Wednesday
July 30, 2014

Posts by Jennifer


Total # Posts: 2,006

chemistry
A gas of unknown molecular mass was allowed to effuse through a small opening under constant-pressure conditions. It required 52 s for 1.0 L of the gas to effuse. Under identical experimental conditions it required 24 s for 1.0 L of O2 gas to effuse. Calculate the molar mass o...

math
i don't know if this is what you're looking for, but i got y=3x+2

Honors Pre-Cal
a) standard form is the simplest version of the equation. so the standard form would be x^2-1. (-4+3= -1) b) because this is a parabola, the vertex if the lowest or highest point on the graph. Put the equation into your calculator and (2nd)(trace)maximum or minimum to find the...

Chemistry
You have a bottle of 20% NaOH. You will use some of it to make a new solution by dilution with water. How musch 20% NaOH is needed to prepare 150mL of 7% NaOH by dilution.

Chemistry
A certain radioactive element has a half life of 1 h. If you start with a 1-g sample of the element at noon, how much is left at 3:00 PM? At 6:00PM? At 10:00 PM?

Chem
Could someone please walk me through step by step on how to do this. Propane (C3H8) burns in oxygen to produce carbon dioxide and water. C3H8(g) + 5 O2(g) 3 CO2(g) + 4 H2O(g) Calculate the mass of CO2 that can be produced if the reaction of 48.2 g propane and sufficient oxygen...

Chem
Which of the following pairs of elements are likely to form an ionic compound? lithium and chlorine sodium and potassium phosphorus and chlorine sodium and nitrogen argon and potassium

Chemistry
How would I determine the electronegativity of Ethanol?

Chemistry
An antacid tablet weighing 1.462 grams was dissolbed in 25mL of 0.8M HCl and diluted with water. The excess HCl was titrated with 3.5 mL of 1.019M NaOH solution. 1. Calculate the number of millimoles added to the tablet 2. Calculate the number of millimoles of NaOH required t...

Chemistry
How many molecules of Cl2 would be formed from the reaction mixture that produces the greatest amount of products? 4HCl + O2 --> 2H2O + 2Cl

math
the are of a is 151 square meters.whats the perimeter?????

English
Does this sound like a good thesis statement? Veterinary technicians role is challenging as well as satisfying.

English
That's suppose to be there, not their.

English
Is their anything wrong with this sentence, like grammatical errors? Veterinary technicians role is challenging as well as satisfying.

Chem
I have look and read and I still cant figure the couple out can someone please help? Number of orbital’s in the 2p subshell? And Number of electrons in 3d subshell? Number of electrons in a 3p orbital? Subshell block begins to fill after 4s2? Number of valence electrons ...

Chem
I have look and read and I still cant figure the couple out can someone please help? Number of orbital’s in the 2p subshell? And Number of electrons in 3d subshell? Number of electrons in a 3p orbital? Subshell block begins to fill after 4s2? Number of valence electrons ...

chem 1411
Mg(NO3)2 + (NH4)3PO4 predict the product and balancing the equation. Use solubility rules to predict if a precipitate is formed.

college english
I have to revise sentences to eliminate illogical or overused coordination. Are the following sentences correct? Thanks! The object of fencing is to be the first to touch the opponent five times, and a "president," who is sometimes assisted by a number of judges, off...

college english
Thanks! Ok I have another one :) I think this one is correct: Generally, a fencer specializes in one of the three weapons, but some competitors are equally skilled with all three. Is that one correct or do I need to revise it?

college english
I have to revise sentences to eliminate illogical or overused coordination. Is the following sentence correct? Thanks! Fencing equipment includes a mask, a padded jacket, and a glove, and one of three weapons-a foil,epee, or saber-and a fencer's technique and targets diffe...

Organic Chemistry!!!
pure acetylsalicylic acid has a melting point of 135.0 - 135.5 degreed celsius. what would you expect to happen to the melting point if this was mized as a 50:50 mixture with pure benzoic acid (mp 121 - 122)

Chemistry
Why does beta radiation take place? What happens to beta particles after being stopped? Please help me!!!!

Chemistry
How do you measure radiation?

Chemistry
What happens to the beta particle when stopped

Chemistry
Why does beta radiation take place?

spanish
I don't know where accent marks go in this paragraph. Dentro de unos minutos van a mostrar una pelicula increible en la television. Se llama LOS PERUANOS PREHISTORICOS, y la narra el famoso actor Ricardo Montalban. El tiene una voz magnifica, sabes. La mire varias veces el...

Spanish
I need help placing accent marks where they belong in this short story. !Hola, Andres! ?Como estes? Fantastico, Carmen, ?y tu? Horrible. ?Por que? El profesor Gomez me indico ayer que yo tendre que sacar por lo menos una B en el examen manana para salir bien en mi curso de ant...

Chemistry
Why does beta radaiation take place? If there is a website that can help me please post it. Thanks

Chemistry
How can beta radiation be stopped by a piece of aluminum foil?

Physics
A ball is thrown vertically upward with a speed of 25.4 m/s from a height of 2.1 m. (Remember gravity is a=9.8m/s^2) How long does the ball take to hit the ground after it reaches its highest point? Answer in units of s.

math
three times a number less four is 17 put in number form

math
three times a number less four is 17 put in number form

Physics
An engineer in a locomotive sees a car stuck on the track at a railroad crossing in front of the train. When the engineer first sees the car, the locomotive is 210 m from the crossing and its speed is 26 m/s. If the engineer’s reaction time is 0.62 s, what should be the m...

Computer Security
The standard names used to identify the parties to secure communication session are?

social studies
information about southern colonies

Chemistry
1.)Convert: 2.6g to 6.73g F 2.)7.61 g of potassium(K) reacted with 14.6g of chlorine(Cl) to form the compound Kcl. What mass % of the compound is due to Potassium?

Chemistry
Compare and contrast two elements combining to form a compound and two compounds combining to form a mixture.

6th grade
they asking me what is a square pizza models numerator denominator

math
what are some factors of 36

Computer Security
Hackers use data input forms to add scripts to the server that then steal user information. This is known as buffer overflows. True or False

math
the perimeter of a triangle is 76 centimeters. the second side is twice as long as the first side. the third side is four centimeters shorter than the second side. how long is each side?

Chemistry
Could weighing the substances wrong be a source of error?

Chemistry
I did a lab in chemistry about weighing table salt and sand and mixing it with water and pouring it through a funnel. One of my lab quetions was, What are some possible sources of error in this activity? First of all, I don't know what this question means. Can anyone pleas...

math
the width of a rectangle is one half its length. the perimeter of the rectangle is 54cm. what are the width and length of the rectangle.

Math
how do I graph the equation 2x+y=0?

3rd grade
What is the Predicate of a Sentence

Database Management
What is wrong with using MS Access for a fifty station online purchasing system or though rare, when might it be OK. What is wrong with using SQL Server for a "Mom and Pop" shop of three computers?

Statistics
I don't know where to start with this in Excel. Player Rating TD% Inter% Steve Young 96.8 5.6 2.6 Kurt Warner 95.7 5.5 3.5 Daunte Culpepper 93.2 5.4 3.1 Peyton Manning 92.3 5.6 3.1 Joe Montana 92.3 5.1 2.6 Trent Green 87.9 4.7 2.9 Tom Brady 87.5 4.8 2.6 15.34 For the data ...

health information management technology
The problems at hand are the backlog of incomplete records, to many delinquent records, and not enough shelf space. I would figure out why they ended up getting back up with medical records. Maybe have to retrain the staff. Get the physicians signatures on all records who need...

ETH125
OK. I am a Navajo female child after the civil war and I have been stolen from my family and put into Boarding school where I will be assimilated into White society. A first person account of the assimilation of a Navajo Native american in the middle 1800

ETH125
Im trying to write a first person journal account of the Native American Subordinate. I need help getting started.

algebra
Todd has 1 liter of a 20% sulfuric acid solution. How much of a 12% sulfuric acid solution must he mix with the 1 liter of 20% solution to make a 15% sulfuric acid solution?

college
Essentials of statistics is the subject and the question is: The population of IQ scores forms a normal distribution with a mean of u=100 and a standard deviation of sigma=15. What is the probability of obtaining a sample mean greater than M=105 for a random sample of n=36 peo...

Fundamentals of Law
Assignment Type: Individual Project Deliverable Length: 1-2 pages Points Possible: 130 Due Date: 8/1/2010 11:59:59 PM CT Your sister has come up with what she thinks is a brilliant idea for a home-based business - a website which helps lonely people find their perfect match b...

History 1301
I am looking for this information too for my my history paper, and I can not seem to find it anywhere.

business law
1.Why is personal jurisdiction an issue for those who post Websites? 2.What are some reasons that a website owner might be concerned with whether a court is able to obtain 'personal jurisdiction' over them? 3.What is normally required for a court to have personal juris...

payroll accounting
4. First Case Manufacturing Company has annual payroll of $100,000. Voluntary contribution are allowed in the State where this company does business. Total unemployment taxes paid into the State’s unemployment fund amounts to $24,000. Cumulative unemployment benefits paid...

Business
Using requirements of Value Chain Management put these requirements to work specifically at the Smart Chips Company in order to help it remain competitive in the long run.

algebra2
For example 100/4= 25. So we know that 25 times four is 100 percent. Therefore, 15 times 4 is 60%. The percent notation would be 60%

algebra2
percent notations are different ways of showing a fraction for example: Example 1: Write the three percent notations for 25%. 1: ratio = 25/100 2: fractional = 25%=25 X 1/100 3: decimal 25% = 25 x .01

Chemistry
please? I'm going to have to leave it like this =/

Chemistry
equilibrium expression for the combustion of octane? My project is due today =/ (it's 1:30 now, and I really need someone to clarify this last one question. Thanks! This is what I got for the combustion of octane. ^denotes a superscript/exponent. [H2O]^18[CO2]^16 ---------...

Algebra HELP :(
sorry the ratio is confusing I cross multiplied 6 by 100 and 5 by x then solved for x. Hope this helps =)

Algebra HELP :(
okay so set it up as an equation. first subtract the processing fee from the penalty fee. there fore, fee = 6 we now know that 6 is 5% of the check. there fore do a ratio to find the answer which = x 6 x - x - = x= 120 5 100 the check was initally $120 in an equation write: 16...

COLLEGE
class= 100 students = 57 therefore 100-57= 43 students didn't recieve an a. you cant simplfy it I don't think. There fore 43/100 is the fraction that didn't recieve the grade.

algebra logarithms
hey use this key to help you out exponential form: 10^3=1000 logarthimic form:log10 1000 = 3 therefore, your problem would be... 10^2 = x 10 x 10 = 100 x = 100

7th grade
You can always find tests in book stores Brenda. I recommend trying a test, to see where your sons strengths and weaknesses are. It doesn't hurt to give a test. =D try looking online, many textbook companies have little test prep books or tests availiable to purchase. I al...

HIS 115 - American History to 1865
What social, political, and economic changes pulled the North and the South further apart?

Algebra
Let the station be at x = 0. After 2:37 pm, train A is at x(A) = (2:37-2:25)/(60 minutes per hour)*80 mph + 80 * t, or x(A) = (12 min / 60 min per hour) * 80 mph + 80 * t x(A) = 16 + 80 * t where t is hours after 2:37 for train B, x(B) = 100*t Set x(A) = x(B) or 100*t = 16 + ...

English
I need help interpreting the poem "I Never Saw Another Butterfly" by Pavel Friedman. I need to describe the tone of the poem from the verses. I also have to mention the meaning of the poem as it applies to Pavel. Thanks!

Food engineering/biology
Hey Can anyone help me out with this problem. For part a i understand i plot microbial numbers against time on semi log paper to determine D value for the two temperatures. But i'm unsure how to do part b. Alicyclobacillus acidoterrestris is a quite hat resistant microorga...

operation management
A quoting department for a custom publishing house can complete 4 quotes per day, and there are 20 quotes in various stages in the department. Applying Little’s Law, the current lead time for a quote is how many days?

Finance
Landis Corporation The Landis Corporation had 2008 sales of $100 million. The balance sheet items that vary directly with sales and the profit margin are as follows: Percent Cash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5% Accounts receivable. . . . . ...

English
Please ignore the question mark.

English
What did the SS say to Jews as they were taken from their homes? I want to start my report from the time I was taken from my home and I want to use German words to make it seem as if I really was a Jew during the holocaust. Thanks again for the help?

English
I have searched all over the internet, buy still I haven't been able to find information on Pavel Friedman. I do know that he was a boy who was sent to Terezin and then sent to Auschwitz and was later killed. I also know about his poem. My teacher wants me to write a half ...

English
thanks!

English
When I meant how far, I meant how far in days

English
I'm writing a report by interpreting myself as a Jew during the holocaust and I have to write a journal entry about 8 to 10 sentences describing the time spent on the way to my concentration camp. I was wondering, how far it was from Holland to Auschwitz?

chemistry
what does the arrow in a chemical equation mean?

grammar
She has never been missed her homework. What about: She has never missed her homework.

English
I have to write a report as if I were a Jew in a concentration camp. I have to use Jewish names for myself as well as my family. Does any body know of any Jewish name that were popular back then as well as occupations that Jews had back then. The help is greatly appreciated. I...

Math: Help: probability
It would be, there are 13 diamonds and 13 clubs. because 13/52 is 1/4 which is how many cards of diamonds, clubs, hearts, or spades each have. SO, if a person draws one card (we're assuming this is a club) which could be 13/52 because there are 13 total clubs, then there w...

Math
I understand how to do these kind of problems except this one. Write the equation that has the given roots. Roots: 3 with multiplicity of 2, -5, 0 with multiplicity of 4. By the way I understood the help that I got earlier, but this problem seems to be more confusing.

Math
Write the equation that has the given roots. Roots: 1 with multiplicity of 2 and -1 How do you figure it out?

English
Should this sentence have a comma in it? The excitement and adventures he gained along the Mississippi River as a steamboat pilot gave him the insight into characters that are in his writings.

English Literature
Never mind, the answer is b.

English Literature
The Celebrated Jumping Frog of Calaveras County 2. Wheeler suggest that the most surprising thing about Jim Smiley's betting was a. his success. b. his lack of success. c. his cheerful attitude about it. d. the range of things on which he would bet. I think it's either...

algebra
simplify: 1/4 - (-3/8)

algabra
what is the prime factorization of 420

algrba
thanks jenn how do u simply 12/36 can u pls tell me how to get to answer

algrba
help me to sole these problem please, multiply -2(X-3)

Stats
You are to imagine that you are part of a select marketing group. This group is to consider the Colorado City Convention and Vistitors Bureau survey of 25 hotels. The survey is concerned with the current availability of rooms. They are as follows: 90, 72,75,60,75,72,84,72,105,...

Stats
You are to imagine that you are part of a select marketing group. This group is to consider the Colorado City Convention and Vistitors Bureau survey of 25 hotels. The survey is concerned with the current availability of rooms. They are as follows: 90, 72,75,60,75,72,84,72,105,...

ohys101(heat)
23

Calculus Ladder Problem
A ladder 20 ft long rests against a vertical wall. Let \theta be the angle between the top of the ladder and the wall and let x be the distance from the bottom of the ladder to the wall. If the bottom of the ladder slides away from the wall, how fast does x change with respect...

Math
A ladder 20 ft long rests against a vertical wall. Let \theta be the angle between the top of the ladder and the wall and let x be the distance from the bottom of the ladder to the wall. If the bottom of the ladder slides away from the wall, how fast does x change with respect...

Math
A ladder 20 ft long rests against a vertical wall. Let \theta be the angle between the top of the ladder and the wall and let x be the distance from the bottom of the ladder to the wall. If the bottom of the ladder slides away from the wall, how fast does x change with respect...

pre-calculus
Stretch vertically by factor of 2, move up 6 units

math
y=4x+5 plug in 0 for x and the y-intercept is 5 (0, 5)

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