Wednesday
February 22, 2017

# Posts by princess

Total # Posts: 189

chemistry
If 3 moles of a compound use 12 J of energy in a reaction, what is the Hreaction in kJ/mol? A. -4 kJ/mol B. -0.004 kJ/mol C. 0.004 kJ/mol D. 4 kJ/mol
March 14, 2012

chemistry- empirical formulas
since i don't have a teacher. I tried and this is what i came up with. 55.0/atomic massGa 55.0/69.723= 1.27 (rounded) 45.0/atomic massF 45.0/18.998404= 2.37 (rounded) If this is corect what do I do after this. If not can you help me with an headstart please.?
March 14, 2012

chemistry- empirical formulas
Calculate the empirical formula of a molecule with the following percent compositions: 55.0% gallium (Ga) and 45.0% fluorine (F). mass of 100g #of Moles in 100g of the compound Ga55.0% _____ ______ F45.0% ______ _______ c. Determine the molecular formula of a molecule having ...
March 14, 2012

chemistry
Which describes a source of radiation heat? A. Liquid or gas circulating to move the heat B. The sun sending out electromagnetic waves C. Two molecules colliding with each other D. Objects having kinetic energy because of their motion
March 13, 2012

chemistry
What must be known for the rate constant to be calculated from the rate law?
March 10, 2012

chemistry
MnO4–(aq) + Cl–(aq) Mn2+ + Cl2(g) (unbalanced) i. Write the reduction and oxidation half-reactions (without electrons). (.5 point) ii. Balance the equations for atoms (except O and H). (.5 point) iii. Balance the equations for atoms O and H using H2O and H+. (.5 ...
March 10, 2012

chemistry
MnO4–(aq) + Cl–(aq) Mn2+ + Cl2(g) (unbalanced) i. Write the reduction and oxidation half-reactions (without electrons). (.5 point) ii. Balance the equations for atoms (except O and H). (.5 point) iii. Balance the equations for atoms O and H using H2O and H+. (.5 ...
March 10, 2012

chemistry- Energy in Matter
Question 1: Kinetic Theory (7 points) a. Briefly state what the kinetic theory says. (2 points) b. Put the following molecules in order from least kinetic energy to greatest. (2 points) Cool water _____ Frozen water _____ Warm water _____ Water vapor _____ c. What temperature...
March 9, 2012

chemistry
A swimming-pool worker wants the pool's pH to be 7.2. She comes by to test the water and finds that the pH is 9.2. What should she do to correct this situation?
March 9, 2012

chemistry
What is the pOH of a solution with [OH-] = 2.0 10-2?
March 9, 2012

chemistry. but its done online and i don't have an teacher to sit down and explain the lessons to me.!!
March 9, 2012

1. List at least three things that your body strives to keep constant. Think about what aspects of your body overall, of one body organ, or of your blood stay nearly unchanged all the time. 2. Describe one way in which each of the items you listed in Part 1 could be at least ...
March 9, 2012

Acid and Base Equilibrium
What would happen to a weak base dissociation equilibrium if more products were added?
March 8, 2012

chemistry
What would happen if O2 were added to N2(g) + O2(g) 2NO(g) at equilibrium?
March 8, 2012

chemistry
A 75.0 sample of 1.50×10^−2 Na2SO4 is added to 75.0 mL of 1.26×10−2 Ca(NO3)2. What is the % Ca undissolved
March 8, 2012

chemistry
Write the standard cell notation for a galvanic cell with a silver cathode and a zinc anode.
March 7, 2012

chemistry
If one electrode in a galvanic cell is made of zinc (Zn) and one is made of silver (Ag), which metal would be the cathode and which would be the anode? Explain your answer.
March 7, 2012

chemistry
Think about the various processes that take place in the body or in the natural environment and come up with a list of at least fivethat you believe represent redox reactions. You don't need to include formulas. Jut substances names or provide a description of each process.
March 7, 2012

Physics
A 65.0-kg runner has a speed of 5.20 m/s at one instant during a long distance event (a) What is the runner’s kinetic energy at this instant? (b) If he doubles his speed to reach the finish line, by what factor does his kinetic energy change?
March 1, 2012

Science
A 2400-pound car exerts its maximum force of 750 pounds. What will be its minimum time needed to slow it down from 50 m/s to 10 m/s? Determine how far will the car travel in that time.
February 2, 2012

Psychology
Is this the correct answer! When making the "fundamental attributional error," we tend to overestimate the importance of ____ in judging the behavior of others. I choose A a. internal causes b. situational factors c. external causes d. motivation
December 12, 2011

Psycholofgy
Please help me! I have been on this one question for some hours now and still don't if this is the correct answer. I choose A Social influence ranges in intensity from the gentlest form _______, which involves changing one's behavior just because other people are ...
December 12, 2011

Social influence ranges in intensity from the gentlest form _______, which involves changing one's behavior just because other people are nearby, to the strongest form _______, which involves changing one's behavior because you are forced to. I choose C a. mere ...
December 12, 2011

Psycholofgy
Help is needed! Please help! Social influence ranges in intensity from the gentlest form _______, which involves changing one's behavior just because other people are nearby, to the strongest form _______, which involves changing one's behavior because you are forced ...
December 12, 2011

Psycholofgy
Help is needed! Please help! Social influence ranges in intensity from the gentlest form _______, which involves changing one's behavior just because other people are nearby, to the strongest form _______, which involves changing one's behavior because you are forced ...
December 12, 2011

Psycholofgy
Help is really needed! I need to know if this the correct answer. I choose B Your actions are most likely to agree with one of your attitudes when a. the actions reverse an old habit. b. the attitude is held with conviction. c. you know that others disagree with your position...
December 12, 2011

Psycholofgy
Can someone help me with this please! Is this the correct answer I have chosen? I choose C Jake finds guns attractive and desirable, while Arthur feels that guns are threatening and destructive. Their differing feelings toward guns represent the ______ component of their ...
December 12, 2011

Psycholofgy
Please help! Is this the correct answer! I said the answer is B Roles contribute to the streamlining of everyday interactions because they a. permit us to make fundamental attributions in social situations. b. allow us to anticipate the actions of others. c. frequently put us ...
December 12, 2011

Psychology
Help is needed! Please help! I said the answer is C Social influence ranges in intensity from the gentlest form _______, which involves changing one's behavior just because other people are nearby, to the strongest form _______, which involves changing one's behavior ...
December 12, 2011

Psychology
Help Please! Need to know if I'm the right track. If this the correct answer. I said the answer is C After Mrs. Keech's doomsday predictions failed, her followers suddenly became interested in convincing others they were right. This strong need to maintain consistency ...
December 12, 2011

Psychology
I need to know if this the correct answer The success or failure of attempted persuasion can usually be understood by considering the characteristics of the I said the answer is A a. communicator, group, and target behavior. b. communicator, message, and audience. c. messenger...
December 12, 2011

Psychology
Help is really needed! I need to know if this the correct answer. I choose C Your actions are most likely to agree with one of your attitudes when a. the actions reverse an old habit. b. the attitude is held with conviction. c. you know that others disagree with your position...
December 12, 2011

Psycholofgy
Help is needed badly! I have been on this one questions for the longest, so I'm trying to see if this the correct answer. I chose C If a person believes that his or her mind is being controlled by outside forces or that he or she is getting special coded messages from the ...
December 6, 2011

Psychology
Need help please! I need to know if this the correct answer. Please help! Regarding schizophrenia, which of the following statements is FALSE? I picked A a. Schizophrenia involves a "split personality," in which a person has two distinct personalities, one normal and...
December 6, 2011

Psycholofgy
Help Needed! I need to know if this the correct answer. Calvin has been on a "pleasure binge" for the last three days. He has cleaned out his bank account spending the money on anything that gains his attention. He would be described as loud, elated, and hyperactive...
December 5, 2011

Psychology
Help Please! I need to know if this the correct answer. I said the answer is C Which approach would explain that phobias are acquired through classical conditioning and the hypochondriac's "sickness behavior" is reinforced by sympathy and attention? a. ...
December 5, 2011

Psychology
Need to know if this the correct answer that I chose. Is the correct answer B Regarding personality disorders, which of the following statements is FALSE? a. Personality disorders are all maladaptive but vary in severity of impairment. b. Personality disorders typically emerge...
December 5, 2011

Psychology
Please help! I have read and read and still don't no for sure if this is the correct answer to this question. I picked A, but leaning more toward D Which approach would explain that phobias are acquired through classical conditioning and the hypochondriac's "...
December 5, 2011

math
a carpenter was putting up a shelf. the shelf needed to be 87 centimeters long but the piece of wood she had was 1 meter and 28 centimeters long. her saw was 46 cm long. how much did she have to cut off the piece of wood?
November 28, 2011

Math
Write the following argument symbolically and then determine its validity: 1. If you are fair-skinned, you will sunburn. 2. If you sunburn, you will not go to the dance. 3. If you do not go to the dance, your parents will want to know why you didn't go the dance. 4. ...
September 9, 2011

Chemistry
How much heat is necessary to change 5 grams of water at 10 degrees celcius to water at 70 degrees celcius?
May 19, 2011

Algebra
Owners of a recreation area are filling a small pond with water. They are adding water at a rate of 30 liters per minute. There are 700 liters in the pond to start. Let W represent the amount of water in the pond (in liters), and let T represent the number of minutes that ...
May 12, 2011

biology
explain how mitosis helps an organism to grow.
April 24, 2011

american history
April 18, 2011

Gegraphy 7
Sorry Thank u
February 13, 2011

Gegraphy 7
Tank you
February 13, 2011

Gegraphy 7
Who has practised rice-fish farming?
February 13, 2011

Math
I need help with this problem. Jason's credit cards beginning unpaid balance for August is \$2,000. During the August billing cycle he made a payment of \$200 and used card to purchase \$50 worth of groceries. Credit card charges 24% annual percentage rate and uses the unpaid...
January 17, 2011

Math
The morrison family bought a car for \$22,000 which was financed at \$600 per month for 40 months. The down payment was \$3,000. What is the installment price? What is the financial charge and amount financed?
January 17, 2011

math
Divide 2,340 by 90. If its a whole number than its divisible. If it appears to be something like 24.675757 then its not divisible. This seems to be easy math.
January 12, 2011

math
oh. ok. thank u. Conversation above seems to be dragging on.
January 12, 2011

chemistry
HELP PLEASE... what is the chemical equation for these situations..? a) there is a straight iron nail in the solidified gelatin solution. the gelatin solution was prepared with phenolphthalein and K3Fe(CN)6. b) same scenario as with (a) but the nail is bent c) same with (a) ...
January 11, 2011

chemistry
what is the chemical equation for these situations..? a) there is a straight iron nail in the solidified gelatin solution. the gelatin solution was prepared with phenolphthalein and K3Fe(CN)6. b) same scenario as with (a) but the nail is bent c) same with (a) but the nail has ...
January 11, 2011

Math
SOFIA HAS A PLATE THAT HAS 4 EQUAL SIDES, 2 PAIRS OF PARALLEL SIDES, AND NO RIGHT ANGLES. WHICH QUADRILATERAL IS IT?
December 1, 2010

Math
If a person rode 45 miles stopping at certain intervals in 9 times and if the intervals were equally apart. How far apart were they?
December 1, 2010

chemistry
Determine the chloride ion concentration in a solution containing 50.0 g MgCl2 dissolved in 1500 mL of solution. a. 0.350 M b. 0.700 M c. 1.40 M d. 3.17 M e. 6.34 M
November 10, 2010

chemistry
An aqueous solution of phosphoric acid, H3PO4, contains 285 g H3PO4 in 400 mL solution, and has a density of 1.35 g/mL. Calculate a. the weight % H3PO4 in this solution. b. the concentration in mol/L of this solution
November 10, 2010

us history
how did religion shape the development of colonial society in the Chesapeake?
October 7, 2010

physics
A 680 Hz tuning fork is held over a long vertical tube full of water. If the tube is 1.00 m long, how many resonances will be heard as the tube is allowed to empty from the bottom?
July 29, 2010

Algebra
I am havine trouble with this problem will someone please help me The perimeter of a rectangle is 68m The length is 10 m more than twice the width. Find the dimensions
June 10, 2010

What were the massachusetts fighting for?
April 18, 2010

a gardner wishes to encloe a rectangular 3000 square feet area with bushes on three sides and a fence on the 4th side .If the bushes cost \$25.00per foot and the fence costs \$10.00 per foot, find the dimensions that minimize the total cost and find the minimum cost
March 30, 2010

health
How do culture and health beliefs affect the spread of emerging disease? Can someone help me with specific examples?
March 15, 2010

MATH
HOW TO SOLVE Y=6X-11 AND -2X-3Y=-7
February 6, 2010

HOW TO SOLVE FOR SUBSTITUTION
February 6, 2010

SUBSTITUTION
HOW TO SOLVE FOR Y=6-11 & -2X-3Y=-7
February 6, 2010

SUBSTITUTION
HOW TO SOLVE Y=6X-11 & -2X-3Y=-7
February 6, 2010

geometry
a pentagon
January 20, 2010

math (geometry)
what is the distance from the pitcher's box to second base if the distance from the pitcher's box to home plate is 18 meters and the distance between bases is 27 meters
January 1, 2010

english
Flattery is as important a machine as the lever, isn't it? Give it a proper place to rest, and it can move the world."
December 7, 2009

uh I dunno
November 30, 2009

math
interpret an r value of -0.82. a)strong negative correlation B)weak negative correlation C)strong positive correlation D)no correlation
November 13, 2009

10 gm of silver nitrate solution is added to 10 gm of sodium chloride solution what change in mass do you expect after the reaction and why?
November 12, 2009

box. fix. fox. lax. hex. mix. nix. pox. sex. tax. vex. wax.
November 10, 2009

physcal science/physics
what is the kinetic energy in joules of a 1000 kg car travelling at 90km/h
November 10, 2009

Math
can you help me with this homework please
September 12, 2009

finite math
find the equation of the line 0.3,0.4 0.4,0.3 0.1,0.2 0.3,0.1
March 5, 2009

math
solve the equation by completing the square: x^2-9x-2=0
January 4, 2009

math
write the expression as a complex number in standard form 1+2i ----- 3-8i
January 3, 2009

computer
what are the signs and symptoms of a person suffering from dengue
December 7, 2008

science
what contributed most to the fish population dying during the 1970"s?
September 8, 2008

elective: contemporary child day care
A child's development is affected most by the A. financial status of the child's family B. social status of the child's family C. type of preschool the child attends D. quality of parenting and care the child receives from adults
March 19, 2008

math
( x2 + 6x-3) x2-4x = (5-x)x2-4x 32x+3- 6.3x+1- 9 = 0 6log5=a and 5log4=b 4log0,24=….. Are these 4 separate questions? Convert the second equation to 25.7 x = 5 then divide both sides by 25.7. Show your work and we will be glad to critique it for you
August 2, 2007

geometery
the answer is 4 because you divide 5x=20 to 5 this will cancel 5 and give you x=4
July 28, 2007

ethnics help
WOO HOO CHAPTER 11 THANKS THAT WILL HELP ME OUT...
November 2, 2006

orientalism of muslim and arab american
From UofP also and looked to see if I was close on what I thought orientalism it too...thank you for all your help...
August 6, 2006

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