Tuesday

January 24, 2017
Total # Posts: 941

**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 that's 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*

**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*

**Algebra**

a) 1/6 b).17

*June 2, 2010*

**Algebra**

The hudson record store is having a going-out-of-buisness sale. CD's normally sell for $18.00. During the first week sale, all CD's will sell for $15.00. a. written as a fraction, what is the rate of the discount? b. what is this rate expressed as a percent? Round your...

*June 2, 2010*

**Math**

minus 2z on both sides 3z-43=80 then add 43 to each side 3z=123 then divide 123 by 3 and you get z=41

*June 2, 2010*

**german**

du hast durchfall??

*May 23, 2010*

**Algebra**

oh? so the answer is just n=6

*May 23, 2010*

**Algebra**

so the answer for 3 consecutive positive even integers such that the product of the second and third integers is 20 more than ten times the first integer........the answer is n=6 and n=-2

*May 23, 2010*

**Algebra**

thankx

*May 23, 2010*

**Algebra**

find three consecutive positive even integers such that the product of the second and third integers is twenty more than ten times the first integer. [only an algebraic solution can give full credit]

*May 23, 2010*

**English**

its really not good grammar ms. sue because you could use synonyms for the word a lot....you could used many or an extensive amount,,,but you really shouldn't use the word a lot...it just doesn't sound good

*May 23, 2010*

**English**

#1 should be He wants to take a lot of pictures of a baby. technically you shouldnt use the word a lot cuz its poor grammar

*May 23, 2010*

**English**

scared lonely

*May 23, 2010*

**Algebra**

4x^2-7x-2=0 (4x+1)(x-2) ssoooooo basically there are 2 answers for x......x=-1/4 or -.25 and.....x=2

*May 23, 2010*

**chemistry**

i got 8.3/299.15 = v2/311.15 but how do i get v2?

*May 17, 2010*

**chemistry**

If you have 8.3 liters of air in a balloon at room temperature (26°C) and heat the balloon to 38°C, what would the new volume be?

*May 17, 2010*

**Math**

Because he was examining train tracks.

*May 16, 2010*

**chemistry**

find the molarity of 9.0*10 (to the -4 power) moles of Mg(OH)2 in 1500 ml of water. what is the answer?

*May 6, 2010*

**chemistry**

find the molarity of 0.087 f of H2SO4 in 3.4 L of water? what is the answer

*May 6, 2010*

**chemistry**

17.9 moles of NaOH in 500 ml of water? please tell me the answer

*May 6, 2010*

**chemistry**

find the molarity of 35.8 g of HCl in 2.5 L of water???? what is the answer

*May 6, 2010*

**chemistry**

what mass of salt can be produced from the reaction of 3.45 grams of sodium hydroxide and an excess of hydrochloric acid?

*April 27, 2010*

**chemistry**

whats the answer

*April 25, 2010*

**chemistry**

what mass of salt can be produced from the reaction of 3.45 grams of sodium hydroxide and an excess of hydrochloric acid?

*April 25, 2010*

**Kindergarten Math**

How do I draw counters of 8 sandwiches

*April 19, 2010*

**religion**

what is a saying or a poem for dyer in the renassices

*April 19, 2010*

**science**

What made many scientists think the continents could not have changed position?

*April 13, 2010*

**Math**

the ratio of the corresponding side lengths of two triangles is 5 to 3. the perimeter of the larger triangle is 48m. What is the perimeter of the smaller triangle?

*April 9, 2010*

**U.S history**

what are 3 things that were or could of been, seen as "clouds in the blue skies of prosperity"?

*April 7, 2010*

**math**

What is the prime factorization of 48?

*March 29, 2010*

**Trigonometry**

2.424

*March 15, 2010*

**2nd grade**

2nd grade math measurement

*March 10, 2010*

**Language arts**

Thanks

*March 9, 2010*

**Language arts**

Ms Sue what were other choices that would fit?

*March 9, 2010*

**Language arts**

Thank you.

*March 9, 2010*

**Language arts**

No choice of words Trout or mouth? Shout communicates and you communicate with mouth.

*March 9, 2010*

**Language arts**

ship is to trip as shout is to ??

*March 9, 2010*

**Social Studies**

What!!!!

*February 10, 2010*

**8th grade**

Hey In Science were are learning about speed and motion and our teacher gave us the assignment to make a speed acrostic. Can I Get Some HELP?

*January 25, 2010*

**histirie**

what is jacques cartier mom name

*January 4, 2010*

**algebra**

D(g)=22g I need help on setting up a table value and graph it hel me please!!!

*January 2, 2010*

**chemistry**

I need help setting up this problem: A 5.0 sample of O2 is in a container at STP. What volume is the container and how many molecules of O2 in the container and how many atoms of oxygen?

*November 9, 2009*

**Science (7th Grade)**

My science teacher is really mean. And if I don't have the following questions done, I have a suspention! Please help!! 1) What discovery demonstrated that atoms are not the smallest particles? 2) Dalton did what to his theory that Democritus did not? 3) It is important ...

*November 3, 2009*

**Trig**

A billboard rests on top of a base. From a point level with the bottom of the base, the angle of elevation of the bottom of the billboard is 26 degrees and the top of the billboard is 31 degrees. From a point 21 meters further away, the angle of elevation to the top of the ...

*November 3, 2009*

**math**

10 ft being the long leg x being the short leg and y being the hypotenuse

*October 29, 2009*

**math**

People -19 Handshakes- 18 Total handshakes- 171

*October 26, 2009*

**12th grade**

Which of the following two groups did NOT do battle with the Romans?

*October 5, 2009*

**world history**

how do you compare north american and latin/carribean racial ideologies from 1500-1830?

*October 4, 2009*

**5th grade**

5,602-2,344

*September 29, 2009*

**4th grade**

how does geography impact people.

*September 23, 2009*