Thursday

September 29, 2016
Total # Posts: 1,043

**chemistry**

Thank you very much ... extremely helpful and very generous of you to volunteer your time and knowledge for this project.

*October 16, 2010*

**chemistry**

also the hcl is liquid form.

*October 16, 2010*

**chemistry**

the solution is 31.45% by weight. I am trying to find out how much of the HCL i use as a base and how much water I need to add to make 500 ml or more at 0.10 m HCL

*October 16, 2010*

**chemistry**

I need 500 ml of 0.10 m HCL solution. I have a 3.785 liter container of HCL at 31.45% concentration. How do I acheive my objective?

*October 16, 2010*

**algebra**

GRAPH EACH EQUATION AND IDENIFY THE Y-INTERCEPT 6X-3Y=9 PLEASE SHOW STEPS IF POSSIBLE.

*October 13, 2010*

**Algebra II**

i am trying to post the table but its not posting correctly.

*October 13, 2010*

**Algebra II**

Hat size head circum head circum 7 3/8 23 1/5 59 ? 22 4/5 ?

*October 13, 2010*

**Algebra II**

Hat size are determined by the measuring the circumference of the head in either inches or centimeters. Use ratio and proportion to complete the following table. Hat size head circum head circum (~1/2 inch) (~centimeter) 7 3/8 23 1/5 59 ? 22 4/5 ? (For the first answer box ...

*October 13, 2010*

**Algebra**

x^2+6x-44/x+9 X squared plus six X minus 44 divided by X+9. Having a hard time with this problem. I need someone to help me step by step or give me some pointers please? Thank you.

*October 11, 2010*

**Chemistry**

In a car engine, gasoline (represented by C8H18) does not burn completely, and some CO forms along with CO2 and H2O. If 5 percent of the gasoline forms CO, A)What is the ratio of CO2 to CO molecules in the exhaust? B)What is the mass ratio of CO2 to CO? C)What percentage of ...

*October 11, 2010*

**Communication**

Résumés must be free from typos because employers: A will not hire anyone who cannot type. B assume that someone who is careless with a résumé would be careless on the job. C believe that typos are evidence of alcohol or substance abuse. D will ...

*October 10, 2010*

**Communication**

Which of the following sentences advocates an idea in a positive way? A "I can't see anyone buying the product at that price." B "The unit is way overpriced." C "Customers can get a better deal anywhere else." D "We can corner the market ...

*October 10, 2010*

**Communication**

In response to a compliment on his excellent oral presentation, a Japanese business executive replies, "No, it wasn't very good." Which of the following is the MOST likely explanation for this response? A He thought the person giving the compliment was his ...

*October 10, 2010*

**communication**

Thank you Ms Sue! :)

*October 10, 2010*

**communication**

I meant A sorry.

*October 10, 2010*

**communication**

Hmm. so the obvious answer would be B then?

*October 10, 2010*

**communication**

In order to appear more authoritative in a speaking situation, you should: A lower the pitch of your voice. B raise the pitch of your voice. C use a sing-song pattern. D avoid stressing syllables. I think it is B but I am not sure.

*October 10, 2010*

**Chemistry**

What is the number of grams of Hydrogen in 5.45 x 10^22 molecules NH3?

*October 9, 2010*

**communication**

Which of the following is NOT a question you need to answer to choose a persuasive strategy? A What do you want readers to do? B What points will the audience agree with? C How strong a case can you make? D What kind of persuasion does your organization value? I am completely ...

*October 7, 2010*

**communication**

You are writing to ask for money for a soup kitchen. Which of the following will BEST avoid having the letter look like a selfish plea for money? A Creating psychological description B Writing thank-you letters to donors C Asking for help at the kitchen and other forms of aid ...

*October 7, 2010*

**calculus**

SinØ = opp/hyp opp is x hyp is 10 SinØ = x/10 10SinØ = x Sin (π/3) = 1/2 10 * 1/2 = 5 Answer: 5 ft/rad

*October 7, 2010*

**math**

im not sure at this point

*October 6, 2010*

**math**

yes thats the way it wes worded

*October 6, 2010*

**math**

this all the info that was given.

*October 6, 2010*

**math**

A 270 in pipe is cut into twp pieces. One piece is twice eight time the length of the other. Find the lengths of the pieces.

*October 6, 2010*

**Organic Chem**

Your answer is correct.

*October 5, 2010*

**Geographyand socity**

I needed help with this too.. haha

*October 5, 2010*

**7th grade**

we need the answers

*September 29, 2010*

**Chem**

4NH3(g) + 3O2(g) -> 2N2 + 6H20, K=10^80 @ certain temp initially, all the reactants and products have concentrations equal to 12M. At equilibrium, what is the approximate concentration of ammonia?

*September 28, 2010*

**Chem**

4NH3(g) + 3O2(g) -> 2N2 + 6H20, K=10^80 @ certain temp initially, all the reactants and products have concentrations equal to 12M. At equilibrium, what is the approximate concentration of ammonia?

*September 28, 2010*

**Chem**

4NH3(g) + 3O2(g) -> 2N2 + 6H20, K=10^80 @ certain temp initially, all the reactants and products have concentrations equal to 12M. At equilibrium, what is the approximate concentration of ammonia?

*September 28, 2010*

**Chemistry**

A newly discovered giant planet has an aver- age radius 12 times that of the Earth and a mass 722 times that of the Earth. Calculate the ratio of the new planet’s den- sity to the Earth’s density.

*September 14, 2010*

**math **

x^6 + 5x^3 – 24) ÷ (x^3 – 3)

*September 12, 2010*

**Chemistry**

Can i please get a formula to calculate the concentration of an acid when it reacts with a standard solution? ( preferably 0.1 M NaOH and viniger )

*August 5, 2010*

**math**

The angle of depression of two points on opposite sides of a building are on the same horizontal level with the foot of the buiding are 58 and 49 respectively from the top of the building. If the building is 38m tall, calculate the distance between the points.

*July 15, 2010*

**Calculus II**

1) Compute the indefinite integral: integral 2x ln(x^2 - 8x + 18) dx 2) Note that x^4 + 1 = (x^4 + 2x^2 + 1) = (x^2 + 1)^2 - (sqrt2x)^2 ... use this trick to compute the following indefinite integral as an elementary function (with exact coefficients). integral 1 / (x^4 + 2x^2...

*June 13, 2010*

**Calculus**

If two people are taking a dog on a walk and have two leashes. One is at 18 degrees with a force of 23lbs and the other is at 15 degrees with 27lbs, how hard is the dog pulling if it holds them at a stand still?

*June 3, 2010*

**Algebra**

Would someone please verify my answer for the solution set of (x+20)(x -10)(x+11)>0, {x|(-20,-11)<x<(10,infinity sign)}

*May 30, 2010*

**Algebra**

Would someone please verify my answer for the solution set of (x+20)(x -10)(x+11)>0, {x|(-20,-11)<x<(10, ‡)}

*May 30, 2010*

**Algebra**

I posted this before but could not understand the answer. How do I write the solution set of: {x| } for (x+20)(x -10)(x+11)>0

*May 30, 2010*

**Algebra**

I really appreciate your help. I am still a little confused, when I add -36 +9 -99 I get 126. I don’t understand the -72.

*May 30, 2010*

**Algebra**

For w-4/w-9 – w+1/w+9 + w-99/w^2 – 81 = ,I get: 14w-126/w^2-81 or 14w-14/w^2-9. Would that be correct?

*May 30, 2010*

**Algebra**

Sorry, this is making me crazy. Thank you for pointing out my error. w-4/w-9 – w+1/w+9 + w-99/w^2 – 81 =

*May 30, 2010*

**Algebra**

Thank you for answering (x+20)(x -10)(x+11)>0. How do I write the solution set of {x| }

*May 30, 2010*

**Algebra**

Can anyone help with this last question? 8v/v^2-49 + v/v-7

*May 30, 2010*

**algebra**

I don’t really understand this and it is on a test; w-4/w-9 – w+1/w+9 + w-99/w^2 – 18 = Can anyone give me a hint...please

*May 29, 2010*

**algebra**

OK what you say make sense but I am unsure of the solution sets of {x| }

*May 29, 2010*

**algebra**

Can anyone please help with this inequality,(x+20)(x-10)(x+11)>0 The solution set is {x| }

*May 29, 2010*

**Math**

How do I do 6y/5x + 3y/10?

*May 24, 2010*

**Math**

What is 2x + 6y = 12? I need to find y, the slope, and the y-intercept. Please help!

*May 24, 2010*

**math**

Two fractions equivalent to 2/5: 4/10 and 6/15. Two fractions equivalent to 7/11: 14/22 and 21/33 Two fractions equivalent to 150/325: 300/650 and 450/975. To solve this I multiplied each fraction by a number (e.g. 2/2) For 2/5, I did 2/5 x 2/2 = 4/10. I hope I helped!

*May 24, 2010*

**english**

what are the adjectives in this sentence. it was a wild, dangerous ride down the rapids in an old canoe.

*May 18, 2010*

**4th grade**

That is not a sentence.

*May 16, 2010*

**algebra**

1. x2+5x+6 2. x2+7x+12

*May 7, 2010*

**math**

Nth expression for the following:6,11,17,24,32.....

*May 5, 2010*

**calculus**

Let g(x)= integraton (top 3x, bottom 2) e^t^4 dt. Find the value of g'(0).

*May 2, 2010*

**math**

Hi, this is a worksheet problem so i do not have the answer to it. It came with a pic though. Here is the link. Thanks. img121.imageshack.us/i/dsc01000vu.jpg/

*May 2, 2010*

**english**

extrapolated

*April 27, 2010*

**english**

after studying the clues, sherlock holmes _____________ that the butler had committed the murder. reconciled endeavored extrapolated aquiesced infused

*April 27, 2010*

**english**

1 A 2 E

*April 27, 2010*

**english**

1. B 2. C

*April 27, 2010*

**english**

1) lassitude 2) D

*April 27, 2010*

**english**

1) Due to the _____ of the fire, the residents of surrounding homes were evacuated. (A) magnitude (B) consensus (C) laaitude (D) deportment (E) simulation 2) Sophia lives a(an) _________nieghborhood; many people have a similar_________- (A) prosperous.....occupation (B) ...

*April 27, 2010*

**english**

thank you

*April 27, 2010*

**english**

The boys ____ climbingup the ______ cliff,but decided it was too dangerous. (A) asecended....lethal (B) contemplated....sinister (C) endured....mundane (D) simulated....dreary (E) declined....obscure

*April 27, 2010*

**Physics**

Yes, it will. use equation: minimum thickness= wavelength(nm)/(4*index of refraction) so for your example it would be t=600/(4*1.25) which comes to 120nm. for the second part, use eq. 2t= ((m*wavelength)/index of refraction) so again 2t=((1*600))/1.44) and t= 208.3nm

*April 22, 2010*

**science**

what is the oort and were is it located

*April 21, 2010*

**chemistry**

65.2g

*April 10, 2010*

**spanish**

Form complete sentence using the imperfect: Cada semana/yo/asistir a/escuela primaria

*April 8, 2010*

**MATH**

You shouldn't search help on PROMYs questions...

*April 2, 2010*

**6th grade Language Arts**

That's the word that I'm not allowed to use. So If I use compromise in the second blank, I don't know what to use in the first blank.

*March 30, 2010*

**6th grade Language Arts**

that's what I thought, but what about the first blank?

*March 30, 2010*

**6th grade Language Arts**

We had a great difference of _______, we finally came (together) on the (opinion) that something needed to change so we made a _______ that each person could live with. I need to fill in the blanks that mean the same as the words in parenthisis. This is a stem homework project...

*March 30, 2010*

**Math**

Bob and his dad visited the hardware store on Saturday. They observed the following transactions: Mr. Harris bought 4 for $0.50, Mrs. Clarke bought 21 for $1.00, Mr. Montaro bought 1,134 for $2.00, and Ms. Park bought 450 for $1.50. What were they buying?

*March 25, 2010*

**math**

2x^3(x^2+2x)^-1/2 -(x^2+2x)^1/2 / x^2 the whole numerator is over x^2

*March 22, 2010*

**Advice on IB subjects**

Hey there all! Im desperate for some advice on my subjects at IB! I have decided on chem bio higher and english spanish standard. I am battling between Maths and Economics higher! I really like Maths and had decided to take it but now that I told people my options everyones ...

*March 21, 2010*

**Algebra 1**

Dumb teacher Mrs sue has no life when will we ever use any of this $hît. But anyway the answer is; it is tacks free. No spaces.

*March 9, 2010*

**chemistry**

What is the pH of the solution that results from mixing the following four solutions together? (1) 150. mL of 0.250 M NaCl (2) 300. mL of 0.200 M HCl (3) 100. mL of 0.050 M HNO3 (4) 450. mL of 0.200 M NaOAc any help is greatly appreciated!

*March 7, 2010*

**chemistry**

What is the value of [HCO3- ]/PCO2 for someone with mild acidosis, with a blood pH of 7.30? 1. 0.038 2. 0.38 3. 0.030 4. 0.30 5. 3.0

*March 7, 2010*

**chemistry**

Thanks a lot!

*March 7, 2010*

**chemistry**

Which of the following mixtures will result in the formation of a buffer solution when dissolved in 1.00 L of water? i) 0.50 mol HClO2 and 0.25 mol HCl. ii) 0.50 mol HClO2 and 0.25 mol NaOH. iii) 0.50 mol NaClO2 and 0.50 mol HClO2. iv) 0.50 mol NaClO2 and 0.50 mol HCl.

*March 7, 2010*

**6th grade math**

Operations for 9/2m - 8 = -5.5 + 4m? Please help

*March 4, 2010*

**physics The range**

U2 Sin 2a = g =34.66m

*February 14, 2010*

**math**

i need help rounding numbers. for example, 34.566 to the nearest hundreds.

*February 3, 2010*

**algebra**

2x^2-8x-42 over 6x^2 divided by x^2-9 over x^2-3x

*January 28, 2010*

**math**

2xsquare- 8x - 42 over 6x square divided by x square - 9 over x square - 3 x

*January 28, 2010*

**math**

a movie theater charges $7 for an adult's ticket and $4 for a child's ticket. on a recent night the sale of child's tickets was three times the sale of adult's tickets. if the total anount collected for ticket sales was not more than $2,000, what is the ...

*January 28, 2010*

**math**

four times the larger number of two numbers is equal to seven times the smaller.the sum of the numbers is 22.find the numbers

*January 27, 2010*

**algebra**

a-13whena=13.so33-13=20 that's the ans 3x+2y-2zwhenx=5,y=2,z=1.so3(5)+2(2)-2(1)=17

*January 27, 2010*

**9th grade**

How do you factor this expression? 10x+15

*January 24, 2010*

**Calculus**

Prove that the average of LRAM and RRAM is equal to TAM.

*January 24, 2010*

**biology**

explain the role of antigens and antibodies in natural and artificial control of diseases

*January 23, 2010*

**social studies**

Where did the pickle first originate?

*January 20, 2010*

**Algebra**

x + square root of 5 / x - square root of 5

*January 18, 2010*

**accounting**

“When in need, Google!” has become the single solution for all and any problem under the sun. Your accounting homework problems are no exception to this. By the time you settle down in college after finding campus routes, remembering locker codes and making new ...

*January 14, 2010*

**9th grade**

s8impliy this exponential expression): -2 7 -8 ) 6 -9)8 (7) * (x) * (w * (x *(4) * -3) (w

*January 6, 2010*

**algebra**

How do you do standard form

*January 6, 2010*

**social studies**

the ottomans adopted a policy of religious tolerance.why did they follow this path?The golden Age of muslim.

*December 15, 2009*

**Physics**

A football player kicks a football with an initial velocity of 30m/s at an angle of 55 degrees relative to the flat ground. a)what is the speed of the football at its highest point b)find the highes point reached c)find the total time in the air d)how far is the football ...

*December 13, 2009*