always how are mind perceives it so when our ...
September 5, 2008

chemistry
a test liquid has a density of 1.1g/mL. when you pour some of it into a cup of water, what will happen?
September 1, 2008

physicis
if the motion of something was 120 m/s2 would it be the same value if in m/s?
August 28, 2008

?
supposee i needed to onvert 120 ms^2 to m//s how owuld i do that??
August 28, 2008

GEOMENTRY
WHAT IS THE DISTANCE BETWEEN POINTS (-5,-2)AND (6,4)
August 25, 2008

help
Estimate the power you deliver when starting to walk from a standstill, in W: & Your body radiates about 88 W in heat energy. How much energy, in J, is radiated in one hour?
August 24, 2008

physics
i was just wondering what approx is the change in PE in J when standing up from your chair and the KE when walking in J.
August 24, 2008

physics
i was just wondering what approx is the change in PE in J when standing up from your chair and the KE when walking in J.
August 24, 2008

chem urgent!!
What is the pH of the solution created by combining 12.00 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? i need to find the ph with HCL and then with hc2h3o2. i got 1.30 as my anser but this was wrong i multipled all these...
August 20, 2008

psychology
So is it safe to say there is really no actual theory for neurological psychology. Could I state that neurological psychology is a study on how peoples nervous system affects their behavior Biopsychologists often look at how biological processes interact with emotions, ...
August 14, 2008

psychology
What is neurological psychological theory? How did neurological psychological theory get established? I am doing a paperand can not find anything to explain this to me am i searching the wrong thing can some please help I need information to write this paper Thank you
August 14, 2008

grammar check
Please check and let me know which ones are wrong Thank you Tom 31.I had hoped the police would blame Bruce, not ___. _x_ me __ myself __ mineself __I 32.Some interviewers ____ have a clear sense of what they want in an employee, ask very tough questions. __ who _x_, who __ ...
August 13, 2008

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