Saturday

February 28, 2015

February 28, 2015

Total # Posts: 2,561

**Chemistry**

A mixture of gasses 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?
*February 22, 2010*

**Chemistry **

A gas storage tank has a volume of 350,000 when the temperature is 27 degrees celcius and the pressure is 101 kPa. what is the new volume of the tank if the temperature drops -10 degrees celcius and the pressure drops to 95 kPa? please show work.
*February 22, 2010*

**Physics**

u r wight and ask ur teacher if u are confused it is the best way...
*February 22, 2010*

**Science**

You are 100% correct...I think...
*February 22, 2010*

**Chemistry**

A gas occupies a volume of 140 mL at 35 degrees celsius and 97 kPa. What is the volume of the gas at STP?
*February 22, 2010*

**Chemistry **

A 10 gram of mass of krypton occupies 15.0 L at a pressure of 210 kPa. What is the volume of the krypton when the pressure is increased to 790 kPa?
*February 22, 2010*

**College physIcs**

"You don't seem to be willing to take step one in answering these problems yourself. " What good is just knowing a formula?
*February 19, 2010*

**ethics 125**

· Consider the following statements: (a) Asian Americans and Pacific Islanders are a model minority, and (b) Asian Americans and Pacific Islanders belong to a single “Asian American” culture. If someone said one of these statements to you, how would you ...
*February 18, 2010*

**4th grade math**

I think Erik meant to say that Judy had 15, not 12. Then, it solves that 27+ (27-12)=42, right? My SIL just called asking us this same question...must be at the same place in the book!
*February 17, 2010*

**Chemistry**

4.76 kg
*February 17, 2010*

**spanish**

Choose the correct command form. No __________ uds.esos zapatos sucios en la casa! (llevar) A. llevan B. lleven C. lleve D. lleva
*February 17, 2010*

**chemistry **

If 2500 ml container is filled with 175 grams of argon at -48 degrees celsius, what is the pressure?
*February 16, 2010*

**chemistry 2**

Then your answer is B
*February 16, 2010*

**chemistry 2**

im confused i cant set this problem up correctly? I need a lot of help
*February 16, 2010*

**chemistry 2**

(2.0/0.5)=4
*February 16, 2010*

**chemistry 2**

A gas diffuses only 0.5 times as fast as an oxygen molecule at the same temperature. What is the molecular weight of the gas?
*February 16, 2010*

**Chemistry **

How do you convert from mass percentage to molality? I get 0.084 m but that is incorrect.
*February 15, 2010*

**chemistry**

how many grams of propane are in a 35L container at 40 degrees and 900 torr?
*February 14, 2010*

**chemistry**

how many grams of propane are in a 35L container at 40 degrees and 900 torr?
*February 14, 2010*

**physics**

fdfadf
*February 13, 2010*

**Physics **

a^2 + b^2 = c^2
*February 8, 2010*

**trig**

2sin(3x-3.14)-1 find the inverse form of this equation
*February 8, 2010*

**Algebra**

Can I simplify this further SQRT( 2 - SQRT(2) )
*February 8, 2010*

**math**

need help with this problem 9-10x2 divided by 5+7
*February 7, 2010*

**algebra**

what percent of 180 is 27?
*February 7, 2010*

**science**

two common ways in which a glacier can cause ersion?
*January 28, 2010*

**math**

The percentage of working mothers y can be modeled by the equation y=0.0102x + 0.644 where x is the number of years since 1990. In what year will 90% of mothers be in the labor force?
*January 28, 2010*

**3rd grade**

when i am rounded to the nearest ten, i am 30. The sum of my two digits is 5. What number am I?
*January 25, 2010*

**calculus**

I tried the integral from 1 to e of 1-lnx^2 but that doesn't work.
*January 25, 2010*

**calculus**

Find the volume if the area between the curve y=lnx, x=1, and y=1 is rotated about the x-axis.
*January 25, 2010*

**fifth frade fractions**

Two numbers have a product of 3 1/5 and a sum of 3 3/5. one of the numbers is a whole number. What are the numbers?
*January 25, 2010*

**algebra**

a)using intercepts, graph the three lines 4x + y - 8=0, 2x - y - 4=0, x + 2y - 16 = 0
*January 24, 2010*

**math**

Extremely large numbers, number of sand particles on the world, distance to the nearest star in KM's etc.
*January 21, 2010*

**Chemistry**

A 71.0 L cylinder containing CH2O at a pressure of 0.550 atm is connected by a valve to 1.50 L cylinder containing N2 at 266.0 torr pressure. Calculate the partial pressure (atm) of N2 when the valve is opened.
*January 20, 2010*

**AED 204**

i just want to know what to do? do u awnser it personally? Appendix D Educational Implications of Socioeconomic Status Matrix Directions: Based on your personal experiences and on the readings for this course, answer the questions in the green section of the matrix as they ...
*January 18, 2010*

**AED 204**

Who is most likely to be a part of this socioeconomic class? How do teacher expectations positively or negatively impact this socioeconomic class? How does tracking positively or negatively impact this socioeconomic class? How is financial support for schools serving this ...
*January 18, 2010*

**biology**

This qualitative study aimed at exploring whether students' successful use of analogy in learning curriculum complex science concepts was related: (a) to the level of their understanding of a specific analogy and (b) to their metacognitive awareness of how the analogy was ...
*January 18, 2010*

**spanish**

what does this mean__________ Que tienes en tu mochila?
*January 14, 2010*

**spanish**

what are you wearing
*January 14, 2010*

**Physics**

A mass m is hanging on a string that passes over a pulley and is then attached to another mass 3m that is resting on a horizontal table (along with the pulley). Neglect friction. Mass m is held montionless and is then released. When it has fallen a distance h, it will have a ...
*January 12, 2010*

**Math**

h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 6 3 1 6 6 6 2 2 you can post your response here please
*January 10, 2010*

**chemistry**

when there is 3.0 x 10^20 molecules in a closed container, the pressure is 1.2 atm. Using a pumper 1.5 x 10^20 more molecules are added to the container. what is the new pressure?
*January 10, 2010*

**Math**

like post here so that way i do not have to search for the old question
*January 10, 2010*

**Math**

h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 6 3 1 5 7 1 0 1 can you post response in this question thanks
*January 10, 2010*

**Algebra**

Can this be simplified or factored into a more simpler form??? (X^2 + X)/(X^2 + 3X) Thank You
*January 10, 2010*

**geo**

blank
*January 9, 2010*

**Plant Project**

Is the Spotted Chinese Evergreen plant a monocot or dicot? This project is due Friday. I've researched on it and have found nothing but how to take care of it. Please help if you have any information!
*January 5, 2010*

**english**

how do you translate my winter break in french?
*January 4, 2010*

**calculus**

write a power series for e to the 2x and find the interval of convergence
*January 3, 2010*

**english**

Which word do you use in the following sentence? and why? (every day or everyday) Karen waited for the school play.
*December 29, 2009*

**Physics**

3) Joe has a playing time of 74 minutes. When the music starts, the CD rotating at an angular speed of 480 revolutions per minute (rpm). At the end of the music, the CD is rotating at 210 rpm. Find the magnitude of the average angular acceleration of the CD (in rad/s^2)
*December 21, 2009*

**trig**

this is in 3 grade?
*December 17, 2009*

**Calculus**

I got the same answer for the first derivative but I am still messing something up for the second derivative. It is probably taking out the common factor. I'll check back later, got to go.
*December 15, 2009*

**Calculus**

Find y' and y'' y=X^3/(X^2-1)
*December 15, 2009*

**Unit rates**

Explain how you can use a unit rate to compare what store is a better buy.
*December 13, 2009*

**Math**

Find the line for the above data. X:5,5,7,8,9,11,12,12,14 Y:3,8,5,7,11,10,15,19,20
*December 12, 2009*

**New Testament Survey**

caesar agustus
*December 10, 2009*

**software**

what are some different elements in a internal proposal
*December 10, 2009*

**algabra**

Very Ruggedd
*December 9, 2009*

**6th grade Math**

the two numbers are 1.5 and 2.4 a+b=3.9 a-b=0.9 a=0.9-b subbing in the second formula into the first 0.9+b+b=3.9 2b=3.0 b=1.5 a+1.5=3.9 a=2.4
*December 8, 2009*

**MATH**

24 eggs * 3/4 = 24 *3 = 72 72/4 = 18 eggs broke 18/24 = 3/4
*December 8, 2009*

**Chemistry**

The Ph of the new acid/base is now "poo"
*December 7, 2009*

**physics**

please answer this one if you know it, im soooo bad at physics
*December 6, 2009*

**physics**

A rocket is fired upwards with 200.0 J of kinetic energy. How high does the rocket get at its highest point? Use the conservation formula.
*December 6, 2009*

**physics**

A batter hits a fly ball which leaves the bat 0.90 m above the ground at an angle of 61° with an initial speed of 29 m/s heading toward centerfield. Ignore air resistance. (a) How far from home plate would the ball land if not caught? (b) The ball is caught by the ...
*December 2, 2009*

**physics**

A swimmer is capable of swimming 0.45 m/s in still water. (a) If she aims her body directly across a 75 m-wide river whose current is 0.30 m/s, how far downstream (from a point opposite her starting point) will she land? (b) How long will it take her to reach the other side? ...
*December 2, 2009*

**Advance Biology**

What is attacted by herpes?
*December 1, 2009*

**Advance Biology**

I also think the number 9 is RNA.
*December 1, 2009*

**Advance Biology**

I think number 10 is covalent bonds and number 11 is hydrogen bonds.
*December 1, 2009*

**Advance Biology**

I have to find the correct term that best fits each definition. 1)The "transforming factor" that alters pneumonia bacteria 2)The three parts of every nucleotide 3)A pair of these forms a "rung" in the DNA ladder 4)Used to "label" DNA and protein ...
*December 1, 2009*

**Statistics**

A car manufacturer is interested in conducting a study to estimate the mean stopping distance for a new type of brakes when used in a car that is traveling at 60 miles per hour. These new brakes will be installed on cars of the same model and the stopping distance will be ...
*November 30, 2009*

**chemistry**

Nevermind, I figured it out. :)
*November 30, 2009*

**chemistry**

Calculate deltaG from deltaH and deltaS. Use the table of standard thermodynamic data. calculate deltaG at 0 degrees C for CH3CH2CH3 + 5O2 --> 3CO2 + H2O. CH3CH2CH3 + 5O2 --> 3CO2 + 4H2O I've balanced the equation so far, I know that deltaG = delatH - T(deltaS) but ...
*November 30, 2009*

**College Math**

Shakespeare is credited with writing 37 plays, of which 11 are tragedies, 16 are comedies and 10 are histories. Determine the number of different ways you could choose to read 3 tragedies and 2 comedies??
*November 28, 2009*

**Literature**

kr i want to do that bout no 1 wil. anyway 4 my homework i9 need 2 do dat oh nooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooolletme
*November 26, 2009*

**chemistry**

For the following: i) H3PO4 > H3AsO4 > H3SbO4 ii) H2Te > H2Se > H2S > H2O iii) HCl > HBr > HI iv) SbH3 > AsH3 > PH3 > NH3 The order of acidity is correct for which series? 1. ) all are correct 2. ) i and ii 3. )i, ii and iv 4. ) ii, iii 5. ii, iv...
*November 24, 2009*

**science**

Is oil nonmetallic
*November 23, 2009*

**science**

Is oil metallic
*November 22, 2009*

**science **

So Sue oil is not renewable
*November 22, 2009*

**science **

So is oil renewable or not
*November 22, 2009*

**science **

Is oil renewable?
*November 22, 2009*

**science**

Is oil nonrenewable?
*November 22, 2009*

**science**

Is oil inexhaustible?
*November 22, 2009*

**8th grade math**

24
*November 22, 2009*

**physics**

tried solving it got different final results
*November 20, 2009*

**math**

Need help with these problems please. I do not know how to break them down correctly. Thank you. 4x7+6-10 divided by 5 7-16x3 divided by 8+5 25 divided by 5x5+6-4
*November 20, 2009*

**Civics**

I have to give a description of the urban problems listed. Then, describe one way in which each problem can be solved. Housing and Economic Social Infrastructure and Transportation
*November 18, 2009*

**Civics**

I need help with finding the description and possible solution for the following: Housing and Economic Social Infrastructure and Transportation
*November 18, 2009*

**Civics**

I have to write a one page report describing the problems associated with urban sprawl. We are watching a video called Sprawling from Grace, which talks about America being so dependent on transportation. We have to use examples from the video as well as our own ideas. I need ...
*November 17, 2009*

**math **

how do you write .0125 as a fraction and mixed number in simplest form? Little confused.
*November 14, 2009*

**math**

How do you read .0125
*November 14, 2009*

**Physics**

A ball is hit over the fence at a 45 degree angle. The fence is 98 meters away. At what velocity does the ball leave the bat?
*November 12, 2009*

**Civics**

What is the relationship between a state and a municipality within that state?
*November 12, 2009*

**AP Us History**

true
*November 9, 2009*

**Advance Biology**

Compare mitosis and meiosis by completeing the chart. Mitosis- Meiosis-homologous chromosomes pair and then seperate Mitosis- Meiosis-needed for sexual reproduction
*November 9, 2009*

**9th grade- Algebra 1**

Arowofgirlslegs
*November 9, 2009*

**History**

Currently, Who is the USA president?
*November 8, 2009*

**Civics**

I don't understand this question. What kinds of policies do you think states may set with respect to school attendance and graduation requirements?
*November 5, 2009*

**Civics**

What legislative policy making role is a governor expected to fill? Would it be that the governor attends political-party dinners, speaks at party functions, and may campaign for party candidates in local elections.
*November 4, 2009*

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