# Posts by Student

Total # Posts: 865

algebra
Find the interval (or intervals) on which the given expression is defined: (x^2-7x+12)^(1/2)

chemistry
yes i believe e is true

chemistry
You react chemical A with chemical B to make one product. It takes 100 grams of chemical A to react completely with 20 grams of chemical B. What is true about the chemical properties of the product? a. the properties are more like those of chemical A b. the properties are more...

Physics
0.7 is the answers

chemistry
Calculate the number of moles of each ion in 10.5 mL of 0.205 M cadmium phosphate solution.

chemistry
What mass of water must be added to 0.5 mol of glucose to make a solution of 25 percent by mass?The molar mass of glucose is 180 g/mol.

chemistry
Find the formula for the compound that contains 72.4% iron and 27.6% oxygen.

Math
I have an input/output table and I need to find the missing values AND develop a rule for y if I am given x. Here are the values I have: Input (x) Output (y) 1 8 2 14 3 ? ? 24 ? 28 6 ? Help PLEASE!

Student
Um... pretty sure this was a problem for one of my classes. Not supposed to be on the internet. Is there anyway to request to have a post removed?

math
Yes

physics
A 175-N box is placed on an inclined plane that makes a 30.0° angle with the horizontal. Find the component of the weight force parallel to the plane's surface.

proofread please
These four religions have some similarities but are very different in their beliefs and their cultural differences to society. Christianity is one of the largest religious groups in politics but and also is the biggest religious group in the world. Christians are influential ...

Proof read please hw help
Religion plays a big part in people's daily life. The Christian and Catholic religion beliefs going to conformation, regular church services, Sunday school, and other church events. Members may also pray throughout the day at times such as before meals and before going to ...

PROOF-READ MY PARAGRAPH
recheck please The first right given to every American citizen at birth is the right of freedom religion. Therefore, anyone would be able to choose which religion to endorse. Religions such as Christianity, Catholicism, Islam and Judaism can have major impacts in societies for...

PROOF-READ MY PARAGRAPH
The first right given to every American citizen at birth is the right to freedom of speech and religion. Therefore, anyone would be able to choose which religion to endorse. Religions such as Christianity, Catholicism, Islamic and Judaism can have major impacts in societies ...

math
I don't have the answer, but thank you guys for it

paper!!final help plz
no help at alll form this website thx bye

paper!!final help plz
im doing a paper on anceiant agriculture i have wtiiten the paper but i need an into sentence just a good first sentencee

chemistry
Ksp = (Mg^2+)(pal)^2/[Mg(pal)2]- expression is incorrect. mg(pal)2 is not part of the ksp expression as the reactant is in the solid state. only Ksp = [Mg^2+][pal]^2 is relevant.

pre-algebra
Please help me solve these problems. 12^2+2 [(13+3)] / 2^2] -4(3)+5[7-6(-4)^2] -5(3)+3[9-6(-3)^2]

math
just skip my question i found the answer but this website helps alot but for once i found the answer b4 you guys thanks so much

math
how many inches are in cenimeters 25 ceinmeters = ? inchs

SCI 275 week 9 capstone question
pick the topic that you will do and then talk about y u would use that one over the others

physics help
a fireman D=50 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of 30 degrees above the horizontal. If the speed of the stream as it leaves the hose is 40.0 m/s at what height will the stream of water strike the building?

6th grade math
yes i think they all have to be single digit numbers. and the second thing is that it counts as two examples

6th grade math
i have to make a conjecture on if there is more or less than 50 numbers that can be written as product of 3 digit numbers w/o using the number 1 more than once as a factor. Example: 10 can be 1*2*5 and 24 can be 2*3*4

physics
A rock is thrown vertically upward with a speed of 14.0 m/s from the roof of a building that is 50.0 m above the ground. Assume free fall. In how many seconds after being thrown does the rock strike the ground? in s What is the speed of the rock just before it strikes the ...

geometry
FIGURE IS PARALEL

chemistry
since all the gases are in % (100 percent) you could easily convert those percentages to grams to find the moles of O2, N2, and Ar.

chemistry
Oxygen in the air is O2 like wise nitrogen is N2. mole fraction = n (mole of 1 component) / N (total mole of all components) Oxygen mole = 21 g /(32g/mol)=0.66 mole Nitrogen mole = 78 g / (28g/mol) =2.78 mole Argon mole = 1g / (40g/mol) =0.025 total mole =0.66 + 2.78 + 0.025 =...

Data Management (Math)
A Canadian postal code uses six characters. The first, third, and fifth are letters, while the second, fourth, and sixth are digits. A U.S.A zip code contains five characters, all digits. How many codes are possible for each country?

UCI Chemistry Webworks
G. i H. ii, iii, iv.

UCI Chemistry Webworks
weird, I got CVOH to have the longest bond lengths

Economics
Compare North and South Koreans economic provisions on private property and how it relates to the economic provisions of the U.S. On private property? Please help I am really confused and I don't understand this. Thank you :-)

student civics
thank you for the help

student civics
so would you aggre that this is a valid argument that i can present?

student civics
over time there has ben recorded evadence that gay guys are more likly to be fasly accused then strate guys....... cbsnews. com/stories/2010/12/06/politics/washingtonpost/main7121875.shtml

student civics
why are gay guys given less of a chance then strate guys in a goverment court.

physics
On a distant planet, the acceleration due to gravity is 5.30 m/s2, and the radius is 4600 km. Use the law of gravitation to calculate the mass of this planet.

Chemistry
Complete combustion of 7.70 g of a hydrocarbon produced 23.7 g of CO2 and 10.9 of H2O. What is the empirical formula of the hydrocarbon? I first calculated the moles of both the carbon dioxide and the water, but I have no idea where to go from there. Any assistance would be ...

COM/155
Thank you for your help!

COM/155
I believe I have found all the mistakes. What do you think? Identify Twenty Errors in the Passage Below Review the passage below, which contains 20 errors. Identify these errors by marking each of the errors in bold, and make your correction in parentheses after the error. ...

com/155
I'm assuming you moved on. Thank you for your time.

com/155
Are you still with me? Just checking.

com/155
oops! Identify Twenty Errors in the Passage Below Review the passage below, which contains 20 errors. Identify these errors by marking each of the errors in bold, and make your correction in parentheses after the error. Example: My cars interior is black. This must be marked ...

com/155
I think I found all the errors. What do you think?

com/155
ok....everything should be good now. Hopefully, you will agree. Why are great numbers of students choosing to pursue their college degrees using their home computers.(computers?) Benjamin Franklin said;(said,) A (“A)penny saved is a penny earned”. (earned.”) ...

com/155
Thank you so much for your feedback. I think I have everything fixed. What do you think? Why are great numbers of students choosing to pursue their college degrees using their home computers.(computers?) Benjamin Franklin said; A (“A)penny saved is a penny earned”. (...

com/155
I think I found them all. What do you think? Passage: Why are great numbers of students choosing to pursue their college degrees using their home computers.(computers?) Benjamin Franklin said; A (“A)penny saved is a penny earned”. This principle applies to the ...

com/155
Sorry, I posted the master by mistake.

com/155
The 20 errors are in the following categories: comma usage (six errors); question marks, apostrophes, and quotation marks (five errors); capitalization (six errors); and colons, semi-colons, and commonly misused words (three errors). Passage: Why are great numbers of students...

math (geometry EAT thereom)
i understand that in the EAT thereom the sum of the inside angles equal to the outside angle.. in my homework i have to find the angle of a inside angle, and it gives me 2 outside angles that are 130 degrees and 120 degrees, how do i find the inside angle ?

Physics
Can you show us the solution to this problem? Part of our activity, please. ASAP. :)

Alg 2
Find A1 in a geometric series for which Sn=210, r=-2, and n=6? Can someone lead me in the right direction?

Algebra 2
thank you!!!

Algebra 2
Find the sum of the first six terms of the geometric series 81 -27 +9 -... how do you work it??

physics
sorry. but i posted under the original question and got not response. but i tried this for part b and i got it wrong

physics
The pole vault landing pad at an Olympic competition contains what is essentially a bag of air that compresses from its "resting" height of 1.1 m down to 0.1 m as the vaulter is slowed to a stop. (a) What is the time interval during which a vaulter who has just ...

physics
i tried what you said for part b and it was marked wrong.please help

physics
The pole vault landing pad at an Olympic competition contains what is essentially a bag of air that compresses from its "resting" height of 1.1 m down to 0.1 m as the vaulter is slowed to a stop. (a) What is the time interval during which a vaulter who has just ...

please help dont know how to solve
i tried to solve for b but got it wrong. can you just tell me how i can get it started please.

please help dont know how to solve
The pole vault landing pad at an Olympic competition contains what is essentially a bag of air that compresses from its "resting" height of 1.1 m down to 0.1 m as the vaulter is slowed to a stop. (a) What is the time interval during which a vaulter who has just ...

physics
A cylindrical air duct in an air conditioning system has a length of 3.5 m and a radius of 5.00 m. A fan forces air (ç = 1.8 Pa·s) through the duct, such that the air in a room (volume = 242 m3) is replenished every 12 minutes. Determine the difference in ...

physics
A venturi meter is a device for measuring the speed of a fluid within a pipe. The drawing shows a gas flowing at a speed v2 through a horizontal section of pipe whose cross-sectional area A2 = 0.0600 m2. The gas has a density of ñ = 1.30 kg/m3. The Venturi meter has a ...

Chemistry
The pH of a 0.0050 M aqueous solution of calcium hydroxide is? Make sure to include all equations.

math
I was hoping that this question was answered... It's Greek to me!

physics help
i really don't know how to start this that's why i need help on this

physics help
Two thin rectangular sheets (0.15 m 0.50 m) are identical. In the first sheet the axis of rotation lies along the 0.15 m side, and in the second it lies along the 0.50 m side. The same torque is applied to each sheet. The first sheet, starting from rest, reaches its final ...

physics
A 1240 N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1970 N crate hangs from the far end of the beamThe angle between the beam and the horizontal is 30 degrees upwards and the angle between the horizontal and the ...

physics help me please
A 1220 N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1990 N crate hangs from the far end of the beamThe angle between the beam and the horizontal is 30 degrees upwards and the angle between the horizontal and the ...

Statistics
Evolutionary theories often emphasize that humans have adapted to their physical environment. One such theory hypothesizes that people should spontaneously follow a 24-hour cycle of sleeping and waking¡ªeven if they are not exposed to the usual pattern of sunlight. ...

Statistics
Evolutionary theories often emphasize that humans have adapted to their physical environment. One such theory hypothesizes that people should spontaneously follow a 24-hour cycle of sleeping and waking¡ªeven if they are not exposed to the usual pattern of sunlight. ...

physics
A worker pushed a 34.0-kg block 10.0 m along a level floor at a constant speed with a force directed 39.0° below the horizontal. If the coefficient of kinetic friction is 0.20, how much work did the worker do on the block?

Physics
What is the probability density at the fifth carbon atom if the electron is in the n=2 energy level? I have the formula as follows: Probability density = p5= (2/1.65) sin^2 (4x2pi/11) I know the final answer is 0.69 nm -1. However, I do not know how to retrieve this final ...

Physics
A supply plane needs to drop a package of food to scientists working on a glacier in Greenland. The plane flies 150m above the glacier at a speed of 110m/s. How far short of the target should it drop the package?

physics
Tarzan, who weighs 780 N, swings from a cliff at the end of a 12.0 m vine that hangs from a high tree limb and initially makes an angle of 49.0° with the vertical. Assume that an x axis extends horizontally away from the cliff edge and a y axis extends upward. Immediately ...

chemistry
92 is the correct answer.

calculus
Calculate the volume of the body which is obtained by rotating the curve y = ex 2px, 0  x  1 about the x-axis.

trig
Calculate the amplitude, period, phase shifts, and 5 points for y=2-sin(2piex/3)

trig
your amazing.

trig
Let Q be an acute angle such that sinQ=.6. Find the values of the following using Trig Identities: cosQ and tanQ

chemistry
Def, have a better understanding. Thanks so much

chemistry
each material listed, sorry for not being specific.

chemistry
Which of the following is considered a Lewis acid or a Lewis base. I- H2O BCl3 NH3 OH- H+ CO2 SO2

chemistry, chemical kinetics
Thanks bro, atleast I know the second question can be right.

chemistry, chemical kinetics
I keep getting these questions wrong, could someone please help. Thanks so much. Question 1 For the following overall reaction, the rate constant is 3.4x10^-2. A(g)+ 2B -> 2C + D What may be the rate reaction? Question 2 The rate law for this reaction is R=k[NO][Cl2] ...

physics/orbital speed
thnk you so much.!

physics/orbital speed
an asteroid orbits the sun at a constant distance of 4.44e+11 meters, the suns mass is 1.00*10^30kg, what is the orbital speed of the asteroid? Please explain step by step thanks

physics
A boy carries a sack on one end of a very light stick that is balanced on his shoulder, at an angle of 22.0 degrees up from the horizontal. The mass of the sack is 7.00 kg, and it sits 1.20 m from his shoulder. If his hand is 0.350 m from his shoulder, on the other end of the...

physics
A rotating water pump works by taking water in at one side of a rotating wheel, and expelling it from the other side. If a pump with a radius of 0.120 m starts from rest and accelerates at 30.5 rad/s2, how fast will the water be traveling when it leaves the pump after it has ...

Confidentiality of Health information
The newspaper phones a rehab clinic and asks if Sally celebrity is a patient and what is her status. The clinic should A. Tell the newspaper the truth B. lie and say she's not if, in fact she's there. C. acknowledge her presence but give no details on status. D. say ...

PHYSICS
IS the answer going to be (-60,60)

PHYSICS
A ball of mass m at rest at the coordinate origin exploded into three equal pieces. At a certain instant, one piece is on the x-axis at x=40cm, and another is at x=20cm, y= -60 cm. Where is the third piece at that instant.

CHEMISTRY
Why do the metallic elements of a given period (horizontal row) typically have much lower ionization energies than do the nonmetallic elements of the same period?

Grammar
I need this sentence to be separated into a gerund phrase "jumping out of airplanes sounds scary to me." Please help

Chemistry
why are the orbitals of the hydrogen atom described as probability maps? Why are the edges of the hydrogen orbitals sometimes drawn to appear "fuzzy"?

AP Biology
DOES ANYONE HERE ACTUALLY ANSWER A QUESTION -___________- Production of Protein: Protein Synthesis 1. transcription (could image as to photocopy a page named RNA of a book called DNA) 2. translation (read page named RNA and turn it into protein) Transcription: Creation of ...

Algebra 2
Can u explain please

Chemistry
Why is the light from an incandescent light bulb white?

Chemisty
In which cases are higher-energy photons released, with Li+ or Cu2+? How do you know?

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