Wednesday
April 23, 2014

Posts by KAYLA


Total # Posts: 1,086

chemistry
How many moles of H2(g) will be formed in the reaction between 0.99mol CaH2(s)and 1.43mol water ?

english- write a teacher
can you please give me an example here in the essay of a transitional word- i don't think i am understanding it really... author: Brent Staples my first victim was a woman-white, well dressed, probably in her early twenties. I came upon her late one evening on a deserted s...

math/chemistry
I under stand this but once i get the answers i really dont know how to do it these re the answers i get 1. 16950 2. 34.02777778 3. 18078 but i dont understand how to round it like would the first one be 10?

math/chemistry
I dont understand how to round to significant digits 565 lb * 30 ft 4900 ft/ 144 sec 786 hr * 23 miles per hour

english
I read this essay for my english class but i dont understand what this question is trying to ask me- How does staples avoid having the piece sound like a list even though he includes a lot of examples in small area? How is coherence established between all examples(look for tr...

Matematics
im taking pre calculus honors and its like impossible and im afraid im gonna fail...can you help me out?

math
how do i put these numbers in scientific notation? 1) 543.2 2) 6,700.008

11th grade English urgent
If you could create a time capsule, what valuable thing or memories would you put in it. Note you won't open it for 10 years

Math
HELP ME DO THIS!!! "write the prime factorization of each number using exponents"

english
ok thanks- i think i understand why it is d now! WAs C the answer to this one- I posted it before but in one of my sentences i used the wrong form so can someone please double check a. Native peoples of the American northwest shared a pantheistic belief in manitous, good and b...

english
I posted this before with my answer as the one being wrong as b, but that was wrong. CAn someone explain to me the one that doesn't make sense out of the four. a. The private hospital has never been accredited.... b. The crew's incompetent performance on the trip sugge...

english (2)
are these right as well? 1. a. Native peoples of the American northwest shared a pantheistic belief in manitous, good and bad spirits..... b. the Roman empire practiced pantheism in its acceptance of all the gods..... c. A complete pantheistic, she excels in sports, academics....

english
Thank-you!

english
can someone check these over. I have to pick out the sentence that is wrong. 1. wrong use of the word divinity a. Christian divinity students study Hebrew.... b. Dagon, the chief divinity of the Philistines, was represented as a half human half fish. c. Muslims do not regard M...

french
Also with this sentence..... would the answer be toi? toi, tu sais le faire, mais eux, ils ont besoin d'un coup de main. Mais je suis tellement pressé. Peux- _________ les aider?

french
i have to fill in the blanks with pronouns but im not sure which ones to use. ____________ et __________ s'écrivent depuis septembre.

english
oh ok...but how come the thrid sentence is still ok?

english
the first sentence does use the word defied???

english
which one of these os wrong use of the word deify? She deified tradition to becme the first black tennis player...... Jerry teases Carey about deifying his name by carvingit on trees..... since she passed the test set by the gods, she was deified... some parent seem to deify t...

math
a pool in the shape of a circle measures 10 feet across. One cubic yard of concrete is used to create a circular border of uniform width around the pool. If the border is to have a depth of 3 inches, how wide will the border be (1 cubic yard=27 cubic feet)

history
are there any popular Us history debates that i could write my thesis statement on?

math
A sugar molecule has twice as many atoms of hydrogen as it does oxygen and one more atom of carbon that oxygen. If a sugar molecule has a total of 45 atoms, how many are oxygen and how many are hydrogen?

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

Maths - Recipricals
How many 3/4 are in 3?

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?

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.

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

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?

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

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

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?

chemistry
Describe the parts of a calorimeter and the function of each part.

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

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

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.

chemistry
Explain what a saturated solution is. Give a specific example.

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.

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

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

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?

chemistry
Thank you for both!!

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?

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?

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 temp...

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. Summariz...

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 mole...

economics
Thank you!

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

algebra
How do I factor a^2-10ab+3b^2?

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 t...

Physics
and 49 m/s for the final velocity

Physics
actually, i got 122.5 m for the position

Physics
How would I know what the initial height is?

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 heig...

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 v...

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.

Music
Hey I am just wondering what I should do for an ABBA themed backround

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?

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

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 ...

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?

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

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 agr...

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?

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

chem
sorry i didnt mean to post this twice!

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?

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?

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 c...

chem
how do you determine the theoretical yield?

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?

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

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.

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

math
i would say A...but i would be just guessing...

science
well at least u tried...lol...

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

Health
How does mental and emotional health affect a person's lifestyle?

Health
yes it is.

Health
right

Math
73

Health
Why do behavioral choices affect an adolescence health?

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

ALGEBRA EXTREMELY NEED HELP
ummm... i feel srry 4 u...tht looks REALLY hard...

health
idk...

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

math
Explain how to reflect a polygon over the X axis and the Y axis.

english
what is the purpose of a fairy tale motiff?

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

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

Math
whats 26/100 in simplest form and whats 94/100 in simplest form and whats 92/100 in simplest form

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.

science
Why are bulls attracted to red?

Chem help?
9.24 *10^-5

music
What are the notes of a scale called?

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

ecology
what are the parts of a sunflower i need the pic with the big words

science
thats the one i found also but i need it for my science fair project

science
thats the one i found also but i need it for my science fair project

science
what are the parts of a sunflower ...i need the picture with the big words

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