Wednesday

December 2, 2015
Total # Posts: 547

**chemistry**

I am very confused about hybridization in general. Please give an explanation on how to do this. Which of the following pairs of atomic orbitals of adjacent nuclei can overlap to form a sigma bond? a pi bond? or no bond at all? a) 1s and 1s b) 1s and 2px c) 2px and 2py d) 3py ...
*January 8, 2011*

**chemistry**

freezin point of the solution 25.5g c7h11no7s in 1 x 100gh2O (nonionizing solute)
*January 6, 2011*

**math (combination)**

Hmm...the book says it's 252, which corresponds to (2C1)(9C4) or 252.
*December 30, 2010*

**math (combination)**

A woman has 11 close Friend. Find the number of ways she can invite 5 of them to dinner if a. but where 2 of the friends are married and will not attend seperately b. where 2 of the friend will not attend together the answer to a. 210 b. 252 Please explain....
*December 30, 2010*

**Math (combination/permutation)**

Let A denote one of the students. There are C(11,3) = 165 ways to choose 3 other students to be on the same tam as A. Now let B a student who is not on the same as A. Then let B be a studnt who is not on teh same team as A. There are C(7,3) = 35 ways to choose 3 from the ...
*December 30, 2010*

**Math (combination/permutation)**

Question 1: There are 12 students in a class. Find the number of ways that 12 studenets can take 3 different tests if 4 students are to take each test. Question 2 Find the number of ways 12 students can be partitioned into 3 teams A, B, C, so that each team contain 4 students...
*December 30, 2010*

**Math (combination/permutation)**

Question 1: There are 12 students in a class. Find the number of ways that 12 studenets can take 3 different tests if 4 students are to take each test. Question 2 Find the number of ways 12 students can be partitioned into 3 teams A, B, C, so that each team contain 4 students...
*December 30, 2010*

**SCI !!!!**

I love the poem! You did a great job!
*December 29, 2010*

**Chemistry**

A quantity of 0.020 mole of a gas initially at 0.050 L and 20 degrees Celsius undergoes a constant-temperature expansion until its volume is 0.59 L. Calculate the work done (in joules) by the the gas if it expands (b) pressure of 0.20 atm. (C) If gas in (b) is allowed to ...
*December 28, 2010*

**math**

the distance of D in feet it takes a car traveling at x mph to come to a full stop after hitting the brakes is given by d= 1.26x^2+ .075x. Est. the stopping distance for a car traveling at 40 mph
*December 17, 2010*

**ALGEBRA**

that is what I got
*December 13, 2010*

**ALGEBRA/please help**

-4(-25-(6)) -4 (-25-6) -4 (-31) 124
*December 13, 2010*

**math**

The volume of a ball is 288 pi cm^3. Find the dimensions of a rectangular box that is just large enough to hold the ball. use 3.14 for pie
*December 13, 2010*

**Chemistry**

The melting point of aspirin : 128-137Celsius degree. The melting point of the crude aspirin was measured to be 128 Celsius degree. What does it indicate about the purity of the product?
*December 5, 2010*

**Physics**

m*(L+Delta L)*w^2=k*(Delta L) Delta L=(m*w^2)/(k-m*w^2) Mass: 156 g=.156kg Answer: 0.128
*December 3, 2010*

**world history**

how did the Aztec and the Inca built their empires/
*December 1, 2010*

**calculus**

thank you
*November 23, 2010*

**calculus**

6.A manufacturer of DVD players has been selling 800 each week at 150$each. From a market survey it is discovered that for each $5 reduction in price, they will sell an extra 40DVD players each week. a)What is the demand function? b)How large a reduction in price (rebate) ...
*November 23, 2010*

**algebra 1**

8x-(2x+7)=23I am completely drawing a blank as to how I am suppose to solve this. Can someone offer the first step?
*November 16, 2010*

**algebra 1**

8x-(2x+7)=23
*November 16, 2010*

**Advanced accounting**

The balance sheets of Petrello Company and Sanchez Company as of January 1, 2011, are presented below. On that date, after an extended period of negotiation, the two companies agreed to merge. To effect the merger, Petrello Company is to exchange its unissued common stock for ...
*November 15, 2010*

**geometry**

The circumference of a circle is approximately 28.26 cm. Find its diameter and radius
*November 2, 2010*

**chemistry**

0.5123 g KHP sample was dissolved in about 25 mL of distilled water, and titrated to the phenolphthalein endpoint with 28.75 mL of a sodium hydroxide solution. Calculate the molar concentration of the hydroxide solution
*October 16, 2010*

**9th grade**

the shower is the story in line 1-4 the speaker usesa metaphor to compare the twilight to
*September 29, 2010*

**math word problems**

15 yards gained
*September 28, 2010*

**math geometry**

what is the area of a regular hexagon having sides of 16 meter length?
*September 28, 2010*

**math**

-3/5 =(9/35)so how would i get to coming up with the answer
*September 24, 2010*

**math**

7/9-(13/18)does it equally -1/18 or can you help me with this soultion
*September 24, 2010*

**math**

-3/5 =(9/35)=0.34285714 as a decmial and a fraction of -12/35 did i work this problem right
*September 24, 2010*

**math**

4-(-3)+1/2-2/(-2) am having trouble with this problem. I got a 8.5 decimal are a fration of 8 1/2 am I right? are how do i come up with the solution
*September 24, 2010*

**biology**

When considering the incresing complexity of atoms, molecules, cells, and tissues, you may notice that each step characteristics that were absent in the previous level. These characteristics, called emergent properties, demonstrate that the whole organism is more than the sum ...
*September 21, 2010*

**Business**

After more than 10 years of proposals, revisions, and re-revisions, the National Conference of Commissioners on Uniform State Laws (NCCUSL) at long last voted to adopt the Uniform Computer Information Transactions Act (UCITA) on July 29. Like its better known cousin, the ...
*September 19, 2010*

**ETH125**

Consider the differences between arabs, muslims, and arab muslim extremist and fundamentalist. What may be done to maintain the american guarantees of religious freedom and increase knowledge about muslims and arabs?
*August 15, 2010*

**Starting a day care center**

Thanks so I was on the right track.
*August 5, 2010*

**Starting a day care center**

How do you come up with the starting cost, plus a budget for a new Day Care Center. How do you come up with a estimate of the monthyly expense for one year. Including the lease of office space supplies and other expenses if you have not open up the doors yet. Can some one help...
*August 5, 2010*

**Math**

A tank in the shape of a cone has a diameter of 8 feet and a height of 10 feet.when there is water in the tank, th water is in the shape of a cone too. find the radius of the cone of water when the water is 2 feet high. Explain how you would solve it.
*August 3, 2010*

**english**

What are the nouns in this sentence? In 1999, John went to Disney World for vacation.
*August 2, 2010*

**chemistry**

Chlorine dioxide, ClO2, has been used as a disinfectant in air conditioning systems. It reacts with water according to the following equation. ... HCl If 142.0 g of ClO2 is mixed with 33.0 g of H2O, how many grams of which reactant remain if the reaction is complete?
*June 29, 2010*

**chemistry**

A particular coal contains 2.55% sulfur by mass. When the coal is burned, it produces SO2 emissions which combine with rainwater to produce sulfuric acid. Determine how much sulfuric acid (in metric tons) is produced by the combustion of 1.1 metric ton of this coal. (A metric ...
*June 23, 2010*

**com220**

I need help with com220 week5 a full-sentence outline
*June 7, 2010*

**com220**

I need help with my research paper. I do not know how to do a full sentence outline
*June 7, 2010*

**chemistry**

HF acid ionization constant (Ka) is 3.5 X 10-4. In a solution of HF acid @ equilibrium [H+] = 0.090 M. What is the concentration of F-?
*May 28, 2010*

**chemistry**

25.0g of 5.0% (by mass) acetic acid solution are titrated with 0.300 M NaOH. What volume of NaOH will be needed to neutralize this sample?
*May 28, 2010*

**chemistry**

If 24.7 of 0.250 M NaOH solution are needed to neutralize 19.8 mL of H2SO4 solution, what is the molarity of the H2SO4?
*May 28, 2010*

**auguta tech**

a. Percentage of scores less than 100=50 percent b. Relative frequency of scores less than 120= 0.34+0.135+0.0235+0.015+0.84 c. Percentage of scores less than 140 d. Percentage of scores less than 80 e. Relative frequency of scores less than 60 f. Percentage of scores greater ...
*April 17, 2010*

**auguta tech**

Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 68-95-99.7 rule to find the following quantities: a. Percentage of scores less than 100=50 percent b. Relative frequency of scores less than 120= 0.34+0.135+0....
*April 17, 2010*

**social studies**

in what ways does religon affect american society?
*April 15, 2010*

**economics in healthcare**

6. Calculate Herfindahl Index and Concentration Ratios for these markets. Drug Companies H.I. = ?, C.R. ? Health Care Providers: H.I.=? , C.R.= ? 2005 SOM 2005 SOM Drug Co1 18.8 HC Co 1 43.1 Drug Co2 17.9 HC Co 2 31.7 Drug Co3 15.3 HC Co 3 15.8 Drug Co 4 13.6 Drug Co 5 12.2 ...
*April 12, 2010*

**8th grade**

not that i know of, no
*April 8, 2010*

**math**

oh, yes now i get it
*April 7, 2010*

**English**

what about ummm... the enviroment? ha i hoped i helped:)
*April 7, 2010*

**Math**

Hi. what is 67/100 - 3/10?
*April 7, 2010*

**ALGEBRA**

A 5-mile cab ride costs $9.30. A 11-mile cab ride costs $17.70. Find a linear equation that models cost c as a function of distance d.
*March 31, 2010*

**Math**

A 3-mile cab ride cost $3.00. A 6-mile cab ride cost $4.80. Find a linear equation that models cost c as a function of distance d
*March 31, 2010*

**algebra**

help with week 8 word problems in mat116
*March 23, 2010*

**math**

I need help on turning around in a circle.
*March 23, 2010*

**algebra**

I need to find a solution by substitution method
*March 20, 2010*

**marketing 401**

this was the wrong question sorry.
*March 16, 2010*

**marketing 401**

Organizational Values 1. Mention an organization of your choice that displays excellent values, that orient it for growth. What do you see these values as being? How do they lead to a growth orientation? Think of any organization you want to for this discussion, from a small ...
*March 16, 2010*

**chemistry**

What is the volume occupied by 2.20 mol of argon at STP? Round to the nearest hundredth. Don't forget the units.
*March 9, 2010*

**health**

what is the prefix,added combine and suffix for Distally and Proximally?
*February 26, 2010*

**math**

the function with the sum of roots of 11 and product of roots is 11 is..? thanks for the help!
*January 31, 2010*

**math**

12cm/day=cm/h
*January 4, 2010*

**8th grade math**

i still need help on this problem ( 5x-2)-(6-2x)=-x-9+5x
*December 28, 2009*

**MATH**

thank you
*December 27, 2009*

**MATH**

For ms.sue when u did the problem 3(4-x)-22=x+48 u got the answer -14.5 if u try tocheck the answer it will be wrong i need help on these problems 3(4-x)-22=x+48 (x-3)-(2x+5)=2x-7-3x ( 5x-2)-(6-2x)=-x-9+5x
*December 27, 2009*

**math**

WELL IF U TRY TO CHECK IT. IT WONT BE RIGHT
*December 27, 2009*

**math**

(x-3)-(-2x+5)=2x-3x and (5x-2)-(6-2X=-x-9+5x
*December 27, 2009*

**8th grade**

how do you solve this 3(4-x)-22=x+48 solve for x please help me!!!!!
*December 27, 2009*

**math**

The sum of Lisa's and Jack's scores on there first algebra test is 6 less than twice Lisa's score. What is the lowest possible score jack could have earned on the test ?
*December 15, 2009*

**calculus**

Find the derivative. Could you please show me the steps? y = ãx(5-ãx)
*November 18, 2009*

**biology**

What follows is a hypothetical situation. Genes that produce chlorophyll in plants are inserted into the chromosomes of cattle. Indicate some of the possible advantages of this procedure. - I'm guessing mutation happens but I don't know what's the advantages to it ...
*October 22, 2009*

**9th grade**

What was the impact of John D. Rockefeller on American industry?
*October 19, 2009*

**math**

an open box contains 80cm^3 and is made from a square piece of tinplate with 3cm squares cut from each of its 4 corners. Find the dimensions of the original piece of tinplate.
*September 20, 2009*

**Essay writing**

what makes an authors argument compeling
*July 13, 2009*

**physics**

just a few quick communication questions... 1-is it possible to have total internal reflection for light incident from air onto water? why? 2-what is the angle of refraction when a light ray meets the boundary between two materials perpendicularly?
*June 17, 2009*

**physics**

You exert a force of 455N in pulling 15.0m of rope using a pulley system to lift a 935N object 5.0m. What is the efficiency of the pulley system? Please help, I appreciate it a lot.
*June 13, 2009*

**physics**

I've got a few communication questions... -Why do images appear sharper underwater when wearing a diving mask? -where would you aim a spear in order to hit a fish if you are viewing it from the air?(i know it's straight down, but why?) please answer.. if not all just ...
*June 4, 2009*

**physics**

calculate the image position and magnification for an object 3cm tall laced in front of mirror with a focal length of 12cm, if the object is placed at 2f... I got: di: 24cm and m=-1 please tell me if this is right.. thank you so much :)
*June 3, 2009*

**waves and sound**

1-A tunning fork has a frequency of 440Hz. The string of a violin and this tuning fork, when sounded together, produce a beat frequency of iHz. From these two pieces of information alone, is it possible to determine the exact frequency of the violin string?... I feel like this...
*May 17, 2009*

**Lanuage**

What is subject-verb or pronoun-antecedent for this sentence: Not one of our tomato plants are producing any fruit, but the greenbeans are thriving.
*May 17, 2009*

**Final Project**

Thank you I will check those out.i have went to the store, libraries .
*May 11, 2009*

**Final Project**

I need to find 4 children songs/lyrics in between the copyright date of 2004-2009. I have search the Internet 4 days and I have no luck.I need 2 Spanishand 2 English version. Can someone help me please. I need this today.I have to have the name of the song,publisher, city, ...
*May 11, 2009*

**physics**

the speed of a transverse wave on a string is 450m/s while the wavelength is 0.18m. The amplitude of the wave is 2.0mm. How much time is required for a particle of the string to move a total distance of 1.0km.... The thing that confuses me about this question is the amplitude ...
*May 6, 2009*

**physics**

i don't exactly understand what you are saying
*April 21, 2009*

**physics**

a bimetallic compound strip of brass and iron is 10cm long at 20C. When heated over a Bunsen burner flame the temperature of the brass rises to 800C and the iron to 750C. Calculate the difference in lengths of the iron and brass. (Ignore the bending effect)...please help
*April 21, 2009*

**Argument Validity**

Relax. The kid's been delivering the paper for, how long? Three, four years maybe? And not once has she missed us. The paper will be here, just wait and see. She's just been delayed for some reason
*April 15, 2009*

**physics**

by limb i mean a limb on a tree (srry about that).. and when i set Eg and Ek equal to each other i get 14m/s but the answer is 29m/s
*April 8, 2009*

**physics**

a bicyclist is coasting on level ground at 32.35m/s. The bicyclist coasts up an incline of 20.5m at a 30degree angle. How fast is the bicyclist traveling when he grabs the limb?
*April 8, 2009*

**Nutrition of the young child**

Thank you
*April 7, 2009*

**Nutrition of the young child**

Following the nutritional label on a jar of peanut butter, you determine that 1 once of the peanut butter contains 115 calories and 9 grams of fat. Whst percent of the calories come from fat. A.30 B.40 C.70 D.80 I chose C as my answer. Can someone check my answer.
*April 7, 2009*

**Nutrition of the young child**

Thanks
*April 5, 2009*

**Nutrition of the young child**

Which one of the following lunches provides in both color and texture? A.Egg salad sandwhich,applesauce,celery hearts,milk. B.Egg salad sandwhich,banana slices,buttered squash,milk. C.Egg salad sandwhich,raisins,wax beans,milk. D.Egg salad sandwhich,green grapes,raw carrots,...
*April 5, 2009*

**Health of young children**

Thank you
*April 5, 2009*

**Health of young children**

5.) A child in your program has just returned after having chickenpox. You notice that she still has a few dry scabs. What should you do? A. Send her home. She is still contagious. B. Welcome her back and let her know what there is to do today. C. Allow her to stay, but ...
*April 5, 2009*

**Nutrition of the young child**

thanks
*April 5, 2009*

**Nutrition of the young child**

Jamie loves all vegetables, all fresh and dried fruits, and milk. However,he refuses to eat dairy products and meats. Which of the following nutrients is he probably lacking? A.Iron B.Calcium C.Vitamin A D. Vitamin C I pick A as my answer Can someone check my answer.
*April 5, 2009*

**Nutrition of the young child**

okay thanks
*April 4, 2009*

**Nutrition of the young child**

Why shouldn't unmodified cow's milk be given to an infant under one year old? A.Infants are able to digest only breast milk. B.It contains too much bacteria for young babaies to handle. C.it can cause an upset stomach. D.Most infants are allergic to it. I chose B as my...
*April 4, 2009*

**Nutrition of the young child**

thanks
*April 2, 2009*