Friday

September 4, 2015
Total # Posts: 1,087

**chemistry**

a 5.00g sample of a hydrate of barium chloride was heated, and only 4.30g of the anhydrous salt remained. what is the formula of the hydrate?
*February 21, 2013*

**chemistry**

thank you!!
*February 21, 2013*

**chemistry**

if 125g of magnesium sulfate heptahydrate is completely dehydrated, how many grams of anhydrous salt will remain? i would really appreciate anyone's help
*February 21, 2013*

**chemistry**

thank you, very helpful
*February 21, 2013*

**chemistry**

what is the formula for the sodium sulfate if 3.54g of dry solid remain after 8.50g of hydrate are heated??
*February 21, 2013*

**science**

group 8 elements have full valence electron shells. (valence electron are in the outermost shell of an atom) this makes the elements in group 8 stable or inert. they are also transition metals. hope this helps!
*February 21, 2013*

**chemistry**

If 53.62 ml of an oil weighs 48.34 g, what is the specific gravity of the oil?
*February 19, 2013*

**physics**

a net force of 5000N accelerates a car from rest to 20m/s in 10s. what is the net force exerted on the car
*February 19, 2013*

**grade 9 english**

Are u disagreeing with my answer because it is wrong or is it your opinion???? I want to make sure I get the right answer
*February 18, 2013*

**grade 9 english**

Ms Sue I finished all the questions but I really only need help on the question 2b) consider why the mother's laughter sounds like wind chimes when she is talking to the doctor
*February 18, 2013*

**grade 9 english**

And for each womans laugh can I say that ms hallmans has almost like an evil laugh and the mothers more of like a fake laugh(like she didn't find it funny, she may have found it offensive) is that right? And I'm still having diffuculties on why the mothers laugh sounds...
*February 18, 2013*

**grade 9 english**

Thanks and for symbols can I write jealosy and selfish
*February 18, 2013*

**grade 9 english**

Ms. Sue?
*February 18, 2013*

**grade 9 english**

pls i really need help
*February 18, 2013*

**grade 9 english**

it is available online go to google and type symbols in short story stones by sandra birdsell, press enter and scroll down to find a site called PDF Stones by Sandra Birdsell - My Class Sites and u will find the story
*February 18, 2013*

**grade 9 english**

ive found a site with the story, would that help....
*February 18, 2013*

**grade 9 english**

im sorry but the reference does not help....... i still do not understand.... is there any way u can read it now(2 pages) and help me pls... im realy stuck....
*February 18, 2013*

**grade 9 english**

okay but that reference doesnt help answer my first question........ thank u anyways
*February 18, 2013*

**grade 9 english**

pls someone help
*February 18, 2013*

**grade 9 english**

i need help answering it. i dont understand the story
*February 18, 2013*

**grade 9 english**

questions for short story Stones by sandra birdsell. 1) in two sentences retell the story. 2a) Compare the descriptions of the two woman's laughter in paragraph three. Explain how the similes capture the personalities of each of these characters. 2b) consider why the ...
*February 18, 2013*

**Finance 100**

The following information is available to you: travelers' checks = $1 million; coin and paper currency = $30 million; repurchase agreements and Eurodollars = $15 million; demand deposits = $25 million; retail money market mutual funds = $60 million; savings accounts at ...
*February 18, 2013*

**math**

96x3
*February 13, 2013*

**math 4th grade**

4/12
*February 12, 2013*

**7th grade math**

what is the function of the following table: a tree that has a height of 12 feet will have a shadow of 10 feet
*January 30, 2013*

**chem**

if a 240mg of an acid H2A required 50.0ml of 0.10M NaOH for complete neutralization, what is yhe equivalent weight of the acid? what is its molecular weight?
*January 28, 2013*

**chem**

draw the approximate curve for a 25ml 0.10 M weak acid HA (K=1x10^-6) that is titrated with 0.10 M NaOH
*January 28, 2013*

**math**

Unit rate 6 eggs in 7 days?
*January 28, 2013*

**english**

i want to know more about the who what where why and how of robert falcon scott and the terra nova expedition
*January 24, 2013*

**anatomy**

how many extremities are in the human body?... is it only two with is our upper extremity and lower body?... help!..thanks!
*January 24, 2013*

**mat 140**

A football team gained 12 yards on one play, lost 40yards on another, and gained 34 yards on the last play of the first half. They had already gained 345 yards during the half. What was the total yardage gain for the first half?
*January 22, 2013*

**Physics**

Two springs are attached side by side to a green box of mass M. Determine an expression that describes the period of motion of the box attached to this combination of springs. The two individual springs have spring constants K1 and K2 respectively.
*January 21, 2013*

**Physics**

A 250 g object attached to a spring oscillates on a frictionless horizontal table with the frequency of 4 Hz and an amplitude of 20 cm. Calculate a) maximum potential energy of the system b) the displacement of the object when the potential energy is one-half of the maximum c...
*January 21, 2013*

**Statistics**

3 balls are drawn successively from a box containing 6red,4 white and 5 blue balls.Find the probability that they are drawn in order red,white and blue if:(a)each ball is replaced.(b)balls are not replaced
*January 20, 2013*

**science**

an iron box immersed in water,kerosene and coconut oil seperately.does same force of buoyant force on iron box in all liquids?
*January 17, 2013*

**GENERAL CHEMESTRY**

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? Provided an in depth explanation or analysis of subject or topic. Used a clear, ...
*January 16, 2013*

**GENERAL CHEMESTRY**

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 15, 2013*

**GENERAL CHEMESTRY**

Identify the two important classes of catalysts. Analyze the chemical reactions that take place when a biological catalyst combines with a reactant (substrate) to form an unstable intermediate.
*January 13, 2013*

**Math**

It's from Saxon math right?
*January 9, 2013*

**Math**

I don't know it too, sorry.
*January 9, 2013*

**Math **

What is 7/5 into a mixed number
*January 8, 2013*

**math**

105/5=21 21*2=42 blue 21*3=63 red
*January 7, 2013*

**Math**

41.5/5=8.3lb
*January 7, 2013*

**Math**

the x axis is horizontal, the y axis is vertical
*January 7, 2013*

**English-writeteacher**

That's what I'm concerned about- it's too confusing. It's meant to be going back and forth between the past and present; the present being the main character in her 60's in the window above the bar in the painting preparing to kill the couple, and the past ...
*January 7, 2013*

**English-writeteacher **

Apologies for the re-post but it didn't seem like my last post would be answered. I'm writing a short story for english based on the painting Nighthawks and I would really like some feedback. Any type of feedback would be highly appreciated. I'm kind of stuck. ...
*January 7, 2013*

**Pre-Algebra**

Sure. the first step is distributing: x+2=x+18 okay that doesn't make sense are you sure you wrote the question right?
*January 7, 2013*

**Pre-Algebra**

x+2=3((1/3)x+6)
*January 7, 2013*

**math**

A circle is 360 degrees, so divide 72 by 3 then divide 360 by that answer.
*January 7, 2013*

**Math**

You're welcome. Sorry about the double post, my computer is weird 0_0
*January 7, 2013*

**Math**

to find the perimeter you add the two measurements and multiply by 2: 2(6m+48m)=
*January 7, 2013*

**math**

No, when you multiply two negatives the answer is positive. Try again.
*January 7, 2013*

**English III short story**

I'm writing a short story for english based on the painting Nighthawks and I would really like some feedback. I'm kind of stuck. Thanks in advance! The Job They were just names. Just two insignificant names in the little black book, just like all the rest. Targets. ...
*January 7, 2013*

**Math**

First distribute the 3: (12x+18), then add 7: 12x+18+7=12x+25
*January 7, 2013*

**math**

Find the measure of JDB /J / 4x+5 / 2X+10 ------------/-----------B D
*December 27, 2012*

**Biology- check my answer (diff one)**

Well it would have had to been two of them since it's worth two points. C is I think 1.
*December 19, 2012*

**chemistry**

A scuba diver's tank contains 0.29kg of O2 compressed into a volume of 2.3L. Calculate the gas pressure at 8 degrees celcius.
*December 10, 2012*

**math**

38,000 and 42,000
*December 10, 2012*

**history**

compare the status of Europe and the United States after World War I. How were they different financially, politically, and psychologically?
*December 9, 2012*

**statistics**

8. Suppose that the IQ score for a person selected from a certain group of people is approximately N(; 100). Let X1;X2; : : : ;Xn be a random sample of such IQ scores. (a) How large should n be so that a 90% con dence interval for with maximum error " = 1 is [ ...
*December 5, 2012*

**Physics Energy and Work**

A 20.0 kg child on skis, initially at rest, slides 2.0 m down an incline at an angle of 20.0 degrees with the horizontal. If there is no friction between incline and skis, what is the kinetic energy of the child at the bottom of the incline?
*November 27, 2012*

**fraction maths**

12/13
*November 25, 2012*

**math**

Simplify sin 2 theta over 2 cos theta to a single primary trig function
*November 22, 2012*

**Critical Thinking**

The idea behind a comparative essay is, quite simply, that you take two or more things or ideas and compare their points of similarity or difference. For your second assignment in the Essay Series, create a comparative essay. In 1-2 pages, compare the following proverbs: •...
*October 30, 2012*

**MATH**

FIND THE AREA OF A RECTANGULAR FROM MEASURING 10 INCHES BY 8 INCHES.
*October 19, 2012*

**math**

what is 837 divided by f
*October 18, 2012*

**trigonometry**

A carpenter is building a house. He is constructing the roof. The roof has an angle of elevation of 40° from the horizontal. The height he wants to make the roof is 18 feet. How far is it from the bottom edge of the roof to the top of the roof? (Find the hypotenuse to the ...
*October 18, 2012*

**chemistry**

5.22kg of H2 reacts with 31.5kg of N2, which one is the limiting reactant?
*October 18, 2012*

**Math**

Which of the following options has the highest APY: a 6.25% APR compounded yearly, a 6.2% APR compounded monthly, or a 6.1% APR compounded continuously?
*October 3, 2012*

**Math**

What multiplies together to make 300cm3 (volume)
*September 28, 2012*

**english ap**

how do you find rhetorical devices?
*September 27, 2012*

**physics**

astronaut weighs 175Ib. what is his weight in newton?
*September 26, 2012*

**physics**

A sack of flour has weight of 19.8N. what is its weight in pounds?
*September 26, 2012*

**Math**

Thank you Ms. Sue.
*September 24, 2012*

**Math**

9 students in a group found that their mean score was 86 for the first math test. On the next test, each student in the group scored 7 points higher than on the first text. What was their mean score for the two tests? Any help would be appreciated.
*September 24, 2012*

**essay**

Imagine that you are hosting a group of exchange students next term. You are responsible for welcoming the students to campus and acquainting the students with life on campus socially as well as academically. Develop a "Welcome Letter" for the visiting students. Keep...
*September 21, 2012*

**accounting**

if i invest in municipal bonds that earn 5% interset or in taxable bonds issued by pepsi that pay 11% what is the tax rate at 15% and 30%; and what tax rate would there be indifferent between the bonds
*September 15, 2012*

**business**

B ($34,820.) This was in a multi-choice quiz, and after I took it, it showed me the correct answer. I may have not gotten it right, but hopefully another struggling student can benefit from this.
*September 11, 2012*

**geometry**

the coordinates of point S are given. the midpoing of RS is (6,-10). find the coordinates of point r. s(0,8)
*September 11, 2012*

**Math**

thank you so much for your help ! :)
*September 8, 2012*

**Math**

sorry, i forgot to say the instructions said "find all possible rational roots"
*September 8, 2012*

**Math**

Can someone show me the steps for how to solve: 1.) f(x) = 4x^4 -3x^3 +2x^2 +x-3 2.) f(x) = x^3 - 2x^2 -5x +6 3.) f(x) = -3x^3 -2x^2 + x -1 Thank you so much :)
*September 8, 2012*

**physics**

A crane uses a block and tackle to life a 25 kN boulder to a height of 26 m. a. how much work is done on the stone? put your answer in scientific notation. b. if the work is done in 15s, what is the power output in watts and in horsepower?
*September 3, 2012*

**biology**

Compare isomers and sterioisomers of glucose?
*August 28, 2012*

**relative frequency**

help with relative frequency
*July 27, 2012*

**Science**

I am very confused on what they are wanting us to do? I dont get how they want us to approach to explain criminal behaviot for the ehthical theories for the reading. Please help..:)
*July 23, 2012*

**Science**

You are a retired law enforcement officer who now teaches at a local community college in the criminal justice program. In addition to teaching ethics, you write crime novels on the side. You recently heard of a real-life case that you thought would make the basis for a good ...
*July 23, 2012*

**Statistics**

n1-25, n2-36, s1 power 2=50, s2 2 power=72, m1=100. m2=105
*July 23, 2012*

**eng literature**

i am given up by a topic to write discriptive essay topic is "joys of juvenile life" What to write in starting and in the ending of this essay.
*July 19, 2012*

**English**

You can tell the way they act. They will be intereted in the potty
*July 18, 2012*

**Ethics**

Im confused on how to do it
*July 18, 2012*

**Ethics**

you have examined four approaches to explaining criminal behavior: classical, positivist, structural, and ethical. Select and research one of those approaches. Identify the strengths and weaknesses of your selected approach. Explain whether you think the approach adequately ...
*July 18, 2012*

**algebra math**

what are the 2 factors of (156+100)
*July 14, 2012*

**geometry**

how far from the wall should he place the ladder? If his ladder is 13 feet long and has to reach a 12 feet window.
*June 19, 2012*

**physics**

A 90Kg box is pushed by a horizontal force F at constant speed up a ramp incined at 28 degrees. Determine the magnitude of applied force when teh ramp is frictionless and when the coefficient of kinetic friction is 0.18
*June 8, 2012*

**English**

I'm writing a paper about life as a sophomore in 2012 in the style of Charles Dickens ("It was the best of times, it was the worst of times") and I'm not sure if this sentence makes sense or is grammatically correct. Please help! It is a year of waiting; that...
*June 4, 2012*

**Chemistry**

I dont have answer
*May 28, 2012*

**ALGEBRA**

Suppose you see a car with an advertised price of $28,550 at $614.45 per month for 5 years. What is the amount of interest paid?
*May 27, 2012*

**ALGEBRA**

Evaluate the expression. (11) (5) (3) 3 3 1 Evaluate the expression. (7) 5 I had 7 as the answer.
*May 27, 2012*