Monday

October 24, 2016
Total # Posts: 262

**Chem**

Assuming 100% dissociation, calculate the freezing point and boiling point of 2.45 m Na2SO4(aq). Constants may be found here sites. google. com/site/chempendix/colligative.

*October 19, 2016*

**Chem**

A hypothetical molecule, X–Y, has a dipole moment of 1.76 D and a bond length of 151 pm. Calculate the percent ionic character of this molecule.

*September 29, 2016*

**math**

math nahi ata vyhef7 mm ,hvg67 d c cv hnhgcyjmwmye47;z,l4ghghfyhn ghcy

*September 16, 2016*

**Chem**

Suppose you have Avogadro\'s number of mini marshmallows and use them to cover the state of California which has a land area of 1.560 × 105 mi2. Each mini marshmallow has a diameter of 0.635 cm and a height of 2.54 cm. Assuming the marshmallows are packed together so...

*September 3, 2016*

**MATH**

ABCD is a rectangle and line DX and DY and XY are drawn where X is on AB and Y is on BC.the area of the triangle BXY is 4 ,area of triangle AXD is 5 and area of triangle CYD is 3.determine the area of the triangle DXY.

*August 12, 2016*

**math ratios**

mark is growing tomatoes in his greenhouse and needs to fill them with fertiliser. The ratio of concentrated fertiliser to water is 1:6. If mark needs 21 litres of diluted fertiliser, how much concentrated fertiliser and water will he need?

*July 15, 2016*

**la**

Okay thank you

*May 26, 2016*

**la**

How are the characters Jack and Algernon developed through the use of dialogue? How are these characters similar? How are they different? Support your answer with evidence.

*May 26, 2016*

**Chemistry **

aluminum hydroxide is decomposed to form aluminum oxide and water. if 2.23 moles of water are formed then how many of aluminum oxide are formed. how many grams of aluminum hydroxide must have been.decomposed?

*May 25, 2016*

**Math**

If log 20=P, express log 16 in terms of P. I actually don't want an answer. Is there possibly a hint I can get about an approach to the question? I thought it might have to do something with the common factors of 16 and 20, but I'm not sure.

*May 19, 2016*

**HISTORY PLEASE HELP!!!!!!!!!!**

Thank you~!

*March 3, 2016*

**HISTORY PLEASE HELP!!!!!!!!!!**

Okay so is 1. B and 2. B?

*March 3, 2016*

**HISTORY PLEASE HELP!!!!!!!!!!**

*** = my answer choice. 1. Which of the following best describes the Klu Klux Klan during Reconstruction? A. a gun club for former Confederate Soldiers. B. a secret political terrorist organization. C. a social group whose members masqueraded in sheets and pillowcases. *** D. ...

*March 3, 2016*

**writing**

What should i do to improve my writing? give me suggestion please.

*February 19, 2016*

**Microeconomics**

Give Three Examples of how savings can be channeled into productive investment?

*December 3, 2015*

**Algebra**

he larger of two numbers is eight more than five times the smaller number. The sum of the two numbers is 74

*October 20, 2015*

**Calculus**

Find all solutions of the equation correct to three decimal places. (ex: 0.617 or -1.764) x^3=3x-3

*September 24, 2015*

**Calculus**

Thanks!

*September 24, 2015*

**Calculus**

Which of the following is not a solution to the following equation? x^3-5x^2+4 = 0 x = 0 x = 4.83 x = -0.83 x = 1

*September 24, 2015*

**Calculus**

The answer should actually be Log (base 4) ^27

*August 4, 2015*

**Calculus**

Please help simplify this expression: 2 log (base 4) ^9 - log (base 2) ^3 The answer should be log(base 2) ^3

*August 4, 2015*

**Calculus**

Please simplify the expression: 2log(base 4)9 - log(base 2)3

*July 8, 2015*

**math **

you decide to dye your hair in various colors. If you die 1/3 of it blue , 1/4 pink and 1/4 of it black how much of your original hair is left?

*June 1, 2015*

**Math **

you have 1/2 of a brownie. You eat 3/4 of what you have , what fraction of the brownie did you eat?

*May 31, 2015*

**algebra**

Joy is planning a party. One game she decides to play is bobbing for apples. She divides her apples into three amounts, thinking that putting a different number in each same-sized bucket might make ti more fun. Three friends are helping her. Joy puts 1/2 of her apples plus 1/2...

*May 21, 2015*

**Statistics **

What is the lowest z-value for the highest 2% of observations on the standard normal distribution?

*April 22, 2015*

**math (urgent)**

A basketball or some stadium holds 20000 people. On average 140000 come to see the match. Average ticket price is $75. market research shows that if ticket price is decreased by $5 800 more people buy tickets. Find the price that will maximize revenue and find maximum revenue?

*April 1, 2015*

**Math**

A television company agrees to establish a community antenna in a new suburb at a charge of $5 each for 1000 subscribers or less.To encourage more subscribers,it is agreed to give a discount of $ 0.10 to each subscriber for every additional 10 subscribers in excess of 1000. ...

*April 1, 2015*

**chemistry**

H2So4+NH4OH Find the complete ionic equation Find the spectator ions Find the net ionic equation I feel like my answer is wrong i tried CIE: 2H+(aq)+So42-(aq)+2H4+(aq)---> 2NH4+(aq)+So42-(aq)+H2o (l)

*February 24, 2015*

**chemistry**

H2So4+NH4OH Find the complete ionic equation Find the spectator ions Find the net ionic equation I feel like my answer is wrong i tried CIE: 2H+(aq)+So42-(aq)+2H4+(aq)---> 2NH4+(aq)+So42-(aq)+H2o (l)

*February 24, 2015*

**Math**

A little girl lets go of a balloon that floats straight up to a up to height of 25ft . A boy standing 49ft away thrown a dart at the balloon popping it .what angle was dart thrown?

*December 4, 2014*

**maths**

The area of a rectangular field is 96m2. The length of one side is 12m. The farmer needs to know the perimeter to find out how much fencing will be?

*December 1, 2014*

**MATHS**

Each Sunday the hymns to be sung are displayed on a hymn-board using numbered cards. The cards have the digits 0 to 9 on them. The hymn book has 750 hymns in it. Three different hymns are sung each service. a) What is the smallest number of cards the church must have to be ...

*November 1, 2014*

**Physics **

A coil is wrapped with 200 turns of wire on the perimeter of a square frame of sides 20.5 cm. Each turn has the same area, equal to that of the frame, and the total resistance of the coil is 2.01 Ω. A uniform magnetic field is turned on perpendicular to the plane of the ...

*October 23, 2014*

**Physics **

An electron in an electron beam experiences a downward force of 2.0 x 10^-14 N while traveling in a magnetic field of 8.8 x 10 ^-2 T west. The charge on a proton is 1.60×10^−19. a) What is the magnitude of the velocity? Answer in units of m/s

*October 16, 2014*

**Physics**

It says its wrong

*October 16, 2014*

**Physics **

A solenoid 74.5 cm long has 350 turns and a radius of 2.26 cm. If it carries a current of 1.69 A, find the magnetic field along the axis at its center. Answer in units of T

*October 16, 2014*

**physics**

In 10 seconds a car accelerates 3m/s^2 to 90m/s. How fast was the car going before it accelerated?

*September 29, 2014*

**hca311**

In general, what is the main difference in opinion of the House and the Senate? Whose viewpoint do you agree with? How do these viewpoints impact financial challenges facing health care leaders?

*September 18, 2014*

**physics**

An 800 kg police boat slows down uniformly from 50 km/h [E] to 20 km/h [E] as it enters a harbour. If the boat slows down over a 30 m distance, what is the force of friction on the boat? (Hint: You will need to convert the velocities into m/s.)

*July 15, 2014*

**business**

Imagine this team is in a room together brainstorming and working on a team project. Using your experience and what you've learned this week, suggest a design for a room that would facilitate team interaction. In the team discussion area, respond to the following: How ...

*November 12, 2013*

**english 125**

Support your views with at least one example of a dramatic text and one example of a poem

*August 14, 2013*

**General Math**

I am so confused can anyone help me understand which one is correct and why.... Beta is estimated as the slope of a regression line fit to pairs of periodic returns, (rx, ry), where: rx is the return for a market index such as the S&P 500 Index. rx is the return for the stock ...

*July 21, 2013*

**math**

anything for a kid like a student in junor school?

*May 14, 2013*

**Chemistry **

11.4mL of 0.7 M NaOH was used to titrate 5.0mL hydrochloric acid. What is the molarity of the acid? a) 0.3 b) 1.6 c) 3.9 d) 5.0 e) 8.1 Can someone answer this question and explain how to get the answer?

*January 27, 2013*

**math**

The highest point on a trail, a pass with elevation of 1116 m, can be attained by climbing a 3.20 mile route from a waterfall, elevation of 60 m. The elevation gain from the waterfall to the pass is ___ feet. Do I just subtract 1116 - 60 = 1056 m and convert to feet? What is ...

*January 20, 2013*

**URGENT Chemistry Question!**

This might be a silly question, but... Is 6-8 on the pH scale considered neutral? If so, 6.23 pH is neutral and 8.78 should be considered basic. Is this correct?

*January 14, 2013*

**Chemistry **

I need to write the equation for the neutralization reaction of NaOH and nicotinic acid (C5H4NCOOH). Here is my attempt: C5H4NCOOH + NaOH → C5H4NCOONa + H2O First of all, is the formula for nicotinic acid correct? I am finding mixed answers when I search it on the ...

*January 13, 2013*

**Chemistry**

How do you write the chemical equation of the dissociation of nicotinic acid, C5H4NCOOH, in water?

*January 13, 2013*

**math**

An empty bucket is put under two faucets. If one faucet is turned on alone the bucket fills in 6 minutes. If the other faucet is turned on alone the bucket fills in 4 minutes. If both are turned how many seconds will it take to fill the bucket?

*January 7, 2013*

**Coordination Chemistry**

A particular metal ion octahedral complex has the same number of unpaired electrons (non-zero) whether the complex uses weak or strong field ligands. List several fourth period transition metal ions that could have this behavior. Also, if someone could point me in the ...

*December 1, 2012*

**Algebra**

An investor invested a total of 2900 in two mutual funds. One fund earned a 9% profit the other earned a 5% profit. If the investors total profit was $217 how much was invested in each mutual fund.

*November 4, 2012*

**Algebra**

An investor invested a total of 2900 in two mutual funds. One fund earned a 9% profit the other earned a 5% profit. If the investors total profit was $217 how much was invested in each mutual fund.

*November 4, 2012*

**chemistry**

When the iron(II) ammonium sulfate was mixed with the ferrocyanide ion, the precipitate was initially white but turned blue upon exposure to air. What happened to iron(III) ion when the precipitate turned blue?

*October 21, 2012*

**French 2**

Ma Jupe est trop longue (pantalon)

*October 21, 2012*

**Math**

22+49=

*October 15, 2012*

**Chemistry! Test tomorrow, pls help !**

we're given the equation: C6H6(l)+Br2(l) --> C6H5Br(l)+HBr(g) you need to prepare 50.0g pf bromobenzene and you expect no more than a 75% yield. How much benzene should you begin with if the yield is 75%. i know that % yield = (actual/theoretical) * 100 % but i don'...

*October 4, 2012*

**Chemistry Help! **

Anthracene which contains only Carbon and hydrogen, is an important source of dyes. When 250 mg of anthracene is burned in pure oxygen, 8.64 mg of CO2 and 1.26 mg of H2O are formed. What is the empirical formula of anthracene?

*October 4, 2012*

**Chemistry**

thank you so much!

*October 4, 2012*

**Chemistry**

is delta T supposed to stay in Celsius or should i convert it to kelvin ?

*October 4, 2012*

**Chemistry**

The combustion of benzoic acid releases 26.38kJ/g and is often used to calibrate a bomb calorimeter. the combustion of 1.045 g of benzoic acid caused the temperature of the calorimeter to rise by 5.985C. Useing the same calorimeter, a sample of 0.876g of octane (C8H18) was ...

*October 4, 2012*

**Math**

You are given 9 to 1 odds against rolling a sum of 8 with the roll of two fair dice, meaning you win $9 if you succeed and you lose $1 if you fail. Find the expected value (to you) of the game.

*September 30, 2012*

**Chemistry**

What volume (in liters) is occupied by 3.85×10^22 nitrogen molecules at 105 C and 255 mmHg?

*July 27, 2012*

**Statistics**

A comparison is made between two bus lines to determine if arrival times of their regular buses from Denver to Durango are off schedule by the same amount of time. For 51 randomly selected runs, bus line A was observed to be off schedule by an average time of 53 minutes, with ...

*July 11, 2012*

**Essay**

English

*June 30, 2012*

**computers**

future impact of mobile computing on desktop computing

*June 11, 2012*

**computers**

what is the future of email in India after real time communications on social network

*June 11, 2012*

**computers**

explain the scope of 6th sense technology in upcoming input & out\put devices

*June 11, 2012*

**computers**

write the features of next generation micro processers

*June 11, 2012*

**physics**

A steradian is a measure of solid angle. Imagine that you are at the center of a hollow sphere of radius R. Now consider an area A of that sphere. Divide that area by R^2 and you have the solid angle subtended by A, in steradians. A full sphere subtends a solid angle of 4 pi ...

*June 11, 2012*

**physics**

From a cliff that is 8.2 m above a lake, a young woman (mass 42 kg) jumps from rest, straight down into the water. At the instant she strikes the water, what is her de Broglie wavelength?

*April 23, 2012*

**science**

3.) D

*April 10, 2012*

**science**

2.) B

*April 10, 2012*

**Gloabl History**

What were the cause of the Korean War?

*February 8, 2012*

**Math**

From the top of a cliff 120 m above the water, the angle of depression of a boat on the water is 18 degrees. How far is the boat from the cliff?

*December 8, 2011*

**Math- Trig**

In an oblique triangle ABC, A=30 degree, and the perpendicular from C to AB is 12 inches long. Find the length of AB.

*December 8, 2011*

**trig**

what?

*December 3, 2011*

**trig**

Mr. Saurik proposed that the function h(t) = 6sin(3pi(t) - pi/3) + 5, where h(t) is in meters and t is in seconds, models the height above the ground of a point on a spinning wheel. Is Mr. Saurik's equation plausible? Explain.

*December 3, 2011*

**math- factoring**

factor completely 1) 8x^3 + 27y^3 2) u^3 + 125v^3

*November 28, 2011*

**math- factoring**

factor completely 1) 8x^3 + 27y^3 2) u^3 + 125v^3

*November 28, 2011*

**math**

The answer is one tenth so you knock one off

*November 18, 2011*

**english**

ok thank you for your help

*October 3, 2011*

**english**

sorry did not see the mistake but in the whole is the paragraph much better than what it was before?

*October 3, 2011*

**english**

please read the above paragraph and check if it s is correct and if any changes need to be made

*October 3, 2011*

**english**

so to improve it i could use more complex sentences and a range of vocabualry or? And would this paragraph be ok: i walk vigilantly to the first room, looking around me if there is someone coming behind me. open the door with great care and let me palm slide across the wall to...

*October 3, 2011*

**english**

I open the door to the first room. I look for the switch, the light turns on. The walls are red in colour and the curtains are blue so thick that not a single light can peep through. how can i improve this paragraph??? please help

*October 3, 2011*

**math**

the radius of a nickel is 1centermeter. if 10 nickles are placed in a row, how long will the row be?

*September 28, 2011*

**Chemistry**

What is the theoretical molarity value of HCL

*June 19, 2011*

**English - To Kill A Mockingbird**

You could talk about how Aunt Alexandra changes throughout the novel, from a mean lady to a more comforting and caring lady of the Maycomb community

*June 12, 2011*

**child care**

thank you!

*April 26, 2011*

**child care**

m a s t u r b a t o r y

*April 26, 2011*

**child care**

The first disorder unique to children and adolescents was? a.masturbatory insanity b.mental retardation c.moral insanity d.depression i thought b but i wasn't sure please help

*April 26, 2011*

**Math**

Whom should you see at the bank if you need to borrow money?

*April 13, 2011*

**physics please help**

Three point charges, 5.6E-6, 2.2E-6, and -3.0E-6, lie along the x-axis at 0.00 m, 0.031 m, and 0.059 m. What is the force exerted on q1 by the other two charges? What is the force exerted on q2 by the other forces? And what is the force exerted on q3 by the other two charges? ...

*March 22, 2011*

** Calculusss ( pleassee someboddy heelp )**

an airplane flying due east at 400 km/h pasess over an airport 12 minutes before a second plane flying south 30 degrees west at 500 km/h.if the airplanes are at the same altitude how fast will they by seprating when the seccong plane is over the airport.?When will they be the...

*March 18, 2011*

**calculussCalculuss ( pleassee heelp )**

Your Open QuestionShow me another » Calculuss homeworrk heelp? A rocket is being tracked from a radar post that is 10 km from the launch pad.the rocket arises vertically at a height of 17.32 km and then turns at an angle of 30 degrees fron the vertical directly away from...

*March 18, 2011*

**Math**

What is x to the fourth power minus 20x plus 64 equals 0

*March 9, 2011*

**Science**

1) A piece of paraffin wax has a density of 9g/cm3, mass of 900g, and a volume of 100cm3. If the wax was melted to the liquid state, approximately what would it's volume be? Would this wax float or sink in water? Explain. 2) A tin box ( Mass of 80g, Volume of 100cm3, and ...

*March 8, 2011*

**Science**

Officials have found certain amounts of hazardous Fe3+ ions in the town of Scienceville's water supply. Using your knowledge of chemical reactions, suggest a way to eliminate this ion from Sciencevills's drinking water supply. Provide a thorough explanation. This is a ...

*February 27, 2011*