Friday
August 22, 2014

Posts by Tiffany


Total # Posts: 796

Physics
Work of 700 J is done by stirring an insulated beaker containing 110 g of water. (a) What is the change in the internal energy of the system? J (b) What is the change in the temperature of the water? °C
March 30, 2012

Physics
How much heat must be added to 30 g of water at an initial temperature of 62°C to completely convert the 100°C water to steam?
March 30, 2012

Chemistry
What about the iron (II) oxide? and the KOH?
March 25, 2012

Chemistry
I will do an experiment that includes 4 grams of aluminum hydroxide and iron (III) oxide mixture, where 75% of it is Al(OH)3, and 15 ml of water and 25 ml of 2M KOH will be added and then boiled so that the Al(OH)3 dissolves. It will be filtered and then sulfuric acid will be ...
March 25, 2012

calculus
4. A particle starts at the point (5, 0) at t = 0 and moves along the x-axis in such a way that at time t > 0 the velocity is given by v(t)=t/(1+t^2) a. Determine the maximum velocity attained by the particle. Justify your answer. b. Determine the position of the particle ...
March 25, 2012

calculus
1. A conical reservoir has a depth of 24 feet and a circular top of radius 12 feet. It is being filled so that the depth of water is increasing at a constant rate of 4 feet per hour. Determine the rate in cubic feet per hour at which water is entering the reservoir when the ...
March 24, 2012

Understanding psychology eighth edition
verbal skills and muscular coordination have been observed to impruove women when
March 14, 2012

Spanish-SRAJMcGin please check
Could Sra JMcGin please check my answers to these questions if she has time? Thank you
March 13, 2012

Spanish-3rd question
I know what it means in English-I was wondering if it was correct in Spanish.
March 13, 2012

Spanish-3rd question
Thank you again for checking these-I couldn't number them or put question marks in front because jishka wouldn't accept them
March 13, 2012

Spanish-3rd question
Cuáles son de espectáculo que te gusta? El circo es el espectáculo que me gusta.
March 13, 2012

Spanish-2nd answer
I was wondering if they were correct in Spanish-I know what they mean in Englsih-I wrote the answers.
March 13, 2012

Spanish-2nd answer
¿Qué hace los actores en la ópera de teatro? Los actores juegan unos papeles en la obra de teatro. ¿Qué pasa hacer la semana próxima? Voy a la escuela la semana próxima ¿Qué hiciste la semana pasada? Hice mi tarea ...
March 13, 2012

Spanish
I have to post the questions separately with my answers or they won't accept them-I'm really sorry it keeps saying URL so I will have multiple listings Thank you for checking
March 13, 2012

Spanish
Please check this Cuáles son algunos comidas típicos de Mexico? Algunos comidas típicos de Mexico son tacos, y enchiladas y frijoles.
March 13, 2012

Spanish-Plase check
Thank you for responding-these negatives still really confuse me but thank you so much for responding
March 12, 2012

Spanish-Plase check
Thank you I appreciate it
March 12, 2012

Spanish-Plase check
I couldn't number them-it wouldn't take that way so I deleted the numbering thank you for checking
March 12, 2012

Spanish-Plase check
I had to make some negative sentences. Please check Thank you No tengo nada que hacer. No bebo nunca el batido. No bailo nunca. No hablo nunca francés. Tampoco hablo el alemán No compro ninguno. No quiero comer nada No quiero nunca contestar en la clase. Nadie ...
March 12, 2012

calculus
Find the area of the region bounded by the graph of y^3=x^3 and the chord joining the points (-1, 1) and (8,4)
March 11, 2012

calculus
Which of the following are antiderivatives of f(x)=sinxcosx? I f(x)=(sin^2* x)/2 II f(x)=(cos^2* x)/2 III f(x)=-cos(2x)/4
March 11, 2012

Spanish
Thank you
March 11, 2012

Spanish
I had to answer the questions in the negative please check 1.Hay alguien en la puerta? No, no hay nadie en la puerta. 2. Hay algo en la mesa? No, no hay nada en la mesa.
March 11, 2012

math
how do you make 87 cents with 6 coins none of which are half dollars
March 1, 2012

Chemistry
The specific heat of solid copper is 0.385 J/g*C. What thermal energy change occurs when the temperature of a 40.10g sample of copper is cooled from 42.9C to 10.0C? Be sure to give you answer the proper sign. I know this is part of the answer which (42.9-10.0)*40.10*0.385=508 ...
February 27, 2012

Chemistry
The specific heat of solid copper is 0.385 J/g*C. What thermal energy change occurs when the temperature of a 40.10g sample of copper is cooled from 42.9C to 10.0C? Be sure to give you answer the proper sign. I know this is part of the answer which (42.9-10.0)*40.10*0.385=508 ...
February 27, 2012

math
how do you format hours/day-percentage of time spent during an 8 hour work day ?
February 24, 2012

Chemistry
A compound containing only C, H, and O was extracted from the bark of the sassafras tree. The combustion of 36.3mg produced 98.6 of CO2 and 20.2mg of H2O. The molar mass of the compound was 162 g/mol. Determine its empirical and molecular formulas
February 19, 2012

Chemistry
A compound containing only C, H, and O was extracted from the bark of the sassafras tree. The combustion of 36.3mg produced 98.6 of CO2 and 20.2mg of H2O. The molar mass of the compound was 162 g/mol. Determine its empirical and molecular formulas
February 19, 2012

pre-calculus
What is the domain of (x+2)/(x-2)?
February 15, 2012

Philosophy: Introduction to Logic
1.) (L=N) > C 2.) (L=N) v (P>~E) 3.) ~E > C 4.) ~C /~P
February 13, 2012

statistics
Assume that the population of heights of female college students is approximately normally distributed with mean m of 66 inches and standard deviation s of 4.00 inches. Show all work. (A) Find the proportion of female college students whose height is greater than 65 inches. (...
February 12, 2012

spanish
In the following sentences, change the position of the reflexive pronouns so that sentences retain their meaning. Have the correct account punctuation and accentuation. 1. Ellos vienen a despedirse esta noche 2. Daniel se esta afeitando 3. Patricia va a ponrse muy contenta. 4...
February 8, 2012

Chemistry
Write and balance equation for the complete combustion of decane, C10H22
February 8, 2012

Physics
A freight train has a mass of 1.7 107 kg. If the locomotive can exert a constant pull of 7.6 105 N, how long does it take to increase the speed of the train from rest to 64 km/h?
February 1, 2012

Chemistry
Could the answer be fluorine
January 31, 2012

Chemistry
I have a question I want to make sure I'm going in the right direction. The question states give a diatomic element which is not a gas could the answer be any of the noble gases
January 31, 2012

Chemistry
I'm looking for the missing information in the table symbol- number of protons-36 number of neutrons-42 number of electrons- mass number-
January 25, 2012

Chemistry
Fill in the missing information in the following table of four neutral atoms Symbol- 37Cl number of protons- 36 46 number of neutrons- 42 number of electrons- 33 mass number- 77 106
January 25, 2012

Account Recievables
You notice that your accounts receivable days outstanding has doubled in the first 6 months. Do you give someone a bonus or put him or her on probation? Why?
January 24, 2012

Chemistry
Give the formula of each of the following copper minerals: A. cuprite, copper (I) oxide B. chalcocite, copper (I) sulfide C. covellite, copper (II) sulfide
January 23, 2012

Chemistry
heptane and water do not mix, and heptane has a lower density (0.684g/mL) than water (1.00g/mL). A 100mL graduate cylinder with an inside diameter of 3.10 cm contains 39.90g of heptane and 34.00g of water. What is the combined height of the two liquid layers in the cylindar? I...
January 21, 2012

Chemistry
the answer that I got once I multiply it is 51.3
January 20, 2012

Chemistry
would you multiply 0.789 x 65.0?
January 20, 2012

calc
If f (3) = 9 and f ´(3) = 4, find the tangent line to the graph of f when x = 3.
December 28, 2011

CALC
The radius in meters of a circular oil slick increases at a rate of (12 - 0.3t), where t is measured in hours. Which of the following expressions would calculate the rate at which the area of the oil slick is increasing when the radius is 100 meters?
December 28, 2011

CALC
Find the tangent line to the ellipse defined by 3x^2 + 5y^2 = 17 at the point (-2, 1).
December 28, 2011

Medical Billing
278.01,
December 14, 2011

chemistry
Which of the following statements is (are) true about a compound that has a molecular ion peak in its mass spectrum at mass 94, and shows prominent peaks in its IR spectrum at 3600–3200 and 1600 cm–1? A) The compound has a molecular mass of 94. B) The compound ...
December 11, 2011

chemistry
What type of feature will be observed in the EI mass spectrum of chlorobenzene? An absorption at 3100 cm–1 No signal at all A signal at 112 and a signal at 114 in a ratio of 3:1 A signal at 112 and a signal at 114 in a ratio of 1:1
December 11, 2011

sociology
Define urbanization and suburbanization. What are some ways that urbanization and suburbanization contribute to social problems?
December 1, 2011

Math
I need help on this??
December 1, 2011

Math
What is a3-1=? The 3 post to be on top of the a a little bit
December 1, 2011

Statistics
1-.02=2.33=z-value plug into the equation [(2.33)^2*.5*.5]/(.02)^2 3393.06
October 26, 2011

MATH(convert fraction)
so 3/8 is 16 centi on a scale and what is 3/4 on a scale?
October 18, 2011

convert fraction
so 3/8 is 16 centi on a scale and what is 3/4 on a scale?
October 18, 2011

MATh please help
Helen has$1.35 in her bank in nickels and dimes. There are 9 more nickels than dimes. Find the number she has of each kind.
October 18, 2011

math help please
Helen has$1.35 in her bank in nickels and dimes. There are 9 more nickels than dimes. Find the number she has of each kind.
October 18, 2011

MATH (PLease HELp)
Sally has three times as many dimes as nickels and twice as many quarters as dimes.In all she has $5.55. How many coins of each type does she have? Let 2x=quarters 3x=dimes x=nickles <---- is that correct please help put
October 18, 2011

ALGEBRA-Help please
x+3y=4 -x -x ALWAYS X means 1 3y=4 divide by 4 y=1
October 13, 2011

MATh
Distance = rate x time
October 13, 2011

MATh
Kesha dove from Buffalo to Syracuse at an average rate of 48miles per hour. On the return trip along the same road she was able to travel at an average rate of 60 miles per hour.The trip from Buffalo to Syracuse took one- half hour longer than the return trip. How long did the...
October 13, 2011

MATh (distance)
Kesha dove from Buffalo to Syracuse at an average rate of 48miles per hour. On the return trip along the same road she was able to travel at an average rate of 60 miles per hour.The trip from Buffalo to Syracuse took one- half hour longer than the return trip. How long did the...
October 13, 2011

Social Studies (civilizations)
How was the Persian empire was different from the Assyrian Empire?
October 10, 2011

MATh ( translate words into number)
k thx got it
October 10, 2011

MATh ( translate words into number)
40. The greater of two numbers is 1 ore than twice the smaller. Three times the greater exceeds 5 times the smaller by 10. Find the numbers. How do i start please explain. WHere do i start and how to do do this. AM very confused.
October 10, 2011

MAth translate please thx
If 5 times the smaller of two numbers is subtracted from twice the larger the result is 16. If the larger is increased by 3 times the smaller, the result is 63. Find the numbers.
October 10, 2011

Math - translate (please check)
4. The sum of two numbers is 50. If twice the larger is subtracted from 4 times the smaller the result is 8. Find the numbers is it this x+x(2x-4=8)=50
October 10, 2011

Theme please check
thanks
October 9, 2011

Theme please check
the story is A piece of Pie by Damon it was mistake for posting it two times
October 9, 2011

Theme please check
Could the theme be No women could change men The story is about a man marrying a women and the women wants the man changing his diet. The women bosses him around then the man finds another girl and takes off with her. He took off with her because the women bossed him around ...
October 9, 2011

Social Studies Help!!!!!!!
how did mercantilism affect different cultures?
October 6, 2011

meaning
The Thar Desert provide the majority of India's rainfall.. Does this mean that the thar desert prevents rain
October 6, 2011

chemistry
How many moles of sodium bicarbonate are contained in 1mL of a saturated solution of NaHCO3 (approximately 1g of solute is dissolved per 9mL solution)?
October 5, 2011

English Help!!!!
Could you tell me about a person who dominated the poor and uneducated.
October 5, 2011

physics
At highway speeds, a particular automobile is capable of an acceleration of about 1.6 m/s2. At this rate, how long does it take to accelerate from 76 km/h to 118 km/h
September 22, 2011

math
using limits...finding the tangent line of the square root of x when x=2
September 22, 2011

Algebra
One is traveling 360 mph and the other is traveling 390 mph.
September 19, 2011

chem
How many gold atoms are in an 0.408 ounce, 18 gold bracelet? (18 gold is 75% gold by mass.)
September 19, 2011

Com/155
I want to know how it affect your paper
September 16, 2011

3rd grade math
Ashton broke apart a number into 30+7. What number did she start with?
September 6, 2011

information litercy
what type of citation would you use for an english paper? 1.ASA 2.Chicago 3.MLA
August 23, 2011

geometry
Write a two column proof. Given CE = CA, EB and AD are medians, Prove: EB = AD for a triangle
July 27, 2011

Psychology
Construction
July 27, 2011

science
Question: If you have an electric motor on a bench and hook it to the power the shaft turns. If you put the shaft in a vise the casing of the motor will turn. Now:...put this motor in free space no gravity and attach a battery for power..when the power is turned on will the ...
July 25, 2011

philosophy
What is the influence of television commercials on American culture? If you could do something about TV commercials what would you do?
May 21, 2011

Math
What q equals.
May 18, 2011

Math
Yes
May 18, 2011

Math
Simply. 3 + 4(q + 3) + 4q
May 18, 2011

SAT English
i need some explanations please
May 16, 2011

SAT English
people who have committed felonies are not permitted to serve on juries in many states.Also, in Tennessee and Arkansas. there are laws barring atheists from serving on juries and other public service positions. Sometimes,felons are denied the right to vote.Are these ...
May 16, 2011

apple
Do you recognize the company or organization represented by the logo? If you do, where were you first introduced to this logo? Over time, has the graphic changed but still remained recognizable and associated in your mind with the company or organization? What does the graphic...
May 3, 2011

science
visual means
May 1, 2011

science
name att least 3 aspects that contribute through visual means. Give examples?
May 1, 2011

seeing is believing
Describe one experience where you were deceived by what you saw. Describe one experience where you chose not to believe what you had seen.
May 1, 2011

organic chemistry
Draw structural formula 4-propyl-1-methyl-cyclohexene
April 29, 2011

American history
After the Spanish-American War, the _______ reserved the right of the United States to intervene in Cuba's internal affairs.
April 22, 2011

english
When Greg went to a job interview on Monday, they hired him that same day.When Greg went to a job interview on Monday, they hired him that same day.
April 19, 2011

Math
Solve for x log 1000=x
April 19, 2011

accounting
I attend penn foster i an working on chapter 1 example number 06168900 and want to know how do i began to do a 3 month accounting period using a fiscal year calendar?
April 12, 2011

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