Sunday

May 1, 2016
Total # Posts: 226

**Chemistry**

A solution of NaOH with pH 13.68 requires 35.00 mL of 0.128 M HClO_4_ to reach the equivalence point. How do you calculate [Na^+^] and [ClO_4_^-^] at the aquicalence point? (volumes are additive)
*March 8, 2012*

**Chemistry**

How do you get the pH 13.68 into OH^-^?
*March 8, 2012*

**chemistry**

How do I do convert the pH to the OH?
*March 8, 2012*

**chemistry**

A solution of NaOH with pH 13.68 requires 35.00 mL of 0.128 M HClO_4_ to reach the equivalence point. What is the volume of the NaOH solution?
*March 8, 2012*

**Math:Ratios**

This is 6th Grade math by the way.
*March 8, 2012*

**Math:Ratios**

The Ratios for students who have a computer to those who do not are 22;8 while the ratio for the ratio of students who have a cell phone to those who do not is 12;18. Which is greater?
*March 8, 2012*

**math**

At one tennis match, there were about 6000 people.about 40% more people attended the second match than the first match about how many people were at both games?
*February 25, 2012*

**math**

if two triangles are similar, what can you say about the ratios of the two side lengths within one triangle and the ratios of the corresponding side lengths in the other triangle? HELP ASAP!! THANK YOU TO WHOEVER HELPS!!
*February 16, 2012*

**Marketing**

Can you give me an example of a product and its marketing mix? By marketing mix, I am referring to the 4 P’s of Marketing- Price, Product, Place and Promotion For example like Yoplait, but I am not sure how the company uses the 4 P’s
*January 29, 2012*

**math**

At a given time, the height of an object is directly proportional to the length of the shadow that is cast on the ground. A person 6 feet tall casts a shadow 1 foot long at noon. a) What is the length of the shadow cast by a flagpole known to be 20 feet tall? b) A tree cast a ...
*January 26, 2012*

**3 grade english**

*The light from stars travels a long way.*
*January 20, 2012*

**Calculus AB**

Ugh the pi symbol didn't work. All of the ð should be pi. so it would be a(t) = picos(pit) and my answer should be sin(pit) + C
*January 20, 2012*

**Calculus AB**

A particle is moving along the x-axis so that at time t its acceleration is a(t)=ðcos(ðt) At time t=1/2, the velocity v of the particle is 1/2. Find the velocity of the particle at any time t. I think I got that right, as sinðt + C. Now it wants the minimum ...
*January 20, 2012*

**Trigonometry**

Oh that makes sense. That 2sin^2x + 13sinx - 7 can be factored. Thanks!
*January 16, 2012*

**Trigonometry**

2cos^2(x) = 13sinx - 5 How do i solve for x? I think i have to use the sin^2x + cos^2x = 1, but I'm not sure how to use that. I thought about maybe doing 2(1-sin^2x) = 13sinx - 5 but then i get stuck. Any suggestions?
*January 16, 2012*

**Physics**

Lai threw a ball downwards with an initial velocity of 11.0 m/s. What is in meters the displacement of the ball during the 2.9 seconds after she threw it? (don't include units in the answer, use 10.0 m/s2 for g and use the upward direction as positive)
*January 13, 2012*

**Calculus AB**

Nevermind I think I figured it out. I can just leave k in there and solve for it later.
*December 16, 2011*

**Calculus AB**

The rate of growth dP/dt of a population of bacteria is proportional to the square root of t, where p is the population size and t is the time in days (0<equal t <equal 10). That is, dp/dt = ksqrt(t). The initial size of the population is 500. After 1 day the population ...
*December 16, 2011*

**3rd grade math**

3×9=27
*December 12, 2011*

**Calculus AB**

Find a, b, c, and d such that the cubic function ax^3 + bx^2 + cx + d satisfies the given conditions Relative maximum: (2,4) Relative minimum: (4,2) Inflection point: (3,3) So this is what I have so far: f'(x) = 3a^2 + 2bx + c f''(x) = 6ax + 2b f(2) = a(8) + b(4...
*November 18, 2011*

**math**

This is going to involve trig functions. you have the angle, and if you draw a triangle and fill in the numbers, you'll see that the length of the slide is the hypoteneuse of this triangle. You are looking for the height of the triangle, which is the side opposite of the ...
*November 18, 2011*

**Happiness**

80%
*November 17, 2011*

**chemistry**

Please help me! i have no clue how to do this and its for my hw!
*November 17, 2011*

**chemistry**

well how do you work them out?
*November 17, 2011*

**chemistry**

are this 2 equations the same NIE? and if not how come? Write a net ionic equation for the reaction that occurs when aqueous solutions of ammonia and acetic acid are combined. Write a net ionic equation for the reaction that occurs when aqueous solutions of acetic acid and ...
*November 17, 2011*

**chemistry**

well it said it was wrong the way it was done on the other one
*November 17, 2011*

**chemistry**

Write a net ionic equation for the reaction that occurs when aqueous solutions of sodium hydroxide and perchloric acid are combined.
*November 17, 2011*

**cheistry**

Write a net ionic equation for the overall reaction that occurs when aqueous solutions of hydrosulfuric acid and potassium hydroxide are combined. Assume excess base.
*November 17, 2011*

**Chem**

Does any solid PbCl2 form when 3.1 mg NaCl is dissolved in 0.228 L of 0.12 M Pb(NO3)2. Find the Qsp.
*November 4, 2011*

**College Chemisrty**

Molarity is moles/Liter. First you need to convert 140g to moles. After you do that, you divide your answer by .400L to get your molarity.
*October 27, 2011*

**Math**

0 = 5+2(3+4x) Subtract 5 from both sides -5 = 2(3+4x) Distribute the 2 -5 = 2(3) + 2(4x) Simplify -5 = 6 + 8x Subtract 6 from both sides -11 = 8x Divide both sides by 8. -11/8 = x y = 5-2(3+4x) 0 = 5-2(3+4x) -5 = -2(3+4x) -5 = -6 - 8x 1 = -8x -1/8 = x Now you try the last one
*October 27, 2011*

**physics**

Two objects with masses of 3.00 kg and 7.00 kg are connected by a light string that passes over a frictionless pulley (a) Determine the tension in the string. .N (b) Determine the magnitude of the acceleration of each mass. .m/s2 (c) Determine the distance each mass will move ...
*October 14, 2011*

**physics**

A woman at an airport is towing her 21.0 kg suitcase at constant speed by pulling on the strap at an angle of è above the horizontal (Fig. P4.40). She pulls on the strap with a 34.0 N force, and the friction force on the suitcase is 11.0 N. (a) What angle does the strap...
*October 14, 2011*

**physics**

A hockey puck is hit on a frozen lake and starts moving with a speed of 10.6 m/s. Five seconds later, its speed is 6.10 m/s. (a) What is its average acceleration? m/s2 (b) What is the average value of the coefficient of kinetic friction between puck and ice? (c) How far does ...
*October 14, 2011*

**Chemistry**

What is the element oxidized and the element reduced in the equation: HAsO2 + 2 Ag+ + 2 H2O 2 Ag + H3AsO4 + 2 H+
*October 13, 2011*

**Physics**

A boat moves through the water with two forces acting on it. One is a 1500 N forward push by the motor, and the other is an 1400 N resistive force due to the water. (a) What is the acceleration of the 1100 kg boat? m/s 2 (b) If it starts from rest, how far will it move in 7.0 ...
*October 7, 2011*

**science**

jason weighs 10kg. the force of gravity is 9.8 m/s2. what is the amount of force jason is applying to the ground when standing?
*October 6, 2011*

**science**

jason weighs 10kg. the force of gravity is 9.8 m/s2. what is the amount of force jason is applying to the ground when standing?
*October 6, 2011*

**Math story problem**

83,8.30,8.00,0800
*October 6, 2011*

**chemistry**

The radius of a barium atom is 217 pm. How many barium atoms would have to be laid side by side to span a distance of 4.33 mm?
*September 25, 2011*

**chemistry**

The mass of a single silver atom is 1.79E-22 grams. How many silver atoms would there be in 112 milligrams of silver?
*September 25, 2011*

**physics **

The figure below shows a general situation in which a stream of people attempt to escape through an exit door that turns out to be locked. The people move toward the door at speed v = 4.1 m/s, are each d = 0.30 m in depth, and are separated by L = 1.75 m. The arrangement in ...
*September 3, 2011*

**geometry**

GIVEN THE NOTATION BELOW PLACE = OR =WITH SQUIGGLY LINE OVER IT IN THE BLANK TO SHOW THE CORRECT SYMBOL THAT SHOULD BE USED. EX. XY___AB
*August 31, 2011*

**Accounting**

What is the maturity value of a 120-day, 4 % note for $ 18,000
*June 12, 2011*

**English 3**

I already read this book, twice, and i loved it. Steinbeck creates an unsettling/calm atmosphere. Almost as if everything is TOO peaceful.
*May 10, 2011*

**Math**

Whole Number Math Riddle Clue 1: Double my tens digit and get my ones digit. Clue 2: Double me and I am less than 50
*April 4, 2011*

**Physics**

The normal force and the centripetal *force need to equal eachother if the car is to remain grounded, so N=mV^2/r or mg=mV^2/r and then the masses cancel and we have g=V^2/r or v^2=gr.
*March 30, 2011*

**math**

when you work out the problems you end up with aviseman which i am pretty sure means a vice man
*March 28, 2011*

**physics**

You are driving a car with a power output of 56,000 Watts. How many seconds will it take to go from 0 m/s to 27 m/s?
*March 27, 2011*

**finding perimeters**

tell the dimensions and perimeters : 9 square inches
*March 24, 2011*

**Business Communications**

Which of the following would be the MOST useful strategy for learning to communicate effectively with international employees working in your overseas divisions? a) Devote time to learning the rules for communicating with people from each of the countries you will be ...
*February 24, 2011*

**Business Communications**

Crystal agreed to serve on a company’s advisory board and now has to contact them to say she cannot attend a scheduled meeting where she was to be one of the several key speakers. What should she do? a) Let the company know she cannot attend and that they will have to ...
*February 24, 2011*

**6th grade science**

science math social studies
*February 16, 2011*

**math**

which is greater and less than <>
*January 6, 2011*

**Math**

What kind of graph is two circles put together called?
*November 30, 2010*

**3rd grade math**

mrs.stewart is my tacher
*November 18, 2010*

**contemporary Math**

If there are 2 red disks numbered 1 through 2, and 6 yellow disks numbered 3 through 8, find the probability of selecting a red disk, givent that an odd-numbered disk is selected?
*November 17, 2010*

**3rd grade**

I need help!!!!
*November 9, 2010*

**Algebra 1**

how do i work out the equation S= B + 1/2Pl solving for l
*November 3, 2010*

**English**

How does the Scarlet letter A affect Hester Prynne's personality and her thinking concerning the position of women in society?
*November 1, 2010*

**Media Studies**

Hi I posted my essay topic earlier; but could anyone give me some ideas of the role of journalism in the digital society?
*October 25, 2010*

**Media Studies**

Hi, I am writing an essay for my media studies class on the topic; Has digital technology made professional journalists obsolete? What is the role of journalism in a digital society? Can anyone give me ideas for arguments I can come up with or evidence. Thanks
*October 25, 2010*

**consumer/business math**

Haha Its funny because the person calling people a retard is the one who got it wrong. $348.50
*October 13, 2010*

**Math 3**

Use the digits 3, 7, 1, & 5 to write a number that rounds to each of the following numbers. 1700, 3500,1600 and 7400
*September 17, 2010*

**History**

I need to Analyze the social/cultural/economic responses of the British, French, and Spanish to the Native Americans of North America prior to 1750
*September 7, 2010*

**science**

no its metalloids
*August 18, 2010*

**algebra**

please i need help factoring these problems....20xy, 36g^2h^2, and 44m^2n
*August 18, 2010*

**algebra**

its in my work book....and it says factor eaxh expression...and one of them is 20xy....the problems before this is find the prime factorization of each number....and then it takes me to this algebra...factor each expression...20xy, 44m^2n, 36g^2h^2
*August 18, 2010*

**algebra**

i have got a lot of math problems to do...if you can just help me with 3 of these problems...i could do the rest...thank you so much!! factor each expression::: 1. 20xy 2. 36g^2h^2 3. 44m^2n
*August 18, 2010*

**english**

On Frankeinstein on the continuation of walton's letter, how does walton avoid the threat of a mutiny? and why is walton returning to England? What will Victor do?
*May 19, 2010*

**Statistics**

Suppose a bag contains 7 red chips, 8 black chips, and 3 green chips. You draw two chips (without replacement) from the bag. Find the probability that you drew a red chip ﬁrst and then a black chip second.
*April 30, 2010*

**physics**

dude i have no idea!
*April 30, 2010*

**math**

what is 150 divided by 2
*April 7, 2010*

**math **

thanks
*April 7, 2010*

**math **

how do u calculate the area of a triangle
*April 7, 2010*

**math**

9/8 which =1 1/8
*April 7, 2010*

**math**

what is half of 2 1/4
*April 7, 2010*

**math**

4,000
*April 7, 2010*

**math**

my bad how many mLis 4 liters
*April 7, 2010*

**math**

how many mL is 4 litters
*April 7, 2010*

**math**

35 cookies
*April 7, 2010*

**math**

if albert baked 60 cookies and gave 7/12 away how many cookies does he have left
*April 7, 2010*

**English**

I lied! It's actually: Whether a message is effective
*March 13, 2010*

**English**

OCR: Intended Audience
*March 13, 2010*

**algebre II**

Factor and solve: 4x^3-32=0 Please so work so I can finish on my own with an example problem. Thanks! <3
*February 24, 2010*

**math**

Factor the expression on the left side of each equation. Then solve the equation. 64x^3-1=0
*February 22, 2010*

**math**

Sorry, I was letting someone use my computer, and their name showed up on the last post, but it was me that posted it.
*February 22, 2010*

**math**

Factor the expression on the lift side of each equation. Then solce the equation: 8xcubed-27=0... also please show work so I understand how you got the answer.
*February 22, 2010*

**English**

Who said this quote? "If you are alone, I'll be your shadow. If you want to cry, I'll be your shoulder. If you need to be happy, I'll be your smile. But anytime you need a friend, I'll just be me."
*February 4, 2010*

**science**

friction
*February 4, 2010*

**math**

It's asking for you're opinion only you know the answer to that. It's different for everyone.
*February 4, 2010*

**Chem**

Explain why chemists might want to prepare substituted hydrocarbons. Give two examples of possible substitutions.
*February 4, 2010*

**social studies**

i have to choose a location for a theme park , how would geography affect my choice
*February 3, 2010*

**science**

how did organic compounds get this name?
*February 2, 2010*

**math**

it means equal to, or the same as.
*February 2, 2010*

**Science**

3/200,000 and when you divide you get 66,667.
*January 25, 2010*

**6th grade**

how do you change a fraction into a mixed number?
*January 2, 2010*

**6th grade**

what did egyptian pharoahs of old kingdoms build for their tombs?
*December 17, 2009*

**world history**

Enlightenment philosophers and reformers criticized the great inequalities that existed in society and believed that thought reason, a better society was possible. They called for social equality, abolition of slavery, prision reform, and improvements in education. What ...
*December 7, 2009*

**physical science**

What mass of NaCl do you need to make 71g of Cl2?
*November 15, 2009*