Sunday
February 14, 2016

Posts by Lola

Total # Posts: 567

Chemistry
to make a sodium chloride solution of the same molarity as household bleach (as determined in question 1) how many grams of salt would be needed for every 100 ml of solution question 1 answer: 0.871 M
February 7, 2016

Math - Algebra I
Consider the subsets of R defined as follows: An is the interval (0,1/n) for all natural numbers. Show that: U (union) n=1 to infinity of An = (0,1) Here's what I tried as a proof: Show that (0,1) is a subset of U n=1 to infinity An Take an arbitrary real number a in (0,1...
February 7, 2016

English
What???????
January 9, 2016

English
What is number 4
January 9, 2016

history
nvm i understand now
January 6, 2016

history
no plz gve me ideas
January 6, 2016

history
What has made the United States so attractive to peoples from other nations over the years? i will like to have a paragraph plz.
January 6, 2016

English
I need help Can u tell me the meaning MEDIA IS THE NERVOUS SYSTEM OF OUR CULTURE plz tell me what it means
January 6, 2016

history
she made a school that Black Americans can go to and also, for being an important influence on the president and making a difference in Black Americans' lives.
January 6, 2016

history
I cant see why she s a hero.
January 6, 2016

history
How is Mary McLeod Bethune a hero?Please no links and please at least 8-10 sentences.
January 6, 2016

help
What makes you comfortable at home? give at least 5 sentences What would scare in a foreign land? give at least 5 sentences
January 5, 2016

history
If i was forced to live far away from my homeland i wouldnt be happy because their taking me away from where i feel most comfortable at.I will also be mad because i wouldnt know where ill live but i need to write three paragraphs
January 5, 2016

history
If you were forced to live far away from your homeland, how would you react to your situation? Explain your reaction.
January 5, 2016

English
The class was asked to sit: b. quietly anywhere.
January 4, 2016

Algebra 1
You are welcome
January 4, 2016

Algebra 1
cookies = x brownies = y 2x + y = 2.25 y = 2.25 - 2x 4x +3y = 5.75 its $0.50 per cookie and $1.25 per brownie
January 4, 2016

Geography (Ms.Sue ) Help
The dominant physical-geographic feature is A. ascending plateaus.
January 4, 2016

History
Do you know how she made the USA a safe place to live
January 4, 2016

History
How did ruby bridges make the USA a safe place to live,work,and raise a family
January 4, 2016

Math
Jana is taking pledges for a bike-a-thon fundraiser. Ivan pledged $4.25,plus $1.25 for each mile that Jana bikes. Vicky pledged $5.75,plus &0.75 for each mile that Jana bikes. (Part A)- write expression for the number of dollars Ivan pledged and the number of dollars Vicky ...
January 3, 2016

Math
Im trying to find out what the value of this equation is: x^37+ x^31 + x^47+ x^26+ x^63+ x^9 + 6. By using the fact that (x + 1/x) ^2 = 3
January 2, 2016

science
a trait developed through learning is a ?
November 20, 2015

science
A boy shoves his stuffed toy zebra down a frictionless chute, starting at a height of 1.75 m above the bottom of the chute and with an initial speed of 1.07 m/s. The toy animal emerges horizontally from the bottom of the chute and continues sliding along a horizontal surface ...
November 19, 2015

Algebra 2
Can someone please help me solve this absolute value equation? The equation is: -4|t-2|-9=-37 The thing I don't understand is how to isolate the absolute value (t-2). Do I divide both sides by -4 and then add both sides by -9? In that case I would get |t-2|= 73/4
October 27, 2015

jms
When solving problems, which of these is performed before the others? A. Multiplication B. Addition C. Exponents D. Subtraction
October 5, 2015

math
OK thanks so much! :D
October 5, 2015

math
What is 45/100 in its simplest form? 9/20 And how do I divide fractions on a calculator?!
October 5, 2015

math
A length of ribbon is 3 1/2 yd long. How many pieces 1 5/9 yd long can Joy cut from the ribbon? 1 2 3 4 Which number is equivalent to 0.45? 1/45 5/11 4/5 1/4 What is 3.56 x 10 *5 in standard notation? 356,000 3,560,000 0.00356 0.0000356 Ms. Johnson's class is having a ...
October 5, 2015

Math help please?! :)
Ok no wait I get it... I had to read it a few times but I got it! thanks So what about the first one?!
October 5, 2015

Math help please?! :)
I still kind of don't get it... sorry! :,(
October 5, 2015

math
Am i correct? 90° ferenhight = 33° celcious
August 31, 2015

Chemistry
All Brønsted-Lowry acids A. are aqueous solutions. B. can act as Arrhenius acids. C. donate protons. D. all of the above I think it is D, but I also think it is c can you please tell me if either of these answers are right thanks
August 11, 2015

Chemistry
All Brønsted-Lowry acids A. are aqueous solutions. B. can act as Arrhenius acids. C. donate protons. D. all of the above I am a little confused. I think it is D, but I'm second guessing myself with C
August 11, 2015

physics
two charges, -16uC and +4uC, are separated by three meters. a) Where along the line through the charges is the electric field zero? b) What is the force on a 14uC charge place there? uC = microCoulombs for a), would it be 16+ -4? Thank you!
July 29, 2015

Information literacy lesson 2
B
July 6, 2015

physics
never mind! I got it! =) thanks guys!
July 5, 2015

physics
A rifle fires a 2.11 10-2-kg pellet straight upward, because the pellet rests on a compressed spring that is released when the trigger is pulled. The spring has a negligible mass and is compressed by 8.37 10-2 m from its unstrained length. The pellet rises to a maximum height ...
July 5, 2015

physics
An 0.90 kg object is attached to one end of a spring, and the system is set into simple harmonic motion. The displacement x of the object as a function of time is shown in the drawing. With the aid of these data, determine the following values. I got a,b,d,e right. for C, I ...
July 4, 2015

physics
Damon, help me!!! =(
July 4, 2015

physics
When responding to sound, the human eardrum vibrates about its equilibrium position. Suppose an eardrum is vibrating with an amplitude of 5.60 10-7 m and a maximum speed of 2.82 10-3 m/s. I don't see how A and a, is given. =/
July 4, 2015

physics
thank you! =)
July 4, 2015

physics
A hand exerciser utilizes a coiled spring. A force of 82.0 N is required to compress the string by 0.0191 m. Determine the force needed to compress the spring by 0.0520 m.
July 4, 2015

physics
i got it! thank you!! =)
July 2, 2015

physics
please help me!
July 2, 2015

physics
Physics Genius! please let me! Three objects lie in the x, y plane. Each rotates about the z axis with an angular speed of 6.12 rad/s. The mass m of each object and its perpendicular distance r from the z axis are as follows: (1) m1 = 6.36 kg and r1 = 2.20 m, (2) m2 = 3.92 kg ...
July 2, 2015

physics
A ladder (ℓL = 7.50 m) of weight WL = 350 N leans against a smooth vertical wall. The term "smooth" means that the wall can exert only a normal force directed perpendicular to the wall and cannot exert a frictional force parallel to it. A firefighter, whose ...
July 2, 2015

physics
A motorcyclist is traveling along a road and accelerates for 4.45 s to pass another cyclist. The angular acceleration of each wheel is +6.35 rad/s2, and, just after passing, the angular velocity of each wheel is +75.6 rad/s, where the plus signs indicate counterclockwise ...
June 28, 2015

physics
The drive propeller of a ship starts from rest and accelerates at 2.95 10-3 rad/s2 for 2.05 103 s. For the next 1.90 103 s the propeller rotates at a constant angular speed. Then it decelerates at 2.30 10-3 rad/s2 until it slows (without reversing direction) to an angular ...
June 28, 2015

physics
I keep on getting the second part wrong. Can you please tell me where I messed up? Thank you. The lead female character in the movie Diamonds Are Forever is standing at the edge of an offshore oil rig. As she fires the gun, she is driven back over the edge and into the sea. ...
June 26, 2015

Biology ( Ms.Sue help)
They can pass down either an A or B allele, which would mean their child could only be A, B, or AB. If the other parent is type O, the child's blood type will be the allele he/she got from the AB parent. A child can only be O if it inherits an O allele from BOTH parents.
June 25, 2015

physics
I have no idea. Please help. Thank you. The drawing shows a sulfur dioxide molecule. It consists of two oxygen atoms and a sulfur atom. A sulfur atom is twice as massive as an oxygen atom. Using this information and the data provided in the drawing, find (a) the x coordinate ...
June 25, 2015

physics
I have no way to solve this question. help me please The drawing shows a sulfur dioxide molecule. It consists of two oxygen atoms and a sulfur atom. A sulfur atom is twice as massive as an oxygen atom. Using this information and the data provided in the drawing, find (a) the x...
June 24, 2015

physics
A projectile of mass 1.000 kg is shot straight up with an initial speed of 23.0 m/s. (a) How high would it go if there were no air resistance? i got 26.99, which is correct (b) If the projectile rises to a maximum height of only 17.8 m, determine the magnitude of the average ...
June 21, 2015

physics
The drawing shows two boxes resting on frictionless ramps. One box is relatively light and sits on a steep ramp. The other box is heavier and rests on a ramp that is less steep. The boxes are released from rest at A and allowed to slide down the ramps. The two boxes have ...
June 21, 2015

physics
Two satellites, A and B, are in different circular orbits about the earth. The orbital speed of satellite A is thirty-four times that of satellite B. Find the ratio (TA/TB) of the periods of the satellites. Thank you!
June 21, 2015

physics
A 30-kg girl is bouncing on a trampoline. During a certain interval after she leaves the surface of the trampoline, her kinetic energy decreases to 205 J from 435 J. How high does she rise during this interval? Neglect air resistance.
June 21, 2015

physics
A 54.5-kg skateboarder starts out with a speed of 1.95 m/s. He does +80.0 J of work on himself by pushing with his feet against the ground. In addition, friction does -265 J of work on him. In both cases, the forces doing the work are nonconservative. The final speed of the ...
June 21, 2015

physics
A 50-kg box is being pushed a distance of 6.4 m across the floor by a force P with arrow whose magnitude is 154 N. The force P with arrow is parallel to the displacement of the box. The coefficient of kinetic friction is 0.24. Determine the work done on the box by each of the ...
June 21, 2015

math
less
June 15, 2015

Chemistry
Determine the entropy change when 1.80 mol of HBr(g) condenses at atmospheric pressure? I got that DeltaS fus = 12.922J/(k*mol) Delta S Vapour = 93.475J/(K*mol) the only thing I don't get is the entropy change when 1.80 mol of HBr(g) condenses at atmospheric pressure. How ...
May 27, 2015

Chemistry
what is the freezing point of an aqueous solution that boils at 102.1 C? Kf=1.86 Kb=0.512 102.1-100.0=2.1 2.1/0.512=4.10 4.10*1.86=7.62 C 7.62 C Is this correct?
May 22, 2015

L A/The Giver
The answer is C. Jonas escapes and is on the run with Gabriel. Falling action does mean when the story is calm, but it doesn't nessarly mean that. It is the ending of the story... What happened at the end.
May 20, 2015

Calculus
What is the derivative of tan(1-x)^(1/2)?
May 6, 2015

Language Arts
These are all wrong! The answers are not correct.
April 23, 2015

Math
Isn't 51 divisible by 3 and 17?
April 22, 2015

Math
Ohhhh! Thank you!
April 22, 2015

Math
I don't really understand that, doesn't b have a five in there?
April 22, 2015

Math
Without using a calculator, decide which of these numbers divide into 2^5 * 3^9 * 7^2 * 13^5 8 17^4 * 19 with no remainder. Explain how you know. a) 2^4 * 3^8 * 7^2 * 13^4 * 17^4 * b) 2^5 * 3^2 * 5 * 7^2* 17 c) 2^4 * 13^4 * 17^4 * 19^4 d) 2^2 * 3^5 * 7 * 13^3 * 17^2 * 19
April 22, 2015

Please Help!
ComeCacaPrimero is right is got 3/3!'😝😝
April 16, 2015

Life orientation
Factors that could threaten or limit core functions of the media
April 4, 2015

Math
So, my teacher wants me to sketch the graph of a system of inequalities but I'm not sure how. Can someone help me? Thank you! 3x + 2y < 6 x > 0 y > 0
March 12, 2015

AP Chem
Do i use Ka or Kb?
March 9, 2015

AP Chem
What is the ph of a .05 L solution containing .075 mol NH3 and 6.80 g of NH4+ when .025 L of 2 M is added to it? Kb= 1.8 x10^-5
March 9, 2015

AP CHEM LAB
How much .25 molar NAOH would you need to add to 50 mL of 2.85 molar HCl to reach the equivalence point?
March 3, 2015

Chemistry Equilibrium
1.15 g oh h2O (density 1.00 g/ml) is introduced into an empty 1.00 L container. The seled container is heated to 412 K and .150 moles of O2 (g) is present at equilibrium. A. Wrte the equilibrium expression for the reaction above. B. Calculate the equilibrium concentration (in ...
February 26, 2015

Science
A boy and girl sit on a seesaw of length 4m, balanced at its center. The girl sits at the far end and has a mass of 50kg. The boy is twice as heavy as the girl, and therefore sits midway between his end and the center. Then the girl is given a bag of oranges weighing 5kg, and ...
February 23, 2015

PLEASE CHEM
sorry this is in basic solution
February 14, 2015

PLEASE CHEM
wouldnt h2o be on the other side because you orignally have 2h20 on the products and one h20 in the reactants so cancelling them out would make one h20 on the products side
February 14, 2015

PLEASE CHEM
balance the redox reaction NO2^- + Ag^+ = NO3^- + Ag
February 14, 2015

algebra
Translate into algebraic exxpression one third of difference betwen 6 andp is added to 8
February 13, 2015

Algebra
translate the give fhrase into algebraic expresion 7 less than sum of 3 and x divided by 5
February 13, 2015

science
i dont know
February 12, 2015

Math
Directions: Find all solutions of the equation in the interval (0, 2pi) sin x/2=1-cosx
February 3, 2015

chemistry
C6H12 = 9O2 --> 6CO2 = 6H2O + 3,690 kJ *Personally Balanced* What quantity of heat is produced if 32g of cyclohexane react with 95 L of oxygen at STP? *My work so far is below* 95L*(1 mol O2/22.4L) = 4.2 mol O2 What would be the next motive?
January 21, 2015

social studies
i think idk
December 3, 2014

biology
which is true about the inside of a cell? -the inside of an animal cell contains structures that carry out specific jobs for the cell, but no water or molecules dissolved in water -the inside of an animal cell contains water, molecules dissolved in the water and structures ...
December 1, 2014

math
how i make triangular prism,the dimensions are 6 unit base and 6 unit height,but the entire prism has height of 15 unit
November 25, 2014

Math Help
The number y of daily fee golf facilities in the United States from 1995 to 2003 can be represented by the following model where t represents the year with t = 5 corresponding to 1995. y=4381+1883.6lnt 5=t=13 During which year did the number of daily fee golf facilities reach ...
November 12, 2014

chemistry
The reaction between sodium hydroxide and hydrobromic acid is represented in the equation below: OH- + H+ -> H2O A 62.5 mL sample of 1.86 M NaOH at 22.5 deg Celsius was mixed with 62.5 mL sample of 1.86 M of HBr at 22.5 deg Celsius in a coffee cup calorimeter. The ...
November 2, 2014

Organic Chemistry
Calculate the partition coefficient of caffeine in water/methylene chloride from the following data: 10.3 g/100 mL for methylene chloride and 2.04 g/100 mL for water. Using the same data a student follows our procedure and extracts the caffeine using 3 extractions of 7 mL of ...
October 31, 2014

Organic Chemistry
In a very controlled experiment, a student is sure that 0.500 grams of caffeine is dissolved in 125 mL of water. The student extracts the caffeine using a single extraction of 21 mL of methylene chloride. How much caffeine is in the methylene chloride? How much remains in the ...
October 31, 2014

Derivatives
Could you perhaps do one of the ones on the bottom that are not in fraction form, cause I have a hard time doing the ones that have cos,sin,sec, and tan in them.
October 22, 2014

Derivatives
Oh okayyyyyyyy, I see it now, thanks
October 22, 2014

Derivatives Help
..I'm not sure I understand
October 22, 2014

Derivatives
Can you help me find the derivative of these problems...Every time I try doing these I don't get the right answer. All of these are fractions; (x)/(2+x)= (x^2+3)/(x^3-2)= (2π)/(x^2-x)= These are not fractions; (3x^3/2 tanx)= (3x^1/2 sinx)= (4secx tanx)= (x^2 cotx)= (x...
October 22, 2014

english
no
October 9, 2014

english
I did read it! The article was about people from south america are illegally coming to america by passing the border of mexico to texas.Then it talks about solutions of making people stop coming and mini stories of people who illegaly did it
October 9, 2014

english
please give me an example please
October 9, 2014

english
lets say a article talks about crossing the border of mexico illegally. Maybe i could say this reminds me about going to a country bout on a airplane and then i would have to explain why i think this
October 9, 2014

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