Sunday

September 25, 2016
Total # Posts: 1,555

**Chemistry**

Ammonia is produced when Nitrogen gas reacts with Hydrogen gas, as shown by the equation below: N2 + 3H2 --> 2NH3 If the percentage yield is 90%, what would be your experimental yield of NH3 if 145.8g of N2 react? 2) 2Mg + O2 --> 2MgO A) If 50g of Mg reacts with 50g of ...

*May 21, 2014*

**Chemistry**

Ammonia is produced when Nitrogen gas reacts with Hydrogen gas, as shown by the equation below: N2 + 3H2 --> 2NH3 If the percentage yield is 90%, what would be your experimental yield of NH3 if 145.8g of N2 react? 2) 2Mg + O2 --> 2MgO A) If 50g of Mg reacts with 50g of ...

*May 21, 2014*

**Math**

How ugh are monthly payments on 100000 for 36 mo, at 9% ?

*May 17, 2014*

**Statistics**

Thanks Kuai that really helped me out.

*May 7, 2014*

**Statistics**

I am not understanding how to set this up. I have n=30 SD=4 xbar=250 after that I am lost

*May 7, 2014*

**Statistics**

A survey of 250 lobster fisherman found that they catch an average of 32 pounds of lobster per day with a standard deviation of four pounds. If a random sample of 30 lobster fisherman is selected, what is the probability that their average catch is less than 31.5 pounds?

*May 7, 2014*

**Statistics**

I still am not sure how to proceed with this with the information you gave me. Confused on this one

*May 4, 2014*

**Statistics**

Reginald Brown an inspector from the department of weights and measures, weighs 15 eighteen-ounce cereal boxes of corn flakes. he finds their mean weight to be 17.78 ounces with a standard deviation of .4 ounces. are the cereal boxes lighter than they should be? let Alpha = .01

*May 4, 2014*

**statistics**

John Davis, a manager of a supermarket, wants to estimate the proportion of customers that will be using food stamps at his store. How large a sample is required to estimate the true proportion to within 3% with 98% confidence?

*May 4, 2014*

**Calculus Help Please Urgent!!!**

What were your bounds?

*May 1, 2014*

**math**

A clerk is packing cubes into a box each cube has edges of 6 inches the dimensions of the box are 15 inches by 30 i.ches by 18 inches find how many cubes will fit in the box ? I dont know how to solve and explain how i found my answer please

*April 29, 2014*

**Science**

60,000n

*April 29, 2014*

**Statistics**

Think you messed up z=(.526-.47)/sqrt.526*.474/500)it should be Z=(.526-.47)/(.47)(.53)/sqrt 500 = am I right Sir

*April 27, 2014*

**Statistics**

Health issues due to being overweight affect all age groups. of children and adolescents 6-11 years of age,18.8% are found to be overweight. A school district randomly sampled 130 in this age group and found that 20 were considered overweight. at Alpha =.05 is this less than ...

*April 27, 2014*

**Statistics**

Two groups of climbers (team A and Team B) attempt to climb Mount everest using different routes. The probability of Team A reaching the summit is .70, The probability of Team B reaching the summit is .85. A. Sue calculated the probability the both teams reach the top in the ...

*April 27, 2014*

**statistics**

Thank you so much Kuai. This helped me out

*April 27, 2014*

**statistics**

If 30% of people in an area are registered voters and 15 people are selected at random from the area: A. what is the probability that at most 3 out of the 15 people are registered voters? B. could we have used the normal approximation to the binomial in part b? Explain why or ...

*April 27, 2014*

**statistics**

A basketball scout randomly selected 144 players and timed how long each player took to perform a certain drill. The times in this sample were distributed with a mean of 8 minutes. The population standard deviation was known to be 3 minutes. A. find the critical value for a 95...

*April 27, 2014*

**Math**

That does not help calculate the standard of error.

*April 25, 2014*

**Math**

LongLast Inc. produces car batteries. The mean life of these batteries is 60 months. The distribution of the battery life closely follows the normal probability distribution with a standard deviation of 8 months. As part of its testing program, LongLast tests a sample of 25 ...

*April 25, 2014*

**Algebra**

Calculate 5670 + 3.5% = 198.45 $198.45 + 5670 = $5865.45 Hope this helps.

*April 25, 2014*

**statistics**

In which of the following situations would it not be appropriate to use a paired t-test to analyze the data? A. A marriage therapist believes that many couples have different perspectives regarding the state of their marriages, prior to the start of couples therapy. In order ...

*April 24, 2014*

**statistics**

The average age for licensed drivers in a county is µ= 42.6, σ= 12 and the distribution is approximately normal. A county police officer was interested in whether the average age of those receiving parking tickets in the county differed from that of the average age ...

*April 19, 2014*

**chemistry**

How many calories will 45 grams of water release when it changes fom 85c to 30c?

*April 17, 2014*

**Algebra**

x over 2x-5 - 5 over 6x-15

*April 12, 2014*

**Calculus Help**

I was just reading the last solution and I was wondering why he had the 1/3 before the pir^2h.

*April 7, 2014*

**Math **

Their are 18 green blocks in a bag.their are 3 white blocks for every 2green blocks.witch proportion can be used to find w,the total number of white blocks in the bag?

*April 7, 2014*

**Math help Please**

My willy bird is 6 inches and has a mass, M, of 2.1kg. During penetration, it reaches a force or 15.0 N with a coefficient of friction 0.75. Calculate its rotational velocity given no respect to time. How much work is done in a thirty second period?

*April 7, 2014*

**Economics**

Suppose Bill is on a low-carbohydrate diet. He can eat only three foods: Rice Krispies, cottage cheese, and popcorn. The marginal utilities for each food are tabulated below. Bill is allowed only 167 grams of carbohydrates daily. Rice Krispies, cottage cheese, and popcorn ...

*March 24, 2014*

**Physics**

Find the total change in the internal energy of a gas that is subjected to the following two-step process. In the first step the gas is made to go through isochoric heating until it gains 5363 J and its pressure is 2.92 105 Pa. In the second step it is subjected to isobaric ...

*March 24, 2014*

**Math**

Two angles are complementary. Twice one angle plus the other is 96. Find the measure of each angle.

*March 23, 2014*

**Science**

If the density of a steel hammer 7gm/cm on earth what would the density be on a spaceship?

*March 20, 2014*

**Science**

How many minutes are required for a radio signal to travel for Earth to a space station in Mars if the planet Mars is 7.83 x 10 to the 7th km from Earth?

*March 20, 2014*

**Physics**

A 11 kg box slides 4.2 m down a frictionless ramp and then collides with a spring whose spring constant is 250 N/m. What is the maximum compression of the spring? I got 1.35 m but it is incorrect. Any help would be great!

*March 19, 2014*

**math**

i put 4000.00 in savings. at end of 3 years the account earned 960.00 in simple interest at what simple interest rate did the account grow? please show me the work.

*March 14, 2014*

**ECE**

Flannel board stories encourage the language arts skill of __________ more than other skills. A. listening B. writing C. speaking D. reading

*March 12, 2014*

**Chemistry**

Potassium permanganate (KMnO4) solutions are used for the determination of iron in samples of unknown concentration. As a laboratory assistant, you are supposed to prepare 700. mL of a 0.200 M KMnO4 solution. What mass of KMnO4, in grams, do you need?

*March 9, 2014*

**Physics-Kinetic Energy**

Can someone help me solve this kinetic energy problem? A 2050 kg truck is traveling east through an intersection at 2.3 m/s when it is hit simultaneously from the side and the rear. (Some people have all the luck!) One car is a 1200 kg compact traveling north at 4.5 m/s. The ...

*March 9, 2014*

**Algebra**

What is the domain of this relation? Is it a function? {(2, 7), (0, 3), (-4, 3)} Select one: a. {7, 3}; yes b. {2, 0, -4}; no c. {7, 3}; no d. {2, 0, -4}; yes

*February 20, 2014*

**Algebra**

Determine which point, if any, is in the solution half-plane of the two variable inequality. 3x – 2y < 6 Select one: a. (4, 1) b. (-1, -5) c. (1, 0) d. (2, -2

*February 20, 2014*

**math**

an open rectagular box with length of 6 feet, width of 4 feet and height of 2.5 feet is to be painted on all exterior sides, including the bottom, with a special waterproof coating. Each gallon of this special coating covers 12 square feet of surface area and costs $36.00. The...

*February 18, 2014*

**english(check answers)**

C.

*February 4, 2014*

**english(check answers)**

which of these sentences shows correct comma usage? A.Yes i enjoy writing poetry in my spare time.(I PICK THIS) B.After,a while,i suppose,the boy became less scared of the new girl. C.By the end of the first stanza,i had guessed that the new kid was a girl.(I PICKED THIS) D....

*February 4, 2014*

**english(check answers)**

please check answers 7.which of these sentences shows correct comma usage? A.Yes i enjoy writing poetry in my spare time.(I PICK THIS) B.After,a while,i suppose,the boy became less scared of the new girl. C.By the end of the first stanza,i had guessed that the new kid was a ...

*February 4, 2014*

**english(2 Qs)**

please answer these 2 questions. please 7..which of these sentences shows correct comma usage? A.Yes i enjoy writing poetry in my spare time. B.After,a while,i suppose,the boy became less scared of the new girl. C.By the end of the first stanza,i had guessed that the new kid ...

*February 4, 2014*

**Social Studies (Ms. Sue)**

I only see one answer choice

*February 1, 2014*

**Math**

A carpenter has several boards of equal length. He cuts 3/5 of each board. After cutting the boards the carpenter notices that he has enough pieces left over to make up the same length as 4 of the original boards. How many boards did the carpenter start with?

*January 27, 2014*

**College Algebra**

A compound inequality uses one of the words and or or. Explain how you will determine whether to use the intersection or union when graphing the solution set

*January 25, 2014*

**math**

its about phones like att has a monthly fee of $39.99/mo and 450 anytime minutes which are included in the plan and any additional minutes are $0.45/min Sprint-has a monthly fee $34.99/mo and 450 anytime minutes which are included in the plan and any additional minutes are $0....

*December 31, 2013*

**Mth 209**

Choose the TRUE statement(s) about 2 . I) 2 is between 1 and 2 II) 2 is between 1.3 and 1.4 III) 2 is between 1.4 and 1.5

*December 16, 2013*

**college algebra**

A circular vent pipe with a diameter of 5.5 inches is place on a roof tht has a slope of 1/4. Find an equation of the ellipse that should be cut from the roof so that the pipe will fit. roound parameters to the nearest hundreth.

*December 10, 2013*

**College Algebra**

A circular vent pipe with a diameter of 5.5 inches is place on a roof tht has a slope of 1/4. Find an equation of the ellipse that should be cut from the roof so that the pipe will fit. roound parameters to the nearest hundreth.

*December 10, 2013*

**Math**

mark has 24 baseball cards .he says that 8/24 are pitchers,5/24 are catchers and the rest fielders.what fraction below represents the difference between the number of fielders and catchers

*December 9, 2013*

**Math**

Well, first you have to find out how many are fielders. If 8 are pitchers and 5 are catchers, then the rest are fielders. Simply subtract 8 and 5 from 24. Then you take that number and subtract 5 from it. (Since difference means to subtract. And you're looking for the ...

*December 9, 2013*

**combinatorical mathematics**

At Brilli's zoo, she is trying to train a monkey to learn how to count. The monkey is given a stack of cards, numbered 1 to 30, in some random order. The cards are laid out from left to right. Each time the monkey moves the card numbered i+1 to the immediate right of the ...

*December 9, 2013*

**algebra 1**

how you get the answer for c?

*December 1, 2013*

**algebra 1**

This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS).

*December 1, 2013*

**algebra 1**

Which is the equation of the line that contains the points (0,3) and (-2,4)?

*December 1, 2013*

**algebra 1**

Look at the pattern that follows. Which expression represents this pattern algebraically? 8, 17, 26, 35, 44, …

*November 27, 2013*

**algebra 2**

The Butler family drives home from a vacation. The table of values that follows shows the relationship between the number of gallons, g, of gasoline their car uses and the distance in miles, d, the car is from home: Gallons of Gasoline Used (g) Distance from Home (d) 1 144 2 ...

*November 26, 2013*

**algebra 1**

A manufacturer is cutting plastic sheets to make rectangles that are 11.125 inches by 7.625 inches. Each rectangle’s length and width must be within 0.005 inches. A. Plot the acceptable range of lengths on the number line that follows: B. Write an inequality to represent ...

*November 24, 2013*

**algebra 1**

thats what he had for an answer but he thinks a reasonable answer is w= -3 why though? and why is it incorrect?

*November 23, 2013*

**algebra 1**

for |4-3w|>8

*November 23, 2013*

**algebra 1**

This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS).

*November 23, 2013*

**Spanish **

Are my answers correct? If I am wrong please don't give me the answer. Just ask me to try again. My choice marked by *** 1. Yo ______ en Chile y él ______ en Argentina. ***estoy . . . está estamos . . . estoy está . . . está estoy . . . est&...

*November 14, 2013*

**science**

Any topic (writer's choice) Research paper Science 3 pages / 825 words Discipline: Science Type of service: Writing from scratch Format or citation style: APA

*November 5, 2013*

**medicine**

A physician performed an aspiration via thoracentesis on a patient in observation status in the hospital. The patient has advanced lung cancer with malignant pleural effusion. Later the same day, due to continued accumulation of fluid, the patient was returned to the procedure...

*November 5, 2013*

**Statistics**

A camera store sells 40 pairs of binoculars per week on average with a standard deviation of 6. What is the probability that the store will sell more than 52 pairs binoculars in any week?

*October 21, 2013*

**Math.. PLEASE HELP!! :(**

If I divided 1.23x10^-10 and 1.4x10^-8, would my answer be 0.88x10^-18?

*October 17, 2013*

**Math**

If I divided 1.23x10^-10 and 1.4x10^-8, would my answer be 0.88x10^-18?

*October 17, 2013*

**Science**

What condition is needed for an experiment to have useful data?

*October 17, 2013*

**Science**

What condition is needed for an experiment to have useful data?

*October 17, 2013*

**Science**

What condition is needed for an experiment to have useful data

*October 17, 2013*

**Can someone check these answer for me?**

Dont trust Nunyubuisness answer

*October 17, 2013*

**History**

Well say you were applying into a college but you had 15 choices to choice from. However, you had to limit the choices to 5 due to expenses and how far it was from home. So you apply into all 5 colleges and you only get into 1 of those 5 colleges. You go to the college but ...

*October 17, 2013*

**Science**

What condition is needed for an experiment to have useful data?

*October 17, 2013*

**Beginner French Work check**

Hello! Just wondering if someone could check my work as there were a few areas that i'm not completely confident about. Thank you so much! Complete the sentence with the correct form of the verb in the future. Elle ___sera venu_____ (venir) chez moi ce soir. Nous ...

*October 11, 2013*

**Intro to ethics 120**

he outlawing of slavery and extending voting rights to women seem to indicate that ethics can have beneficial results. Give an example from the past that indicates a similar result or a current social policy that might be regarded as wrong, which therefore needs to be changed...

*October 10, 2013*

**physics**

Consider an ideal spring that has an unstretched length l0 = 3.9 m. Assume the spring has a constant k = 20 N/m. Suppose the spring is attached to a mass m = 6 kg that lies on a horizontal frictionless surface. The spring-mass system is compressed a distance of x0 = 1.7 m from...

*October 10, 2013*

**biology**

D. control

*October 8, 2013*

**economics**

Speculate as to why price leadership is legal in the U.S. whereas price fixing is not?

*October 7, 2013*

**physic**

g-fjjsf

*September 29, 2013*

**French**

Thank you for the quick response! I have a PC with Windows. Also, i am having a hard time understanding what Direct and In Direct Pronouns i should use when they are in the same sentence. Elle demande le menu au serveur. Elle ___(1)___ ___(2)___ demande 1. le 2. lui Could you ...

*September 26, 2013*

**French**

Hello, I am taking a French course online and i just want someone to check some of my work from time to time to make sure i am doing it correctly and to give me any tips they may have. What i have copy and pasted below took me awhile to get so i just wanted a second opinion on...

*September 26, 2013*

**Quantum physics**

Anon, please help with 7 and 10

*September 8, 2013*

**Quantum physics**

Anon: 3rd choice foê Q3

*September 8, 2013*

**Quantum physics**

Someone know answers for 7th and 10th? Attempts are finishing :(

*September 8, 2013*

**AP Chemistry**

ayayayaaa

*September 7, 2013*

**Literature**

I'm not sure how to write it. I've learned about irony, foreshadowing, symbolism, etc.

*September 6, 2013*

**Literature**

HELP PLEASE!!! Can you state the aspect of style revealed in this quote so I can write a paper? "Clyde if I could only die. That would solve all this. And I have prayed and prayed that I would lately, yes I have. For life does not mean as much to me now as when I first ...

*September 6, 2013*

**literature**

HELP PLEASE!!! Can you state the aspect of style revealed in this quote so I can write a paper? "Clyde if I could only die. That would solve all this. And I have prayed and prayed that I would lately, yes I have. For life does not mean as much to me now as when I first ...

*September 6, 2013*

**English**

The flames slowly grow stronger. Is the word "stronger" used as an adverb modifying the verb "grow."

*September 3, 2013*

**English**

Except for a dog he is traveling completely alone. How many adverbs are there? I know "completely " is one . Does it modify is traveling?

*September 3, 2013*

**English**

In this sentence -- In this story, a nameless character goes outdoors on a terrible cold day in the Yukon. How many adverbs are there and what do they modify? Is it just "outdoors" and it modifies "goes"

*September 3, 2013*

**Literature**

I really need HELP!!! I need a quote for personal connection in American Tragedy by Theodore Dreiser and an explanation of the quote.

*August 31, 2013*

**Stats**

A study found that for adults the general self-efficacy scale mean score was 35 and standard deviation was 12. A group of clients (n=14) was measured for their general self-efficacy with the same measure and found having 40 with standard deviation of 20. A group of therapist ...

*August 17, 2013*

**programming Visual Command Prompt**

This is the question that I have to do can someone please help?! QUESTION 2 - MANDATORY The file savings.txt contains the names and savings of 3 Bank customers in the last four months. Month1 Month2 Month3 Month4 Dennis Daly 480 620 57 73 Brid Jones 82 61 550 65 Mary Henry 49 ...

*August 14, 2013*

**Psychology**

A!! thank you!

*July 26, 2013*

**Psychology**

Phyllis is anxious to ride the parachute drop at the park. Her friend, Betsy, feels faint at the thought and does not enjoy watching others ride. These different reactions demonstrate that _______________.
A. perception of stress varies among individuals&#...

*July 26, 2013*

**Psychology**

Ralph was the third child born to a family of seven. At times his mother confused his name with those of his five brothers. His was never the tallest, the strongest, the fastest, or the smartest in school. He was also too little to do something or too old to be "acting ...

*July 26, 2013*