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August 28, 2014

Posts by pat


Total # Posts: 663

Science
What is the Law of conservation of matter?
October 17, 2007

algebra
Find the slope of the line through the following pairs of points (-5,4)and (2,4)
September 30, 2007

Intermediate Algebra
The ratio of 7 more than a number to 2 less than that number is 13/4. Find the number
September 29, 2007

chemistry
I have two problems that I'm stumped on. I know the correct anwers but I'm having problems coming up with the co rrect anwsers. Here are the problems: 1) Magnesium has a density of 1.7g/cm^3 and iron has density of 7.9 g/cm^3. A block of iron has a mass of 819g. What ...
September 29, 2007

chemistry
A starship is crusing the interstellar with a velocity of 2174.799173 miles per second. How far would the starship have traveled in 2 years, 9 days and 4.50 hours? I've spent several hours on this problem and still I cannot come up with the correct answer. So, how do I ...
September 29, 2007

CHEMISTRY
A 40.0g SAMPLE OF AN ELEMENT COMBINES COMPLETELY WITH ANOTHER ELEMENT TO MAKE 112.2 OF A COMPOUND. WHAT MASS OF THE SECOND ELEMENT REACTED? hOW TO i GO ABOUT SOLVING THIS PROBLEM?
September 27, 2007

CHEMISTRY
WHEN A 50.0g SAMPLE OF AN ELEMENT COMBINES COMPLETELY WITH ANOTHER ELEMENT TO MAKE 78.4g OF A COMPOUND. WHAT MASS OF THE SECOND ELEMENT REACTED? HOW TO i SOLVE THIS PROBLEM?
September 27, 2007

chemistry
A 2.760 g sample of carbon was burned, yielding 10.120g of carbon dixode. How many grams of oxygen was taken up by the reaction? What ofrmula would I use to solve this problem?
September 27, 2007

Math
Jose, I do not understand your answers
September 25, 2007

Math
Write Each rational number in the form a/b where a and b are integers and b is not equal to 0. 1) 5 1/3 2) 73 3) -0.21
September 25, 2007

Math
is 35 pie an irrational number?
September 25, 2007

math
What is a finite, infinite and an empty number?
September 25, 2007

math
how would you change 0.3 into a fraction
September 25, 2007

Algebra 1
Use the quadratic formula to find the x value that will solve the equation 2x^2-3x+10=0
September 24, 2007

Math
I got 13 1/4. Could you show me how you got 14 1/4 please.
September 24, 2007

Math
5 3/4 - (-8 1/2) = ?
September 24, 2007

Math
Why did you change the 86 to a 85?
September 24, 2007

Math
73 1/2 -86?
September 24, 2007

Math
-731/2 - 86 =?
September 24, 2007

Algebra 1
Solve variable in terms of the remaining variables A = P(l + rt) for r
September 13, 2007

Chemistry
because the mass varies from penny to penny just like the different isotopes of elements
September 13, 2007

Chem 2
A mixture containing KCLO3, K2CO3, KHCO3, and KCL was heated, producing CO2, O2, and H2O (water) gases according to the following equations: 2KCLO3 -> 2KCL + O2 2KHCO3 -> K2O + H2O + 2CO2 K2CO3 -> K2O + CO2 The KCL does not reacnder the conditions of the reaction. If ...
September 13, 2007

math
.5 times .03???? just multiply them
September 13, 2007

math
let me see the problem
September 13, 2007

Chemistry 2
A mixture containing KCLO3, K2CO3, KHCO3, and KCL was heated, producing CO2, O2, and H2O (water) gases according following equations: 2KCLO3 -> 2KCL + O2 2KHCO3 -> K2O + H2O + 2CO2 2CO3 -> K2O + CO2 The KCL does not reacnder the conditions of the reaction. If 100.0g ...
September 13, 2007

Philosophy
developer of an effective cosmological argument
June 25, 2007

algebra
How do I solve this problem? (4x + 2)(x-3)=0 Set 4x+2 = 0 and solve for x. set x-3 = 0 and solve for x. You will have two answers for x.
May 3, 2007

Math
Evaluate [-7] - [-8] -7-(-8) = -7+8=+1 Always remember that a ( + and + gives us + ) and a ( - and - gives us + ) and a + and - gives us - Always when subtracting or adding take the sign of the biggest number which will be the sign of your answer , and work out if it is a + or...
April 16, 2007

Biology
what volume of air might you exchange in a minute?a)while resting b) during exercise http://www.arb.ca.gov/research/resnotes/notes/94-11.htm http://www.google.com/search?as_q=&hl=en&num=10&btnG=Google+Search&as_epq=how+much+air+do+we+breathe&as_oq=&as_eq=&lr=&as_ft=i&...
March 11, 2007

English
I want to know all symbols in this lyric and the meaning of "on the eve of my defeat" It's for my presentation Is anybody listening? Can they hear me when I call? I'm shooting signals in the air 'Cause I need somebody's help I can't make it on my ...
February 10, 2007

News Coverage-Please Help!
The presence of round-the-clock television news coverage and instantaneous Internet analyses often prevents a president from: 1. consulting with cabinet members and other top advisors before making decisions. 2. engaging in prolonged consideration of an issue before issuing a ...
January 23, 2007

History
Please help. Literacy tests worked to dany the right to vote to African Americans primarily because a.. all white voters had higher literacy rates. b. the tests were only required in Southern States. c, African Americans were asked questions that were more difficult than those...
January 21, 2007

History 2 questions
Please help if you can. 1. The idea that the people have the right to abolish an abusive and unresponsive government was FIRST formally expressed by Americans in the a. Constitution b. Petition of Right c. Declaration of Rights d. Declaration of Independence I think it's b...
January 21, 2007

History
Which of the following was formally amended to the constitution a. equality of rights for women b. prohibition of alcoholic beverages c. prohibition of child labor d. balanced federal budget I know that the 19th amendment is woman suffrage, but the 18th amendment is the ...
January 20, 2007

U.S. Government
When facing the threat that a country might be developing chemical and biological weapons of mass destruction for use by terrorists groups, a libertarian would most likely: A. oppose any military action by the U.S. because libertarians are pacifists. B. oppose any military ...
January 20, 2007

U.S. Government
A traditional conservative would most likely oppose a federal law to: 1. encourage free and fair trade in competitive markets. 2. promote family values 3. preserve law and order and enforce private business contracts 4. require businesses to make contributions to charitable ...
January 20, 2007

History again
I just need to check if I am right. Thank you. All of the following influenced the Framers in developing the Constitution EXCEPT a. State constitutions b. John Locke's "Two Treatises of Government" c. Virginia's royal charter d. British tradition I am almost ...
January 20, 2007

History
I need help because I want to make certain I am right. The United States Constitution reserves to the States all powers not delegated to Congress or denied to the States, meaning that the States a. hold almost no power b. have little responsibility to the Federal Government c...
January 20, 2007

History
I am not sure of this answer. Please help. The main reason that States hold many important powers is that the a. Framers distrusted a strong central government. b. Constitution does not grant many States' rights. c. Constitution describes a unitary state. d. States have ...
January 20, 2007

SCIENCE
Which currents are cold and which are warm? North Equatorial current, Equatorial counter current, South equatorial current, Peru current, Florida current, Guinea current, and Falkland current. I have found out 11 others but not these. http://ioc.unesco.org/oceanteacher/...
January 16, 2007

PHYSICS HELP
If the external world does work on the system, the quantity of work is negative or positive? I said it was positive and Bob Pursley said I was right, but a Physics student said that it is negative. Please help if you can..
January 10, 2007

PHYSICS HELP
I am having a real problem with this question. Through the process of doing work, energy can move between the external world and the system as the result of forces or work. I say it's forces, but someone else says it's work because only work and energy can be ...
January 10, 2007

PHYSICS HELP
Draw an arrow in the box that shows the direction of the force. Please help. I want to be sure. W > 0 W = 0 W < 0 ___ ____ ____ ___ ____ ____ d-> d-> d->
January 10, 2007

PHYSICS HELP
Thank you, Bob. If the system does work on the external world, the energy of the system remains the same. Is this true or false? False. THe total energy in the system has decreased.
January 10, 2007

PHYSICS HELP
If the external world does work on the system, the energy of the system increases , decreases or remains the same? I think it increases. Am I correct? The system increases. Yes, you are correct.
January 10, 2007

PHYSICS HELP
If the external world does work on the system, the quantity of work is negative. Is negative right or is it positive? If you are writing the system equations, the work done by external forces will be a + number, indicating an increase of energy to the system.
January 10, 2007

PHYSICS HELP
Please check to see if these statements are right. Through the process of doing work, energy can move between the external world and the system as the result of forces. I believe this is true. Please verify. Yes, true.
January 10, 2007

religion , edit
Today, there are many different variations of Buddhism. Buddhism is not simply a religion or philosophy, but a way of life. Many people have incorporated Buddhism into their current traditions or religion. In any variation of Buddhism, the fundamental practices have remained ...
January 10, 2007

AP chem
i. The reducing agent is the one that undergoes oxidation (the one that loses electrons). Mn goes from being -1 to +2 meaning that Mn will be the reducing agent. But since the reducing agent is the whole compound, MnO4- is the R.A>
January 4, 2007

SCIENCE
True or False Test have been conducted to mine uranium from seawater. Just not sure. Pat== I checked at www.google.com by typing in "uranium sea water" without the quotation marks and I received a lot of "hits" but almost all that I saw (all but one) were ...
December 20, 2006

SCIENCE
Is this true or false? I am confused. Tests have been conducted to mine uranium from seawater. My book says that at one time or another Japan, Germany, and the United States have expressed interest in the extraction of uranium. Japan set up a land-based test plant in 1986 to ...
December 20, 2006

SCIENCE
The most common ion dissolved in river water is chloride, carbonate, sodium, phosphate, or nitrate. I think the answer is sodium chloride but the answer has these two separated. Is the answer just sodium? No, the answer is not sodium. The answer is chloride ion. Later on in ...
December 20, 2006

SCIENCE
Please see if I have the right answer. The three atoms in a water molecule are held together by oxygen bonds, covalent bond, surface tension, hydrogen bonds, or gravity. I think it's covalent bonds. Am I right? Water molecules, even inflowing water, can link together by ...
December 8, 2006

SCIENCE
Seawater of average salinity freezes at about: a. 32 degrees F b. 0 degrees C c. -2 degrees C d. -10 degrees F I think it's -2 degrees C but want to be sure. Please check for me. Thanks That's right. The freezing temp of sea water is given in that last wikipedia ...
December 8, 2006

SCIENCE AGAIN
Thanks so much for all your help. These multiple choice questions always have me confused. Here goes: The density of fresh water either a.)reaches a maximum at 4 degrees C, b.)decreases with decreasing temperature below 4 degrees C, c.)increases with decreasing temperature ...
December 8, 2006

Science
I'm having another problem. These multiple choice questions confuse me. Can you please help again. The density of seawater is either greater than freswater, increases with increasing depth in the oceans, changes with changing temperature, increases with increasing salinity...
December 8, 2006

Science
I'm going crazy! The heat necessary to change the state of water between a solid and a liquid is called the latent heat of vaporization, latent heat of solidification, latent heat of fusion, latent heat of liquefaction, or none of the above. I thought it was none of the ...
December 8, 2006

OCEANOGRAPHY HELP
Sediments composed of particles of one size are called ___________. I think it's well-sorted but am not sure. You are correct. See: http://72.14.253.104/search?q=cache:BtQzENSvQ4MJ:flightline.highline.edu/wmoses/Ocean101/OC101PowerPoints/Sediments.ppt+Sediments+%...
November 25, 2006

social studies
What is slash and burn method? in terms of farming? what is your question in relation to? Check this site. http://en.wikipedia.org/wiki/Slash_and_burn slash and burn (during indian times) is when they slashed the bark off of trees and then burned then burned the trees for ...
October 29, 2006

science
A science student drops a rok down a mine shaft. It takes 3 sec. for the rock to hit the bottom of the shaft , at what speed of the rock just before impact? 32 feet per second per second is the acceleration rate of earth. At the end of second 1 the speed is 32 feet per second...
October 24, 2006

science
a train is going 95mph you walk 5mph toward front of train. in relation to passanger seated on train how fast are you moving? The seated passenger is fixed in the same frame of reference as the train. Therefore the walking passenger has a relative velocity of 5 mph relative to...
October 18, 2006

physics
i thought i had the answer right, but i didnt! wat are the first few steps?? an elevator (mass 4850kg) is to be designed so that the maximum acceleration is .0680g. what are the maximum and minimum forces the motor should exert on the supporting cable? i know the answers but ...
October 1, 2006

physics
ab elevator (mass 4850kg) is to be designed so that the maximum acceleration is .0680g. what are the maximum and minimum forces the motor should exert on the supporting cable? i know the answers but dont know how to come up with the work! (5.08*10^4N and 4.43*10^4N) ...
October 1, 2006

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