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December 19, 2014

Posts by jessica


Total # Posts: 2,712

english writing
what does the word class means to you? Why or why not?
October 2, 2011

Chemistry
A mixture contains only CuCl2 and FeCl3. A 0.7391 g sample of the mixture is completely dissolved in water and treated with silver nitrate. if 86.91 mL of 0.1463 M silver nitrate soultion is needed to precipitate all the chloride as silver chloride, what is the weight percent ...
October 2, 2011

Chemistry
An aqueous solution with a density of 0.998 g/ml at 20 degrees Celsius is prepared by dissolving 12.8 mL of CH3CH2CH2OH (p=0.803 g/mL) in enough water to make 75.0 mL of solution calculate the percent (w/w), percent (w/v), parts per million, and molality?
October 2, 2011

Chemistry
The manufacture of ethanol (CH3CH2OH) yields diethyl ether ((C2H5)2O) as a by product. the complete combustion of a 1.005 g sample of the manufactured product yielded 1.963 g of carbon dioxide. what are the weight percents of ethanol and diethyl ether in the sample?
October 1, 2011

Chemistry
Aluminum metal and Iron(III) oxide react to give aluminum and iron metal. What is the maximum amount of Iron that can be obtained from a reaction mixture containing 2.5 grams of aluminum and 9.5 grams of Iron(III) oxide? What mass of excess reactant remains?
October 1, 2011

Chemistry
An aqueous solution with a density of 0.998 g/ml at 20 degrees Celsius is prepared by dissolving 12.8 mL of CH3CH2CH2OH (p=0.803 g/mL) in enough water to make 75.0 mL of solution calculate the molarity
October 1, 2011

History
The monroe doctrine was proclaimed in repose to revolution in____________. southern europe or latin america. I choose latin america
September 30, 2011

English
how to write a newspaper review?
September 29, 2011

english
Please tell me which of these two are Implicit statement and implicit premises or conclusions and please tell me the difference, I have quiz on this. Thanks! 1)Hilter rose to power because the Allies had crushed the German economy after workd war one. Therefore if the Allies ...
September 28, 2011

calculus
Find the slope of the curve at the indicated point. f(x)= abs(x) at a. x=2 b. x=-3 f(x)= abs(x-2) at a. x-1
September 28, 2011

history
i'm sorry it's suppose to be.... was the proposed capitol philadelphia
September 28, 2011

history
Before the change to a site on the potomac the was the proposed capitol philadelphia?
September 28, 2011

Math
The ratio of a rectangle is 3:4, its perimeter is 32in. What are the lengths of the sides?
September 28, 2011

trig
Find a cofunction with the same value as sin 19 degrees
September 27, 2011

help please
The pattern of learning that is strongest is called : A.learning modality B.intelligence activity C.learning style D.both a&c I got c what do you think?
September 25, 2011

help please
A is correct answer or not?
September 25, 2011

United States Government
Which of the following would NOT be advocated by modern conservatism? a. Free markets b. Small governments c. Laissez-faire economics d. Welfare programs e. Reliance on tradition I would say Reliance on tradition. what say?
September 24, 2011

Algebra II
I need to write a polynomial in SIMPLEST FORM having roots 2,-2 and 4. I have to gt rid of the parentheses by multiplying everything out.Did I do it correctly? Also, someone said yes yesterday , but I'm wondering if it is suppose to have anything else done to it-it seems ...
September 23, 2011

algebra II
I need to write a polynomial in SIMPLEST FORM having roots 2,-2 and 4. I have to gt rid of the parentheses by multiplying everything out.Did I do it correctly? Also, someone said yes, but I'm wondering if it suppose to have anything else done to it-it seems way too easy ...
September 22, 2011

chemistry
analyze and explain the buffer system in buffered aspirin(carboxyic acid)
September 22, 2011

Algebra II
I need to write a polynomial in SIMPLEST FORM having roots 2,-2 and 4. I have to gt rid of the parentheses by multiplying everything out.Did I do it correctly? Also, someone said yes, but I'm wondering if it suppose to have anything else done to it-it seems way too easy ...
September 22, 2011

Algebra II-Please recheck
Is that in simplest form or am I suppose to do something else with it? It seems too easy-
September 22, 2011

Algebra II
the first step should be x^2+2x-2x-4 = x^2-4(I forgot to put the (-4)
September 22, 2011

Algebra II
I need to write a polynomial in SIMPLEST FORM having roots 2,-2 and 4. I have to gt rid of the parentheses by multiplying everything out.Did I do it correctly? (x-2)(x+2)(x-4)original problem 1.x^2 + 2x-2x=x^2-4) 2. (x^2-4)(x-4) 3. x^3-4x^2-4x+16=0
September 22, 2011

government
first result was this page XD
September 20, 2011

government
Do voter ID laws conflict with anything in the Constitution besides, situationally, the 24th Amendment?
September 20, 2011

math
15 1/36 - 1 1/9+3 1/3
September 19, 2011

english
Hi, I need help finding these 3 questions please: I couldnt find them, thanks!!(1) what are the ethical concerns of embryonic stem cell research? (2) what are the benefits of related to adult stem cell reseach? (3) who are the voices in our society who will decide on how the ...
September 18, 2011

Alg
.Write an algebraic expressoin for4 times the sum of q and p HELPPP PLZZZ :)
September 9, 2011

geometry
if n is a prime number than n +1 is not . True or false
September 8, 2011

geometry
if n is a prime number than n +1 is not . True or false
September 8, 2011

physics
A car is driven east for a distance of 41 km, then north for 21 km, and then in a direction 30° east of north for 25 km. Determine (a) the magnitude (in km) of the car's total displacement from its starting point and (b) the angle (from east) of the car's total ...
September 8, 2011

PHYSICS
its going to be 58x10^2 or 5.8x10^3
September 8, 2011

Reading
All of the little things. Like where the story takes place, when the time frame is, what the characters look like.. etc.
September 8, 2011

English
What all should I include in my intro paragraph for a 5 paragraph essay? My topic is about how people take eyesight for granted.
September 8, 2011

English
winter and carnival need to be capitalized because it is the name of a specific carnival.
September 8, 2011

Chemistry
They are both the same thing?
September 8, 2011

Math linear functions
The line through (-10, 2) which is perpendicular to the line y=8x+9 has slope -1/8 and y-intercept __?
September 7, 2011

Math
An equation of the line through (6, -8) which is parallel to the line −8x−9y=6 is __?
September 7, 2011

Math
An equation of a line through (-10, -6) which is perpendicular to the line −5x+8y=−1 is __?
September 7, 2011

college math
given the bar graph below create a grouped frequency distribution. the graph is numbered up the side by twos to 22, along the bottom there are countries that go up to a number. united states up to 10 argentina up to 22 united kingdom up to just under the ten phillipines is ...
September 6, 2011

History
Thanks so much Ms. Sue.This is what I have so far can you tell me what you think and if you have any more ideas that i can add to make it better would be great. The French and Indian War left Great Britain in much debt. To pay off war debt and cover the cost of administering ...
September 6, 2011

History
Was there a single event that caused the Revolutionary War and was that war avoidable?
September 6, 2011

physics
A traditional unit of length in Japan is the ken (1 ken = 1.97 m). What is the volume of a cylindrical water tank of height 7.17 kens and radius 6.21 kens in cubic kens
September 1, 2011

physics
it didnt work
September 1, 2011

physics
Earth has a mass of 5.98 × 1024 kg. The average mass of the atoms that make up Earth is 40 u. How many atoms are there in Earth?
September 1, 2011

physics
how am i suppose to know how much the mistaken tourist believe she needs?
September 1, 2011

physics
A tourist purchases a car in England and ships it home to the United States. The car sticker advertised that the car's fuel consumption was at the rate of 40 miles per gallon on the open road. The tourist does not realize that the U.K. gallon differs from the U.S. gallon: ...
September 1, 2011

physics
Gold, which has a density of 19.32 g/cm3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. (a) If a sample of gold with a mass of 8.464 g, is pressed into a leaf of 5.036 ìm thickness, what is the area (in m2) of the leaf? (b...
September 1, 2011

chem
because of the electrons they share
September 1, 2011

physics
A person on a diet might lose 1.5 kg per week. Express the mass loss rate in milligrams per second, as if the dieter could sense the second-by-second loss
September 1, 2011

geometry
@ Ms.Sue 6cm
August 31, 2011

geometry
a circle has a circumference of 6c. Find the diametermof the circle
August 31, 2011

geometry
rectangles length is 3 more than twice its width and has a perimeter of 30 centimeters find the dimensions
August 31, 2011

Physics
Two point charges, Q1 = -7.0 and Q2 = 2.0 are located between two oppositely charged parallel plates, as shown in the figure . The two charges are separated by a distance of x = 0.33m . Assume that the electric field produced by the charged plates is uniform and equal to E = 6...
August 29, 2011

chemistry
B-Mercaptoethanol is available as a 98% (w/w) solution, sp gr 1.114. What voulume is needed to prepare 0.100 L of a 50.0 mM solution. fw=78.13
August 28, 2011

Chemistry
given 6.7 grams of sodium acetate and 6.7 g of magnesium acetate, calculate the number of moles of acetate in sodium acetate. calculate the number of moles of acetate in magnesium acetate.
August 28, 2011

chemistry
if there are 8.0 mg of Na+ contaminant per liter of water sample, calculate the number of moles of Na+ per liter. Calculate the weight of Na+ in a 1L sample of water that contains 1.00 x 10^2 umol Na+/L
August 28, 2011

geometry
Angle C is an inscribed angle of circle P. Angle C measures (-3x - 6)° and arc AB measures (-4x)° . Find x. circle P with points A, B, and C on the circle and inscribed angle A C B drawn Question 4 answers -2 -4 -6 -8
August 26, 2011

Chem
Well I got Iron(3)hydroxide as a solid and NaNo3 as aqueous..... Not sure if that is right but that's my best guess as of right now....
August 24, 2011

Chem
Solid ferric nitrate and aqueous sodium hydroxide are combined with water in a test tube. A brown to red precipitate forms in the test tube. Write a complete chemical reaction that accounts for the formation of the solid.
August 24, 2011

Chemistry
A stock aqueous solution contains 348.29 grams of NaCl per 1.000L. 68.00mLs of water is added to 10.00mLs of the stock solution. What is the molarity of the dilution???
August 24, 2011

geometry
rectangles length is 3 more than twice its width and has a perimeter of 30 centimeters find the dimensions
August 21, 2011

geometry
Yeah it can. Point J is the mid-point already figured it out..
August 21, 2011

geometry
suppose point J is between points H and J. Let HJ=2x+5,JK=3x-7,and KH=18. Find the length
August 21, 2011

anatomy
where are the shoulders relative to these parts? 1. throat (inferior) 2. hip (superior) 3. ears (inferior) 4. hands (superior) 5. eyes (inferior) will someone please take a look at my answers and tell my if i am right
August 19, 2011

math
In Philadelphia the number of hours of daylight on day t (where t is the number of days after Jan. 1) is modeled by the function L(t)= 12+2.83sin(2pi/365(t-365)) A) Which days of the year have about 10 hours of daylight? B) Which days of the year have more than 10 hours of ...
August 13, 2011

calc
sin(4x)/sin(x)=4cos(x)cos(x) verify the identity
August 13, 2011

calculus
Consider a gun fired from a tower 96ft above the ground. The angle of elevation of the gun is 60 degrees, and its muzzle velocity is 1600 ft/sec (also gravity in this equation is 32 ft/sec^2). a)When does the bullet hit the ground? b)Write a parametric equation that models the...
August 13, 2011

physical science 101
A) h=0.5gt^2 40=0.5(9.8)(t^2) 40=4.9t^2 t^2=8.16 t=2.86s
August 11, 2011

COM155
Write two paragraphs about how interest rates affect our purchasing decisions. High interest rates make us stop and think, do we need this item? Is it a necessity? When interest rates are high people tend to finance things less. Why pay a lot in interest when you can just ...
August 9, 2011

History
The answer to the first question is TRUE! I hope i was able to help you!!!
August 9, 2011

health
what are possible impact of not logging off or exit from the patient's record
July 30, 2011

history
what new ideas in technology occurred during the Greco-Roman civilization?
July 29, 2011

Computers
Give an example of where you might use Word, Excel, Access, and Powerpoint other than computer class?
July 29, 2011

Math
find a quadratic equation having 3+root3 and 3-root3
July 26, 2011

math
A library crew can shelve books in six hours. Another crew can do the job in four hours. If the first crew begins and is joined by the second crew one hour later, how many hours will it take to finish the job?
July 26, 2011

math
find a quadratic function whose graph has a max of 25 and x-intercepts of -3 and 2.
July 26, 2011

math
when graphing greater than, less than, etc. do you shade and if you do which way do I shade?
July 26, 2011

math
whats interval notation?
July 26, 2011

Bio
A biologist marked a cell that he knew was about to undergo meiosis. A short time later he observed the four cells produced by the original marked cell; their chromosome numbers were 17, 17, 18, and 16. He knew these numbers indicated that something abnormal had occurred ...
July 24, 2011

independent clause
Identify the : I stood at the window, but I didn't see him.
July 24, 2011

HCA/210
For my final project, I have to develop a unique proposal that describes a new health care system. My question is, is this assignment just referring to the health insurance aspect of the health care system?
July 11, 2011

Chem
a blue solution of copper(II) sulfate is mixed with a colerless solution of sodium phosphate and a blue percipitate is formed. Using solubility rules predict the formula of the percipitate
July 6, 2011

health
compare the HITECH requirements with the goals and strategies of the original strategic framework
July 5, 2011

math
This is the problem given: The side of a hill faces due south and is inclined to the horizontal at an angle alpha. A straight railway upon it is inclined at an angle beta to the horizontal. If the bearing of the railway is gamma east of north, show that cos(gamma) = cot(alpha)...
July 5, 2011

Chem
10 grams of sodium chloride is treated with excess silver nitrate AgNO3 + NaCl =AgCl +NaNO3.. HOW MUCH IS PERCIPITATED
July 4, 2011

Accounting
you have just won the National Publisher's Sweepstakes. You have two options, you can receive ten, $500,000 semiannual payments starting today, or you can take your winnings in a lump-sum payment now based on 7% annual interest rate. Determine the equivalent lump-sum ...
July 4, 2011

grammar
interrogative
July 3, 2011

History
THANK YOU =)
July 3, 2011

History
Hello Any help would be greatful...TIA 1..What is the Agrarian Myth According from Hofstater? 2. When did the Myth 1st appear and whom was responsible for it? 3.Was there ever a time in America History when conditions corresponded to the myth? Thanks
July 3, 2011

Science
Part 1 Which of the following is a redox reaction? a. H2CO3 (aq) + 2NH3 (aq) → 2NH4+ (aq) + CO32- (aq) b. 2VO3- (aq) + Zn (s) + 8H+ (aq) → 2VO2+ (aq) + Zn2+ (aq) + 4H2O (l) d. Zn(NO) (aq) + 2NaOH (aq) → Zn(OH) (s) + 2NaNO (aq) part 2 For the redox reaction in...
June 30, 2011

Chemistry
The reaction for the metabolism of sucrose, C12H22O11, is the same as for its combustion in oxygen to yield CO2(g) and H2O(l). The standard heat of formation of sucrose is -2230 kJ mol-1. Based upon data in Table 6.2 and problem 6.75 the amount of energy (in kJ) released by ...
June 29, 2011

Chemistry
Calculate the concentrations of each of the ions in 0.25 M Fe(NO3)2. a) [Fe2+], M b) [NO3-], M
June 27, 2011

science
Which of the following best describes plasma? A) a group of super cooled particles with very low kinetic energy B) an ionized group of particles with low kinetic energy C) a gas that becomes a solid without first becoming a liquid D)an electrically charged gas with very high ...
June 23, 2011

statistics
Build a 95% confidence interval for the mean of the population from the given sample data. Assume that the population has a normal distribution. 16.4, 15.7, 16.2, 15.8 17.1 15.8, 15.9, 16.0, 16.4 15.0
June 22, 2011

statistics
Use the margin of error E = $10, confidence level of 99%, and ó = $40 to find the minimum sample size needed to estimate an unknown population mean, .ì
June 22, 2011

statistics
The weights of certain machine components are normally distributed with a mean of 9.75g and a standard deviation of 0.08g. Find the weights that separate the top 5% and the bottom 5%.
June 22, 2011

statistics
A bank’s loan officer rates applicants for credit. The ratings are normally distributed with a mean of 175 and a standard deviation of 15. If an applicant is randomly selected, find the probability of a rating that is between 150 and 200.
June 22, 2011

statistics
A final exam in Math 157 is normally distributed and has a mean of 75 with a standard deviation of 12. If 36 students are randomly selected, find the probability that the mean of their test scores is greater than 70.
June 22, 2011

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