Friday

September 4, 2015
Total # Posts: 182

**Chemistry**

Prepare 250ml of 0.2M phosphate buffer of pH 6.4.starting from Na2HPO4,NaH2PO4,0.129N NaOH solution.
*July 10, 2015*

**algebra**

The atmospheric pressure P in pounds per square inch (psi) is given by P = 14.7 e−0.21 a where a is the altitude above sea level (in miles). If a city has an atmospheric pressure of 12.31 psi, what is its altitude? (Recall that 1 mi = 5,280 ft. Round your answer to the ...
*February 9, 2015*

**english**

a humbly request (from or by)rita in this sentence i use from or by plz tell me quick i have test in tution ???????
*November 17, 2014*

**Math-urgent-**

What's 11/12 divided by 3/4 in repeated subtraction?
*October 30, 2014*

**ap chem**

an unknown gaseous hydrocarbon reacts with oxygen to form CO2 and H2O, DETERMINE HEAT OF FORMATION FOR THE HYDROCARBON. the density of the mixture of CO2 and H2O at 1 atm and 200 degree celsius is 0.751g /L and heat of reaction is equal to -2044.5 KJ /MOL hydrocarbon
*October 11, 2014*

**Algebra**

Please Help Me with this problem:Ozark Furniture Company can obtain at most 3000 board feet of maple lumber for making its classic and modern maple rocking chairs. A classic maple rocker requires 15 board feet of maple, and a modern rocker requires 12 board feet of maple. ...
*September 29, 2014*

**statistics**

Suppose that the scores on a reading ability test are normally distributed with a mean of and a standard deviation of . What proportion of individuals score more than points on this test
*September 20, 2014*

**early childhood education**

PENN FOSTER exam 405559RR ANSWERS TO COMPARE MY ANSWERS TOO
*August 5, 2014*

**early childhood education**

exam 405559RR ANSWERS TO COMPARE MY ANSWERS TOO
*August 5, 2014*

**eCONIMIC**

2. The Theory of the Firm document, the Friedman article, and the information in chapter 4 argue that the main goal of a firm in a market economy is to maximize profit (shareholder wealth) over the long term. However, SEC regulations require U.S. corporations to publish ...
*July 24, 2014*

**math**

The sale force of a business consist of 10 men and 10 women A production unit of 6 people is set up at random what is the probability that it will consist of 4 men and 2 women
*July 3, 2014*

**Business Math**

yes
*April 14, 2014*

**Business Math**

Compute the simple interest. Assume 1 month to be of a year. Round your answer to the nearest cent. Principal Rate Time Interest $1,025 4.5% 16 months
*April 14, 2014*

**math**

Two of the sides of a right angled triangle are 5m nd 12m.find the length of the third side(there are two possible answers)
*January 6, 2014*

**Math**

Find the least common denominator for the following fractions: 3/4, 19/20, 1/6, 3/5, 8/15
*October 27, 2013*

**Discrete Mathematics**

Determine whether the given argument is valid: If Socrates was a philosopher, then he wasn’t a historian. Socrates was a historian. So Socrates was not a philosopher.
*September 22, 2013*

**math**

Define a variable and write an inequality for each of the following. A. When 3 times a number is decreased by 8, the result is at least 2 times the number. B. Ignatz, the Airedale, and Angus, the Scottie, collect bones. Ignatz has 5 more than Angus. They have at least 27 bones...
*July 15, 2013*

**math **

A. In 1 year Kristen will be four times as old as Danielle. Ten years from then Kristen will only be twice as old as Danielle. How old is Kristen now? B. The greater of two integers is 4 times the lesser. Of the lesser integer is increased by 12, the result is 3 less than the ...
*July 14, 2013*

**math**

1. The largest of five consecutive integers is twice the smallest. Find the smallest integer. 2. When the sum of three consecutive integers is divided by 9 the result is 7. Find the three integers. 3. If each of three consecutive integers is divided by 3, the sum of the ...
*July 14, 2013*

**sociology**

I was asked to explain using the feminism theory how facebook has made an impact on today's technologically advanced society in the apa format and I am lost I have not been in school for 30 years and decided to start again and I am so confuse
*July 11, 2013*

**sociology**

using feminism, show how Facebook has made an impact on today's technologically-advanced society.
*July 11, 2013*

**physics**

why weight of gold varies at 2 different places like panna and ladakh (physics)
*June 12, 2013*

**maths**

michael has 10 pairs of black socks,8 pairs of white socks&7 pairs of green socks everything is mixed in a drawer. as there is no light he is not able to identify the colour of the socks . how many of the socks will he have to take to match 1 pair
*June 12, 2013*

**statistics**

A sample of n = 7 scores has a mean of M = 5. After one new score is added to the sample, the new mean is found to be M = 6. What is the value of the new score? (Hint: Compare the values for ƩX before and after the score was added.
*June 9, 2013*

**statistics**

14) A population of N = 20 scores has a mean of µ = 15. One score in the population is changed from X = 8 to X =28. What is the value for the new population mean?
*June 8, 2013*

**physics**

i to found out the same but it says wrong
*June 2, 2013*

**physics**

A rectangular conducting homogeneous (which means the material is the same throughout) block has dimensions 1cm×2cm×3cm . A voltage V is applied between all opposite faces of the block and the corresponding currents were recorded. What is the maximum current ...
*March 22, 2013*

**maths**

a and b are positive numbers that satisfy the equation 1/a−1b=1/a+b. Determine the value of a^6/b^6+b^6/a^6.
*March 22, 2013*

**maths**

look at the ques carefully If sin^2∠A=ab its square there
*March 22, 2013*

**maths**

The angles in triangle ABC satisfy 6sin∠A=3√3sin∠B=2√2sin∠C. If sin^2∠A=ab, where a and b are coprime positive integers, what is the value of a+b?
*March 22, 2013*

**maths**

Let P=(p1,p2,…,p7) be a permutation of the integers 1,2,…7. For how many permutations P are all seven sums S1=p1,S2=p1+p2,…,S7=p1+p2+⋯+p7 not multiples of 3? Details and assumptions A permutation is a rearrangement of the entire set of objects.
*March 22, 2013*

**Physics**

How much work must be done on a 500-kg car to accelerate it from 29-km/hr to 112-km/hr?
*March 6, 2013*

**resume**

I am not a english speaker!!!!!!!! i am writing a resume is this statement correct: I am introducing my work: Student focus teaching professional with instructional experience and multicultural knowledge. Currently one of three teachers at Grovetown High School, Grovetown, ...
*February 23, 2013*

**english**

an interjection is always
*February 20, 2013*

**earth**

a suggestd answer to a question is a what
*February 6, 2013*

**Springfield**

Given the fact that there is no national religion in the United States, what application do the ethics of religious testaments have on the average American criminal justice practitioner?
*January 30, 2013*

**Physics**

A baseball whose mass is 0.25kg is struck by a bat. just before impact, the ball is traveling horizontally ay 40m/s to the left and it leaves the bat at an angle of 30 degrees above the horizontal with a speed of 60m/s. if the ball and bat were in contact for 0.05s, find the ...
*November 26, 2012*

**physics**

An airplane taxis onto the runway going at 10 m/s.if it can accelerate at 3.0 m/s square and its take-off speed is 90 m/s, what length of runway will it need?
*November 25, 2012*

**physics**

An airplane taxis onto the runway going at 10 m/s.if it can accelerate at 3.0 m/s square and its take-off speed is 90 m/s, what length of runway will it need?
*November 25, 2012*

**Chemistry**

Suppose you dissolve 10 grams of HCl gas in 250 ml of water initially at 25 C, what will the final temperature of the solution be?
*October 24, 2012*

**Math**

same divide :P
*October 9, 2012*

**Math**

Thank you Ms. Sue
*October 9, 2012*

**Math**

The area of Egypt is about 386,700 square miles. The area of Wyoming is about 97, 818 square miles. How many times larger is Egypt than Wyoming? Do I multiply, divide or add?
*October 9, 2012*

**algebra**

30*2=240 240/2=120 answer: 120
*September 1, 2012*

**algebra**

One side of a trianle is 2cm shorter than the base,x. The other side is 8cm longer than the base. What lenghts of the base will allow the perimeter of the trianlge to be at least 30cm
*September 1, 2012*

**Math**

2^z=1/16 find value of z
*August 22, 2012*

**geometery**

how long does a piece of wire need to measure to get 18" diameter?
*July 31, 2012*

**Calc**

How much money will we have in 6 months if we invest $1000 into an account earning 8% compounded continuously? How long will it take the $1000 to double? What is the effective rate for 8% compounded continuously that would produce the same accumulated amount after 1 year as 8...
*July 15, 2012*

**math**

lisa put one sheet each of blue, green, tan, white and gold paper into a printer. she forgot the order of the colors. what is the probability of lisa's printing on white paper?
*May 21, 2012*

**chemistry**

12.6g
*April 28, 2012*

**finite math**

what is the cost to install new carpet in an 15' by 21' room if the price of the carpet including installation is $14.50 a square yard?
*March 14, 2012*

**eng**

What is the pronoun in this sentence: Me Smith gave it one more try before giving up on the mower How does the noun function and what is the pronoun class?
*March 1, 2012*

**english**

I need help with my one paragraph (8 to 12 sentences in length) assignment. My biggest problem I believe is my topic sentence (which must be the first sentence of the paragraph). Also I need help with transitioning between one of my sentences. The following is the scenario ...
*February 28, 2012*

**Chemistry**

suppose you dissolve 10 grams of HCl gas in 250 ml of water initially at 25 C, what till the final temperature of the solution be?
*February 16, 2012*

**sTATISTICS**

You are estimating the contractor’s material handling cost as a factor of the material cost. After examining 6 previous contracts you have the percentage (factor) for each contract: 2.5% 6.2% 3.2% 12.9% 7.0% 15.3%
*February 8, 2012*

**algebra**

ceate a quadratic equation with the given solutions 8i and -9i
*January 3, 2012*

**penn foster**

which one is true? risk management is controlled and managed by HIPPA regulations risk management is unique to the health care industry. risk management is as spontaneous response to an unexpected incident. risk management is concerned with reducing exposure to legal liability.
*November 26, 2011*

**post**

retire in 30 yrs. annual deposits in ira to accumulate 450,000 in 30 years at 10% per year average what is the annual contribution?
*November 17, 2011*

**Macroeconomics**

According to Classical theory, what are the appropriate fiscal and monetary policies during a recession? According the Classical theorists, what should the government do to reduce unemployment?
*October 25, 2011*

**Macro-econiics**

If prices are flexible, what occurs when there is a surplus of widgets? If prices are flexible, what occurs if there is a shortage of trinkets?
*October 25, 2011*

**Math**

X;9, 3, 7, 11, 6. Y;11, 2, 15, 4, 9. Whats the value. The strength. Direction and shared varience
*September 26, 2011*

**chem**

A solution prepared by dissolving 20.2 mL of CH3OH in 100mL of water @ 25 celcius. The final volume of the solution is 118 mL. Calculate the % by mass. density CH3OH[0.782g/mL], H20[1g/mL] @ room temp.
*July 22, 2011*

**math**

find the coordinates of the point where the tangent to the curve y=x^3 +x +2 at the point (1,4) meets the curve again. [ans:-2,-8] pls help me i dont understand the question....
*July 22, 2011*

**trig**

y=7sin20degrees/5
*June 27, 2011*

**Pre Calc**

the graph f(x)=cos x Which gives the graph of g(x)=-2cos[3(x+(pi/3))]-5 write the equation of g(x) in terms of f(x). Is the question basicly asking for me to do g(f(x))?
*June 12, 2011*

**Quick Math Question**

Those numbers are your mattress measurements. If you have a twin size bed, it means 35 inches wide by (x) 74 1/2 inches long.
*June 9, 2011*

**english**

what is a direct performative aspect? (as in poetry or drama)
*June 9, 2011*

**Math/Statistics**

As I understand it, the May 1 answer from Anonymous is talking about probability, not odds. The probability of winning is 15/270 which reduces to 1/18. The probability of losing is 255/270 which reduces to 17/18. Odds are wins to losses, 15:270 or 1 to 18. So the odds of ...
*May 1, 2011*

**Math/Statistics**

270:15 There must be 285 results, 15 that win, and 270 that lose.
*May 1, 2011*

**AP Chemistry**

write the keq expression for the following reaction and determine the value of the Keq at 25degree celcius: MnO2(s)+4H+(aq)<-->Mn2+(aq)+2H2O(l)+Cl2(g)
*April 24, 2011*

**math**

the pea data is;2,3,4,5,6 and the frequency is ; 7,9,5,3,1 find the mean, median, mode and midrange number of peas per pod
*April 7, 2011*

**math**

Some households were questioned about the numebr of can openers they possessed. The results are indicated in the frequency table shown below: # of openers; 0,1,2,3,4 and frequency;1,8,11,7,1 a. does this dtat appear to be skewed? explain b. How many housedholds were included ...
*April 6, 2011*

**statistics**

According to a study by Stat & Associates PseudoScientific Consulting, the time interval between Atlantic hurricane of category 4 has a mean of 456 days and a standard deviation of 123 days. Suppose that you observe a sample of five (5) time intervals between successive ...
*April 3, 2011*

**critical cognition**

help
*March 24, 2011*

**critical cognition**

The five criteria for a good scientific explanation. Relevant, Consistency,Simplicity,Falsifiability,and Predictive power
*March 24, 2011*

**critical cognition**

Can someone help me evaluate this hypotheses? Evaluate the following hypothese using the five criteria ( The Scientific Method ) for a good scientific explanation. If the hypothesis is inadequate, formulate a new hypotheses and discuss why it is better. A. People who consume ...
*March 24, 2011*

**critical thinking**

A paradigm shift brings a fresh way of looking at the world. Give an example from the field of medicine that shows how normal science has experienced a paradigm shift in the last 200 years. For example, at one time, physicians did not believe that germs lived on human hands. ...
*March 23, 2011*

**english**

Share your thoughts on the following statement about writing from William Strunk and E. B. White's little book The Elements of Style. Think of one or two ways the writing you have worked on and revised might be like a drawing or a piece of machinery as described here. ...
*March 7, 2011*

**critical thinking**

3. Definitions sometimes involve both denotative and connotative meanings. For example, the word talk might be defined with this denotative definition: “the verbal exchange of communication.” The associated meanings, or connotations, of talk might be negative if this...
*March 4, 2011*

**english**

thanks
*March 4, 2011*

**english**

would one of these work A Drug Called Charlie Sheen Betty White: “You’ve Had An Overdose Of Me Lately”
*March 4, 2011*

**english**

First you get to read something on the Internet or in your favorite magazine, and then write a summary of it. Choose any subject of interest to you personally (stamps, bees, security alarms, global warming, sports, etc.) and read about it (or listen to a podcast, or view a DVD...
*March 4, 2011*

**english**

thank you Ms. Sue
*March 2, 2011*

**english**

I was very stress around the end of August, we all were at work and a note was going around the line stating meeting at 10:00 O’clock. So now we all were wondering why we are having a meeting. Now it’s time for the meeting. And we all found out that the plant is ...
*March 2, 2011*

**english**

After reviewing the lecture and suggested readings for this week, you have probably picked up several useful tools for stress management. Not only can you use these tools to help you choose better ways to react to situations, but you can also help others by sharing positive ...
*March 2, 2011*

**english**

Betty White: “You’ve Had An Overdose Of Me Lately” Could you please help me how should I start it
*March 2, 2011*

**english**

I don't know how to start it
*March 2, 2011*

**english**

First you get to read something on the Internet or in your favorite magazine, and then write a summary of it. Choose any subject of interest to you personally (stamps, bees, security alarms, global warming, sports, etc.) and read about it (or listen to a podcast, or view a DVD...
*March 2, 2011*

**english**

Today is a good day
*March 2, 2011*

**english**

I don't have one
*March 2, 2011*

**english**

In the message portion of your Discussion post, start by writing one general sentence about a topic After your one general sentence, write three or four sentences that add specifics to your description
*March 2, 2011*

**foreign language**

I want to begin learning a third language simply because I will have something to do this summer.
*February 24, 2011*

**foreign language**

Hi there! I know two languages so far English and Russian. (I know the Russian language as well as I know English.) So, I was wondering about a third language to take at the college. I want to take a European language, but I cannot decide. Among my top choices are German, ...
*February 24, 2011*

**math**

Mrs. Rossi wrote the following clues for a mystery number. It is a 4-digit number. The tens are double the ones. The thousands are double the tens. The sum of the digits is 19.
*February 22, 2011*

**english**

from book george shooting an elephant what did the elephant symboilize?
*February 13, 2011*

**english **

from book geroge owell shooting an elephant since orwell quandary is largely his own fault, he is confessing his weakness. how does he enlist the readers sympathy?
*February 13, 2011*

**math**

Suppose that 28 crayons, of which four are red, are divided random among Jack, Marty, Sharon, and Martha (seven each). If Sharon has exactly one red crayon, what is the probability that Marty has the remaining 3?
*February 7, 2011*

**Chemistry**

For a molecule of fluorous acid, the atoms are arranged as HOFO. What is the formal charge on each of the atoms? Enter the formal charges in the same order as the atoms are listed. (I searched everything online to find the shape of HOFO but could not find it--(they are wrong...
*December 5, 2010*

**chemistry**

for which of the following liquids the molecular weight can be determined by the method dumas :glycerin - benzen -dichloromethane
*November 4, 2010*