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Posts by lori

Total # Posts: 500

science
Are there enough resources in the world for 8 or 10 billion people to live decent, secure, happy lives?

Math
A jar contains 6 red marbles and 10 blur marbles all of equal size. if Dominic were to randomly select 1 marble without replacement and then select another marble from the jar, what would be the probability of selecting 2 red marbles from the jar.

Management 330
Help with doing a powerpoint presentation with show the Four Functions or management with Ethics

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?

math
thank you miss sue

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?

physics
idk man

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

Social Studies
How did the belief in Manifest Destiny influence western settlement

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

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

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

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?

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

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.

algebra
What is 34 divided by 25 in a lowest form

algebra
What is 34 divided by 24 in a lowest form

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?

Intro.Criminal Justice
which sentencing philosophy is best suited for cybercrimes

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...

Chemistry 1010
Describe exactly how you would make 150.0g of a 4.00% (w/w) solution of NaBr in water ?

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.

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

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).

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?

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 ...

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 ...

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

algebra
3 - 6/7 x = 21

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

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?

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?

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?

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 ...

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

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

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

math
i come up with 50 miles , am i correct?

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

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

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

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

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

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?

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

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?

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

child care
nutrition

psychology
illusion is a visual illusion containing a horizontal line terminating in inward- or outward-pointing arrowheads

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

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

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?

biology
a a a a a a a

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

math
factor completely 7y^2+22y+3

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

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

math
factory completely 21y^2+38+5

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?

Algebra
Is y=3x+67 a linear equation?

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

math
express 55 minutes as a fraction of 1 1/3

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?

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.

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...

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

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

psy 202
examples of how one domain impacts the other two in adult development

Phy202
what are some examples of how one domain impacts the other two in adult development?

Chemistry Kb question need to clarify something
-3.36(log button or 10^x button)= syntax error ??

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??

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

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...

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

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?

Chem
What is the percent by mass of oxygen in Al2O3?

Chemistry
what distinguishes ionic from moolecular or atomic solids

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

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 ...

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...

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

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

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

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.

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

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...

SCI230 UOP
Also, remember to include each topic of your outline in your final paper. My professor required the bulleted format in my outline.

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...

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 ...

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.

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.

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

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

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

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

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...

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?

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.

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)

Statistics
Hey--that is clever!! Thank you.

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