Friday

July 25, 2014

July 25, 2014

Total # Posts: 347

**Chemistry**

How many moles of NF3 are in 850.49 grams of nitrogen triflouride

**Chemistry**

ok so C = 19x 12.01 = 228.19 H = 97 x 1.001 = 97.097 Cl = 35 x 35.45 = 1240.75 =1566.037 g/mol is this look ok

**Physics**

A motorcycle with an initial velocity of 7.99x10^0 m/s accelerates for a total of 3.3x10^0 seconds at a rate of 1.51x10^0 m/s2. What is it's velocity, to two significant figures? can anyone show the calculations for this

**Physics**

For a standard production car, the record for road test acceleration goes to the 1993 Ford RS200 Evolution. This car went from 0 to 2.911x10^1 m/s in 3.279x10^0 seconds. What is the average acceleration, expressed to 3 significant figures?

**AP Chem**

A student chemist named Hannah Montana set up an electrical conductivity tester similar to that shown on page 141 and conducted an experiment involving two clear, colorless liquids, identified as solution A and solution B. Solution A and Solution B are both 0.050 M. The experi...

**Geography**

How do the shores of Long Island differ from each other. The South Shore and he North Shore

**social studies**

does anyone know the 4 prehistoric indian groups that lived in indiana?

**math**

This is dylan i am just learning square root i need this awnser for my homework which is do tommorow so please write the awnser back to me thanx every1 and please check your awnser before ypu post it.Thanx Every1.

**math**

Each ostrich needs a pen about 20 feet by 10 feet.How many square feet of space will be needed by 11 ostriches.

**5th grade math**

In the zoo there is penguins and polar bears 120 people visted both of them but only 75 people to photograghs how many people bought souvenior photographs please multiply

**geography**

What does Pig ears stand for?

**geometry**

X would be 17.5, as long as the answer isn't required to be a whole number.

**physics**

need answer fast- running out of time

**physics**

A truck is stopped at a stoplight. When the light turns green, it accelerates at 2.7 m/s2. At the same instant, a car passes the truck going 18 m/s. Where and when does the truck catch up with the car?

**Science**

The portion of the nervous system that controls involuntary activities is a subdivision of the ____ nervous system. A. sympathetic B. central C. peripheral D. parasympathetic I think it's either B or C right?

**Science**

What process describes how a signal travels from one end of a neuron to the other end? A. Hormonal regulation B. Muscle coordination C. Membrane excitability D. Neurotransmitter release I'm pretty sure the answer is C but just want to be positive.

**medicine**

A patient was experiencing indigestion almost every day. The physician performed an upper GI series, also known as a ____ test. a) bronchographic b) barium enema c) cholangiographic d) barium swallow I've been searching for hours and cant find the answer. Please help!!!

**How Children learn**

19. C 20. A

**math HELP **

ur such a homo. oh and your mom wanted to join

**math HELP **

why dont u want to join

**8th grade**

thanks wanna join

**8th grade**

what is a historical fact about independent and dependent events. im having so much trouble finding this answer on the enternet. HELP! thanks

**trigonometric**

ya drwls is right haha

**math #2**

Look at the pattern of shaded numbers. use place value to describe how the number change. 501 is shaded,502,503,504,505,506,507,508,509,510,511,512,513 is shaded,514,515,516,517,518,519,520,521,522,523,524,525 is shaded,526,527,528,529,530,531,532,533,534,535,536,537 is shaded...

**math**

Look at the pattern of shaded numbers. use place value to describe how the number change. 501,502,503,504,505,506,507,508,509 is shaded,510,511,512,513,514,515,516,517 is shaded, 518,519,520,521,523,524,525 is shaded,526,527,528,529,530,531,532,533 is shaded,534,535,536,537,53...

**math**

Look at the pattern of shaded numbers. use place value to describe how the number change.

**8th grade chemistry**

the answer is c :)

**Math**

A vase had 4 yellow flowers, 4 red flowers and 8 blue flowers. Donna takes one out, smells it and returns it to the vase. What is the probabilty she picked a red flower? What is the probabilty she picked a blue flower? Is it red 4:16 and blue 8:16?

**Math**

A die is rolled once. What is the probability of getting number 5?

**Math**

change the equation 2x+5y=8 into the form of y=ax+b and then substitute for the value of X by ( 0 , 1 , 2 , 3 ) 3 points are enought and line them on a graph.. Note : the second equation has the same way!

**math**

seven thousands five hundred fourty two.. THATS IT!

**Math**

Its is (2x+5)^2... Thats the correct Factorized answer

**Math**

Developed form : x^2 -1/2x -7x -7.5 : x^2 -7.5x -7.5

**math**

Ok now that makes more sense to me. i must have typed it wrong. thank you.

**math**

It would be more of a drop. But i still done get the formula. did i do the formula right in the first place?

**math**

Would a drop of 40 Celsius degrees be more or less than a drop of 40 fahrenheit degrees? explain why C = 5/9 (F - 32)40-32=8c F = 9/5 C + 32 40+32=86f

**6th Grade Grammar**

Its A

**6th Grade Grammar**

Present Perfect

**4th grade**

I have a rectangle equally divided into 24 parts I must cut it into 5 pieces and make a new shape. cannot bea rectangle

**preschool**

wow teach him to talk

**math**

Calculate the area of each composite figure.round to the nearest square unit, if necessary. a)15mm, 8mm, 10mm 30mm

**math**

The slopes of the two lines are given. Conclude whether the lines are parallel, perpendicular, or neither. a)m=2/3,m=4/6 b)m=3/4,m=-4/3 c)m=2,m=-2 d)m=1,m=-1 e)m=1/5,m=0.2 f)m=2 1/4, m=-4/9

**math**

The equation 9c-5f+160=0 describes the relationship between temperature, C, in degrees Celsius, and temperature, F, in degrees Fahrenheit. b)graph this relation.

**12th grade**

What is answer to 2/3 to second power and how do I calculate

**Chemistry**

does BaCl2+Pb(NO3)2 form a percipitate

**math**

what is the slope-intercept of:y=x-1

**Pre Calculus**

see... (- sin pi/12 + pi)/(sin (25 pi)/12 + pi) this becomes (sin pi/12 + pi)/(-sin (25 pi)/12 + pi) finish it off and you get negative one... why is sin(-20)/cos(380) equal to tan(-200) I don't understand

**Pre Calculus**

ok I appologize for my stupidity... I'll answer your question... ok instructions to this problem In problems 77-88, use properties of the trigonmetric functions to find the exact value of each expression. Do not use a calculator 85. sin(-pi/12)csc( (25 pi)/12 ) book dosen&...

**pre-algebra**

didn't get a clear answer, i do not understand how to find the answer to this problem:2y=2x+10

**algebra**

how do you find the slope-intercept of a line?

**math**

Three authors team up to write a childrens book. The publisher pays them according to the following contracts Author - Fixed Rate - Royalty Patricia $3000 - 1n Stephan - $1500 - 2n Harlan - $1000 - 3n Find a simplified expression that represents the total that the publisher mu...

**math**

Three authors team up to write a childrens book. The publisher pays them according to the following contracts Author - Fixed Rate - Royalty Patricia $3000 - 1n Stephan - $1500 - 2n Harlan - $1000 - 3n Find a simplified expression that represents the total that the publisher mu...

**Math**

Histogram, with data hours of sleep per night at 5 to 11 hours and scores from a quiz starting at 38 points to 92 points, how would that look?

**government**

is there a culture where they swore and had a sense to not get addicted to somthing

**Chemistry**

how do i know the specific heat?

**Chemistry**

I have a few problems im having trouble with, any help..? 1. If a peice of aluminum with mass 3.90g and a temperature of 99.3C is dropped into 10.0cm^3 of water at 22.6C, what will be the final temperature of the system? 2. If a peice of cadmium with a mass 65.6g and a temp. o...

**math**

the largest multiplication combonation for 180

**animals**

2. Out of these 5 animals, The animal that must eat most frequently to meet its energy needs is a. raccoon b. frog c. snake d. worm e. grasshopper

**english 12**

if you have found an asnwer please let me know also because im doing the exact same work, ENG4C except im doing lessons and this is lesson 14

**Algebra 2**

How do I do this f(x) = x - 5 (x + 4)^(1/2) when f(x) = -5 I know I can just guess and chekc but I want to know how to do this algebraically by subsituting in -5 and trying to solve for x which I don't know how to do... so -5 = x - 3 (x + 4)^(1/2) how do I solve for x?? al...

**Algebra 2**

I apologize for doulbe post forgive me

**Algebra 2**

Helllo I have no idea how to do this problem given f(x) = x-3(x + 4)^(1/2) how to solve for x when f(x) = -5 I know I could just guess and check but I would like to know how to do this algebraically by pluging in -5 like so -5 = x - 3 (x + 4)^(1/2) and solving for x which I do...

**Algebra 2**

How do I answer this f(x) = x - 3 (x + 4)^(1/2) and am asked how to solve for x when y = -5 I have no idea how to do this and know that I could just solve it by guess and checking but I want to know how to do this algebraically when plugging in the -5 and trying to solve for x...

**Algebra 2**

I know that were doing problems were there is a soultion given which is equal to X^? times a constant ... y = k x^? So this is problem I have to decide given a probelm x relationship to y (for example iverse square cube and so forth) this unkown variable is denoted witha (?) S...

**math**

draw a zig zab line on the y axis between the 0 and 40 and you can like so \ / \ / \ except smaller of course and tighter and between the two numbers

**8th grade**

how do diagram a sententce

**2nd grade**

what is an 8th of an inch?

**literary**

What are "styles" in literature?

**life science**

i have to write a essay on the human reverse life cycle. i know i have to start with a introduction. i need to know how to start the introduction.can you help me to start my human reverse life cycle introduction?

**Algebra**

24

**8th grade**

i need three traits of Spitz from call of the wild by jack london.

**Math**

The diameter of Earth is about 8,000 mi. Suppose a jet is traveling around Earth at an altitude of 30,000 ft. How many miles will the jet travel in a complete circle aroung Earth? a. 94,247.8 mi. b. 25,156.7 mi. c. 38,000 mi. d. 8,005.7 mi.

**English**

Thanks. very much appreciated. I wrote it and gave it up.

**English**

Write a short essay on the aspects of Michael Longley’s poems (their content and/or style) that you found most interesting. Support your discussion by reference to or quotation from the poems you have studied.

**math**

Itstheendofthelion

**Ok U CAN READ NOw**

my response is in first message and the question is the fourth one that i'm suppose to answer

**Ap World History**

Using the documents, compare and contrast the attitudes of Christianity and Islam toward merchants and trade from the religous' origins until about 1500. Are there indications of change over time in either case, or both? What kinds of additional documents would you need to...

**Ap World History**

Document six Source: Letters to and from Italian merchants in the fourteenth-century. A. Letter ordering religious paintings for sale. A panel of Our Lady on a background of fine gold with two doors, making a fine show wtih good and handsome figures by the best painter. Let th...

**Ap World History**

hopefully some body can tell me what they think and grade it using the rubrick thingy for ap world history rubric for a DBQ if i need to write in here because u don't have it i would be surprised but never the less would still do it next documents i'll write them

**Science**

What happens when you combine lemon juice and ammonia?

**Science**

What happens when you combine lemon juice and ammonia?

**math**

how to find the length and width and diagonal line of a rectangle

**9th grade**

Area of the triangle : Base x Height over 2

**Reading**

Thank you so much for your answer.

**Reading**

Who wrote the original story of The Three Little Pigs

**9th grade**

2x+5-7x=15 2x+5-7x-15=0 -5x-10=0 -5x=10 x=10/-5 x= -2

**civics today**

why is it sometimes necessary to judge what is a cause or an affect?

**spanish**

What does encantado mean English?

**AP World History**

ok thank you Can u look at the rest I got to go and will check back later and then rewrite it then repost

**AP World History**

I was asking for feedback

**AP World History**

Salt is a book about salt hence the title of the book. It’s important to realize how valuable salt is but Kurlansky rambles on and on about it. He drags it out as much as possible and goes for well over four hundred pages. There are some pictures from different sources th...

**AP World History**

Kurlansky supports this thesis by discussing the importance of fish and many other foods that can be preserved longer when salted. Having the ability to store food for a longer period of time allows for civilizations to grow and develop. Kurlansky discusses how wars were start...

**AP World History**

I started writing my othe essay and will finish the other one later. This essay is due the first day of class so I decided to work on this one and get this one done first. I'll finish the other one later. ______________________ Read 1 of the following books and write a 2-3...

**English**

great thanks a lot I'm going to take a couple of minutes to read everything you've posted then start fixing it up. Then I'm most likely am going to go running myself and won't post the updated version tell later late tonight or sometime in the evening if not to...

**English**

It's suppose to be 5. the second third and forth are all one but sense I'm not really sure how to make paragraphs here I couldn't show that. Paragraph three is really a quote from the book.

**English**

Over the summer I read several different books, but the two that stuck out the most to me was Salt A World History by Mark Kurlansky and SUB 4:00 Alan Webb and the Quest for the Fastest Mile by Chris Lear. When I am asked which author was more successful in creating a good pie...

**Algebra**

98/73 Don't know how to explain it though it's just the oposite of X negative to positive, positive to negative. Hope that made some sense.

**English**

I'm talking about Salt A Wrorld History I read like the whole thing. I skipped a few pages here and there. like I said thought it was good it did it's purpose to inform me on salt and it's purpose. The only thing I didn't like was how he brought up reciepes lef...

**English**

I don't know what to talk about in my essay fot Salt and SUB 4:00 I'm follwing the format and am writing about Salt first. Sense the book dosen't really tell a story I can't really critizize charecter development, time and setting or anything. Can I have some s...

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