Wednesday
April 16, 2014

Homework Help: High School

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Chemistry
In this experiment NaOH is standardized to find out the percent by mass of the acetic acid in a sample of vinegar. A student had not allowed the NaOH pellets to dissolve completely before standardizing it with KHP, but when the student refilled the buret with NaOH to titrate ...
Saturday, March 29, 2014 at 12:32pm

Medical Billing needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. I have no idea what the acronym, "HIM," means.
Saturday, March 29, 2014 at 11:37am

Stats
The high temperature X (in degrees Fahrenheit) on January days in Columbus, Ohio varies according to the Normal distribution with mean 21 and standard deviation 10. The value of P(X < 10) is
Saturday, March 29, 2014 at 10:00am

Chemistry
I think the % acetic acid will be too high. Standardization step: mols KHP = grams KHP/molar mass KHP mols NaOH = mols KHP M NaOH = mols NaOH/L NaOH Titration vinegar step: mols NaOH titrant = M x L mols acetic acid = mols NaOH g acetic acid = mols acetic acid x molar mass % ...
Friday, March 28, 2014 at 10:50pm

Chemistry
Titration was used to determine the molarity of acetic acid in vinegar. A primary standard solution of KHP was used to standardize the NaOH. 1. When performing this experiment, impure KHP was used to standardize the NaOH solution. If the impurity is neither acidic or basic, ...
Friday, March 28, 2014 at 10:32pm

Chemistry needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
Friday, March 28, 2014 at 4:41pm

Chem help needed
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
Friday, March 28, 2014 at 2:34pm

Chemistry
I don't know exactly how the experiment was conducted but I think 1 is right. For 2, however, I think the results must be either too high or too low (but see the note below). If too little liquid is placed in the flask that means that vapor cannot fill the flask so your ...
Friday, March 28, 2014 at 2:29pm

Language Art (Please Check)
1.C 2.A 3.C 4.C 5.D 6.D 7.B 1.She was rivaling the mayor by A.sending money to him. B.voting for him. C.running against him. 2.In which of the following situations would you be most likely to be caught up in a commotion? A.a riot B.a math exam C.a school assembly 3.Which of ...
Friday, March 28, 2014 at 10:53am

geometry
Two buildings are separated by an alley. Joe is looking out of a window 60 feet above the ground in one building. He observes the measurement of the angle of depression of the base of the second building to be 50 degrees and the angle of elevation of the top to be 40 degrees. ...
Thursday, March 27, 2014 at 9:14pm

Physics.
Your teach is too easy. What is the weight of a column of water of area .6cm^2 1.4 meters high? Weight= volume*density*g = .60cm(1m/100cm)^2* 1.4m*1E6kg/m^3*9.8N/kg= =.6*EE-4*1.4*1EE6*9.8
Thursday, March 27, 2014 at 3:53pm

Physics
Pressure = weight density × depth Calculate the water pressure at the bottom of the 50-m-high water tower shown in the photo. Express your answer to two significant figures and include the appropriate units
Thursday, March 27, 2014 at 3:29pm

who dare to give the answer!
i have passed class -9 with 10 CGPA.in DAV public school,and it is affiliated to CBSE.but,now i want to change my school.and take admission in class -10 in a different school,and it is also affiliated to CBSE board,under the same zone.is it possible for me?please explain the ...
Thursday, March 27, 2014 at 8:43am

physics
Others say that the balloon was 23 metres high and 14 metres wide. Calculate the temperature of the air in the balloon (in degrees Celsius) for this situation as well
Wednesday, March 26, 2014 at 11:56pm

Science
If an astronaut could hop 40 cm high on Jupiter, how high could he or she jump on earth? On the moon? Please help me fast I have a bunch of questions over this and I have no idea what this even means
Wednesday, March 26, 2014 at 7:21pm

english essay
global warming genetically modified foods deforestation urban sprawl energy conservation ethanol wolves high prices of prescription medications
Wednesday, March 26, 2014 at 6:46pm

Math
Jayce wants to paint her room Duke Blue.Her room is 12 ft long ,12 ft 10inches wide, and 10ft high.If Dylan insists she paint her ceiling white, about how many cans of blue paint will she need to buy to paint the walls.One can covers 120 square feet. Ignore the windows and ...
Wednesday, March 26, 2014 at 5:34pm

L.A
Read this sentence from New Directions.When we came from school, the wall was slick with white.Which meaning of the word slick is used in the sentence above? A.impressive and efficient<---- B.wet and slippery
Wednesday, March 26, 2014 at 5:19pm

Health and Physical
6. Winston’s baseball team had the bases loaded in the last inning when his friend Freddie watched three straight pitches go by without swinging and was called out on strikes to end the game. How can Winston demonstrate responsible behavior in this situation? Ask the ...
Wednesday, March 26, 2014 at 3:00pm

Health and Physical
1. Melody enjoys playing team sports, such as baseball and soccer. Which organization would provide her the best opportunity to participate in these activities? Parks and recreation center********* Private school A local gym A faith based organization 2. Abner participates on ...
Wednesday, March 26, 2014 at 1:44pm

Life science, business and maths literacy
my name is amanda and am doing grade 12 at school am doing business,life sciences,geography and maths lit so what i want to know is the career that is suitable for these subjects
Wednesday, March 26, 2014 at 5:27am

Rosaline have you got it ?
If you are still stuck, look at the graphs Steve linked you to carefully and see three areas between the curves on the x axis. Those are values of x where your original function is between the limits. The last area on the right is not feasible because the width would be ...
Tuesday, March 25, 2014 at 9:05pm

education
Teacher observations are vital to the promotion and maintenance of children's health status because: A. they provide a baseline of typical behavior and appearance of each child. B. teachers have primary responsibility for children's health care while they are attending...
Tuesday, March 25, 2014 at 5:20pm

GENETIC HYPOTHESIS
AIM:TO DETERMINE THE NUMBER OF GR.10-12 THAT CAN ROLL THEIR TONGUE(rollers) AT SCHOOL. 1)fomulate a hypothesis. MY ANSWER:GR.11 HAS M0RE LEARNERS THAT CAN ROLL THEIR TONGUE (is it correct and any tips to master ths)
Tuesday, March 25, 2014 at 3:07pm

****HELP**** STATISTIC
The table below shows the probability distribution of the types of food purchased by students from the school cafeteria. What is the probability a student has purchased Caesar salad? (2 points) 0.17 Suppose houses are available for purchase during construction of a new ...
Tuesday, March 25, 2014 at 1:48pm

Math
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. 4/8 is 4 times greater than 1/8 and they add to 5/8.
Tuesday, March 25, 2014 at 1:25pm

social studies check answers
1.C 2.D 3.A 4.D 5.C 6.B 7.D 8.B 9.B 10.A 1.The story of Omar best reflects A. opportunities for people in the Pampas. B. struggles faced by families who work the mines of the Andes. C. hardships undertaken by indigenous farming families. D. benefits of urban life along the ...
Tuesday, March 25, 2014 at 12:38pm

science
At 0 Hz, the capacitor has high impedance At high Hz, the inductor has high impedance The circuit's impedance reaches a minimum at the resonant frequency of the LC portion. The resistor keeps it from ever being zero, to protect the voltage source.
Tuesday, March 25, 2014 at 11:42am

Geometry
A fighter plane observes a target on the ground with an angle of depression of 21 degrees. The target is 3.5 miles away along a direct line of sight. How high is the fighter plane? Round to hundredths. Please help!
Monday, March 24, 2014 at 11:33pm

chemistry
Have no idea..
Monday, March 24, 2014 at 9:28pm

Music
So I can't follow links, but I am doing a slideshow about losing someone you care deeply about, (yes it is for school) and I am trying to find a certain song. It is country, I cannot remember the name of the song or the artist, but i know that it is two names (the artist, ...
Monday, March 24, 2014 at 6:48pm

Health
A swimmer would like to improve his time in the 100 yard freestyle race. After talking to his coach, he intends to focus on one critical element at the beginning of the race. This swimmer will try to improve his 100 yard freestyle time by improving his (1 point) Power of the ...
Monday, March 24, 2014 at 5:52pm

Math
Are you sure you copied these numbers correctly? 24 times in 10 seconds means that it beats 243 times a minute. That's a dangerously high heartbeat. http://www.heart.org/HEARTORG/GettingHea​lthy/PhysicalActivity/Target-Heart-Rates​_UCM_434341_Article.jsp
Monday, March 24, 2014 at 5:46pm

Treaty of Paris, quick question, thanks! &#9786;
The Treaty of Paris in part included returning to where exactly? I cannot remember and I am writing a paper for school in which I need to know where they went to. Thanks! ☺ ~katt
Monday, March 24, 2014 at 5:39pm

Help Please Statistic
7. The table below shows the probability distribution of the types of food purchased by students from the school cafeteria. What is the probability a student has purchased Caesar salad? (2 points) 0.17 Suppose houses are available for purchase during construction of a new ...
Monday, March 24, 2014 at 4:28pm

MATH
there are 400 students at smith Elementary school 1/4 of the students are in fourth and fifth grade, 1/10 of the students are in grade 3, 2/8 are in second grade and 2/5 are in first grade . How many kids are in each grade? (4th and 5th have an equal amount)
Monday, March 24, 2014 at 3:14pm

physics
if you throw a 0.2 kg ball straight up at 8 m/s how high will it go
Monday, March 24, 2014 at 12:05pm

help &lt;~~??
I never heard of a course called "help" -- you should learn to follow directions and put your SUBJECT in the School Subject box if you truly want help from the right tutor.
Monday, March 24, 2014 at 10:41am

chemistry
2. When preparing a NaOH solution, a student did not allow the NaOH pellets to completely dissolve before standardizing the solution with KHP. However, by the time the student refilled the buret with NaOH to titrate the acetic acid, the remaining NaOH pellets had ...
Monday, March 24, 2014 at 7:50am

Physics
Starting with an initial speed of 5.00 m/s at a height of 0.335 m, a 1.75-kg ball swings downward and strikes a 4.40-kg ball that is at rest, as the drawing shows. (a) Using the principle of conservation of mechanical energy, find the speed of the 1.75-kg ball just before ...
Sunday, March 23, 2014 at 7:36pm

Social Studies
With affirmative action, certain minority groups are admitted to college even though their grades and test scores may not be as high as some of the majority students. http://www.ncsl.org/research/education/a​ffirmative-action-overview.aspx
Sunday, March 23, 2014 at 5:52pm

chemistry
1. When performing this experiment, a student mistakenly used impure KHP to standardize the NaOH solution. If the impurity is neither acidic nor basic, will the percent by mass of acetic acid in the vinegar solution determined by the student be too high or too low? Justify ...
Sunday, March 23, 2014 at 3:05pm

Physics
if you throw a 0.2 kg ball straight up at 8 m/s how high will it go
Sunday, March 23, 2014 at 2:14pm

Basic Spanish
My grandson need tutoring in basic Spanish to improve translate from Spanish to English in writing assignments, &grammar . Do you have review , similar to Khanacademy ? He needs tutoring to improve basic Spanish , has no tutoring in his school. Thank you
Sunday, March 23, 2014 at 8:46am

physics
if you throw a 0.2 kg ball strait up at 8 m/s how high will it go
Sunday, March 23, 2014 at 7:48am

statistics
The highest point in the scatter is the point for Illinois, at 1807. The two just below it, at 1778 and 1777, are for Minnesota and Iowa. The lowest points are at 1391 and 1385, for Maine and D.C. respectively. Pick all the options that are correct. The scatter diagram shows ...
Saturday, March 22, 2014 at 3:47pm

focus high school
What percentage of all infertile American women are infertile because of tubal damage caused by untreated STD?
Saturday, March 22, 2014 at 3:20pm

Art - Help ASAP!!
Send the university an email with your question. I have a hunch that the school doesn't offer a degree in sculpture. The length of time depends upon whether you want a bachelor's or master's degree.
Friday, March 21, 2014 at 10:19pm

Algebra
Please explain how to do this problem. The answer says the answer is 2.43 inches, but I don't get it. A school wants to take out an ad in the paper congratulating a basketball on a successful season. The area of the photo will be half the area of the entire ad. The photo ...
Friday, March 21, 2014 at 9:45pm

please
Jiskha doesn't have an expert in the school subject of "please." A chemistry tutor might help you if you showed you could read and follow directions by typing your school subject in the appropriate box.
Friday, March 21, 2014 at 9:03pm

Physics
A ball is traveling down a straight track at 20 m/s. How fast will the ball's speed be after it climbs a hill in the track that is 15 m high?
Friday, March 21, 2014 at 4:43pm

scholarship essay edit
can someone edit this? Throughout my life’s journey, I have come to attain two true passions - the first one being English studies. Since the very dawn of childhood, I have been known to bleed the calligraphic content of Gary Soto's brilliant poetry and breathe the ...
Friday, March 21, 2014 at 1:23pm

Language Arts
Why is the statement "The bill will be too harsh" an opinion? a. it can be proved b. it can be supported with evidence c. it is someones belief ** d. it is true. Which statement is an appeal to emotions? a. The bill unfairly targets one group for unusually harsh ...
Friday, March 21, 2014 at 12:57pm

health
Alpha cells in the pancreatic islets secrete the hormone glucagons in response to a low concentration of glucose in the blood. Beta cells in the pancreatic islets secrete the hormone insulin in response to a high concentration of glucose in the blood.
Friday, March 21, 2014 at 10:01am

Probability
If you had followed directions and put your SUBJECT in the School Subject box, you might have gotten an answer by now.
Friday, March 21, 2014 at 7:50am

Chemistry?
If you had followed directions and put your SUBJECT in the School Subject box, you might have gotten an answer by now.
Friday, March 21, 2014 at 7:29am

Math HELP!!!!!!!!
A superhero is trying to leap over a tall building. The function f(x)=-16x^2+200x gives the superheroes height in feet as a function of time. The building is 612 feet high. Will the superhero make it over the building? Explain.
Thursday, March 20, 2014 at 8:42pm

Language arts help!!
1–6, read the play excerpt below and answer the questions that follow. Jaws of the Water ACT TWO At rise we see DAD, TINA, and MARK rushing in and out of the living room. Each enters carrying important items—such as sleeping bags, rain gear, and gallons of water—...
Thursday, March 20, 2014 at 8:20pm

Math
A superhero is trying to leap over a tall building. The function f(x)=-16x^2+200x gives the superheroes height in feet as a function of time. The building is 612 feet high. Will the superhero make it over the building? Explain.
Thursday, March 20, 2014 at 7:36pm

Statistics
1. A sports researcher gave a standard written test of eating habits to 12 randomly selected professionals, four each from baseball, football, and basketball. The results were as follows: Eating Habits Scores Baseball Players Football Players Basketball Players 34 27 35 18 28 ...
Thursday, March 20, 2014 at 4:20pm

AED
I included a one-quarter (nine weeks) unit in eastern thought and lit (to some extent) for high school seniors and had no issues. That school's student population was nearly 100% Christian (either Catholic or Apostolic, for the most part), yet I never got questioning phone...
Thursday, March 20, 2014 at 4:15pm

AED
As we analyze Western thought vs. Eastern thought, we also should take a look at the application of each school of thought is applied. Lets say that American schools reform to include eastern philosophy in its curriculum. What steps would have to occur to prepare our students ...
Thursday, March 20, 2014 at 3:52pm

Language Art (Please Check)
3.A 4.D 3.Which of the following sentences contains a verb that agrees with its subject? A. The memories of her friend stay with her. B. Friends of the family helps them. C. Some people from the neighborhood gives them extra food. D. Sacks of mail is waiting at the main gate. ...
Thursday, March 20, 2014 at 2:06pm

Chemistry needs help
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.
Thursday, March 20, 2014 at 1:44pm

Physics
A 3.9 kg cat falls out a window. Just before landing, the cat's momentum is equal to 55.8 kg m/s. How high was the window where the cat fell from?(?m)
Wednesday, March 19, 2014 at 8:30pm

Criminal investigation
I would get an attorney, tell him what you know, and let him give info to the police. Attorneys love to squeal on non-clients...however, what if the attorney sees a profit motive, and calls the slasher, and offers to represent him thereby not calling the police (in Texas this ...
Wednesday, March 19, 2014 at 5:47pm

Science!
2. What is the momentum of a 20.0 kg scooter traveling at 5.00 m/s. 4.00 kg m/s 20.0 kg m/s 25.0 kg m/s 100 kg m/s <---- 3. Which of the following describes the relationship between friction and inertia? When there is more friction, there is less inertia When there is less ...
Wednesday, March 19, 2014 at 4:42pm

College Math
In a group of 200 high school students, 36 are taking biology, 52 are taking Spanish, and 126 are taking neither biology nor Spanish. If one of these 200 students is to be chosen at random, what is the probability that the student chosen is taking biology but not Spanish?
Wednesday, March 19, 2014 at 2:49pm

Astronomy
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question. Since this is not my area of expertise, I searched Google under the key words "fastest moon" to get these possible sources: https...
Wednesday, March 19, 2014 at 2:18pm

Physics
Bats chirp at a high frequency which humans cannot hear. They use the echoes to detect small objects, such as insects, as small as one wavelength. If a bat were to emit a chirp at a frequency of 60.0 kHz and the speed of sound waves in the air are 340 m.s, what is the size in ...
Wednesday, March 19, 2014 at 2:15pm

geometry
A vertical pole 10 meters high casts a shadow 8 meters long. At the same time, a nearby tree casts a shadow 40 meters long. Find the height of the tree in meters.
Wednesday, March 19, 2014 at 1:48pm

math
If a school canteen makes 72 sandwiches and sells 5/6 of them how many are sold
Wednesday, March 19, 2014 at 9:23am

english
Is this it? "The Eagle's Flight For the hunter’s fright, Eagle’s talons command, While the Eagle’s heights abound the flight. For the hunter’s smile, the Eagle’s pasts remind; In Eagle’s might, smiles the hunter’s fright. The Eagle ...
Tuesday, March 18, 2014 at 10:56pm

Calculus
you must be pretty damn stupid amanda. is suggest you quit school
Tuesday, March 18, 2014 at 10:11pm

Math
A 15-foot ladder is placed against a vertical wall of a building, with the bottom of the ladder standing on level ground 12 feet from the base of the building. How high up the wall does the ladder reach?
Tuesday, March 18, 2014 at 9:34pm

science
What describes the charecteristics of a liquid? A.) It has a fixed volume and shape. B.) It has high energy and expands to fill the container. C.) It has fixed volume and varied shape. D.) It has no fixed volume or shape.
Tuesday, March 18, 2014 at 8:31pm

Eric
Are these correct? 1. Which of the following is a correct statement about homeostasis? a. The effector sends the stimulus to the control center b. The receptor is enhanced by the control center c. The response causes disease d. The receptor sends the stimulus to the control ...
Tuesday, March 18, 2014 at 6:36pm

help i have no idea!!!!!!
2.The distance between Jill's home and her school is 400 meters. She walked 1m/s for five minutes. How many meters does she still have to travel to reach her school?
Tuesday, March 18, 2014 at 5:49pm

Personal
I have a question about like life... it relates to school as well. Like I have a huge project due THIS Thursday and I helped take care of my friends dogs and I have to take pictures of them and my friend says I can take them now and when I ask her she always says she can't...
Tuesday, March 18, 2014 at 5:30pm

4th grade math
In the school walkathon, Bev walked 2 1/5 miles, Dennis walked 3 2/10 miles, and Natalie walked 2 3/5 miles. what was the total distance they walked. write your answer as a whole number and as an improper fraction.
Tuesday, March 18, 2014 at 5:22pm

Floral design
During April, a customer asks you to create an arrangement for an invalid friend who must stay at home for five more days. The invalid friend loves flowers, especially fragrant ones. The amount the customer is willing to spend on the arrangement for this dear friend is so high...
Tuesday, March 18, 2014 at 3:04pm

social studies
1.D 2.B 4.C 1. the monumental cities of the incas demonstrated their A. extensive trade networks B. high level of organization C. interest in astronomy D. dependence on farming. 2. How does jose de san martin contribute to the formation of nations in the region? A. he became ...
Tuesday, March 18, 2014 at 2:50pm

grammar
In The Space Before Each of the Following items, place a C if the capitalization is correct, a zero (0) if it is incorrect. Then insert capitals where should be, and draw a line through capitals that should be small letters. 1.the Rocky Mountains i got C 2.my spanish course i ...
Tuesday, March 18, 2014 at 2:46pm

science quiz pls help!!!
In the following diagram, the green ball changes direction after colliding with the red ball because the red ball has more momentum. True False***? 2. What is the momentum of a 20.0 kg scooter traveling at 5.00 m/s. 4.00 kg m/s 20.0 kg m/s 25.0 kg m/s 100 kg m/s*** 3. Which of...
Tuesday, March 18, 2014 at 12:30pm

health
Drinking in moderation or not drinking at all will typically lead to? A. Weight gain B. Heart disease C. Weight loss D. High blood pressure
Tuesday, March 18, 2014 at 12:18pm

AMERICAN HISTORY
WHICH HIGH FEDERALIST TRIED TO CRUSH INTERNAL POLITICAL DISSENT AFTER XYZ A. JOHN ADAMS B. GEORGE WASHINGTON C. ALEXANDER HAMILTON D,THOMAS JEFFERSON
Tuesday, March 18, 2014 at 12:01pm

Chemistry
Determination of Ksp, ΔG°, ΔH° and ΔS° for Ca(OH)2. *** Need help on problem #3 & #4 *** CALCULATIONS: 1. Calculate the average solubility of calcium hydroxide, Ca(OH)2, at each temperature. 2. Calculate the Ksp for Ca(OH)2 at each temperature. 3. ...
Tuesday, March 18, 2014 at 3:30am

math
a poll finds that 24 of 40 students prefer the zoo for their next field trip. The school has a total 340 students. About how many students at the school would prefer zoo?
Tuesday, March 18, 2014 at 12:32am

Science
1. In the following diagram, the green ball changes direction after colliding with the red ball because the red ball has more momentum. True <---- False 2. What is the momentum of a 20.0 kg scooter traveling at 5.00 m/s. 4.00 kg m/s 20.0 kg m/s 25.0 kg m/s 100 kg m/s <...
Monday, March 17, 2014 at 11:56pm

Science -Check Answers-
1. In the following diagram, the green ball changes direction after colliding with the red ball because the red ball has more momentum. True <---- False 2. What is the momentum of a 20.0 kg scooter traveling at 5.00 m/s. 4.00 kg m/s 20.0 kg m/s 25.0 kg m/s 100 kg m/s <...
Monday, March 17, 2014 at 10:38pm

math
a 15 foot ladder is placed against a vertical wall of a building with the bottom of the ladder stand on level ground 12 feet from the base of the building. How high up the wall does the ladder reach?
Monday, March 17, 2014 at 10:33pm

help ms sue lang arts
For Questions 1–6, read the play excerpt below and answer the questions that follow. Jaws of the Water ACT TWO At rise we see DAD, TINA, and MARK rushing in and out of the living room. Each enters carrying important items—such as sleeping bags, rain gear, and ...
Monday, March 17, 2014 at 7:04pm

Personal Improvement
I think you mean values you can embody or demonstrate. You would demonstrate you believe in generosity, for example, by helping others and donating money or time or goods. List the values you're interested in, and think of things you can do in your life to demonstrate you ...
Monday, March 17, 2014 at 4:46pm

MS.SUE
thats my other 2 sisters we go to the same school in the same grade and how do u know our current location
Monday, March 17, 2014 at 4:03pm

social studies
1.why must omar and his brothers work in the mines? A.they cannot attend school B.their mother cannot support them C.they have no other job prospects D.they do not know another trade
Monday, March 17, 2014 at 3:06pm

Physics
A high efficiency natural gas furnace is 92% efficient. How many joules of output energy will 750kJ of input fuel provide? Please help! Thank you.
Monday, March 17, 2014 at 1:57pm

French school
This person has listed the number of school days of several countries http://norberthaupt.com/2012/04/20/schoo​l-days-around-the-world/ Not all countries are listed of course, e.g. he did not list my Canada, but I know that in Ontario the number of days is 195 on average.
Monday, March 17, 2014 at 9:45am

French school
My daughter-in-law writes: It depends on the school and the region. Some go to school on Saturdays and have Wednesdays off. Others have a regular workweek like in the US (Monday through Friday). They get a lot of holidays and a full summer though. But they have longer hours. ...
Monday, March 17, 2014 at 8:08am

French school
How many days do students go to school in France? On which days do they not go to school?
Monday, March 17, 2014 at 7:50am

Chemistry
I don't agree this answer. number %khp so high
Monday, March 17, 2014 at 12:54am

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