Posts by Tom

Total # Posts: 1,497

Calculus
would the max be sqrt(2) at x = pi/4, and the min be -sqrt(2) at x = 5pi/4?

algebra
what is the fourth root of 16

Math/chemistry
how do I solve this equation? 106 g * 4.184 * (X-23 degrees celsius)

P.E.
encroachment Wide receiver interception Center punt offense

Chemistry
I think i got it. Is the answer 0.348837209?

Chemistry
Thanks bob, I've got the formula down, I'm now stuck on the equation. 9J=(8.60g) (X) (3.00 degrees celsius) How do I solve this equation?

Chemistry
It takes 9.00 to raise the temperature of an 8.60 piece of unknown metal from 22 to 25.0. What is the specific heat for the metal?

chemistry
5.0 g of NaNO3 is dissolved in 50.0 g of water. The initial temperature of the water was 21 degrees Celsius and the final temperature of the water is 15.7 degrees Celsius. 1)Calculate the heat of solution, DeltaHsolution. 2) calculate the heat of solution, DeltaHsolution, per ...

Chemistry
5.0 g of NaNO3 is dissolved in 50.0 g of water. The initial temperature of the water was 21 degrees Celsius and the final temperature of the water is 15.7 degrees Celsius. 1)Calculate the heat of solution, DeltaHsolution. 2) calculate the heat of solution, DeltaHsolution, per ...

Chemistry
5.0 g of NaNO3 is dissolved in 50.0 g of water. The initial temperature of the water was 21 degrees Celsius and the final temperature of the water is 15.7 degrees Celsius. 1)Calculate the heat of solution, DeltaHsolution. 2) calculate the heat of solution, DeltaHsolution, per ...

o-chem
which compounds below that have a vibration that is infrared inactive. and indicate the specfic vibration that is infrared inactive. 1) acetone 2) 1-butyne 3) 2-butyne 4) water 5) chlorine

chemistry
Two identical ballons are filled, one w/ argon the other w/ oxygen gas at the same temp. If the oxygen ballon leaks at the rate of 64 mL per hour, how many hours will it take the argon ballon to lose 195mL of argon gas? so far this what i have now i am stuck Its 64/r2 = sqrt(...

chem
Two identical ballons are filled, one w/ argon the other w/ oxygen gas at the same temp. If the oxygen ballon leaks at the rate of 64 mL per hour, how many hours will it take the argon ballon to lose 195mL of argon gas? formula: rate 1/rate 2=square root of m1/m2

physics
If the resultant velocity is 29.7 m/s and is directed at an angle of 22 degrees, what are the horizontal and vertical components?

Math
find W solve c=w squared X cubed/24t squared

physics
Is it possible to calculate the torque acting on a rigid body without specifying the origin?

English
1. The puma is chasing the deer. 2. Do you like rice cake? This rice cake has red beans. Some believe that red beans chase away ghosts and bring good luck. It's just superstition, right? 3. Americans eat turkey on Thanksgiving Day. However,Turkey is a country. You can not ...

English
Tom's sister has a son. What does Tom call him? 1. He calls him nephew. 2. He calls him "nephew." 3. He calls him "nephew". (Which answer is right?)

English
Is Eminem a male name or a female name? How do you pornounce the name?

computer business system
1. A list of context-sensitive commands usually activated by right-clicking a screen item. What's this call? a)option group b)drop-down list c)short-cut menu d)dialog box 2.A small preview image of a graphic is a) picture b) thumbnail c) icon d) pixel 3.Is the time taken ...

English
Thank you. (Does Sentence 1 sometimes mean Sentence 2? A little confusing....) 1. Giraffes are much taller than lions and elephants. 2. Giraffes are much taller than lions or elephants.

English
1. Giraffes are much taller than lions and elephants. (Does this sentence mean that giraffes are much taller than the height of lions plus the height of elephants?) 2. Giraffes are much taller than lions or elephants. (I think 'or' is much better. What is the ...

English
1. He is so kind to help me. (Is this correct? What other expressions can we use?) 2. I don't spend a lot of money in buying things. 2-2. I don't spend a lot of money on buying things. (Which is correct? Which preposition do I have to use before 'buying'?) 3. I...

mathematics
20*11= 20+100=

ICT
What is the weather going to bein the following states Lagos Oyo Benie Borno Niger

Math
solve using the multiplication principle. don't forget to perform a check. 12x=-96 the solution is x=

Health
Are there any homepages where we can see many kinds of rice cake on the Internet?

Social studies
What is winter solstice?

English
Q: Can I get you anything? (clerk) 1. I'm not ready yet. 2. 3. (Is the answer 1 correct? What other answers can we say?)

English
1. Australia is much larger than England and Korea. 2. Australia is much larger than England or Korea. 3. Australia is much larger than both England and Korea. (What is the meaning of #1? Does #1 mean #2 or #3?)

English
Would you let me know good websites wher I can watch educational videos for free? Thank you.

English
* You know what? (When do you use this expression? What is the difference between 'What do you know?' and 'You know what?')

English
What kind of gift do you want from Australia? (What is the meaning of 'from Australia? Does he mean the gift made in Australia? Or a gift from a person, the writer, in Australia?)

English
1. What is the opposite of "upside down"? 2. Don't tell me, because I already bought many postcards for you. 2-1. Don't tell me, for I already bought many postcards for you. 2-2. Don't tell me because I already bought many postcards for you. (What is the ...

English
I saw many animals such as koalas, a dingo, kiwis, cuscuses, kangaroos and emus in the zoo. I saw an emu stand in front of me. I saw a dingo stand by me. I saw kiwis gather around the fence. I saw a girl carry a koala. A mother koala is on a tree with her baby on her back. I ...

Social studies
Some more animals?

Social studies
Can you name some of the animals well-known in Australia?

English
How can we share Korean traditions? 1. We can make traditional tteok, rice cake, with our classmates. 2. We can make traditional kites in our classroom. 3. We can make traditional Korean dress at home. 4. We can play traditional Korean games such as baduk, janggi, and yunnori...

English
1. He dreamed a strange dream. 2. He had a strange dream. 3. He got a strange dream. 4. He dreamed strangely. 5. He dreamt a strange dream. (Are they all the same and acceptable?) 6. There are three rice cakes in the paper bag. 7. There are three pieces of rice cake in the ...

English
What did the family do? 1. The family gave special rice cake to their new neighbors. 2. They gave special rice cake to their new neighbors. 3. He or she gave special rice cake to their new neighbors. 4. He gave special rice cake to their new neighbors. (Which answers are ...

English
1. Let's go diving under the sea. 2. Let's go diving in the sea. 3. Let's go diving into the sea. (Which one is correct? Are all correct?)

English
1. They believe red beans can chase away ghosts and bring good luck. (What other expressions do you have instead of 'chase away'? Would you let me know similar expressions?) 2. She will see them by visiting Seoul Pooh's homepage where Pooh will put his pictures ...

English
Q: What did the Korean family give their neighbors? 1. They gave their new neighbors special rice cake to say hello. 2. He or she gave his or her new neighbors special rice cake to say hello. 3. He gave his new neighbors special rice cake to say hello. (Which answer to the ...

English
1. Using animals or thins on the page, make a comparative sentence as in the example. e.g. An airplane is much faster than a lion. (Is this one grammatical? Would you let me know a website related to comparative, superative, etc.?)

English
* in 2012 How do you read 2012 here?

English
* Sat, June 3, 2012 How do you read 2012 in the expression above?

English
1. Ask your friends for help, and they will help you. 2. Ask for your friends' help, and they will help you. 3. If you ask for your friends, they will help you. (Are they all grammatical and the same?)

math
thanks Ms. Sue, Ashley???

math
For the first day of school, our math teacher wanted us to write ten things to say instead of saying "shut up", I've only got a couple so far, any ideas?

chem
is it saturated

chem
it looks like it is above

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

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

chemistry help
What ratio does molarity express?

Chemistry
Hello, i am still needing help

Chemistry
Those aren't mole, those are concentraiton

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.

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

chemistry
Why don’t dipole-dipole forces have much affect on a gas?

chemistry
entropy increase as temperature increases why

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

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

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.

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

model un
what do ecuador plan to do to get rid of infectious disease.

model un help
can it be found in a more easy way

model un help
what has beem done in Ecuador on infectious disease and why

model un need help asap
unusually people that have the diseases

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

model un need help asap
thats my work

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 ...

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

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

chemistry need help
ok i understand but i have another question

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 ...

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

physics: true or false
true

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 ...

Business Statistics
.22

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 ...

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?

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

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

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 ...

math
thank you

is the answer
is the answer a+b that is what i got

math
a^2-b^2/a-b reduce to lowest terms

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

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

Algebra
x+5y=7 -2x-7y=-5

psychology
what is an example of the relationship between sensory adaption and negative adaption?

Chemistry 9
what were the firstsubstnces to be discovered

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...

science
how do you balance a chemical equation

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 (expletive) needs anybody?

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??

WHAT DOES THIS QUOTE MEAN??
WORK PAYS LATER. LAZY PAYS NOW.

math
Solve the following equation -5x + 1 > 11 Please include work

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...

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 ...

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