Friday

April 29, 2016
Total # Posts: 892

**Chemistry**

human blood contains dissolved carbonc acid in equilibrium with carbon dioxide and water according to the reaction: h2CO3(aq)<-->CO2(aq)+H2O(l) explain why decreasing the concentration of Co2 will ultimately decrease the concentration of H2CO3.
*March 17, 2011*

**Math **

The Table shows some common scales used in a model railroading.For each scale,find the length of a model of an 82-foot long boxcar.Give the length of each model in inches. Scale Name/Scale N 1:160, S 1:64, O 1:48
*March 16, 2011*

**Math**

The scale 1 in 120ft was created a 169.3 tall model of Alaska's Mount McKinely.Estimate the height of Mount McKinley from the height of the model.
*March 16, 2011*

**Chemistry**

C5H12
*March 14, 2011*

**MATH HELPP!!**

FRANCIS PACKED A BAG FOR HER VACATION.SHE TOOK 4 T SHIRTS,2 SWEATERS, 3 PAIRS OF JEANS, HOW MANY COMBINATIONS OF 3 COULD SHE MAKE USING EACH ITEM ONCE.MAKE A TREE DIAGRAM ---->>> THNX!!
*March 10, 2011*

**mathh hellp me please**

write a algebraic expression representing 3 more than the quotient of 4 and a number,n
*March 6, 2011*

**mathh**

write an algebraic expression representing three less than half a number
*March 6, 2011*

**mathh**

write an algebraic expression representing three less than half a number
*March 6, 2011*

**mathh helpp**

kathy will babysit !@#$%^& ctas. she charges $75 for the week for supplies and $8 for each hour,h,she works. write an expression for the total amount kathy charges. -->> THNX!!!
*March 6, 2011*

**math**

al has 3 less than 4 times as many candy bars as neil,n. write an expression representing how many candy bars al has compared to neil --->>>> THNX!:))
*March 6, 2011*

**beginning/intermediate college algebra**

true or false:the graph of the equation 3x-5y=10 goes through (0,-2)
*March 4, 2011*

**Chemistry**

26
*February 24, 2011*

**Math**

Use the sum or difference identities to find the exact value of each trigonometric function. sec pi/12 Thanks :)
*February 17, 2011*

**math**

A gas tank is filled 3/4 if it holds 16 gallons how much gas still remains
*February 16, 2011*

**math**

32 38 44
*February 15, 2011*

**Shirley English**

What classifcation is this sentence My geandmother from Mempis is the best cook in the world
*February 9, 2011*

**math**

the capacity of a measuring pitcher is 96 fluid ounces.how many quarts can the pitcher hold?
*February 8, 2011*

**math**

if m<8=82degrees, then m<7=
*February 8, 2011*

**9th grade biology**

How can you tell, using a microscope, that an onion cell has depth?
*February 8, 2011*

**4th grade math**

no, 8 slices of apple and 24 orange slices 32 is the amount of slices you have in total
*February 7, 2011*

**maths**

If a farmer has 60 cows on his farm and 53 sheep then how many goats does he have?
*February 6, 2011*

**english**

Where does this semicolon go... All states have flags some are quite beautiful.
*January 24, 2011*

**3 G Math**

How do I answer this......Barry says 9x8x(any other number) will always be greater than the product of 2x9x4. Do you agree? Explain?
*January 13, 2011*

**3rd grade math**

How do I answer this......Barry says 9x8x(any other number) will always be greater than the product of 2x9x4. Do you agree? Explain?
*January 13, 2011*

**third grade math**

How do I answer this......Write three ways to find 3x2x4.
*January 13, 2011*

**3rd grade math**

Barry says 9x8x(any oter number) will always be greater tan te product of 2x9x4. Do you agree? Explain?
*January 13, 2011*

**science**

A student stands at the edge of a diving board that is 3 m high. The student's weight is 350 N. What is the student's gravitational potential energy relative to the surface of the water?
*January 11, 2011*

**3rd grade math**

how do i answer this question....how can you use the multiplication facts for 3 to help you find the multiplication facts for 9?
*January 11, 2011*

**4th grade math**

gina wrote that4/5 is greater than 0.75 .Is gina correct?explain why or why not
*January 10, 2011*

**Physics**

A 15.0 gram bullet strikes and becomes embedded in a 1.24 kg block of wood placed on a horizontal surface just in front of the gun. If the coefficient of kinetic friction between the block and the surface is 0.280, and the impact drives the block a distance of 11.0 m before it...
*January 5, 2011*

**6th grade**

What percent of the circles are not white 2/5
*December 21, 2010*

**math fractions**

7/16 5/8 3/4
*December 14, 2010*

**math 3rd grade**

Writing in math - How can multiples of 10 also be multiples of 5?
*December 14, 2010*

**3rd grade math II**

I need to write a sentence for the following Reasoning: How can counting by 10's help you multiply by 10's?
*December 14, 2010*

**3rd grade math**

The question reads: Reasoning: How can counting by 10's help you multiply by 10's?
*December 14, 2010*

**Math**

write a number pattern for 8 starfish each has 5 arms.
*December 13, 2010*

**geometry**

do the lenghts 11, 15, and 40 make a triangle?
*December 8, 2010*

**Geometry**

thankx reiny!
*December 7, 2010*

**Geometry**

In an equilateral triangle, what is the difference between the sum of the exterior angles and the sum of the interior angles?
*December 7, 2010*

**READING**

read 2 chapters a day and if youh get really into da book then u will prob' just keep readin' it anyways
*December 7, 2010*

**World History**

Buddhism
*December 5, 2010*

**World History**

The religion based on the teachings of Siddhartha Gautama is known as?
*December 5, 2010*

**world history**

How did movable type help the Chinese to record their knowledge in a permanent form?
*December 5, 2010*

**Chemistry**

Draw the resonance structures for SeS2 and SiS2. There are 2 for SeS2 and 3 for SiS2. I really need help with this. If it can be explain with words, since pictures would be hard. Thanks!
*December 1, 2010*

**physics**

in deep space a gun is fired; how much force will be required to keep the bullet going?
*November 29, 2010*

**algebra**

$7.80/hour = ______ cents/minute?
*November 28, 2010*

**algebra**

$7.80/hour = ______ cents/minute?
*November 28, 2010*

**8th grade science**

hdhiwhgiturioyigpo
*November 15, 2010*

**1st grade**

Your past must be bad because you are shearching for answers.
*November 8, 2010*

**college Chemistry**

It requires 945.0 kJ/mol to break N2 molecules into atoms. Calculate the maximum wavelength of light that will still break these molecules apart. I tried converting the energy to kj and using E=hc/wavelength but that didn't give me the right answer...
*November 4, 2010*

**college Chemistry**

it did work, thanks!
*November 4, 2010*

**college Chemistry**

It requires 945.0 kJ/mol to break N2 molecules into atoms. Calculate the maximum wavelength of light that will still break these molecules apart. I tried converting the energy to kj and using E=hc/wavelength but that didn't give me the right answer...
*November 4, 2010*

**math**

-7w+23=8w+1
*October 29, 2010*

**Chemistry - College**

The ionization energy of a certain element is 472 kJ/mol. However, when the atoms of this element are in the first excited state, the ionization energy is only 166 kJ/mol. Based on this information, calculate the wavelength of light emitted in a transition from the first ...
*October 26, 2010*

**Physics**

Ok thank you.
*October 26, 2010*

**Physics**

You are very slowly pushing up an incline with a calculator sitting on it. The coefficient of static friction is 0.7. At what angle θ will the calculator start sliding?
*October 26, 2010*

**Physics**

You are very slowly pushing up an incline with a calculator sitting on it. The coefficient of static friction is 0.7. At what angle θ will the calculator start sliding?
*October 26, 2010*

**Physics**

You are very slowly pushing up an incline with a calculator sitting on it. The coefficient of static friction is 0.7. At what angle θ will the calculator start sliding?
*October 26, 2010*

**College Chemistry**

Given that delta Hrxn for OH- ions is -229.6 kJ/mol, calculate the enthalpy of neutralization when I mole of a strong monoprotic acid (such as HCl) is titrated by 1 mole of a strong base (such as KOH) at 25-degrees C.
*October 26, 2010*

**English-Article on the Hunger Games**

you should put in that bella and edward are from the top selling twilight series, other than that i think that the artical is amazing
*October 24, 2010*

**social studies**

i need to draw a kid verson of a separatist
*October 21, 2010*

**chemistry**

An atom emits a photon of wavelength 1.08 meters. What is the energy change occurring in the atom due to this emission? (Planck's constant is 6.626 × 10-34 joule seconds, the speed of light is 2.998 × 108 m/s)
*October 21, 2010*

**math**

I have more ones than tens. The value of me tens digit is 80. What number am I?
*October 19, 2010*

**Physics**

A car (mass 880 kg) is traveling with a speed of 44 mi/h. A bug (mass 7.9 mg) is traveling in the opposite direction. What speed would the bug need in order to slow down the truck by one mile per hour in a big bug splash (i.e., final speed 43 mi/h)? I don't know how to ...
*October 17, 2010*

**finance**

Write a 200- to 300-word paper comparing long- and short-term financing. Describe situations in which each type of financing would be used. Post in your Assignment Section.
*October 16, 2010*

**Physics**

A car (mass 880 kg) is traveling with a speed of 44 mi/h. A bug (mass 7.9 mg) is traveling in the opposite direction. What speed would the bug need in order to slow down the truck by one mile per hour in a big bug splash (i.e., final speed 43 mi/h)?
*October 16, 2010*

**Physics**

A car (mass 880 kg) is traveling with a speed of 44 mi/h. A bug (mass 7.9 mg) is traveling in the opposite direction. What speed would the bug need in order to slow down the truck by one mile per hour in a big bug splash (i.e., final speed 43 mi/h)?
*October 16, 2010*

**Physics**

A car (mass 880 kg) is traveling with a speed of 44 mi/h. A bug (mass 7.9 mg) is traveling in the opposite direction. What speed would the bug need in order to slow down the truck by one mile per hour in a big bug splash (i.e., final speed 43 mi/h)?
*October 16, 2010*

**3rd grade**

140,000
*October 14, 2010*

**math**

2(b -3)+5=3(b-1)
*October 14, 2010*

**Science**

thank you...I hope people answer with good statements saying why need the most votes for science class. need as many as possible.
*October 14, 2010*

**college physics**

Okay thank you for your help.
*October 13, 2010*

**college physics**

Ohio State this is my first physics class I have ever taken.
*October 13, 2010*

**college physics**

So would it be 78*3.6
*October 13, 2010*

**college physics**

Arthur (mass 78 kg) and Violet (mass 31 kg) are trying to play on a seesaw. If Violet sits 3.6 m from the fulcrum, at what distance from the fulcrum should Arthur sit?
*October 13, 2010*

**physics**

F(new)=F(old)x Cos(angle)
*October 11, 2010*

**college**

Vocabulary analogies
*October 4, 2010*

**12th grade economics**

what does the process of specialization do for the economy?
*October 2, 2010*

**7th grade**

i need help with this problem -4p < 76 please help ASAP!
*September 29, 2010*

**Math**

So the answer is 1.2 million ? but thats also in the question.
*September 27, 2010*

**Math**

There are about 1.2 million people in the U.s who speak chinese. This is about 3 times the number of people who speak greek. How many people speak Greek?
*September 27, 2010*

**3rd grade**

How do we answer this question...the flower shop just received a shipment of 432 roses. they need to fill an order for 273 roses. use any method to estimate how many roses they will have left.
*September 23, 2010*

**algebra 1**

535
*September 21, 2010*

**3rd grade**

mary's birthday is between june 13 and june 23. the date of her birthday is not an even number. the sum of the digits is 3. when is mary's birthday?
*September 20, 2010*

**Algebra **

How do I solve this funtion: (2x-9)-(1-x)
*September 17, 2010*

**Algebra **

How do I solve this funtion: (2x-9)-(1-x)
*September 17, 2010*

**College Economics**

Hey can someone tell me how to graph this in excel please. Thanks. Produce a chart in Excel showing TC and TR with Q on the horizontal axis. Have Q go from 0 to 15,000 units. Produce a second chart showing MC and MR with Q again on the horizontal axis. Here is the problem for ...
*September 16, 2010*

**economics**

Hey can someone tell me how to graph this in excel please. Thanks. Produce a chart in Excel showing TC and TR with Q on the horizontal axis. Have Q go from 0 to 15,000 units. Produce a second chart showing MC and MR with Q again on the horizontal axis. Here is the problem for ...
*September 16, 2010*

**English**

How did Arthur Miller use the witch trials to represent the McCarthy witch hunt?
*September 13, 2010*

**3rd grade**

Explain how you would use a number line to round 148 to the nearest ten.
*September 13, 2010*

**chemistry**

What is the mass, in grams, of 3.57×10^−2 ?
*September 12, 2010*

**6th Grade Math**

what is the equivalt fraction to 9/12
*September 2, 2010*

**Chemistry**

A gas has a density of 1.25 g/L at STP. What is its molecular mass?
*September 2, 2010*

**math**

name each number in 2 different ways 67,000
*September 2, 2010*

**math/prealgebra**

what are the actual definitions to the word algebra itself? algebra? cubed? counter example? function table? function rule? can you help me find these definitions?
*August 20, 2010*

**4th grade**

writing in expandfed form when it comes to hundred thousands.
*August 10, 2010*

**statistic math**

it is known that 5% of all parts manufactured at Plant F are defective. If 30 part are randomly selected what is the probability that all 30 parts are not defective and what is the probability that at least one of the 30 parts is defective?
*July 22, 2010*

**Math**

Find the equation of a line with slope m = -3 that passes through the point(5, -7) A.y = -3x + 22 B.y = -3x - 22 C.y = -3x + 8 D.y = -3x -8
*July 7, 2010*

**HELP MATH**

Thank you so is the property Subtitution?
*July 7, 2010*

**HELP MATH**

What property is demonstrated by the following? y = 3x + 7 and x = 3 y = 3 • 3 + 7 A.reflexive property B.symmetry C.transitive property D.substitution
*July 7, 2010*