Wednesday

February 22, 2017
Total # Posts: 496

**chemistry**

The Haber process for ammonia synthesis is exothermic: N2(g) + 3H2(g) <==> 2NH3(g) ∆H° = -92 kJ If the equilibrium constant Kc for this process at 500.°C is 6.0 ξ 10-2, what is its value at 300.°C?

*March 8, 2012*

**math**

thank you miss sue

*March 4, 2012*

**math**

Emory is mounting 3 shelves of 12 3/4 in apart on a wall. If each board is 3/4 in. thick, what is the total vertical space occupied by the set of shelves?

*March 4, 2012*

**physics**

idk man

*February 16, 2012*

**math**

Two numbers have the sun or 100. Bothe numbers are divisble by 4 but not 5. Their quotient is also divisble by 4

*February 16, 2012*

**Social Studies**

How did the belief in Manifest Destiny influence western settlement

*February 5, 2012*

**Social Stuides**

DURING THE 1840'S MANY MORE AMERICANS THAN BRITISH SETTLED IN THE OREGON COUNTRY HOW DID THIS INFLUENCE THE NEGOTIATION OVER THE TERRITORY

*February 5, 2012*

**Chemistry**

The density of sulfuric acid is 1.82g/mL. What volume of sulfuric acid is needed to obtain 98.0g of sulfuric acid

*January 31, 2012*

**Quality management/performance improvement**

as a health information management coding supervisor, you have been asked to compare the steps of the current coding process with a proposed coding process. what would be the best tool to use for this process? a. Root-cause analysis b. scatter diagram c. flowchart

*January 19, 2012*

**physics**

a girl throws a stone vertically upward with an initial speed of 8 m/s. How high will the stone rise? How long will it take to return to the ground after it is thrown?

*January 18, 2012*

**physics**

A driver is moving at 32 m/s when they see a deer in the road standing 74m in front of them. They hit the brake and slow down at a constant rate of 9.5m/s2. Will the driver hit the deer? this is a 2 part problem

*January 18, 2012*

**physics**

A bullet penetrates 7 cm into a block of wood when fired at a speed of 33 m/s. Find the deceleration and the time taken to stop.

*January 18, 2012*

**algebra**

What is 34 divided by 25 in a lowest form

*January 11, 2012*

**algebra**

What is 34 divided by 24 in a lowest form

*January 11, 2012*

**Math**

The length of a rectangle is 3cm. If the length remains constant, and the width changes, what r the possible perimeters for the different rectangles?

*December 7, 2011*

**Intro.Criminal Justice**

which sentencing philosophy is best suited for cybercrimes

*December 6, 2011*

**org chem**

Using reagents no more than four carbons long, propose a synthesis of (1R,2S,4R,5S)-1,2,4,5-tetramethylcyclohexane and (1S,2R, 4R, 5S)-1,2,4,5-tetramethylcyclohexane. Would like a way to start this...

*December 2, 2011*

**Chemistry 1010**

Describe exactly how you would make 150.0g of a 4.00% (w/w) solution of NaBr in water ?

*December 1, 2011*

**government**

with the exception of Washington DC Only states get electoral vote equaling the number of Representative in congress. Tn has 9 Reps and two senators so 11 electors is given to Tn. Astronauts, military or any one else can vote absentee being citizens of a state.

*December 1, 2011*

**Algebra**

A person rolls two dice. What are the odds against throwing at most a six?

*November 16, 2011*

**Algebra**

How many three symbol codes using the digits 3 through 9 are possible if repetitions are allowed? (243 is an example of a three symbol code).

*November 15, 2011*

**math**

using these digits 1,9,3,6 Whatis the least 2-digit you can make? What is the greatest 2-digit you can make?

*November 2, 2011*

**stats**

Suppose we have a population of scores with a mean (μ) of 200 and a standard deviation (σ) of 10. Assume that the distribution is normal. Provide answers to the following questions: What score would cut off the top 5 percent of scores? What score would cut off the ...

*October 30, 2011*

**statistics**

Suppose we have a population of scores with a mean (μ) of 200 and a standard deviation (σ) of 10. Assume that the distribution is normal. Provide answers to the following questions: What score would cut off the top 5 percent of scores? What score would cut off the ...

*October 29, 2011*

**english**

In this sentence, what part of speech is the word Teresa's: Teresa's parents have formed a service organization for the community.

*October 25, 2011*

**algebra**

3 - 6/7 x = 21

*October 16, 2011*

**math 9th grade**

the length of a rectangle is 100 inches more than the width. if the perimeter of the rectangle is 1320 inches find the demensions

*October 9, 2011*

**math word problems**

Sally and marta had the same number of postcards. After sally sold 18 of her postcards, marta had 4 times as many postcards as sally. How many postcards did each girl have to begin with?

*October 2, 2011*

**Algebra**

Take west to be the positive direction. The height of a sloped roof above the place where I stand is h = 18 feet (see the figure below). If I move x = 5 feet west, the height is 10 feet. What is the slope?

*October 1, 2011*

**math**

Hannah and francine have $120. Hannah and peter have $230. Peter has 6 times as much money as francine. How much money does hannah have?

*September 30, 2011*

**Grammar**

Thx, Sue!!! Can u please help me with these others. Agreement errors: 1) Verb tense error 2) subject verb error 3) pronoun agreement error 4) modifer placement error 5) parallel structure error Q:The patient is thin, combative, uncooperative, oriented only to person, and ...

*September 23, 2011*

**Grammar**

what is the agreement error in the following sentence: One of the options concerning his future surgeries were discussed with him.

*September 23, 2011*

**Chemistry**

What are the products for the reaction of Sodium hydrogen phosphate with nickel II nitrate Ni2HPO4 + Ni(NO3)2 -->

*September 20, 2011*

**math**

given the linear equation y=-4/3x+1, find the y-coordinates of the point(-6<), (-3,)and (6,) these are the kind of problems that make me get confused

*August 22, 2011*

**math**

i come up with 50 miles , am i correct?

*August 11, 2011*

**math**

allowing $150 for office move. Rental truck is $70 and $1.60 a mile. how many miles can be driven, and not go over budget

*August 11, 2011*

**chemistry**

Which one of the following will have the greatest number of moles of potassium ion: 10.0 mL of .10 M potassium hydroxide, 30.0 mL of 0.15 M potassium carbonate, or 25.0 mL of 0.080 M potassium phosphate

*July 31, 2011*

**Chemistry**

determine the number of grams of KCl salt contained in 1.25L of a 5.00%(W/V) KCl(aq)

*July 18, 2011*

**ochemistry**

How many pi-electrons are in the thiazoline ring of thiamine hydrochloride? of thiamine?

*July 5, 2011*

**ochemistry**

Why might the presence of Benzoic acid be deleterious to the Benzoin condensation?

*July 5, 2011*

**Physics**

An aluminum cube that has an edge length of 7 cm. is placed in a beaker of water that is filled to the brim. As a result the water overflows. what volume of water overflows when the aluminum cube is submerged in the water?

*July 3, 2011*

**geometry**

Given the following sets, select the statement below that is NOT true. A = {b, l, a, z, e, r}, B = {b, a, l, e}, C = {a, b, l, e}, D = {l, a, b}, E = {a, b, l} (Points : 2) E ⊂ C C ⊆ B D ⊆ C B ⊆ C C ⊆ D

*June 27, 2011*

**algebra**

I need to simplify (6x^2y^3)(9x^2y^3)/3x^2y^2. I don't know whether I'm supposed to multiply or divide or both?

*June 9, 2011*

**algebra**

write slope intercept equation for the line containing the given pairs of points (-3.4) and (3,1)

*June 8, 2011*

**child care**

nutrition

*June 8, 2011*

**algebra**

y=2x-1 y=3x-2

*June 4, 2011*

**algebra**

A home's backyard drops 9 ft over a horizontal distance of 124 feet. Find the slope of this back yard. Round your answer to two demical places

*June 3, 2011*

**Algebra 2**

The speed of the current is 5m/h. Angie goes upstream 25 miles and returns to the doc. The whole trip takes 12 hours. What is the speed of the boat in still water?

*May 11, 2011*

**biology**

a a a a a a a

*May 8, 2011*

**Math**

1/(1+(1/2+1/2)^6*(2)^3)is

*April 29, 2011*

**math**

factor completely 7y^2+22y+3

*April 26, 2011*

**math**

factoring to solve quadratic equation 5x^2=16x+45

*April 26, 2011*

**math**

Thanks for the answer Reiny, could you explain the way you solved the factor of 21y^2+38+5

*April 26, 2011*

**math**

factory completely 21y^2+38+5

*April 26, 2011*

**Chemistry**

1.69 L of an aqueous solution containing 25.00 g of KCl dissolved in pure water is prepared. What is the molarity of the solution?

*April 22, 2011*

**Algebra**

Is y=3x+67 a linear equation?

*April 19, 2011*

**Math**

What is the product of 11/15 and 12/7?

*April 13, 2011*

**math**

express 55 minutes as a fraction of 1 1/3

*April 13, 2011*

**Math**

Repeated sample of 36 are drawn from a population with mean 52 and standard deviation 18. What is the standard deviation of the distribution of the sample means?

*March 28, 2011*

**Intermediate Accounting**

E6-10 Assume that Serena Williams desires to accumulate $1 million in 15 years using her market fund balance of $182,696. At what interest rate must Serena's investment compound annually? I came up with 12,179.733 per year; but know this is incorrect.

*January 30, 2011*

**Intermediate Accounting**

E6-5 Mike Finley wishes to become a millionaire. His money market fund has a balance of $92,296 and has a guarateed interest rate of 10%. How many years must Mike leave that balance in the fund in order to get his disired $1,000,000? I am getting $9,229.60 and know this is not...

*January 30, 2011*

**Math**

What is the answer X over negative 3 plus 10>7

*January 28, 2011*

**math**

How do I create a game with a 55percent chance of winning for Gr12 data management

*January 26, 2011*

**psy 202**

examples of how one domain impacts the other two in adult development

*January 5, 2011*

**Phy202**

what are some examples of how one domain impacts the other two in adult development?

*January 5, 2011*

**Chemistry Kb question need to clarify something**

-3.36(log button or 10^x button)= syntax error ??

*December 16, 2010*

**Chemistry Kb question need to clarify something**

the pKb for methylamine is 3.36, what is the Kb for methylamine? pKa+pKb= 14.00 Kb= 10^-pKb = 4.4x10^-4 is the answer but HOW?? what is punched into the calculator to get 4.4 x 10^-4??

*December 16, 2010*

**chemistry!**

determine the pH of the following mixture. 50.0 mL of 0.0260 M Benzoic acid and 0.626 g of sodium benzoate (assume the final volume is 50.0 mL) please explain the steps

*December 15, 2010*

**chemistry needs another look plz**

Posted by Lori on Tuesday, December 14, 2010 at 5:38pm. The mole fraction of an aqueous solution of potassium perchlorate is 0.125. Assuming that the density of this solution is 1.20g mL-1, calculate the following: (A) the mass percent of potassium perchlorate in the solution...

*December 14, 2010*

**Chem**

thank you but I got 4.00 and it's incorrect. 11.2LC8H16/22.4L=.5 1mol/.5=8mol/x .5*8=4

*December 14, 2010*

**Chem**

Given the reaction: C8H16 + 12O2 --> 8CO2 + 8H2O How many moles of H2O are produced when 11.2 liters of C8H16 gas, measured at STP, reacts completely?

*December 14, 2010*

**Chem**

What is the percent by mass of oxygen in Al2O3?

*December 14, 2010*

**Chemistry**

what distinguishes ionic from moolecular or atomic solids

*December 14, 2010*

**chem**

Ok I got (A) to work out for me 52.4% but i'm stuck on (B) moles= grams/molar mass 1.20g/138.547= 8.66x10^-3 ( this cant be right) then M = moles/L 8.66x10^-3/1.2x10^-3= 7.22 I got 7.22 but the right answer is 4.53M

*December 14, 2010*

**chem**

The mole fraction of an aqueous solution of potassium perchlorate is 0.125. Assuming that the density of this solution is 1.20g mL-1, calculate the following: (A) the mass percent of potassium perchlorate in the solution. (B) the molarity of potassium perchlorate in the ...

*December 14, 2010*

**chem**

25.0 mL of 0.125 M silver nitrate are mixed with 35.0mL of 0.100 M sodium sulfate to give solid silver sulfate. Write the net ionic equation, and determine the mass in grams of silver sulfate produced. I think the net ionic equation is 2Ag(aq) + SO4^-2(aq) ---> AgSO4(s) but...

*December 14, 2010*

**Probability**

How could picking three dates at random in the month of April be simulated using a random digit table? (Please show and explain)

*November 23, 2010*

**college algebra**

What is the fundamental theorem of algebra of this polynomial in completed factored form? and how do I graph it? f(x)=x^5-x^4+x^3-x^2+x-1

*November 15, 2010*

**college algebra**

What is the fundamental theorem of algebra of this polynomial in completed factored form? and how do I graph it? f(x)=x^5-x^4+x^3-x^2+x-1

*November 15, 2010*

**programing**

Hi Anthony, I have this same class with the same question. I'm not sure what you are asking here. You just stated the instructions.

*November 15, 2010*

**Health Care**

Do you think that there is a difference if an EMR system is put into a small facility or a big facility?

*November 3, 2010*

**Organic Chemistry**

If you don't neutralize the aqueous solution, then the acid crystals will not reform. The basic aqueous solution contains the conjugate base of the acid. you need to reprotonate this in order to get the crystals. Hope this helps...if you are in Thursday Lab at UCI with Kim...

*November 3, 2010*

**SCI230 UOP**

Also, remember to include each topic of your outline in your final paper. My professor required the bulleted format in my outline.

*November 1, 2010*

**statistics**

I have been working on this problem (and looking through my book and the internet) and could use direction. Info given: P(A or B)=.85 (A has line over it) P(A and B)= .41 (A has line over it) P(A or B)=.21 (A and B have line over it) Find P(A/B) (B has a line over it) I am not...

*October 27, 2010*

**Math**

Have to find the age of a family of 7. I'm told that the youngest child is 6, the oldest is 16 have a set of twins that are 15. The mean is 11 and the mean is 10. I added up all the numbers and got 73. Thought that if I added 4 I got 77 and then could get to the mean, but ...

*October 27, 2010*

**Stat**

Actually that is the question given to me (only that info). I used the formula for the confidence interval for a proportion where you have to find the sample proportion. I used both 1.65 and 1.645 but to no avail to get that answer.

*October 22, 2010*

**Stat**

For a sample of 200 patients diagnosed with allergies, 25 were men. What is the 90% confidence interval for the population proportion? I set this up and got the answer of .087 -.16. The book has .091-.17. Could use help---I must be missing something.

*October 22, 2010*

**english**

I get it...if I ask related what? doesn't make sense. Related who, doesn't make sense. Thanks

*October 18, 2010*

**english**

why is one not transitive? If I ask what is related I get wheat, barley, oats???

*October 18, 2010*

**english**

I think 1. is transitive 2. is transitive 3. transitive 4. transitive ?

*October 18, 2010*

**english**

In the sentences below, which are transitive or intransitve verbs? 1. It is related to wheat, oats and barley. 2. Their size might surprise you. 3. Some reach a height of 120 ft. 4. The stems measue a foot in diameter

*October 18, 2010*

**math**

A typical question found on psychology exams is answered by only by 22% of the respondents. Everyone else just leaves it blank. Estimate the probability that among the next 150 responses there will be at most 40 that answer it correctly. Incidentally, the question is "Why...

*October 10, 2010*

**statistics**

Women comprise 80.3% of all elementary school teachers. In a random sample of 300 elementary teachers, what is the probability that more the 3/4 are women?

*October 9, 2010*

**statistics**

Use of normal distribution to approximate the desired probability. Find the probability of getting at least 30 fives in 200 tosses of a fair 6 sided die.

*October 8, 2010*

**Statistics**

A multiple choice test consists of 60 questions. Each question has 4 possible answers of which one is correct. If all answers are random guesses, estimate the probability of getting at least 20% correct? Trouble with deciding p, n, q, and P (X)

*October 8, 2010*

**Statistics**

Hey--that is clever!! Thank you.

*October 3, 2010*

**Statistics**

In a given normal distribution, the standard deviation is 14.4 and 8.27% of the distribution lies to the left of 60. What is the mean?

*October 3, 2010*

**Statistics**

What z-value corresponds to the 18th percentile?

*October 3, 2010*

**Chemistry**

I am currently working on drawing isomers and find that I become way too creative in my structures. It would be helpful to know how many I should come up with... All isomers of C5H10O that contain a carbonyl group. I am looking for a number/count of them. Thanks is advance!

*September 28, 2010*

**Math**

Where do I inerst parenthesis to make the following statement true: 56 divided by 3 +4 x 1 + 2 =24

*September 27, 2010*