Saturday

May 23, 2015

May 23, 2015

Total # Posts: 538

**Chemistry **

Calcium hydroxide has Ksp = 5.5 x 10-5 at 25 oC and a molar mass of 74.10 g/mol. How many grams of calcium hydroxide are needed to create 365 mL of a saturated solution of calcium hydroxide at 25 oC?
*April 27, 2015*

**Chemistry**

The radioactive nuclide 18F decays by first order kinetics with a half life of 1.83 hr. How many hours will it take for 68.5% of a give quantity of 18F to decay?
*April 27, 2015*

**Chemistry**

20.0 mL of a 0.18 M HCl solution are combined with 50.0 mL of a 0.085 M NaOH solution. What is the pH of the resulting solution?
*April 27, 2015*

**math**

Suppose there are 2 pieces of the cake left over,but you don't know how many pieces were in the whole cake. Explain how you could find the number of pieces in the whole cake if Taylor told you 1/6 of the cake was left. You may show your work in a drawing.
*April 16, 2015*

**MATH**

Lol Ms. Sue beat me to the answer :P
*March 24, 2015*

**MATH**

984,356 plus 1
*March 24, 2015*

**Science**

Would 2 be wet and 4 be warm?
*March 24, 2015*

**Science**

1. Air masses that form over land would be mostly A. Warm B. Cold C. Dry* D. Wet 2. Air masses that form over oceans or seas would be mostly A. Warm* B. Cold C. Dry D. Wet 3. Air masses that form over northern locations would be mostly A. Warm B. Cold* C. Dry D. Wet 4. Air ...
*March 24, 2015*

**Math**

Chad buys peanuts in 2-pound bags. He repackages them into bags that hold 5/6 pounds of peanuts.how many 2 pound bags should Chad buy so that he he can fill the 5/6 pound bags without any leftovers Common multiple of 5,6 is 30 how 6 goes into 30 5 times equals 5?
*March 12, 2015*

**Chemistry**

what is the PH of a solution of .1 M NAN3 that disassociates into HN3
*March 4, 2015*

**Chemistry**

What volume (mL) of 0.20 M HCl needs to be added to 1.23 L of 0.10 M acetic acid to reduce the percent ionization to 1.00%? Assume the volume of HCl added is negligible compared to the volume of the whole solution, and that the small x approximation is valid.
*March 3, 2015*

**college physics**

A fisherman poles a boat as he searches for his next catch. He pushes parallel to the length of the light pole, exerting a force of 245 on the bottom of a shallow lake. The pole lies in the vertical plane containing the boat's keel. At one moment, the pole makes an angle ...
*March 2, 2015*

**Chem-mystery**

sorry thats .2 M caoh2
*March 2, 2015*

**Chem-mystery**

Determine the PH of a solution that results from mixing 50 ml of .200 M hydroazoic acid, HN3 with 50 ml of CA(OH)2
*March 2, 2015*

**Chemistry **

What concentration of of CN- is needed to produce the same POH as 3.5*10^-5M solution of BA(OH)2?
*March 2, 2015*

**Chemistry**

What volume (mL) of .20 M HCL needs to be added to 1.23 L of .10 M acetic acid to reduce percent ionization to 1.00%?
*March 2, 2015*

**Chemistry**

I got 2*10^-5 for the Kb, is that right?
*March 2, 2015*

**Chemistry**

What concentration of of CN- is needed to produce the same POH as 3.5*10^-5M solution of BA(OH)2?
*March 2, 2015*

**History**

What does Truman mean when he claims, "Should we fail to aid Greece and Turkey in this fatal hour, the effect will be far reaching to the West, as well as t the East"?
*March 1, 2015*

**Algebra 1**

suppose you can work a total of no more than 20 hours per week at your two jobs. Babysitting pays $5 per hour, and your cashier job pays $6 per hour. youneed to earn at least $90per week to cover your expenses. Write a system of inequalities that show s the various numbers of ...
*December 15, 2014*

**History**

Between 1850 and 1860 several events occurred in the U.S. that highlighted the struggle over slavery. Describe these events and state what finally led to secession of the South beginning in December of 1860.
*December 9, 2014*

**Not possible?**

What are the questions?
*November 23, 2014*

**math**

The GCF of 8 and 24 is 8. The LCM of 8 and 24 is 24. I'm not sure what you're asking for the third part, what is the other sum? :)
*November 16, 2014*

**Help Please**

Is a(bc)=(ab)(ac)
*November 7, 2014*

**physics**

An 11.8 g bullet leaves the muzzle of a rifle with a speed of 578.5 m/s. What constant force is exerted on the bullet while it is traveling down the 0.6 m length of the barrel of the rifle? Answer in units of N
*November 6, 2014*

**Help please **

is a(bc)=(ab)(ac)
*November 5, 2014*

**Elementary manth**

Jose said that the square root -X=3 has no solutino since teh square root is a negative, is this true. I think it does has a solution
*November 5, 2014*

**Math **

Is this the same a(bc)=(ab)(ac)
*November 5, 2014*

**math**

A plank of wood 6m long is cut in the ratio 1:5. Find the lenght in centimetres of the longer piece
*November 3, 2014*

**Maths**

What you need is a common denominator, so the two bottom numbers are the same. So you want both bottom numbers, in this case, to be 8. So you times the 4 by 2, remembering that whatever you do to the bottom you do to the top, so you times the one by 2 as well giving you 2/8. 2...
*November 2, 2014*

**P.E. HEALTH**

Thank you
*October 31, 2014*

**P.E. HEALTH**

Because it goes through many diffrent places and is processed in the small intestine. Right or No?
*October 31, 2014*

**P.E. HEALTH**

True or False: The main process for digestion takes place in the stomach. Is the answer False?
*October 31, 2014*

**Trigonometry**

Triangle PQR has vertices P(0, 1), Q(0, -4), and R(2, 5). Find the coordinates of R' to the nearest hundredth after rotating triangle PQR counterclockwise about the origin 45º.
*October 17, 2014*

**Trigonometry**

Triangle PQR has vertices P(0, 1), Q(0, -4), and R(2, 5). Find the coordinates of R' to the nearest hundredth after rotating triangle PQR counterclockwise about the origin 45º.
*October 17, 2014*

**Math**

Let sin A = 12/13 with 90º≤A≤180º and tan B = -4/3 with 270º≤B≤360º. Find tan (A + B).
*October 15, 2014*

**Math**

Suppose sinA = 12/13 with 90º≤A≤180º. Suppose also that sinB = -7/25 with -90º≤B≤0º. Find cos(A - B).
*October 14, 2014*

**American Government**

I need help with the following question I am not sure if the answer is B or C. General Revenue Sharing offers states and localities even greater flexibility than block grants because they? A.are given a blank check. B.are completely unaccountable to the federal government. C....
*October 5, 2014*

**Trigonometry**

Evaluate the inverse trigonometric function. Give your answer to the nearest degree. (Enter only the number.) cos^-1 (-1)
*September 30, 2014*

**Trigonometry**

Solve sin θ = 0.95 for -90º ≤ θ ≤ 90º.
*September 30, 2014*

**Physics**

A renegade watermelon starts at x = 0 m and rolls at a constant velocity to x = −3.0 m at time t = 5.0 seconds. Then, it bumps into a wall and stops. Draw its position versus time graph from t = 0 s to t = 10 s.
*September 29, 2014*

**Physics**

Two rocks are thrown simultaneously from the top of a very tall tower with identical speeds of v = 7.70 m/s, but in two different directions.One of them is thrown with an angle of 10.0 degrees below the horizontal, the other one at an angle of 50.0 degrees above the horizontal...
*September 28, 2014*

**Physics**

A small, single engine airplane is about to take off. The airplane becomes airborne, when its speed reaches 117.0 km/h. The conditions at the airport are ideal, there is no wind. When the engine is running at its full power, the acceleration of the airplane is 2.40 m/s2. What ...
*September 28, 2014*

**Math Homework**

1.) If f(x)=x^2 and g(x)=4x-5, then fg(x)=4x^3-5x^2? True or False? My answer: True 2.) If f(x) =1/x and g(x)=1/x^2, find (g/f)(x). My answer: I need help with this one.
*September 26, 2014*

**Trigonometry**

A hill in the Tour de France bike race has a grade of 8%. To the nearest degree, what is the angle that this hill makes with the horizontal ground? Round to the nearest tenth of a degree.
*September 26, 2014*

**Trigonometry**

In the middle of town, State and Elm streets meet at an angle of 40º. A triangular pocket park between the streets stretches 100 yards along State Street and 53.2 yards along Elm Street. What formula for the area of the pocket park would you use?
*September 26, 2014*

**Trigonometry**

Suppose a triangular silk scarf has both of its shortest sides 14 inches long. If the angle between these sides is 110º, what is the area of the scarf? Round your answer to the nearest tenth of a square inch. (Enter only the number.)
*September 26, 2014*

**Physics 103**

You're squeezing a springy rubber ball in your hand. If you push inward on it with a force of 1 N, it dents inward 2 mm. How far must you dent it before it pushes outward with a force of 3 N?
*September 24, 2014*

**Physics 103**

Your new designer chair has an S-shaped tubular metal frame that behaves just like a spring with the spring constant 13000 N/m. When your friend, who weighs 940 N, sits on the chair, how far does it bend?
*September 24, 2014*

**Algebra1**

How to solve a inequality of -3x+3<6 Please help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
*September 22, 2014*

**Algebra1**

How to solve a inequality of -3x+3<6 Please help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
*September 22, 2014*

**Algebra1**

How to solve a inequality of -3x+3<6 Please help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
*September 22, 2014*

**Algebra1**

How to solve a inequality of -3x+3<6 Please help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
*September 22, 2014*

**Algebra1**

Thank you so much God bless you <3
*September 13, 2014*

**Algebra1**

Thank you so much God bless you <3
*September 13, 2014*

**Algebra1**

Thank you so much God bless you <3
*September 13, 2014*

**Algebra1**

Thank you so much God bless you <3
*September 13, 2014*

**Algebra1**

Thank you so much God bless you <3
*September 13, 2014*

**Algebra1**

Thank you so much God bless you <3
*September 13, 2014*

**Algebra1**

Simplify x-4y+2z-3x-3y+2z=❓can someone help me!!!!!!!😣
*September 13, 2014*

**Physics 1**

A golf ball is struck with a five iron on level ground. It lands 92.0m away 4.20s later. What was (a) the direction and (b) the magnitude of the initial velocity? I have no idea how to go about using the information given to find the first part (A). Even just a hint would be ...
*September 11, 2014*

**writing**

How do you write out a PEEL assessment?? (Point, Evidence, Evaluation, Language)
*September 11, 2014*

**Physical Science**

What volume would 90g occupy?
*September 7, 2014*

**Physical Science**

How many grams would occupy 12cm^3?
*September 7, 2014*

**Physics**

Two point charges are located on the y axis as follows: charge q1 = -2.50nC at y1 = -0.700m , and charge q2 = 3.30nC at the origin (y = 0). What is the magnitude of the net force exerted by these two charges on a third charge q3 = 9.00nC located at y3 = 0.250m ? What is the ...
*September 7, 2014*

**Physics**

Two small plastic spheres are given positive electrical charges. When they are 11.0cm apart, the repulsive force between them has magnitude 0.300N. What is the charge on each sphere if one sphere has four times the charge of the other?
*September 7, 2014*

**Physics**

A charge q1 = 5.00nC is placed at the origin of an xy-coordinate system, and a charge q2 = -2.00nC is placed on the positive x axis at x= 4.00cm . If a third charge q3 = 6.50nC is now placed at the point x= 4.00cm , y= 3.00cm find the x and y components of the total force ...
*September 7, 2014*

**English**

So does that make them a prescriptive or descriptive sentences?
*September 5, 2014*

**English**

I am having some trouble with prescriptive and descriptive rules. I have to decide whether the following sentences are prescriptive or descriptive. 1.) I will talked to you tomorrow about our plans this weekend. 2.) Joe and her love to watch Spartan football every Saturday. ...
*September 5, 2014*

**algebra1**

Thank you so much I got them both right on my quiz!!!!!!!!!!!!!!!😆😆😆😆😆😀😀
*August 27, 2014*

**algebra1**

Thanks which is the following is the most appropriate unit to describe the time you can drive a car based on the amount of gas. Minutes per gallon because the independent quantity is the gallons or gallons per minutes because the independent quality is the gallons
*August 27, 2014*

**algebra1**

114.5
*August 27, 2014*

**algebra1**

During on Alpine skiing event the times of four Scears were listed below time is measured in seconds skier a= 114.36 skier b=14.40 skier c=114.48 skierD =114.44 If the stopwatch used was only accurate to the 10th of a second which skiers time would be different from the others...
*August 27, 2014*

**english**

which is punctuated correctly?????? Despite the rain many people come to the outside wedding. We went to a movie, and did some shopping,after we ate lunch at the deli. Over the summer, many people plan to travel to exotic places, and play at the beach. When I get to school, I ...
*August 26, 2014*

**chemistry**

f 8.77 g of KI are dissolved in enough water to make 4.75 L of solution, what is the molarity of the solution?
*August 10, 2014*

**American Government**

Which is NOT a responsibility of the Department of Energy? To formulate national energy policy To research and develop nuclear and energy technology To regulate the distribution of electricity and natural gas To oversee the construction of national highways
*July 18, 2014*

**Chemistry**

I need help on these three questions. For all three of them you're supposed to write a balanced equation for each neutralization. Then, to find the concentrations of the unknown solutions if the following reactions are found to reach equivalence by titration. The three ...
*June 9, 2014*

**science**

UNSCRAMBLE RDOCRROUTINEDEVELOPMENT to make 2 words having to do with the reproductive system
*June 4, 2014*

**Family**

What career is more worthy to go to college for and save the most money? A.) Vet Tech B.) Preschool/Kindergarden Teacher C.) Pilot D.) Manager A or B ??
*April 2, 2014*

**English 9 - HELP!**

Are they right or not?
*March 11, 2014*

**math**

Brandon has a 55-gallon fish tank. He estimates he can drain the tank at an average rate of 11 gallons per minute. In a linear model of this situation, x represents the number of minutes the tank has been draining. Relative to this situation, what does the y-intercept ...
*March 1, 2014*

**algebra**

Brandon has a 55-gallon fish tank. He estimates he can drain the tank at an average rate of 11 gallons per minute. In a linear model of this situation, x represents the number of minutes the tank has been draining. Relative to this situation, what does the y-intercept ...
*March 1, 2014*

**Physics**

In a two-dimensional tug-of-war, Alex, Betty, and Charles pull horizontally on an automobile tire at the angles shown in the picture. The tire remains stationary in spite of the three pulls. Alex pulls with force of magnitude 207 N, and Charles pulls with force of magnitude ...
*March 1, 2014*

**Physics**

It does not state how to get b and I have been looking through my book and other textbooks and online but cannot find how.
*February 28, 2014*

**Physics**

I did not copy and paste. I simply stated to copy and paste into the Google search bar this question and there are many results with this similar question. Just copy and paste this question and click the first link tha appears (I cannot type the url)and there are three ...
*February 28, 2014*

**Physics**

In a two-dimensional tug-of-war, Alex, Betty, and Charles pull horizontally on an automobile tire at the angles shown in the picture. The tire remains stationary in spite of the three pulls. Alex pulls with force of magnitude 207 N, and Charles pulls with force of magnitude ...
*February 28, 2014*

**algebra**

Which graph best represent following expression|x-1|>2
*February 26, 2014*

**algebra**

Use properties of real numbers to rewrite expression(3/5)(5/3)answers are 8/15,, 15/8,, 0, 1
*February 22, 2014*

**algebra**

Name the property of real numbers illustrated by the equation2·(8·7)=(2·8)·7answers are distributive property, associative property multiplication, communicative property, associative addition
*February 22, 2014*

**algebra**

Name the property of real numbers illustrated by the equation2·(8·7)=(2·8)·7
*February 21, 2014*

**algebra**

Insert<,>or=to make the sentence true -1/3-2/5 answers are. = < >
*February 21, 2014*

**algebra**

Graph the number on a number line 10/7
*February 21, 2014*

**algebra**

To which set of numbers does the number belong-55 answers are, Natural, whole, integers, irrational
*February 21, 2014*

**algebra**

Which inequality represent the following eight fewer than a number is at least sentence 20 answers are. X-8>20. 8-X>20, x+8<20. X-8<20
*February 21, 2014*

**algebra**

Solve the equation or formula for the indicated variable s=3r4t+or t answers are. t=s/3-r. t=r4-3s t=s/3r4. T=811/s
*February 21, 2014*

**algebra**

Solve the equation|2x+10|>26 answers are x<-36or x>16,, x>-18or x<8, x<-18or x>8,x<-8or x>8
*February 20, 2014*

**algebra**

The equation y-100x=2000 can be used to represent monthly salary of a salary of a salesman ,y when he sells x computer system what is the salesman monthly salary if he sells no computer. Answers are 20, 100, 2000, 2100 thank you
*February 20, 2014*

**algebra**

Which of the following is equal to (2x/5-9)+9. Answers are 2x/5, 5x/2, 2x/5-45, (2 x-9)+45
*February 20, 2014*

**algebra**

Which equivalent form following equation 2x-3y=3
*February 20, 2014*