Thursday

August 21, 2014

August 21, 2014

Total # Posts: 853

**Chemistry 111**

what is the molar mass of Butane,C7H10?
*July 14, 2011*

**Chemistry 111**

How many moles of nitrogen N are there in 71.0g of Nitrous Oxide(N2O)?
*July 14, 2011*

**Chemistry 111**

What is the mass of 7080 moles of magnesium chloride (MgCl2)?
*July 14, 2011*

**physics**

Calculate the quantity of heat required to raise the temperature of 2.00 g of water 4.00◦C.
*July 5, 2011*

**physics**

A system is provided 50 J of heat and work done on the system is 10 J. What is the change in internal energy
*July 5, 2011*

**Physics**

A spherical piece of metal has a radius of .250m and a mass of 503 kg. what is its specific gravity?
*June 30, 2011*

**physics**

A satellite explodes in outer space, far from any other body, sending thousands of pieces in all directions. How does the linear momentum of the satellite before the explosion compare with the total linear momentum of all the pieces after the explosion?
*June 28, 2011*

**physics**

Two identical cars have the same speed, one traveling east and one traveling west. Do the cars have the same momentum?
*June 28, 2011*

**physics**

thanks that wesite is very helpful
*June 23, 2011*

**physics**

Im sorry 3.45 meters
*June 23, 2011*

**physics**

Whats the force of attraction between a 15.0kg box and a 63.0kg person if they are 3.45 apart?
*June 23, 2011*

**Life orentation**

A clear explanation of how smoking is a human factor that may cause ill health, accidents, crises or disaster?
*June 21, 2011*

**Math**

Ben takes 6hrs to get a job done & Ted takes 11hrs to get the same job done. If they work together how long will it take them?
*June 12, 2011*

**Statistics**

What does the scope of the graph refer to?
*June 10, 2011*

**Product of Terms [ 9th Grade]**

Is this exactly the way the terms are presented in our text book?
*June 10, 2011*

**8th grade math**

-First find the cost per ounce: 2.80 divided by 20 = .14 per ounce -Then, multiply by 35 to find the price for 35 ounces: .14 x 35 = 4.90 -Therefore, a 35 ounce bag of popcorn would be $4.90! Hope this helped!
*June 10, 2011*

**aleg/trig**

two forces of 14and 30 act on a body forming an obtuse angle w/ eachother. if the resultant is 60, whats the angle betweeen the 2 forces?
*June 9, 2011*

**alegbra/trig**

x^2+2x-15=0 solve by completing the square
*June 9, 2011*

**statistics**

The table below shows the number of girls who ran certain distance. -------------|---|----|---|----|----|--Distance(Km) | 5 | 10 |15 | 20 | 25 | -------------|---|----|---|----|----|--No. of girls | 2 | 1 | 3 | 4 | X | -------------|---|----|---|----|----|-- Given that the ...
*June 5, 2011*

**life orientation**

5 ways in which alcohol abuse impacts the community
*May 24, 2011*

**Drug addiction substance**

Human factors that cause ill health.accidents,crises/disaster and an appropriate way to deal with these
*May 16, 2011*

**Chemistry**

Can an acidic solution be made less acidic by adding an acidic solution?
*May 11, 2011*

**Physics**

If mass=100 tones, speed=8kn/s,height above ground=100km. What is the mass in kg?
*May 4, 2011*

**life orintation**

Pollution
*May 2, 2011*

**MATH**

We want an estimate of the mean time required for ships of a particular class to cross the Pacific Ocean from San Francisco to Tokyo. Little is known about the distribution of the mean time for this class of ships to cross the ocean due to the age variation of the ships. It is...
*May 1, 2011*

**Geology**

Why isn't the land surface of Earth flat after millions of years of erosion by mass wasting as well as by other erosional agents?
*April 20, 2011*

**Geology**

If you were building a house on a cliff, what would you look for to ensure that your house would not be destroyed through mass wasting? Be thorough! Give me AT LEAST two things.
*April 20, 2011*

**Geology**

Describe the effect of shear strength on the following: a.) slope angle b.) orientation of planes of weakness c.) water in soil d.) vegetation Be thorough and THINK!
*April 20, 2011*

**Geology**

If you were building a house on a cliff, what would you look for to ensure that your house would not be destroyed through mass wasting?
*April 20, 2011*

**science**

please help.....i dont have my txt book with me an i need 2 kno everything bout Non-Vascular and Vascular plants....please rovide a website...........i cant find any
*April 19, 2011*

**scirence**

hpw do water and dissolved materials move through non-vascular plants?
*April 19, 2011*

**Maths**

The right rectangular prirm is the diagqam when x=7cm, y=5cm and z=1ocm
*April 17, 2011*

**math help!**

How many different 5-person subcommittees can be formed from a club having 13 members?
*April 16, 2011*

**chemistry**

why is it a bad idea to use lead in ceramic object that are used to serve food
*April 14, 2011*

**Geology**

PLEASE HELP By applying the various principles, draw a cross section of an area in which the following sequences of events occurred. The relative time relationship for all events should be clear to you from your single cross section that shows what the geology looks like at ...
*April 13, 2011*

**9th grade math word problems**

i never can do word problems....please help... i got 7 of them.....these are word for word 1) Larry is 8 yrs older than his sister.In 3 yrs, hr will be twice as old as she will be then.how old is each now? 2) Jennifer is 6 yrs older than Sue. in 4 yrs, she will be twice as old...
*April 7, 2011*

**math**

i never can do word problems....please help... i got 7 of them.....these are word for word 1) Larry is 8 yrs older than his sister.In 3 yrs, hr will be twice as old as she will be then.how old is each now? 2) Jennifer is 6 yrs older than Sue. in 4 yrs, she will be twice as old...
*April 7, 2011*

**algebra **

a train leaves at 2pm heading due south at 60 mph. a second train leaves at 3:15pm heading due north at 80 mph. at what time will they be 250 miles apart?
*April 3, 2011*

**Chemistry**

Express the rate of the reaction 2C2H6 + 7O2 -> 4CO2 + 6H2O in terms of: a. Delta [C2H6] b. Delta [CO2] Show work please
*April 1, 2011*

**Math>>>>if anyone could check my answer**

this problem is difficutl for me i have an answer but im unsure so if someone could check my answer please. heres my problem: A light year is the distance that a light travels through a vacuum (space without matter) in one year. A light year is about 9.46 x 10^12km. The ...
*March 31, 2011*

**science**

Replication is called "semi-conservative" because half of the orginal strand is? idk i been workin on the question 4 an hr!!
*March 31, 2011*

**survey of science**

if a automobile with a mass of 500kg hits another car that has a mass of 650kg produces a force of 1800n, find the acceleration
*March 28, 2011*

**Managerial Accounting**

The questions in this exercise are based on JetBlue Airways Corporation. To answer the questions, you will need to download JetBlue’s 10-K/A for the year ended December 31, 2004 (10K/A with a filing date of March 8, 2005). You do not need to print the 10-K/A to answer the...
*March 28, 2011*

**math**

6n2-19n+15=o (the 2 is an exponent) idk how 2 do it the teacher told us how but didnt show us plz help
*March 23, 2011*

**legal terminology**

Defamation through speech or another heard medium is known as A. libel. B. slander. C. damage. D. damage. my answer B
*March 23, 2011*

**algebra2**

f(x)=3(x+18)(x-8)
*March 20, 2011*

**chemistry**

John has three bottle of mineral acid but does not know which is which since he did not label the bottles before filling them. Suggest a method to which could be used to identify the acids.
*March 20, 2011*

**Math**

Convert these unlike fractions to equivalent like fractions and add them. You must use the LCD to get the answer correct. If possible, reduce the final sum. 1/7 = ?/? + 3/14 = ?/? __________ ? - ??
*March 16, 2011*

**MATH**

-9 is a member of which subset of real numbers
*March 9, 2011*

**English**

also check for Capilization!!
*February 24, 2011*

**ENGLISH**

excuse me but I just wanted you to checka nd make sure that my commas was in the right place and if there is any other place I need to put some. I know that it is a little wordless but I am transcribing a message and that is what they said.
*February 24, 2011*

**ENGLISH**

Please read for errors and correct them. Thank you for your request for a credit card with our store. Before we can issue you a credit card, we must ask you to furnish the information on the enclosed credit application. When we receive it we will process your application as ...
*February 24, 2011*

**geometry**

a cable attach to the top of a tv antenna is 100ft long if the cable is fasten to the ground 28 ft from the base of the antenna how tall is the antenna?
*February 22, 2011*

**geometry**

a cable attach to the top of a tv antenna is 100 ft. if the cable is fasten to the ground 28 ft from the base of the antenna how tall is the antenna?
*February 22, 2011*

**Life orientation**

Working on holidays. During lunch break.working when you are ill.
*February 21, 2011*

**math**

how do i make this a true sentence? 3=4+3-1/2
*February 16, 2011*

**Finance**

This morning you purchased a stock that will pay an annual dividend of 1.90 per share next year. You require a 12 percent rate of return and annual dividend increases as 3.5 percent annually. What will be your capital gain be on this stock if you sell it 3 years from now?
*February 13, 2011*

**English**

I have to edit these. Add any words needed for grammatical or logical completeness 1. Very few black doctors were allowed to serve in the Civil War, and their qualifications had to be higher than white doctors. 2. Producers of violent video games are not capable or interested ...
*February 4, 2011*

**chemistry**

Analyze the chemical reactions that take place when a biological catalyst combines with a reactant (substrate) to form an unstable intermediate.
*February 2, 2011*

**algebra**

i have 2 solve by elimination an i keep gettin fractions when the answer is (-3,-3) my teacher gave me the answer an problem but she wants me 2 work it out idk how i keep gettin fractions the problem is: -3x-4y=21 8x-5y=-9 please help
*January 31, 2011*

**algebra**

o ok ty
*January 25, 2011*

**algebra**

3x+5y=0 2x-5y=-9 idk how 2 solve it then graph it my teacher eont help me plzz help
*January 25, 2011*

**chemistry**

Analyze the properties of a sodium atom and a sodium ion. What are the differences in mass, stability, and reactivity that are caused due to the differences between the sodium atom and sodium ion?
*January 21, 2011*

**AiMS MATH **

i cant remember how to find the value of the squareroot of 484. can anyone give me some steps or something.
*January 20, 2011*

**AiMS MATH**

sorry accidently clikd submit
*January 20, 2011*

**AiMS MATH**

i cant remember how to find the value of the squareroot of
*January 20, 2011*

**AiMS MATH**

yeah. thx
*January 20, 2011*

**AiMS MATH**

-5 Is A Member Of Which Subset Of Real Numbers. a) natural numbers b) whole numbers c) intergers d) rational numbers e) irrational numbers
*January 20, 2011*

**algebra**

graph triangle rst with vertices r(-1,3),s(4,-2), t(2,-5) Draw the image triangle r's't' formed by rotating triangle rst 90 degree, 180 degrees, and 270 degrees about the origin. Give the coordinates of r',s', and t'.
*January 18, 2011*

**math graphing the y-intercept**

o ok thx
*January 12, 2011*

**math graphing the y-intercept**

the website helped but it dont have it for fractons how do i do it with fractions?
*January 12, 2011*

**math graphing the y-intercept**

it helps but how do i do fratcions?
*January 12, 2011*

**math graphing the y-intercept**

ty
*January 12, 2011*

**math graphing the y-intercept**

y=2/3=1 dont know how 2 solve it 2 get the y-intercept dont know how 2 graph it please help and explain it please
*January 12, 2011*

**math graphing the y-intercept**

2 y=- +1 3 dont know how 2 solve it 2 get the y-intercept dont know how 2 graph it please help and explain it please help
*January 12, 2011*

**math graphing the y-intercept**

y=2over3=1 dont know how 2 solve it 2 get the y-intercept dont know how 2 graph it please help and explain it please
*January 12, 2011*

**math**

o ok thx
*January 12, 2011*

**math**

8(4u-1)-12u=11(2u-6) 32u-8-12u=22u-66 -12 20u-8=22u-66 -20u -8=2u-66 -8 2u=74 u=37 i kno 1 messed up but idk where
*January 12, 2011*

**Spanish 1-Please check and help **

no problemo
*January 12, 2011*

**math algebra 1a&1b**

ty
*January 12, 2011*

**math algebra 1a&1b**

the problem is 2(9n-1)+7(n+6)=-60 i get how 2 do it but i get confused on wat 2 do and then i get mixed up and mess it up please help
*January 12, 2011*

**math**

the lenght of the hypotenuse of a right triangle is 4cm. the lenght of one leg iz 2m. find the lenght of the other leg.?
*January 5, 2011*

**math**

i thought you had to substract when you have to find the hypothenuse.? and add when you need to fid the lenght of a leg.
*January 5, 2011*

**math**

what is the lenghts of the hypothenuse if the lenghts of the legs of a right triangle are 5cm and 12cm.?
*January 5, 2011*

**MATH please help!**

which set is infinite? P = {positive numbers less than 60} Q = {whole numbers between 10 and 20} R = {intergers ge=reater than 18} S = {even numbers between 5 and 15} P, Q, R, or S
*December 13, 2010*

**Aims Math**

what is the contrapositive of this statement "If two polygons are congruent, then they are also similar"
*December 13, 2010*

**Physics**

Consider the resonant frequencies of a 1.78 m tube closed at one end at 24°C. a) Lowest resonant frequency = Hz HELP: You know the length of the tube. What else do you need in order to calculate the frequency of the lowest resonance of a tube that's closed at one end? ...
*December 9, 2010*

**Physics**

Ultrasound reflected from an oncoming bloodstream that is moving at 30 cm/s is mixed with the original frequency of 1.3 MHz to produce beats. What is the beat frequency? (Velocity of sound in blood = 1540 m/s.) Beat frequency = Hz HELP: This problem involves two Doppler shifts...
*December 9, 2010*

**HSM/220**

Why does it seem like nobody wants to help with this problem? I am lost here too, a simple answer could help soo many people!
*December 6, 2010*

**College math**

Analyze x²-6x-5y=1. Determine the vertex, focus, directrix, intercepts, axis of symmetry, and at least 2 other points on the graph.
*December 6, 2010*

**college**

Old Hickory rolled into Washington with such force that an era is named after him. Ending years of what he (and many Americans) considered to be elitist government, Jackson threw open the doors of power to the people, and remade the executive branch in the process. Previous to...
*December 4, 2010*

**statistics**

A large number of samples of size ‘n’ are selected from a population and the mean of each sample is determined. What can be said about the mean of the sample means
*December 4, 2010*

**music**

my school subject is music
*December 4, 2010*

**math**

multply to find an equivalent fraction 3/4
*December 3, 2010*

**Physics**

A cooling fan is turned off when it is running at 920 rev/min. It turns 1100 revolutions before it comes to a stop. What was the fan's angular acceleration? How long did it take the fan to come to a complete stop?
*November 29, 2010*

**Math**

Please help! x-2y+z=7 2x+y-z=0 3x+2y-2z=-2 a. Solve the above system of equations using Gaussian Elimination or Gauss-Jordan Elimination. You must show row operations. b. Solve the above system of equations using Cramer's Rule.
*November 17, 2010*

**Qestion bout WH**

how can i get a better gradfe wen i cant remember all the stuff only bits and pieces
*November 16, 2010*

**Math**

4/5+8/15=
*November 12, 2010*

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