Friday

April 29, 2016
Total # Posts: 593

**Chemistry**

The combustion of 1 mole of CO according to the reaction CO(g) + ½O2(g) → CO2(g) + 67.6 kcal gives off how much heat?
*December 6, 2012*

**precalculus i dont understan this hw**

for you its easy because you understand it !
*December 2, 2012*

**precalculus i dont understan this hw**

How to prove sec x - tanx sinx= cosx
*December 2, 2012*

**I NEED HELP ASAP**

how to prove cos^2A(1+tan^2 A)=1
*December 2, 2012*

**I need help**

SOME ONE SHOW ME HOW YOU DO IT PLEASE
*December 2, 2012*

**I need help **

how to verify csc(pi/2- θ)/cscθ=tan θ Pi/2 is a fraction then the / sign is meant for dividing
*December 2, 2012*

**pre-calc help please !**

thank you !!!!
*December 2, 2012*

**pre-calc help please !**

how do you verify this identity Sin^3βcosβ+cos^3βsinβ=sinβcosβ
*December 2, 2012*

**English 4**

How does nature in Wordsworth's poetry differ from nature in Byron's description of the Byronic hero?
*November 27, 2012*

**Algebra 1**

Solve 7x/3 < 2
*November 19, 2012*

**English 4**

Name five of the political or economic events in the seventeenth or eighteenth centuries that influenced social unrest.
*November 13, 2012*

**English IV**

Is it true or false? A sentence is a group of words expressing a complete though and each will begin with a capital letter.
*November 9, 2012*

**English Capitalized**

aunt consuelo is consuelo melendez,doctor of dental surgery.
*November 8, 2012*

**Maths**

thanks Steve,but the second one still don't get it right
*November 8, 2012*

**Maths**

Simplify: 3-10+9.7 Simplify: 2+3.10 divided by 5.3-9 Simplify: 16-10 divided by 5+13
*November 8, 2012*

**English**

An appositive is a noun that is placed after another noun in order to tell more about it and it's usually set off with commas.
*November 8, 2012*

**English**

Are the questions true or false?
*November 8, 2012*

**English **

A sentence is a group of words expressing a complete though and each begin with a capital letter.
*November 8, 2012*

**English**

According to authorities;only 35% of criminals go to jail
*November 8, 2012*

**English 4**

I just need an idea of an opinion cause i dont know where to start.
*November 8, 2012*

**English 4**

Write a brief response to Polonius's statement "And thus do we of wisdom and of reach... By indirections find directions out." What do you think of his method of finding out the truth about his son?
*November 8, 2012*

**English 4**

Hamlet Act 1 scene 1-4 Most of the advice Polonius gives Laertes concerns etiquette and ways to make a good impression on other people. Name the precept from Polonius's farewell speech to his son that seems to contain the best advice on how to be a good person rather than ...
*November 6, 2012*

**chemistry**

How many moles of are needed to react with 0.460 ?
*November 6, 2012*

**trig**

find the exact value of sinu/2, given that cosu=-4/5 and pi/2less than u less than pi
*November 4, 2012*

**Physics**

An object is dropped from a cliff thatis 256 m above the sea. just prior to splashing into the water, how fast is it going? How long did it take to fall?
*October 31, 2012*

**Algebra 1**

Select the points that lie on the function h(x) = 3x^2.
*October 25, 2012*

**Algebra 1**

A clerk was asked to change a $10 bill. She returned 9 more dimes than nickels and twenty-one more quarters than dimes. How many coins of each did she return? I dont know why but this is stumping me. Help plz.!
*October 25, 2012*

**Pre-Cal/Trig**

Explain how to solve the following question. Surveying: From a point A hat is 10 meters above level ground, the angle of elevation of the top of a building is 42 degrees and the angle of depression of the base of the building is 8 degrees. Approximate the height of the building.
*October 24, 2012*

**Algebra 1**

Yea i juss did the problem on paper an got the same answer. Thank yu :)
*October 24, 2012*

**Algebra 1**

A girl scout troop sold cookies. If the girls sold 5 more boxes the second week than they did the first, and if they doubled the sales of the second week for the third week to sell a total of 431 boxes of cookies, how many did they sell each week?
*October 24, 2012*

**Algebra 1**

The larger of two consecutive integers is 7 greater than twice the smaller. Find the integers. A) 4,5 B) -8,-9 C) -5,-6
*October 24, 2012*

**Algebra 1**

Thanks :)
*October 23, 2012*

**Algebra 1**

Thank Yu. Unknowns seem to get me stuck. I have another one. Separate 846 into 3 parts so that the second part is twice the first part and the third part is triple the second part. Which of the following equations could be used to solve the problem?
*October 23, 2012*

**Algebra 1**

Two fewer than a number doubled is the same as the number decreased by 38. Find the number. If n is "the number," which equation could be used to solve for the number?
*October 23, 2012*

**Algebra 1**

Solve for b 3a + 2b = c
*October 19, 2012*

**Algebra 1**

Thank you :)
*October 19, 2012*

**Algebra 1**

-1 3/4 because 3.5 divided by 2 is 1.75 and 75 is 3/4 of 100?
*October 19, 2012*

**Algebra 1**

The choices for answers are -5 1/2 -1 3/4 -1 1/2
*October 19, 2012*

**Algebra 1**

-3 1/2= 1/2x+1/2x+x
*October 19, 2012*

**Algebra 1**

Solve 7+x-15=-2 2/3
*October 19, 2012*

**english**

It’s obvious that your position is false.” This statement employs which of the following rhetorical devices?
*October 17, 2012*

**Science**

How do fruit seeds help fertilize plants and help them grow?
*October 9, 2012*

**math**

Kyle has 3, so Robin has 3*3 scrapbooks. Add 3 and 9 to get 12, so combined they have A...12 scrapbooks
*October 4, 2012*

**Simplifying Fractions**

Are you just asking how to simplify them into those fractions? For the first one, divide the numerator and denominator by 20. Look for the greatest common denominator and divide the top and bottom by it. The second one has a gcd of 15, so divide both top and bottom by 15 to ...
*October 4, 2012*

**English**

Anything can be written good in 3rd person! I like the idea of using a little boy lost at the airport; sorry it was taken. Maybe you could write about a young child going through a rough time in his/her family. ( you know: maybe a death in the family or parents are getting ...
*October 4, 2012*

**British Lit**

What are the 3 languages that derive from the original Celtic language?
*October 4, 2012*

**British Lit**

What unified Britain to accept Christianity?
*October 4, 2012*

**British Lit**

What unified the religion of Britain?
*October 4, 2012*

**English 4**

Thats the one i was thinking to. Thank You.
*October 3, 2012*

**English 4**

What is the conceit in "There is a Garden in her Face"? a. The women's face is compared to lilies and roses in a garden because of her white skin and red cheeks. (Line 2) b. The women's lips are compared to cherries because she will not allow anyone to kiss ...
*October 3, 2012*

**English 4**

A recurring theme in literature is the transient nature of the world and life. Provide two ways in which this theme is expressed in Anglo-Saxon and medieval literature.
*October 2, 2012*

**English 4**

The 14th century was a time of what? a.peace b.urban growth c.inflation d.upheaval and change
*October 1, 2012*

**English 4**

What are 3 common forms Anglo-Saxon literature?
*October 1, 2012*

**math**

3.3g
*September 28, 2012*

**English**

Identify the verbal in the sentence below. Then, select the type of verbal. He will not allow the table to be moved.
*September 25, 2012*

**English**

is this a good thesis statement for a paper about Dave Grohl from the Foo Fighters. In my paper i want to include the work he put into his career, controversy after Kurt Cobain's death and success of the foo fighters. this is what i have so far: Although there were many ...
*September 25, 2012*

**algebra**

Just combine like terms. -2h-6w
*September 23, 2012*

**writing contest**

My creative writing teacher gave me a list of competitions, and one of them requires a protagonist that is transgender. What does it mean? Is it like Mulan, how she dressed up like and pretended to be a man, or does it mean people who have surgery to....you know...?
*September 23, 2012*

**Math**

I drew a diagram to figure it out and it seems that 9 tacks might be the least.
*September 23, 2012*

**math**

Using reference angles, (take 225 and subtract 180), you get 45. Since 225° is in quadrant 3, it is positive. Now you have 1 + tan^2 (45°)… Tan^2 is the same as tan x tan, so you have 1 + tan(45) x tan (45). If you use a 45-45-90 triangle, you get tan(45) =1. So, ...
*September 23, 2012*

**Creative and Critical Thinking**

Thank you Ms. Sue and Anonymous for your feedback. I think that is why I am having trouble getting started on this because I am not actually writing the letter. I am being asked to create a detailed outline of what I would say if I was to write this letter to the newspaper. I ...
*September 22, 2012*

**Creative and Critical Thinking**

Together We Stand Letter Outline Suppose you live in a new suburban community that combines all the amenities and benefits of a tight-knit small community with the benefits of living close to the big city. Some years pass, and several children and adults in the community start...
*September 22, 2012*

**Chemistry**

A glucose solution contains 55.0g of glucose C6H12O6 in 475g of water. Compute the freezing point and boiling point of the solution. Assume a density of 1.00g/mL for water.
*September 18, 2012*

**math**

I dont no
*September 13, 2012*

**math**

Draw one more rectangle using a ratio of 1:3 (a rectangle that is triple the width and length of the original shape). Determine and label the perimeter and area.
*August 3, 2012*

**CHEMISTRY**

. For which reaction is ƒ´Ssys ƒ® 0? A) CH4(g) + 2 O2(g) ¡÷ CO2(g) + 2 H2O(l) B) NH3(g) + HCl(g) ¡÷ NH4Cl(s) C) 2 NH4NO3(s) ¡÷ 2 N2(g) + O2(g) + 4 H2O(g) D) HCl(aq) + NaOH(aq) ¡÷ NaCl(aq) + H2O(l)
*August 1, 2012*

**CHEMISTRY**

14. Calculate ƒ´S0 for the formation of 1 mol of HI(g) from its elements given the following information: S0[H2(g)] = 131 J/mol∙K S0[I2(s)] = 116 J/mol∙K S0[HI(g)] = 206 J/mol∙K. A) 82 J/K B) 165 J/K C) 247 J/K D) 329 J/K
*August 1, 2012*

**CHEMISTRY**

The standard molar entropy of lead(II) bromide (PbBr2) is 161 J/mol • K. What is the entropy of 2.45 g of PbBr2? a. +1.07 J/K d. –161 J/K b. –1.07 J/K e. 0 J/K c. +161 J/K
*August 1, 2012*

**CHEMISTRY**

The entropy of a NaCl crystal is __________ a. an intensive property and a state function. b. an intensive property and a path function. c. an extensive property and a state function. d. an extensive property and a path function. e. not appropriately described in terms of an ...
*August 1, 2012*

**CHEMISTRY**

During a spontaneous chemical reaction, it is found that äSsys < 0. This means __________ a. äSsurr < 0 and its magnitude is < äSsys. b. äSsurr < 0 and its magnitude is > äSsys. c. äSsurr > 0 and its magnitude is < äSsys...
*August 1, 2012*

**CHEMISTRY**

If 1 mol of ice melts at its melting point of 273 K, the entropy change for the ice is 22.0 J/K. If the ice melts in someone’s hand at 34°C, what is the change in the entropy of the universe? Assume a final temperature for the water of 0°C. The enthalpy of fusion ...
*August 1, 2012*

**CHEMISTRY**

What is the entropy change to the surroundings when 1 mol of ice melts in someone’s hand if the hand temperature is 32°C? Assume a final temperature for the water of 0°C. The heat of fusion of ice is 6.01 kJ/mol. a. –188 J/K d. +19.7 J/K b. –22.0 J/K e...
*August 1, 2012*

**math**

For a tall kitchen bag the volume is set to be 240 in3. a. Write the polynomial K(x) = V(x) – 240 = _______________?
*July 29, 2012*

**Integrated Math 1**

Transformations
*July 25, 2012*

**please help! :( math!**

Transformations
*July 25, 2012*

**satistics**

n=18,x=14,p=0.75 using binomial probablility
*July 23, 2012*

**acc/291**

2 Foren Corporation had the following transactions pertaining to debt investments. Jan. 1 Purchased 50 8%, $1,000 Choate Co. bonds for $50,000 cash plus brokerage fees of $900. Interest is payable semiannually on July 1 and January 1. July 1 Received semiannual interest on ...
*June 16, 2012*

**physics**

two balls of different masses are thrown vertically upward with same initial velocity .calculate the ratio of ratio of maximum height attained by them
*May 22, 2012*

**Management**

Yes, those are the correct answers.
*May 17, 2012*

**english**

In what ways does Peter Pan (the play) explore notions of masculinity and femininity for its time period? Based on examples from the text, what is expected of boys/men and girls/women?
*April 27, 2012*

**english**

Put parentheses around the prepositional phrases. Identify the subject, verb, and any complements (direct object, indirect object, subject complement, objective complement). 1. Take the box to your mother. 2. Sandy's throw to first base was short. 3. Maine's eastern ...
*April 22, 2012*

**World history**

Why do you suppose the leaders of newly independent nations in southeast Asia tended to be repressive, corrupt, or both?
*April 12, 2012*

**math**

18 roses and 6 tulips coast $66. What is the unit price for each kind of flower?
*April 8, 2012*

**physics**

a) 14m/s b) 98 m/s^2 c) ? d) 0.10
*April 6, 2012*

**physics**

Two charged particles of equal magnitude (+Q and −Q) are fixed at opposite corners of a square that lies in a plane (see figure below). A test charge +q is placed at a third corner. +Q +q −Q What is the direction of the force on the test charge due to the two other...
*March 4, 2012*

**physics**

(1) Dervive an expression for the maximum speed of v of electron in terms of V,me, and e. (2) The electron is replaced with a proton that starts from rest at the positive plate and travels toward the negative plate. Compare the maximum speed of the protons to the maximum speed...
*February 20, 2012*

**Math**

If the principal P = $900, the interest I = $882, and time t = 7 years. What is the rate? What is the future value?
*January 29, 2012*

**math**

a farmer has 76 feet of fencing and wants to build a rectanglur pen for his chicken. he wants the greatest area possible, what dimensions should he use?
*January 19, 2012*

**Geometry**

Find the perimeter of PQR with vertices P(-2, 9), Q(7, -3), and R(-2, -3).
*January 13, 2012*

**math**

So I have to find percent of it
*January 9, 2012*

**physics**

an air puck of mass 0.347 kg is tied to a string and allowed to revolve in a circle of radius 1.09 m on a horizontal, frictionless table. The other end of the string passes through a hole in the center of the table and a mass of 1.48 kg is tied to it. The suspended mass ...
*December 17, 2011*

**Chemistry**

Suppose 0.30 g of ethane is mixed with 0.47 g of oxygen. Calculate the maximum mass of water that could be produced by the chemical reaction. Be sure your answer has the correct number of significant digits.
*December 6, 2011*

**ALGEBRA**

Many states offer personalized license plates. California, for example, allows personalized plates with seven spaces for numerals or letters, or one of the following four symbols. What is the total number of license plates possible using this counting scheme? (Assume that each...
*November 26, 2011*

**ALGEBRA**

ok I came up with I=Prt =500(.20)(1/12)=$8.30 is this correct.
*November 26, 2011*

**ALGEBRA**

Well that is the question.I really do not know.
*November 26, 2011*

**ALGEBRA**

Calculate the monthly finance charge for the following credit card transaction. Assume that it takes 10 days for a payment to be received and recorded and that the month is 30 days long. (Round your answer to the nearest cent.) $500 balance, 20% rate, $50 payment, previous ...
*November 26, 2011*

**ALGEBRA**

5,478-$478=$5,000 $112.08*60=$6,724.8 $6,724.8-$5,000=$1,724 $1,724/5=344.8 $344.8/$5,000=0.06896= 7.0% is this correct.
*November 26, 2011*

**ALGEBRA**

A car dealer will sell you a used car for $5,478 with $478 down and payments of $112.08 per month for 60 months. What is the simple interest rate? (Round each answer to the nearest tenth.)
*November 26, 2011*

**ALGEBRA**

Thanks for your help.You people need to learn how to talk to people.I was recently burned out of my house,and all of my books and everything was loss in the fire, so I do not have my book for a guide.If you feel like that do not respond to me,thats why I have asked for steps ...
*November 26, 2011*

**ALGEBRA**

Suppose you have a $1,000 charge on a credit card charging 1% monthly interest using the adjusted balance method. The minimum payment due in May is $50. How much will you save in interest charges in June by paying $100 instead? Steps please.
*November 26, 2011*