Saturday
November 22, 2014

Posts by Aaron


Total # Posts: 421

Chemistry
I have to figure out which Atmospheric Pressure and Vapour Pressure pairs would cause boiling.
May 17, 2010

Chemistry
In which pair(s) would boiling occur? (Each pair corresponds to one row of the table) a. 760 {mm,Hg} 700 {mm, Hg} b. 480 {torr} 480 {mm, Hg} c. 1.20 {atm} 912 {mm, Hg} d. 1020{mm,Hg} 760 {mm, Hg} e. 740 {torr} 1.00 {atm}
May 17, 2010

Chemistry
Use molar volume to solve the following problems at STP. Find the volume mL occupied by 0.400 mole He. Find the number of grams of neon contained in 10.2 L Ne gas
May 17, 2010

math
Suppose a jar contains 5 red marbles and 33 blue marbles. If you reach in the jar and pull out 2 marbles at random without replacement, find the probability that both are red.
April 22, 2010

physics
A length of organ pipe is closed at one end. If the speed of sound is 344 m/s, what length of pipe is needed to obtain a fundamental frequency of 74 Hz? Answer in units of m.
April 1, 2010

Physics
If the speed of sound in air is 340 m/s, what is approximately the length of a shortest air column closed at one end that will respond to a tuning fork of frequency 140 Hz? Answer in units of cm.
April 1, 2010

Physics
If the speed of sound in air is 340 m/s, what is approximately the length of a shortest air column closed at one end that will respond to a tuning fork of frequency 140 Hz? Answer in units of cm.
April 1, 2010

chemistry
Calculate the molar heat of neutralization in kJ/mol of the reaction between HA and BOH given the following information: The temperature change equals 7C, 50 mL of 1 M concentration of Acid 50 mL of 1 M concentration of Base Heat capacity of the calorimeter is 6.5 J/C. ...
March 28, 2010

Math
What this person means is : cosQ = 5 and tanQ = 2sqrt6
March 23, 2010

College Chemistry
I don't have an answer.
March 21, 2010

Tennessee State University
How much heat is absorbed by the calorimeter if the temperature change is 12 C and the calorimeter constant (Heat Capacity) is 3.3 J/K?
March 21, 2010

Tennessee State University
How much heat is absorbed by the calorimeter if the temperature change is 12 C and the calorimeter constant (Heat Capacity) is 3.3 J/K?
March 21, 2010

Tennessee State University
How much heat is absorbed by the calorimeter if the temperature change is 12 C and the calorimeter constant (Heat Capacity) is 3.3 J/K?
March 21, 2010

physics
Two 72.0 kg hockey players skating at 5.25 m/s collide and stick together. If the angle between their initial directions was 125 degrees, what is their speed after the collision?
March 19, 2010

precalculus
an airplane flying at 550 miles per hour has a bearing of N 58(DEGREES)E. After flying 1.5 hours, how far north and how far east has the plane traveled from its point of departure?
March 11, 2010

Statistics
Ok please help me. Here is my stats question Suppose there is a 20% chance of striking oil at a certain location. An oil company drills at 5 different spots. What is the probablity of them striking oil on at least one of the spots? Any help is greatly appreciated
February 3, 2010

science
what is the biggest animal alive today
February 2, 2010

Math - Trigonometry
Math - Find the amplitude, period, phase shift - y=cosPi/2 (x+1/3)
February 1, 2010

Math - Trigonometry
Find the amplitude, period, and phase shift - y=cosð/2 (x+1/3)
February 1, 2010

Science
The basic units of heredity that determines traits are?
January 21, 2010

Physics
The block in lies on a horizontal frictionless surface and is attached to the free end of the spring, with a spring constant of 56 N/m. Initially, the spring is at its relaxed length and the block is stationary at x = 0 m. Then an applied force with a constant magnitude of 3.0...
January 17, 2010

5th grade
lightning is an example of electricity. what is another type of energy asociated with lightning
January 13, 2010

Statistics
D. It can be biased by one or two extremely small or large values. The advantage is that it takes every number into account. The disadvantage is that if you have a very large or very small number disproportionate to the rest then you calculations will be slightly off.
December 17, 2009

English - Shakespeare
I was wondering if you could help me find literary devices in this passage in "Much Ado about Nothing" by Shakespeare: BENEDICK That I neither feel how she should be loved nor know how she should be worthy, is the opinion that fire cannot melt out of me: I will die ...
December 16, 2009

English
I was wondering if you could help me find literary devices in this passage in "Othello" by Shakespeare: Desdemona: "My noble father, I do perceive here a divided duty: To you I am bound for life and education; My life and education both do learn me How to ...
December 4, 2009

Calc
An oil refinery is located on the north bank of a straight river that is 2 km wide. A pipeline is to be constructed from the refinery to storage tanks located on the south bank of the river 3 km east of the refinery. The cost of laying pipe is $300,000 per km over land to a ...
November 30, 2009

Calc
The rate (in mg carbon/m3/h) at which photosynthesis takes place for a species of phytoplankton is modeled by the function below, where I is the light intensity (measured in thousands of foot-candles). P = (120 I) / (I^2 + I + 1) For what light intensity is P a maximum?
November 30, 2009

geography
i have to make a collage of four towns in britain help !!!!
October 24, 2009

Chemistry
Find moles first: That is M x L = 0.20 x 0.500L = ? Then convert from moles to grams with moles/molar mass. You want to use the molar mass of NiSO4.6H2O: 0.10 mol x 262.84 g/mol = 26.28 g of NiSO4.6H2O
October 20, 2009

math statistics
The average price of a gallon of unleaded regular gasoline was reported to be $2.34 in northern Kentucky (The Cincinnati Enquirer, January 21, 2006). Use this price as the population mean, and assume the population standard deviation is $.20. 1. What is the probability that ...
October 19, 2009

statistics math
The unemployment rate is 5.8% (Bureau of Labor Statistics, April 3, 2003). Suppose that 100 employable people are selected randomly. 1)What is the probability that exactly six people are unemployed (to 4 decimals)? 2)What is the probability that exactly six people are ...
October 18, 2009

math
any can help me please?
September 22, 2009

math
can anyone show me how to work this problem out thanks in advance The Census Bureau provides data on the number of young adults, ages 18–24, who are living in their parents' home (the data include single young adults who are living in college dormitories because it is...
September 22, 2009

math statistics/probability
can anyone show me how to work this problem out thanks in advance The Census Bureau provides data on the number of young adults, ages 18–24, who are living in their parents' home (the data include single young adults who are living in college dormitories because it is...
September 22, 2009

math
Hello I am having trouble trying to figure out how to do the last 2 questions in this word problem In an article about investment growth, Money magazine reported that drug stocks show powerful long-term trends and offer investors unparalleled potential for strong and steady ...
September 22, 2009

math
Hello I am having trouble trying to figure out how to do the last 2 questions in this word problem In an article about investment growth, Money magazine reported that drug stocks show powerful long-term trends and offer investors unparalleled potential for strong and steady ...
September 22, 2009

college math statistics
Hello I am having trouble trying to figure out how to do the last 2 questions in this word problem In an article about investment growth, Money magazine reported that drug stocks show powerful long-term trends and offer investors unparalleled potential for strong and steady ...
September 22, 2009

math statistics/probability
Hello I am having trouble trying to figure out how to do the last 2 questions in this word problem In an article about investment growth, Money magazine reported that drug stocks show powerful long-term trends and offer investors unparalleled potential for strong and steady ...
September 22, 2009

Science
I'm not an expert nor a teacher but I'm a college student and I think the answers are 1. procedure 2. error
September 22, 2009

math statistics
Hello I am having trouble trying to figure out how to do this probability word problem: In an article about investment growth, Money magazine reported that drug stocks show powerful long-term trends and offer investors unparalleled potential for strong and steady gains. The ...
September 22, 2009

Technology
I need help with my entry essay, "The Twentieth Century brought an explosion of discoveries and inventions in math, science, and technology. Choose one such discovery or invention, identify it, and name the people responsible. Then explain how this discovery or invention ...
September 19, 2009

1st. grade
well wut about tvs
September 17, 2009

Math
i dont really no actually
September 17, 2009

Math
that still does not explain how 2 simplify it
September 17, 2009

Math
wuts the simple form the expression 8x-2+5-5x-2+3? i hav been stuck on this question 4 a very long time and need some help
September 17, 2009

Citizenship
How is Fair-trade a citizenship activity? Is it active?
September 8, 2009

physics
An ostrich can run at speeds of up to 72 km/h. How long will it take an ostrich to run 1.5 km at this top speed?
September 7, 2009

physics
An ostrich can run at speeds of up to 72 km/h. How long will it take an ostrich to run 1.5 km at this top speed?
September 7, 2009

math
Express 2,750,389 in scientific notation
August 22, 2009

7th grade
can anyone help me with this question? (3y-2x)2 don't take the 2 a times 2. does anyone no the answer.
June 10, 2009

spanish
no problem
June 10, 2009

spanish
yeah i no
June 10, 2009

spanish
well don't u see that the question is saying to ask for something if u look carefully
June 10, 2009

spanish
i would think c would be the correct answer
June 10, 2009

spanish
are u sure about the answer 'cause im pretty sure it is incorrect
June 10, 2009

7th grade math
oh yeah sorry about that student was me until i changed the name.
June 10, 2009

7th grade math
what did u get as an answer?
June 10, 2009

7th grade math
Does anyone no what to do with this equation..... here it is..... 5x x 18.75=93.75 do u divide or do i multiply to get my answer.
June 10, 2009

Math
yeah ... thanks
June 10, 2009

heroes
the anwser to that would be DC(not the skateboarding company or washington dc)
June 10, 2009

Geometry
oh... wow, thx.
June 3, 2009

Geometry
E is the contact point. F and C are on the circle and 180 degrees from each other. Angle D is EDF. finally, I need the angle measure of Arc EF
June 3, 2009

Geometry
I have a circle with a Tangent line, DE, running along it and connecting with another line, FC, which runs through the center of the circle to the other side.I have connected the center of the circle with point E on the edge of the circle with a radius. I have labeled the ...
June 3, 2009

Geometry
I have a circle with a Tangent line, DE, running along it and connecting with another line, FC, which runs through the center of the circle to the other side.I have connected the center of the circle with point E on the edge of the circle with a radius. I have labeled the ...
June 3, 2009

Geometry
I have a circle with 2 lines that are connected and tangent to the circle. The lines are CA and CB angle ACB is 50 degrees. Arc AB inside of the tangent lines is X degrees find X
June 3, 2009

science
what is the chemical equation for electrolysis
May 31, 2009

Question
I'm from Tabetha's class, and wanted to look at her Jiskha message, but that didn't help. I tried searching for this, but it's too specific to find in a google search. Its something that requires a real, live human. Thanks for your understanding.
May 18, 2009

Algebra
Write a quadratic equation in the variable x having the given numbers as solutions. Type the equation in standard form ax^2+bx +c = 0 The solution is 6 only solution.
May 5, 2009

Physics
This is a basic question on motion. I must choose a procedure to test sideward motion and have no clue where to start. I am in 2nd grade so this test needs to be relatively simple. Thanks!
April 20, 2009

Ms. Office
Why are you wasting forums for garbage?
April 6, 2009

Physics
a = Δv/Δt = (vfinal - vinitial) / (tfinal - tinitial)
April 5, 2009

English
Rules of writing an essay?, And what are the main factors of an essay?, How to properly write an essay without an errors?
April 4, 2009

Math
f(x)= x2 (2=squared, how to graph this? how to solve this? f(x)= 3x-3 g(x)= 2x-5 f(4)=? f(5)=? g(3)=? g(4)=?
April 4, 2009

Trig/Math
To find an angle where you have the opposite and adjacent which formula do you use? Sine, Cosine, Tan? and how do you find the inverse?
April 4, 2009

Physics
wow, that was more elaborate than I thought it would be. Thank you so much for answering my qustion. :]
March 1, 2009

Physics - please help I don't get it
please I really need help with this
March 1, 2009

Physics
A daredevil attempts to swing from the roof of a 24m high bulding to the bottom of an identical building using a 24m rope. He starts from rest with the rope horizontal, but the rope will break if the tension force in it is twice the weight of the daredevil. How high is the ...
March 1, 2009

6th grade_Science/Math
ha ha ha funny josh
January 27, 2009

Calculus
Oh sorry, that was supposed to be pi
December 19, 2008

Calculus
Let f be the function given by f(t) = 2ðt + sin(2ðt) a) Find the value of t in the open interval (0,20 for which the line tangent at (t, f(t)) is parallel to the line through (0,0) and (2,4ð) b) Suppose the given function describes the position of a particle on the...
December 19, 2008

Accounting
buying packaging material, hiring shipping companies (those are a few of the costs)
December 19, 2008

4th grade
what is computation method?
November 25, 2008

Math - gr.11
Cos 30 = A/H Cos30 = A/5 *switch A and Cos30* A=5(Cos30) A=5•sqrt of 3 ------------- 2 *Remember, Cos30 is equal to A/H which is sqrt3/5
November 20, 2008

8th grade science
explain that gravitational force is the dominant force determining motions in the solar system and in particular keeps the planets in orbit around the sun
November 18, 2008

8th grade
In chemistry what is the practical applicaiton of scientific principles to solve everyday problems?
November 17, 2008

4th grade
what are 10 (things (living and non-living things)that a barracuda need to live a healthy life?
November 11, 2008

science
barracuddas are so able to to conform to their environment So i dont know how to answer the question. they need water food parisites and thats all i can get and i need 10 things.
November 11, 2008

science
barracuddas are so able to to conform to their environment So i dont know how to answer the question. they need water food parisites and thats all i can get and i need 10 things.
November 11, 2008

science
what are 10 (things (living and non-living things)that a barracuda need to live a healthy life?
November 11, 2008

Earth Science
i have a few questions 1)what california geologic features formed as the result of erosion by glaciers? 2)which geologic processes formed most of californias nonmetallic mineral resources? 3)an oil well is usually drilled into? 4)which of the following is NOT likely to be used...
October 30, 2008

Algebra II
I've been working on this one and I just can't figure it out. I appreciate all the help: Two miles upstream from his starting point, a canoeist passed a log floating in the river's current. After paddling upstream for one more hour, he paddled back and reached his ...
October 29, 2008

Life Science
I cant find the common names for these two words: protista and fungi - Can you help me?
October 28, 2008

science
6.3
August 31, 2008

Math
Number sense: What number is 10.000 less than 337.676 ?
August 28, 2008

science
a substance that keeps its shape because its particles can't flow freely is a(n).........
August 28, 2008

MATH
Matt and Anna are frequent fliers on Fast n Go Airplanes. They often fly between two cities that are a distance of 1680 miles apart. On one particular trip, they flew into the wind and the trip took 4 hours. the return trip with the wind behind them, only took about 3 hours. ...
May 27, 2008

math
Matt and Anna are frequent fliers on Fast n Go Airplanes. They often fly between two cities that are a distance of 1680 miles apart. On one particular trip, they flew into the wind and the trip took 4 hours. the return trip with the wind behind them, only took about 3 hours. ...
May 27, 2008

preschool
well could show the kid some dicipline to stop urinating all over the place.
May 26, 2008

math
A man drives x miles the first day, y miles the second day, and z miles the third day. The average mileage covered per day is
April 1, 2008

math
why do dragons sleep during the day
March 17, 2008

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