Saturday
February 28, 2015

Posts by KAYLA


Total # Posts: 1,162

math
I can't get this question. what is the rule in this problem: 8,27,64
August 28, 2008

Maths - Recipricals
How many 3/4 are in 3?
August 23, 2008

physics/science
My teacher put Marti Gras beads in a plastic beaker she pulled some beads out and let them fall to the ground. It looked as if the beads were not touching the rim of the beaker and was just flying over it. What exactly was it doing?
August 17, 2008

chemistry
A 0.500M solution of a weak acid, HX, is only partially ionized. The [H+] was found to be 4.02 x 10^-3 M. Find the dissociation constant for this acid.
August 5, 2008

chemistry
What is the pH if the hydrogen-ion concentration is 6.8 x 10^-7 M?
August 5, 2008

chemistry
Calculate the hydrogen-ion concentration [H+] for an aqueous solution in which [OH-] is 1 x 10^-11 mol/L. Is this solution acidic, basic, or neutral?
August 5, 2008

chemistry
Calculate the concentration of a silver ion when the solubility product constant of AgI is 10^-16
August 4, 2008

chemistry
What is the equilibrium constant for the following reaction? 3A + 2B <---> 2C
August 4, 2008

chemistry
A 55.0-g piece of copper wire is heated, and the temperature of the wire changes from 19 degrees C to 86 degrees C. The amount of heat absorbed is 343 cal. What is the specific heat of copper?
August 4, 2008

chemistry
Describe the parts of a calorimeter and the function of each part.
August 4, 2008

chemistry
Which of the following usually makes a substance dissolve faster in a solvent? A: lowering the temperature B: decreasing the number of particles C: agitating the solution D: increasing the particle size of the solute
August 4, 2008

chemistry
If a crystal added to an aqueous solution causes many particles to come out of the solution, the original solution was___? A: saturated. B: an emulsion. C: supersaturated. D: unsaturated
August 4, 2008

chemistry
A 10-g mass of krypton occupies 15.0 L at a pressure of 210 kPa. Find the volume of the krypton when the pressure is increased to 790 kPa.
August 4, 2008

chemistry
Explain what a saturated solution is. Give a specific example.
August 4, 2008

chemistry
Describe the structure of the water molecule and indicate how this structure is responsible for many of the unique properties of this vital compound.
August 4, 2008

chemistry
Thank you, that's what i did, And i got the answer right!!
August 4, 2008

chemistry
I have no idea how to do these questions. So i don't know.
August 4, 2008

chemistry
A mixture of gases at a total pressure of 95 kPa contains N2, CO2, and O2. The partial pressure of the CO2 is 24 kPa and the partial pressure of the N2 is 48 kPa. What is the partial pressure of the O2?
August 4, 2008

chemistry
Thank you for both!!
August 4, 2008

chemistry
A rigid container of O2 has a pressure of 340 kPa at a temperature of 713 K. What is the pressure at 273 K?
August 4, 2008

chemistry
The volume of a gas is 250 mL at 340.0 kPa pressure. What will the volume be when the pressure is reduced to 50.0 kPa, assuming the temperature remains constant?
August 4, 2008

chemistry
A crude oil burned in electrical generating plants contains about 1.2 % sulfur by mass. When the oil burns, the sulfur forms sulfur dioxide gas: S (s) + O2 (g) = SO2 (g). How many liters of SO2 (d=2.60 g/L) are produced when 1.00X 10 to the 4th kg of oil burns at the same ...
August 1, 2008

chemistry
Now "react" methane (CH4) with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O). Start with one molecule of methane and one molecule of oxygen. Continue reacting molecules of CH4 and O2 until all the reactant atoms have been used to form products. ...
August 1, 2008

chemistry
36 colored paper clips (12 each of 3 different colors) 1.Each paper clip represents a single atom. Designate a different color of paper clip to represent atoms of oxygen (O), hydrogen (H), and carbon (C). Makes two molecules each of hydrogen (H2) and methane (CH4) and six ...
August 1, 2008

economics
Thank you!
June 29, 2008

economics
Analyzing Information Discuss the benefits and problems associated with multinational corporations establishing production facilities in an LDC.
June 29, 2008

algebra
How do I factor a^2-10ab+3b^2?
June 27, 2008

Physics
A man pulled a nail our of a board with a crowbar. The nail was 2 in. from the fulcrum of the crowbar, and the effort applied was 36 in. from the fulcrum. If the theoretical effort applied was 10 lb., what was the force of friction between the board and the nail? How far did ...
June 23, 2008

Physics
and 49 m/s for the final velocity
June 12, 2008

Physics
actually, i got 122.5 m for the position
June 12, 2008

Physics
How would I know what the initial height is?
June 12, 2008

Physics
A ball is dropped from rest and falls for 5 s. What are its position and velocity at that instant? So the variables I can define are v1=0, v2= x t=5 Other than that I don't know what to do in this problem. I'm assuming position is the height so I'm looking for ...
June 12, 2008

physics
an arresting device on a carrier deck stops an airplane in 1.5s. the avg. acceleration was 49 m/s2. what was the stopping distance? what was the initial speed? so i think v2=0, t=1.5, a= 49, so i need d and v1. i got v1=73.5 m/sec and d= 55 m. i took 0=v1-49(1.5) to get that ...
June 12, 2008

chem
how would you set this problem up? An unknown gas effusees at .850 times the effusion rate of nitrogen dioxide, NO2. Estimate the molar mass of the unknown gas.
June 2, 2008

Music
Hey I am just wondering what I should do for an ABBA themed backround
May 30, 2008

chem
if the length of Mg is 2.7 cm and the mass per meter of Mg is .981 how do i find the mass of the Mg?
May 28, 2008

chem
Given the length of Mg in cm and the mass per meter of Mg, how do i find the mass?
May 28, 2008

Macroeconomics
Assume that preferencse are given by u(c,L) = 2*ln(c) +ln(L). The wage rate is $15 and the person has 120 hours of time available. Profits are 0. Taxes are 0. Write down two equations that describe the constraints faced by this consumer. Find an equation for the Marginal Rate ...
May 24, 2008

math
How can I figure this out? Five integers have an average of 69. the median is 83. the mode is 85. the range of the 5 integers is 70. what is the second smallest of the 5 integers?
May 21, 2008

math
The minute hand is pointing ot the twelve. The hour hand is perpendicular to the minute hand. What two times could it be?
May 20, 2008

government
"The united states in congress assembled shall never engage in war...nor coin money,nor regulate the value thereof, nor [spend] the sums and expenses necessary for the defense and welfare of the united states...nor borrow money on the credit of the united states...nor ...
May 15, 2008

chem
how would you figure this out? if 500 mL of hydrogen are colected over water at 20 degrees c and 745 torr, what will the volume of the dry gas be at STP?
May 14, 2008

205
Michael Jackson has had more plastic surgery than anybody else in California. You can bet he’s had more than anybody in Connecticut!
May 8, 2008

chem
sorry i didnt mean to post this twice!
May 6, 2008

chem
how do you calculate the number of millilliters of 1 M required for an amount of moles? and how would i find out what remains in the beaker when distilled water is evaporated from a beaker?
May 6, 2008

chemistry
how would you calculate the number of milliliters of 1 M HCl required for .212 mol of HCl?? and how could i find out what remains in the beaker when distilled water is evaporated in a beaker?
May 6, 2008

Zoology
as the size and volume of flying birds increase, surface area of wings cannot increase proportinal to general body surface area. is this a true statement? explain your answer using words and math. bird size seems severely constrained wheras aircraft size is not...why? do the ...
May 3, 2008

chem
how do you determine the theoretical yield?
April 28, 2008

chem
how would you find the ratio of moles of copper produced to moles of iron used is the moles of iron used is .067 and the moles of copper produced is .01?
April 27, 2008

5TH GRADE MATH NEED HELP ASAP
place fraction on the number line 5/3, 7/4, 4/6, 12/8, 2/3
April 22, 2008

math
I have no clue how to figure this out! Can you tell me how to figure it out? 2 positive numbers are in a ratio of 9 to 10. if the lesser number is decreased by 6 and the greater number is decreased by 25, the resulting ratio is 2 to 1. find the greatest of the original numbers.
April 22, 2008

7th grade science
what is the protective sheild covering what segment of the thorax? its in grasshopper dissection
April 22, 2008

math
i would say A...but i would be just guessing...
April 17, 2008

science
well at least u tried...lol...
April 17, 2008

Health...different then the 1 i just posted...
How do coping strategies effectively relate to a healthy lifestyle?
April 17, 2008

Health
How does mental and emotional health affect a person's lifestyle?
April 17, 2008

Health
yes it is.
April 17, 2008

Health
right
April 17, 2008

Math
73
April 17, 2008

Health
Why do behavioral choices affect an adolescence health?
April 17, 2008

ALGEBRA EXTREMELY NEED HELP
search for algebra slover on here...it should no the answer...
April 17, 2008

ALGEBRA EXTREMELY NEED HELP
ummm... i feel srry 4 u...tht looks REALLY hard...
April 17, 2008

health
idk...
April 17, 2008

health
How does using apporpriate strategies when dealing with difficult situations as an adolescence affect a healthy lifestysle?
April 17, 2008

math
Explain how to reflect a polygon over the X axis and the Y axis.
April 14, 2008

english
what is the purpose of a fairy tale motiff?
March 25, 2008

english
visions shadow by simon ortiz what are the concerns for the environment, love of nature, or the symbol of the eagle.
March 17, 2008

Math
If I have the problem; m+24=3. How do I figure that out?
March 3, 2008

Math
whats 26/100 in simplest form and whats 94/100 in simplest form and whats 92/100 in simplest form
February 23, 2008

Biology
it has something to do with the nerves being more active there, but i cant put it into a sentence. my most sensitive areas are my eyes, my teeth, and my tongue.
February 19, 2008

science
Why are bulls attracted to red?
February 10, 2008

Chem help?
9.24 *10^-5
February 7, 2008

music
What are the notes of a scale called?
February 3, 2008

Math
how would i solve this? 2x+2y=12 would i solve for x or y? Im stuck!!
January 24, 2008

ecology
what are the parts of a sunflower i need the pic with the big words
January 22, 2008

science
thats the one i found also but i need it for my science fair project
January 22, 2008

science
what are the parts of a sunflower ...i need the picture with the big words
January 22, 2008

Math
What are the positive integers between 1 and 100 that are only divisible by three numbers: one, the number itself and a prime number?
January 22, 2008

graphing linear equations
i need help graphing the equations 3y+4x=12, x-2y=3, AND 3x+2y=8 Quick... thanks!!!
January 7, 2008

Math
4*4*4=64
December 5, 2007

sci 275
so can anyone please help me with this questions?
December 3, 2007

sci 275
yes I think humans can harvest forest resources in an environmentally friendly way
December 3, 2007

sci 275
Do you believe that humans can harvest forest resources in an environmentally friendly way? or should national forests be left in their natural state in which resources are not used to benefit humans?
December 3, 2007

chemistry
nonpolar
November 30, 2007

Psychology
What are the potential benefits and drawbacks of a test that attempts to measure skills, abilities, or traits?
November 25, 2007

Algebra 1
is this a linear equation 4xy + 2y = 9
November 17, 2007

social studies
what is a graphic organizer
November 8, 2007

Engineering
How does an air conditioner use the first and second laws of thermodynamics?
October 28, 2007

Algebra
whatere dum ass
October 26, 2007

math
how do i solve this using trig identities? 2 csc^2x = 3 cot^2x-1
October 16, 2007

Algebra
find the coordinates of the vertex for the parabola defined by the given quadratic function f(x)=(x+7)^2-6
October 13, 2007

Math
What is the difference between an equation with two variables and an equation with three variables?
October 12, 2007

math
Which label describes the following? 3x +6 =10 A). Expression B). Linear equation C). Equation which is not linear
October 7, 2007

math
Which label describes the following? 3x +6 =10
October 7, 2007

History :]
To what extent did the compromises made during the writing of the Constitution sow the seeds for sectional discord later on?
October 5, 2007

biology
The removal of which of the following would have the biggest impact on marine ecosystems? a. fishes b. whales c. shrimp D. plankton
October 2, 2007

biology
I need to know how calicum is made and is it a combined element? I can't find info anywhere.Please help! Thank you!
September 27, 2007

Science
Does the strength of the bond have anything to do with the time it takes to melt a substance? Explain.
September 18, 2007

Chemistry
I'm having trouble with converting units. My teacher wants us to show work but I can't figure out how to do it. An example is, 35 mL = ____ dL. By showing work, how do you do that?
September 14, 2007

Spanish
We're supposed to translate the following sentence into spanish: It smashed cars and destroyed buildings. The verb our book told us to use for "smashed" is "hacer pedazos." Would you say "Hizo pedazos los coches..." or "Hizo pedazos de ...
September 13, 2007

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