Monday
May 25, 2015

Posts by molly


Total # Posts: 538

History
The revolt in Hungary (1956), the demonstrations in Czechoslovakia(1968), and the formation of Solidarity in Poland (1980's) are similar in that they
May 1, 2011

s.s (social studies)
IS THIS RIGHT ? There comes a time in history,when the Americans must break away from england and become a separate nation , equal with other nations like god planned all along.We care about what the rest of the world thinks,therefore we will clarify why we are motivated to ...
April 26, 2011

s.s (social studies)
i dont get it
April 26, 2011

s.s (social studies)
can you help me translate the declaration of independence? first passage: When in the course of human events it becomes necessary for one people to dissolve the political bands which have connected them with another, and to assume among the powers of the earth, the separate ...
April 26, 2011

Chemistry
So basically for the first 3 answers (Part (A)(B)(C)): (A)and(B) - the concentrations would be equal since the mole ratio is equal and Q = K at equilibrium. (C) - the rate of both reactions would be equal also, as Q = k, right? (D)(1) - If the volume is increased at constant ...
April 25, 2011

Chemistry
PCl5 --> PCl3 + Cl2 (Kp = 630 at 546 K) A system is prepared by placing equimolar amounts of the three gases shown in the equation above in a suitable rigid container held at constant volume. Equilibrium is established at 546 K. (A) When equilibrium is established, how does...
April 25, 2011

Life orientation
Severally improve the worlds environmental problems,on the other hand,if the current way the worlds environmental problem is bing handled.
April 8, 2011

Math
Complete the square for this conic section in standard form: x^2+y^2-6x+4y-12=0
April 3, 2011

science
what kind of heat transfer causes earth's major wind patterns
March 15, 2011

CALCULUS
hi what is the derivativ of [-18(x^2)]/[(1+2(X^3))^2] ?? thanks!~
March 10, 2011

Physics
On a cold winter morning, a child sits on a sled resting on smooth ice. When the 9.20 kg sled is pulled with a horizontal force of 40.0 N, it begins to move with an acceleration of 2.50 m/s^2. The 23.0 kg child accelerates too, but with a smaller acceleration than that of the ...
March 3, 2011

Abstract Algebra
Let A= -{-1}, that is, the set of all real numbers except -1. Define an operation on A by a*b=a+b+ab (usual addition and multiplication in R) a) Show that * is closed on A b) show that * is associative c) Find the identity element for * and verify that it is the identity d) ...
February 22, 2011

COLLEGE ALGEBRA
Suppose that R is the set of real numbers. Let f: R--> R be defined by f(x)= mx+b, where m and b are real numbers and m is nonzero. Prove that f is a bijection.
February 22, 2011

Math
Jonathan can type a 20 page document in 40 minutes, Susan can type it in 30 minutes, and Jack can type it in 24 minutes. Working together, how much time will it take them to type the same document?
February 15, 2011

US History
How did Hitler respond to Germany’s obligations under the Treaty of Versailles when he became Germany’s leader?
February 10, 2011

Abstract Algebra
Let f:A->B where A and B are nonempty. Prove that f(S1 U S2) = f(S1) U f(S2)
February 5, 2011

Algebra
The slope formula is Y2-Y1/X2-X1. So it would be 1-2/2+2 which equals -1/4
February 5, 2011

childcare
OMG u guys aren't helping I'm gonna save all my answers and post them when I'm done
February 1, 2011

science
what do you want to know?
January 31, 2011

geometry
If the perimeter of a particular square is 2011 inches, what is the area of the square, in square inches? Express your answer in decimal form to the nearest hundredth.
January 25, 2011

College Algebra
Al gives 1/2 of his marbles to bev. bev gives 1/3 of these to carl. carl gives 1/4 of these to dani. If dani was given four marbles, how many did al have originally?
January 23, 2011

algebra
Nicole can jog to work in of an hour. When she rides her bike, it takes her of an hour. If she rides miles per hour faster than she jogs, how far away is her work? NEED HELP FAST
January 21, 2011

Math
After a recent series of home improvements, four couples were having a dinner party to discuss the additions to their homes. Mike had not recently had a new bathroom. Lorraine had not yet done her kitchen, but perhaps would update it next. Chris, who is married to Renée...
January 16, 2011

algebra
-13=3(x+2)-10
January 13, 2011

Chem
I don't understand what h is
January 13, 2011

Chem
What is the energy (e) of electromagnetic radiation having a frequency of 6.32 x 10^20 s^-1?
January 13, 2011

adult education
use lattice multiplication to find the prduct of 124 x 56
December 16, 2010

accounting
please help now!!!!!
December 10, 2010

accounting
This is the question: "Use page 3 of the journal. Jornalize and post the adjusting entries." Can you tell me how to do that?
December 10, 2010

science
ive been trying to find a report for 5th grade greenhouse effect science. how can i type it to find it?
December 9, 2010

English(how is it?)
Ya you do this by eating some bananas, there ya go
December 1, 2010

Math
period = 2ð/(ð/12) = 24 months amplitude = 4000 vertical displacement = 20 000
December 1, 2010

Math
The population size, P, of owls (predators) in a certain region can be modelled by the function P(t) = 1000 + 100 sin (3.14t/12), where t represents the time in months. The population size, p, of mice (prey) in the same region is given by p(t) = 20 000 + 4000 cos (3.14t/12). ...
December 1, 2010

PHYSICS!!!
By how many decibels does the sound intensity from a point source decrease if you increase the distance to it by a factor 6?
December 1, 2010

PYSCIS!!!!
By how many decibels does the sound intensity from a point source decrease if you increase the distance to it by a factor 6?
December 1, 2010

Geometry
I saw it after I typed in my response to avery. Thank you very much :)
November 22, 2010

Geometry
Could you please explain why the answer is no?
November 22, 2010

Geometry
Is it possible for a triangle to have sides with the following lengths: 5, 9, 15?
November 22, 2010

college physics
A mass of 1 kg is hanging from a spring with a spring constant of 3 N/m. At a distance of 0.2 m below the equilibrium it has a velocity of 1 m/s in the upward direction. What is the amplitude of the oscillation?
November 21, 2010

College Chemistry
Calculate the vapor pressure of a solution of 0.39 mol of cholesterol in 5.4 mol of toluene at 32oC. Pure toluene has a vapor pressure of 41 torr at 32oC.
November 19, 2010

College Chemistry
How much ice can be melted at 0oC by the condensation of 1.0 kg of steam at 100.oC? (ΔHfus of ice = 6.01 kJ/mol; ΔHvap of water = 40.7 kJ/mol)
November 19, 2010

Math
Four balls are simultaneously picked at random from a jar containing 2 red balls, 2 green balls, and 6 yellow balls. What is the probability that exactly two of the selected balls will be red?
November 15, 2010

math
To find the amount of the discount, you multiply the price by the percentage out of 100. So, 35x.25=8.75 This is the same as (X/35) x (25/100) So you are getting 8.75 off. And the price you pay is.. 35-8.75 = $26.25
November 15, 2010

chemistry
What reagent would allow you to distinguish between FeCl3 and PbCl2? (As if using an analysis scheme)
November 15, 2010

Chemistry
What reagent would allow you to distinguish between BaS and NiSO4? (As if using an analysis scheme)
November 15, 2010

Chemistry
What reagent would allow you to distinguish between AgNO3 and MNSO4? (As if using an analysis scheme)
November 15, 2010

Chemistry
What reagent would allow you to distinguish between AgNO3 and MNSO4? (As if using an analysis scheme)
November 15, 2010

CHEM
What reactions does Br- have, ones that would distinguish it as a anion? As in a anion analysis scheme?
November 15, 2010

Chem
Why is BaSO4 insoluble in HNO3?
November 15, 2010

6th grade
What is the volume of a chest that is 20 inches by 10 inches by seven and one tenth inches?
November 8, 2010

Physics Help!!!
With the energy needed to warm up some amount of water from 26°C to 44°C, how high could you lift it?
November 8, 2010

Physics Help!!! solids and fluids
During a transatlantic flight, you drink a bottle of water and tightly close its lid again. Back on the ground during taxiing to the terminal, you notice that the thin plastic bottle is crushed, and you eyeball it to be only about 80 percent of its original volume (the photo ...
November 8, 2010

Chemistry
How can you determine which of any two halogens is more active?
November 7, 2010

Spanish 1
B and C
November 7, 2010

Physics HELP!!! potential energy
Two identical metal plates with small holes are aligned a distance L=6.7 cm apart. They have a potential difference of 131 Volts. An electron can enter through the hole in the negative plate and exit through the hole in the positive plate. If it enters with a velocity of 3290 ...
November 3, 2010

Physics HELP!!! Potentials and Fields
Two identical metal plates with small holes are aligned a distance L=6.7 cm apart. They have a potential difference of 131 Volts. An electron can enter through the hole in the negative plate and exit through the hole in the positive plate. If it enters with a velocity of 3290 ...
November 1, 2010

Physics HELP!!!
A car (mass 920 kg) drives up a hill (height 328 m) in 143 seconds. At the bottom of the hill, it has a speed of 24 m/s, but at the top, it has slowed down to 14 m/s. Neglecting friction, what is the average engine power
October 31, 2010

Physics HELP!!!
A car (mass 920 kg) drives up a hill (height 328 m) in 143 seconds. At the bottom of the hill, it has a speed of 24 m/s, but at the top, it has slowed down to 14 m/s. Neglecting friction, what is the average engine power
October 31, 2010

Physics
So would it be 1/2*2.6^2/30
October 29, 2010

Physics
A flywheel has a moment of inertia of 2.6 kg·m2. What is the average power needed to spin it up from rest to an angular velocity of 100 rad/s in 30 seconds?
October 29, 2010

physics:energy
Okay I got it thanks for the help.
October 27, 2010

physics:energy
watts wouldn't be the units correct. My answer is 1456.785
October 27, 2010

physics:energy
How much power is needed to push a box (mass 27 kg) over a surface (coefficient of friction μk=0.5) with a velocity of 1.1 m/s?
October 27, 2010

Physics: energy
Thank you
October 27, 2010

Chemistry
How is the solubility of a solid affected by temperature?
October 26, 2010

math
Let C(q) represent the cost, R(q) the revenue, and π(q) the total profit, in dollars, of producing q items. a) If C′(67) = 65 and R′(67) = 86, approximately how much profit is earned by item number 68? b) If C′(149) = 120 and R′(149) = 98, ...
October 8, 2010

physics
thanks, i got them all except for the first one.
October 4, 2010

physics
true or false If a net force acts on an object, the object's speed will change. An object's velocity will change if a net force acts on the object. If two object have the same acceleration, they are under the influence of equal forces. The net force which acts on an ...
October 4, 2010

English I
What is feild or Scope? I am writing a book report on Lord of the Fies by William Golding.
September 28, 2010

5th grade math
16-(3x2)x2 16-(6) x2 16-(12) 4 4is the answer and in middle school when u have parensis u dont need to put an x before the nest multipliction number it means times already
September 28, 2010

8th grade
$1 for every 4 oz 12/4
September 26, 2010

3rd grade
they don't really learn algebra they just have a box where a middle or high school student would have a variable
September 22, 2010

Physical Science
thank you
September 21, 2010

Physical Science
If you did it wasn't for me :)
September 21, 2010

Physical Science
Need help please. the once with the ( ) is my answer but i am not sure if it right. Thanks for your help. 15. If the distance from a converging lens to the object is less than the focal length of the lens, the image will be A. real, inverted, and larger than the object. (B). ...
September 21, 2010

4th grade
My mom says that the glaciers are melting because of global warming.
September 14, 2010

math
1+j=2(2j+1)
September 8, 2010

English
Thank you very much.
July 1, 2010

English
Obviously, the police will use force if you do not cooperate. Is this grammatically correct? I need to write a sentence to show how a comma should be used after introductory words or groups of words.
July 1, 2010

math
The annual Salary of an electrical engineer is given in terms of the years of experience by the table below. Find the equation of linear regression for the above data and obtain the expected salary for an engineer with 45 years of experience. Round to the nearest $100. x y 2 ...
June 19, 2010

math
A test is composed of six multiple choice questions where each question has 4 choices. If the answer choices for each question are equally likely, find the probability of answering 3 OR 4 questions correctly. 0.131836 0.032959 0.004639 0.164795
June 19, 2010

algebra
Solve: 4 sqrt (x) = 8 + 2 sqrt (x) a) (-4) b) (16) c) none d) (4) c
June 18, 2010

math
simplify cot(-theta)tan(theta)
June 7, 2010

Math
FiberType HighCalorie LowCalori Totals High Fiber 18 4 22 Medium Fiber 23 6 29 Low Fiber 12 21 33 Totals 53 31 84 3. What is the probability that a cereal would both high calorie and high fiber? In other words, what is P(high calorie and high fiber)? 4. What is the probability...
May 25, 2010

statistics
Use this table to answer the questions. Height (in inches) Frequency 50-52 5 53-55 8 56-58 12 59-61 13 62-64 11 1. Identify the class width. 2. Identify the midpoint of the first class. 3. Identify the class boundaries of the first class. 4. Give the relative frequency for ...
May 19, 2010

algebra
I think this is somewhat how you do it. FOIL: (X+4)(X-4) =x^2-4x+4x-16 that simplified is = x^2-16 etc. but idk if i am remotely close
May 17, 2010

Drug Abuse
Well the moods they get it can effect people around them It can lead to stealing money to buy more drugs and that can hurt the family because then they will lie to cover it up.
May 16, 2010

Chemistry
What is the equilibrium constant for the reaction: HCOOH(aq)+ OH (aq) <--> HCOO(aq)+ H2O(l) Ka= 1.7 * 10^-4 Kb for the conjugate base= 4.9 * 10^-11 Thank you!
May 10, 2010

algebra
what is the solution of the following system of equations? 2y + 3x = 8 y = 1/2x a)(2,3) b)(1,2) c)(3,2) d)(2,1) what is the solution if the following system of equations? y = 2x + 10 3y = -4x a)(-3,4) b)(4,-3) c)(5,1) d)(1,5) Thanks you
April 28, 2010

math
what is the solution of the following system of equations? y = -2/3x y = 1 a) (-2,3) b) (1,-2/3) c) (-3/2,1) d) (1,-3)
April 28, 2010

Algebra
what is the solution of the following system of equations? 2y - x = 8 y = 2x + 1 a) (5,2) b) ((1,2) c) (2,1) d) (2,5) what is the solution of the following system of equations? y = 0 x = y + 2 a) (2,1) b) (0,2) c) (1,2) d) (2,0) Thanks, molly
April 28, 2010

Chemistry
Assign oxidation numbers to all species in the redox reactions below. Identify the oxidizing and reducing agents. 1. Fe(OH)2 (s) + CrO42- (aq) → Fe2O3(s) + Cr(OH)4-(aq) (basic)
April 27, 2010

biology
yes.they do
April 15, 2010

chemistry check my work
C7H6O3+CH3OH→C8H8O3+H2O In any experiment, 1.50g of salicyclic acid is reacted with 11.20g of methanol. The yield of methyl salicylate, C8H8O3, is 1.31g. What is the percent yield? percent is 77.l1% is this correct?
April 15, 2010

Chemistry
I am still getting the same answer
April 14, 2010

Chemistry
C7H6O3+CH3OH→C8H8O3+H2O In any experiment, 1.50g of salicyclic acid is reacted with 11.20g of methanol. The yield of methyl salicylate, C8H8O3, is 1.31g. What is the percent yield? From my understanding the equation is already balanced, correct? My answer: 26.7%, is this...
April 14, 2010

Chemistry
From my understanding the equation is already balanced, correct? My answer: 26.7%, is this correct? Work: (11.20gCH3OH)(1 mol CH3OH)/32.05gCH3OH=0.3495gCH3OH 0.3495g/1.31g= 26.68%
April 14, 2010

Chemistry
C7H6O3+CH3OH→C8H8O3+H2O In any experiment, 1.50g of salicyclic acid is reacted with 11.20g of methanol. The yield of methyl salicylate, C8H8O3, is 1.31g. What is the percent yield?
April 14, 2010

chemistry
how many moles are in a 65L sample of chlorine gas at 10degrees Celcius?
March 11, 2010

8th grade
what were two goals of american diplomacy in the 1930s?
March 8, 2010

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