Questions Asked on
March 23, 2011

Spanish
Give the correct form of the appropriate verb, saber or conocer, which would be used in writing the following sentences in Spanish. 12. C Maria knew everyone. 13. S Because he had already seen the movie, he knew what happened? 14. S The student knows the
asked by anon 
Pre Algebra
Suppose you have an after school baby sitting service. You charge a flat fee of $10 per week plus $3 per hour. The equation y = 3x + 10 represents your earnings per week for one child. Describe the y intercept. Answer: The y intercept is (0,10) but I'm
asked by Bill Bob 
physics
A force of 80.0 N is required to pull a 25.0 kg wooden toy boat at a constant velocity across a smooth glass surface on Earth. What force would be required to pull the same wooden toy boat across the same glass surface on the planet Jupiter?
asked by edward 
AP Chemistry
what si the procedure to make a 0.10m solution of Potassium Hydroxide during a class lab?
asked by meghan 
Math
1/(b+2)+1/(b+2)=3/(b+1)
asked by Marylyn 
MATH
A local politician claims that 1 in 5 automobile accidents involve a teenage driver. He is advocating increasing the age at which teenagers can drive alone. Over a 2 month period, there are 67 accidents in your city, and only 9 of them involve a teenage
asked by Elie 
Calculus
A 24 foot ladder is leaning against a building. Let x be the distance between the bottom of the ladder and the building and let theta be the angle between the ladder and the ground. a)Express theta as a function of x. cos theta = x/24 theta = arccos(x/24)
asked by CMM 
Trigonometry
rewrite the expression in terms of the first power of cosine. cos^3(x)sin^4(x)
asked by Kayla 
Chemistry
When 2.6 ×103 g of CaCO3 are heated, the actual yield of CaO is 1.06 ×103 g. What is the percent yield? Answer in units of %.
asked by Jack 
Chemistry
Quicklime (CaO) can be prepared by roasting limestone (CaCO3) according to the reaction CaCO3(s) −!CaO(s) + CO2(g) . When 2.6 ×10^3 g of CaCO3 are heated, the actual yield of CaO is 1.06 ×10^3 g. What is the percent yield? Answer in units of %.
asked by Jack 
Chemistry
The halflife of the first order reaction, A to products, is 53.2 s. What was the original concentration, (A)0 in moles per liter, if after 1.8 minutes, the concentration of A is 0.0783 moles per liter? Not sure whether to use integrated rate law or half
asked by Adrianna 
8th grade science
The loudness of sound can be measured in decibels. Do you think loudness is a vector or not? Can you explain why or why not.
asked by Kallie 
Physics
When a stone is thrown into the air it's surface will be in contact with the surrounding air. Analyse the stresses existing between the stone and the surrounding air.
asked by Daddee 
Physics
When a stone is thrown into the air it's surface will be in contact with the surrounding air. Analyse the stresses existing between the stone and the surrounding air.
asked by Daddee 
geometry
A tower casts a shadow of 64 feet. A 6foot tall pole near the tower casta a shadow 8 feet long. How tall is the tower.
asked by Marion 
chemistry
2.00 L of NO(g) at 1.00 atm and 25°C is reacted with 1.00 L of H2(g) at 2.00 atm and 25°C according to the following unbalanced equation. NO(g) + H2(g) ® N2(g) + H2O(g) Which, if either, is the limiting reactant?
asked by josh 
chemistry
4.70 g of sodium bicarbonate (NaHCO3)is dissolved in 500 mL H2O. What is the pH of this solution? Assume constant volume.
asked by joya 
Chemistry
An excess of aqueous AgNO3 reacts with 24.5 mL of 5 M K2CrO4(aq) to form a precipitate. What is the precipitate? Answer: Ag2CrO4 What mass of precipitate is formed? Answer in units of g.
asked by Mary 
Engllish Grammar
Help me to identify the sentence structure of this sentence. "Holmes is called in to help solve a mysterious problem"
asked by Ram 
Statistics and Probability
A research manager at CocaCola claims that the true proportion, p, of cola drinkers that prefer CocaCola over Pepsi is greater than 0.50. In a consumer taste test, 100 randomly selected people were given blind samples of CocaCola and Pepsi. 58 of these
asked by Adam 
life orientation
making responsible choice
asked by mthobysy 
english
HELP!!!!!!! i need a primary and secondary source about Maria Lock.
asked by temp 
math
Set up the general equation from the given statement: m is proportional to the square of n and inversely proportional to both y and x.
asked by cay 
History
In 1968 Democratic Convention in Chicago. What were the protestors so unhappy about?
asked by David 
US History
Question 1 (Multiple Choice Worth 1 points) Around the turn of the century, African Americans moving to cities in the North experienced substantially less racism than did African Americans in the South. more opportunities to become skilled workers than
asked by Andrew 
Maths
determine if this is a function? y= x show working method please
asked by Mathsnewbie 
Math
A boat in calm seas travels 19 km east and 32 km south. Find the distance and direction of the trip, relative to the south. What is the distance? What is the direction? I'm confused about how to solve this problem. Could someone show me the steps?
asked by Lisa 
math
A geologist at point A measures the distance and angle of elevation to two columns of the Glen Rose formation in Texas. If the distance AS=796 ft and the distance AN=850 ft, compute the difference in the heights of the two columns to the nearest foot. What
asked by Anonymous 
AP United States History
Instructions: Use the following documents (most) and your knowledge of the period to answer the question. Question: Evaluate the following statement: "By the time of Abraham Lincoln's election in November of 1860, there was significant support in the North
asked by Isabella 
Physics
How many calories are needed to change 1 gram of 100 degrees Celsius boiling water to 100 degrees Celsius steam?
asked by Aria 
math
how do you write 22th march 2011 in 5 letters without using numbers
asked by thasleem 
English  Native speakers
Thank you for all your help till now! Another questions: Can you please paraphrase the following sentence because I just don't get the meaning of it: In the same interview, she cited her lifelong acquaintance with fear as the reason for her relative
asked by Mark 
Science
Identify the parts of the body in which mitosis occurs
asked by Musibaba 
chemistry
What quantity of solid compound? 300ml of 4% (w/v) ammonium chloride.
asked by karen 
chemistry
What quantity of solid compound? 300ml of 4% (w/v) ammonium chloride.
asked by akshay 
programming
How to integrate / combine two different programs together ??? :/
asked by Nelly 
Microeconomics
Mrs.Simpson buys loaves of bread and quarts of milk each week at prices of $1 and 80 cents, respectively. At present she is buying these products in amounts such that the marginal utilites from the last units purchased of the two products are 80 and 70
asked by Joanne 
english
how does the first ten mins of the film remember the titans capture the audiences attention?
asked by jenny 
Maths
Brent's normal wage is $672 for a 40 hour week. He worked overtime and earned $873.60 in one week. How many hours of overtime did he work if he was paid double time for the overtime worked? Method please
asked by Musibaba 
maths
The parabola y2 = 4ax, where a > 0, and the rectangular hyperbola xy = C2, where C > 0, intersect at right angles. Show that the tangent and normal to either curve at the point of intersection meet the xaxis at T and N where TN = 2pa, where p is an
asked by lia 
Analytic Goemetry
Find the equation of the parabola whose axis is horizontal, vertex on the yaxis and which passes through (2,4) and (8,2).
asked by AJ 
Analytic Goemetry
Find the equation of the parabola with axis parallel to the xaxis and passing through (3/2,1),(5,0) and (1,2).
asked by AJ 
Biochemistry I
Carbohydrates provide organisms with ..... and .....?
asked by Ally 
Chemistry  Energy and Change rev (help+check)
so i was revising for a test next week, and i had problems with the below designing question, so could someone please help me out. 54. The caloric content (energy content) of foods is measured using a bomb calorimeter. A sample of food is burned in oxygen,
asked by Babelii 
chemistry  energy and change rev (help)
the below 2questions i could not answer while revising for this chapter pls help me out a little. 58. When a vehicle is parked in the sunlight on a hot summer day, the temperature inside can approach 55°C. One company has patented a nonCFC propelled
asked by Babelii 
physics
if the initial velocity is .05 m/s and its final is 1.3 m/s then how much energy is lost to friction
asked by bill 
english
what does juliet ask romeo to do and what does she promise to do
asked by rachel 
geometry
find square root of 596 step by step
asked by julian 
algebra
Evaluate each of the functions below at x = 1, 2, 4, 8, and 16. Plot the graph of each function. Classify each as linear, quadratic, polynomial, exponential, or logarithmic, and explain the reasons for your classifications. Compare how quickly each
asked by peg 
Math
One pump can empty a pool in 5 days, whereas a second pump can empty the pool in 7 days. How long will it take the 2 pumps, working together, to empty the pool? Is the answer 2 11/12 days (3 days)
asked by Jaison 
physics
A 13.0 {\rm g} plastic ball is dropped from a height of 2.80 {\rm m} and is moving at 3.20 {\rm m/s} just before it hits the floor. How much mechanical energy was lost during the ball's fall? delta E mech = ____ J
asked by nancy 
Programming
How come anytime I ask a question about programming or SQL on this website...I can never get any help?
asked by Kwadwo 
business managment
how might a walmart representative respond to the negetive criticism that might arise as result of sighting a new facility in a community ranging from traffic congestion to antiunion sentiment to unfair competition?
asked by Aisha 
english
where can I find a ghost song for my book report?
asked by panda 
PreCalculus
"A kite is flying 100ft off the ground, and its line is pulled taut. The angle of elevation of the kite is 43 degrees. Find the length of the line."
asked by bill 
To Katey
This is not a "let's gather opinions" website. If you have a real homework question (and don't expect others to do your thinking for you), please repost correctly, including the correct school subject.
asked by Writeacher 
critical thinking
A paradigm shift brings a fresh way of looking at the world. Give an example from the field of medicine that shows how normal science has experienced a paradigm shift in the last 200 years. For example, at one time, physicians did not believe that germs
asked by rita 
PHYSICS HELP!
A frictionless roller coaster is given an initial velocity of v0 at height h = 24 m . The radius of curvature of the track at point A is R = 31 m. The acceleration of gravity is 9.8 m/s2 a)Find the maximum value of v0 so that the roller coaster stays on
asked by john 
psychology
Is our inability to predict emotion beneficial? Why or why not?
asked by cornell 
Calculus
A wizard with a long beard and bright, flaming eyes places a table in front of you. On the table are two circular rings resembling frisbees. The wizard motions to the table. "We call them Galadriel rings after the great elf of Middle Earth, and we use the
asked by Roberta 
English
Swimming Strokes by Lee Carroll Paragraph 2: When most people think of swimming, they think of the crawl stroke. It involves flutter kicking with your legs as you pull yourself through the water with your arms while alternating your breathing from side to
asked by katelyn 
statistics
a simple random smaple of 55 mathematics teachers were timed as they completed sudoku puzzles. Their mean completion time was 20.3 minutes. The population standard deviation is assumed to be 12 mintues and times vary normally. Find 99% confidence interval
asked by Ashley 
English
Swimming Strokes by Lee Carroll Paragraph 3: The second type of strokethe breast strokis my favorite, since it feels the most natural. Here the kick became very important. In the past, the frog kick was popular, but today this had been largely supplanted
asked by katelyn 
legal terminology
Defamation through speech or another heard medium is known as A. libel. B. slander. C. damage. D. damage. my answer B
asked by angel 
English
Errors in Paragraph 2 in Swimming Strokes by Lee Carroll are and brush for subjectverb agreement, rightarm pull, leftarm pull, rightarm pull and breathe on the left side for parallelism, and your for pronounantecedent agreement. Are these correct?
asked by katelyn 
Honor Stoichiometry
2AgNO3 + BaCl2 ==> 2AgCl + Ba(NO3)2 How many grams of silver chloride are produced from 5 g of silver nitrate reacting with an excess of barium chloride?
asked by Brit 
geometry
The shortest side of a polygon of area 196 sq. in. is 4 in. long. Find the area of a similar polygon whose shortest side is 8 in. long.
asked by alex 
math
In 2010 a city raised $5,999,400 in tax revenue by charging each taxpayer the same amount. For 2011 there has been a net loss of 12 taxpayers, necessitating an increase fo $200 per taxpayer in order to maintain the tax revenue of $5,999,400. How many
asked by John 
English
but are the any errors for pronounanttecedent agreement in paragraph 2 for Swimming Strokes by Lee Carroll
asked by katelyn 
Physics
Two cars crash into each other at an intersection on a very icy road. One 3,000 lb car is traveling 45 mph NW. The other, weighing 2,000 lb, is traveling 30 mph E. After the collision, their bumpers lock together. What is the velocity of the wreck as it
asked by Sara 
history
What defense strategy was developed by the late 1940s because the US lacked sufficient troops to confront the Soviet Army in Eastern Europe? A) atomic detente B) nuclear deterrence C) a combined NATO army D) French and German rearmament
asked by David 
English
Swimming Strokes by Lee Carroll Paragraph 4: One of the most easiest strokes for people who are just learning to swim are the backstroke because the swimmer does not put their faces in the water. Your nose and mouth stay above the water, and they can
asked by katelyn 
English
So in paragraph 2 in Swimming Strokes by Lee Carroll there is only one error in pronounantecedent agreement that begins with To me...getting the rhythm of your breathing down
asked by katelyn 
English
So in paragraph 2 in Swimming Strokes by Lee Carroll there is only one error in pronounantecedent agreement that begins with To me...getting the rhythm of your breathing down Your
asked by katelyn 
English Question [Dante's Inferno]
I've just got a couple questions on the book, what are the two parts of the'' Divine Comedy?'' I've got Cantos, but I still need the other one and I can't fidn it in the paper I'm reading off of. Thanks Allyson
asked by Allyson 
English
Swimming Strokes by Lee Carroll Paragraph 4: One of the most easiest strokes for people who are just learning to swim are the backstroke because the swimmer does not put their faces in the water. Your nose and mouth stay above the water, and they can
asked by katelyn 
English
Identify any improper verbal usage in each sentence. Each sentence has an error. Write the correct form of the verb. We appreciate you not smoking near the building entrance.
asked by Sarah 
English
So in paragraph 2 in Swimming Strokes by Lee Carroll there is only one error in pronounantecedent agreement such as getting the rhythm of your breathing down
asked by katelyn 
Spanish 6th grade
How do I say a ham sandwich or a cheese sandwich? For cheese sandwich is it el sandwich de queso? For ham sanwich is is el sandwich de hamon? I'm not sure how to spell ham
asked by Sally 
Calculus  evaluating integrals
I'm really having trouble with this current topic that we're learning. Any explanations are greatly appreciated. Evaluate the integrals: 1.) ∫ (22cos^2x) dx 2.) ∫ cot3x dx 3.) ∫ ((e^(sqrt x) / (sqrt x) dx))
asked by Amy 
English
I have to compare and constrast the funeral orations of Mark Antony and Marcus Brutus. What I need is a thesis statement for this paper and everything I come up with sounds lame. I'm not getting the message across. Could you help me?
asked by Brett 
Pre Calculus
Verify the identity: cos x + sin x tan x = sec x.
asked by Kim 
General knowlegde
How to write 23th march 2011 in 5 letter without using number
asked by Rahul 
English
I have to compare and constrast the funeral orations of Mark Antony and Marcus Brutus. What I need is a thesis statement for this paper and everything I come up with sounds lame. I'm not getting the message across. Could you help me?
asked by Brett 
math
what is the area of circle with the diameter of 15 feet, rounded to the nearest whole number?
asked by black mamba 
algbra
Evaluate each of the functions below at x = 1, 2, 4, 8, and 16. Plot the graph of each function. Classify each as linear, quadratic, polynomial, exponential, or logarithmic, and explain the reasons for your classifications. Compare how quickly each
asked by peg 
history
many scientists who helped develop the atomic bomb for the United States A.were hired by the joint authority of the U.S. England and the Soviet Union B.made it known that they felt the project should not be kept secret C. had escaped from Fascist and Nazi
asked by sharice 
Math
Rchel has 14 red, 9 blue, and one yellow towel. In haw many ways can the towels be arranged if the towels of the same colour must be side by side?
asked by Tina 
chemistry
is air heavier than carbon dioxide
asked by ilirjana 
IT/210
Assignment: Chapter 5 Programming Problems · Complete Programming Problems 1 and 2. · Provide the analysis, pseudocode and test cases using the template submitted in Week 6 only (no diagrams are required). Chapter 5 Programming Problem Maximum Points
asked by kevin 
History
What defense strategy was developed by the late 1940s because the US lacked sufficient troops to confront the Soviet Army in Eastern Europe? I think that the answer might be= B) nuclear deterrence, is this correct? A) atomic detente B) nuclear deterrence
asked by David 
Music
Can you please check my answers. 1. A lyrical movement or piece for solo voice with instrumental accompaniment is called a/an A. ostinato. B. aria. C. operetta. D. chorus. 2. What is the difference between an oratorio and an opera? A. An opera is staged
asked by Rachel 
English
After writing a paragraph about a movie how would you put three comparative and three superlatives?
asked by Kathy 
Physics
A ball is attached to one end of a wire, the other end being fastened to the ceiling. The wire is held horizontal, and the ball is released from rest (see the drawing). It swings downward and strikes a block initially at rest on a horizontal frictionless
asked by Jacob 
maths
height=6 feet length=5 feet breadth=4 feet what is the volume of the container in liters?
asked by help 
For Lia  question from this morning
I took some time to work out your rather "nasty" Calculus question. Take a look at it and see if it matches your expected result. http://www.jiskha.com/display.cgi?id=1300878253
asked by Reiny 
science
julie carried out a chemical reaction using magnesium and an acid the products of the reaction were magnesium chloride and hydrogen. julie collected a test tube of the hydrogen. describe what she should do to show that it was hydrogen.
asked by chloe 
science
julie carried out a chemical reaction using magnesium and an acid the products of the reaction were magnesium chloride and hydrogen. julie collected a test tube of the hydrogen. describe what she should do to show that it was hydrogen.
asked by chloe 
science
julie carried out a chemical reaction using magnesium and an acid the products of the reaction were magnesium chloride and hydrogen. julie collected a test tube of the hydrogen. describe what she should do to show that it was hydrogen.
asked by chloe 
WRITING SKILLS PART 1
Which of the following topics would lend itself only to a formal style of writing? A. Why Living in the Country Is Better Than Living in the City B. How I Lost 10 Pounds C. Folk Songs I Have Sung D. Psychological Effects of Nuclear Weapons
asked by justine 
math
If you add 2 1/2 plus 3 yards and 6 inches and 6 1/3 yards. How many yards do you have?
asked by JUNIOR C 
math
If you add: 2 1/2 plus 3 yards and 6 inches and 6 1/3 yards. How many yards do you have?
asked by JUNIOR C 
Calculus
Find the limit lim as x approaches (pi/2) e^(tanx) I have the answer to be zero: t = tanx lim as t approaches negative infi e^t = 0 Why is tan (pi/2) approaching negative infinity is my question?
asked by NYCalc 
maths
height=6 feet length=5 feet breadth=4 feet volume of the container=120 cubic feet how do you convert it into litres?
asked by help 
calculus
Let q(x)=(x^4)(e^x). Calculate q'(x). Use q'(x) to determine whether q(5)q(6) (do not use a calculator). Explain your reasoning.
asked by chelsea 
calculus
It is estimated that an annual advertising revenue received by a certain newspaper will be R(x)=0.5x^2+3x+160 thousand dollars when its circulation is x thousand. The circulation of the paper is currently 10,000 and is increasing at a rate of 2,000 per
asked by chelsea 
science
as a satellite goes round the earth the earth turns on its axis. some satellities are always above the same place on the earths surface. how many hours do these satellities take to complete one orbit.
asked by maryjane 
Math
A fence is to be built to enclose a rectangular area of 200 square feet. The fence along three sides is to be made of material that costs 3 dollars per foot, and the material for the fourth side costs 13 dollars per foot. Find the length L and the width W
asked by Thomas 
PROBABILITY
There are 100 patients in a hospital with a certain disease. Of these, 10 are selected to undergo a drug treatment that increases the percentage cured rate from 50 percent to 75 percent. What is the probability that the patient received a drug treatment if
asked by kim 
math
what's the 10%of 150,000.
asked by laura 
Pre Calculus
Find the measure of the central angle, in radians, given the area of the sector as 22.6 cm2 and a radius equal to 3.7 cm. Round your answer to the nearest tenth.
asked by Kim 
physics
A clothes dryer is spinning at 75 rpm. A student opens its door and it comes to rest after rotating through four revolutions. Assume constant deceleration. What was the magnitude of the dryer's angular deceleration?
asked by HARD!!!! 
math
in triangle abc angle b is 5x angle a and c is 16 degree less than 4 times angle a the size of angle a b c in decimal is
asked by elaine 
math
A cross section of a hollow circular pipe shows that its inner diameter is 2 1/10 inches and that the pipe is 3/5 inch thick. What is its outside diameter?
asked by JUNIOR C 
Chem
Determine the maximum g of Ba3(PO4)2 that can be formed from your mass of Na3PO4 . 12H2O
asked by Nina 
physics
A clothes dryer is spinning at 75 rpm. A student opens its door and it comes to rest after rotating through four revolutions. Assume constant deceleration. What was the magnitude of the dryer's angular deceleration?
asked by need help as soon as possible 
chemistry
The redox reaction: O3SOOSO3^2− + Cr^3+ > HSO4^− + Cr2O7^2− is carried out in aqueous acidic solution. Which elements are undergoing changes in oxidation state? I thought it would be S and Cr. For the balanced equation, I got 3O3SOOSO3+Cr^3+ + 13H^+
asked by Eddy 
Math
Can you please check my work since my professor wont. Thanks 50% of 45 solution=90 Predict the height of a woman who's humerus is 40 cm long using H(x)=2.75x+71.48 solution= 181.48cm Trains A and B are traveling in the same direction on parallel tracks.
asked by Mio 
algebra 2
Use the function to answer the question. h(x) = 4x 3 What is the value of h(6)? (Points : 4) 27 21 21 27
asked by jason 
Discrete Math
Use mathematical induction to prove the truth of each of the following assertions for all n ≥1. 5^2n – 2^5n is divisible by 7 If n = 1, then 5^2(1)  2^5(1) = 7, which is divisible by 7. For the inductive case, assume k ≥ 1, and the result is true
asked by Francesca 
English
I had to write a brief review on a movie and needed five adverbs and five adjectives and three superlatives and three comparatives here is what I wrote.The supporting character I was most impressed with was Frenchie. She did a terrific job, both in her
asked by Kathy 
geometry
A circle of diameter 2 inches has its center at the center of a square with 2inch sides. Find the area of the region that is inside the square and outside the circle.
asked by taylor 
science
john has a bike when john gets on the bike, the force on each tyre increases. what happens to the area of tyre in contact with the road?
asked by claire 
MATH
WHAT IS THE TOTAL LENGTH OF 32 PIECES OF WOOD , IF EACH PIECE IS 2 3/16 INCHES LONG?
asked by JUNIOR C 
maths
all the angles in order
asked by katelyn 
english vocabulary spelling
the_____ was a conflagration,causing serveral buildings great damage
asked by nina 
statistics
Indicate whether the given statement could apply to a data set consisting of 1,000 values that are all different. a. The 29th percentile is greater than the 30th percentile. b. The median is greater than the first quartile. c. The third quartile is greater
asked by DEE 
physics
a boy who can generate 500 w runs up a flight of stairs in 5.0 s.how high are the stairs if the boy has a mass of 62 kg.
asked by Anonymous 
chemistry
calculate the enthalpy of formation, per mole, of sucrose, C12H2211O(s). C12H22O11(s) + 12O2(g) > 12CO2(g) +11H2O(l) deltaH=5.65*10^3 kJ
asked by Stacy 
chemistry
calculate the enthalpy of formation, per mole, of sucrose, C12H2211O(s). C12H22O11(s) + 12O2(g) > 12CO2(g) +11H2O(l) deltaH=5.65*10^3 kJ
asked by Stacy 
History
Does anyone know how to create a timeline tracking the major themes/paradigm shifts in American History. I am not sure what the format for a Timeline. Tammy
asked by Tammy 
Chemistry
A penny has a mass of 2.5 g and the moon has a mass of 7.35*10^22kg. What is the mass of 1 mole of pennies? How many moles of pennies have a mass equal to the mass of the moon?
asked by Mal 
Chemistry
A penny has a mass of 2.5 g and the moon has a mass of 7.35*10^22kg. What is the mass of 1 mole of pennies? How many moles of pennies have a mass equal to the mass of the moon?
asked by Mal 
English
Can you check these sentences for me, please? Thank you. 1)The setting of the novel is ambivalent since it seems to lie halfway between England and Scotland. 2) Utterson finds out that Dr Jekyll has created a potion, which enables him to release his evil
asked by Mike 
chemistry abs spectrum and wavelength
Hello, can someone please help me? I'm stuck on a question: I'm doing an analysis of the absorbance of FeSCN2+ at it's max wavelength (i.e. 450nm where abs=0.154)The species I used to make the solution tested were Fe(NO3)3, HNO3, and KSCN. Now, the
asked by mary 
PHYSICS
2 pool balls of equal mass experience a perfectly elastic head on collision. 1 ball is traveling at 2m/s and the other at 3m/s in the opposite direction.What is thier speed just after impact? I know the balls swap speed and change direction but can't find
asked by mark 
Math
A rectangular garden is two feet longer than it is wide. If the width is doubled, fifty extra feet of fencing will be needed to keep out the rabbits. What are the dimensions of the original garden
asked by April 
NEED YOUR HELP ASAP
CAN YOU HELP ME TO ILLUSTRATE QUESTION BELOW.. HOW IS CONTROL SIGNIFICANTLY APPLIED IN BUDGETING?
asked by jessie 
algebra
A research lab is planning to explore the North Pole. Ten members of the lab each have a dog team. There are 56 dogs in all. If there are only 7 and 5dog teams, how many of each will there be
asked by ASAP PLEASE 
geometry
find the perimeter of an equilateral triangle with one side that measures 9.6 centimeters
asked by john 
English
The Victorian Age is known as a time of: A. liberal ideas B. carefree living C. conservative and strict ways of life. D. none of the above I think it's C?
asked by ant 
Statistics
Of 100 people who were given a vaccine,80 developed immunity to a disease.the 98% interval on the proportion of people developing immunity is?need help
asked by Joel 
English
Realism differs from Romanticism in that realism: A. focuses on negative and Romanticism focuses on positive B. portrays life as it is and Romanticism on how life should be. C. uses details and Romanticism uses emotion. D. Both B and C I think it's D?
asked by ant 
AP Calculus
Determine dy/dx if xsiny=artany i did (x)(cosy dy/dx) so far
asked by Leanna 
people
ow did william the conquer laws promote the loyalty of his subject
asked by Alicia 
Math
How do i solve using the elimination method. If the system has no solution or an infinite number of solutions, state this. 2x + 10y = 58 14x + 8y = 140
asked by jackster 
management.......please help me
can you help about this question. thank you how is control significantly applied in budgeting?
asked by jessie 
ScienceMotion
How could an object accelerate while still traveling at a constant speed
asked by mickey 
microbiology
Lactobacillus species ferment glucose, as demonstrated by the snyder test. What other metabolic functions might they perform judging by the list of ingredients: Yeast extract, agar, sodium chloride, pancreatic digestive casein. Thank you
asked by Mary' 
microbiology
Lactobacillus species ferment glucose, as demonstrated by the snyder test. What other metabolic functions might they perform judging by the list of ingredients: Yeast extract, agar, sodium chloride, pancreatic digestive casein. Thank you
asked by MaryAnne 
Math
A rectangular garden is two feet longer than it is wide. If the width is doubled, fifty extra feet of fencing will be needed to keep out the rabbits. What are the dimensions of the original garden
asked by Marylu 
Chemistry
NF3 and PF5 are stable molecules. Write the electrondot formulas for these molecules. On the basis of structural and bonding considerations, account for the fact that NF3 and PF5 are stable molecules but NF5 does not exist
asked by Tyler 
Chemistry
The boiling points of the following compounds increase in the order in which they are listed below: CH4 < H2S < NH3 Discuss the theoretical considerations involved and use them to account for this order.
asked by Ariana 
Math
The body consists of 7/10 water. Is more than 1/2 your body water? Explain.
asked by Tevin 
Calc. checking answer
Determine whether or not each of the following functions is invertible. Give your reasons for believing the function is invertible or not. Please check this for me. I am not sure if I am adequately explaining my answer and if my answer is right. a) y=
asked by C 
History
What aspects of Japanese culture were evident in samurai training?
asked by Jess 
chem
24. Hydrogen peroxide can decompose to water and oxygen according to: 2H2O2 (l) + > 2H2O(l)+ O2 (g) ^ H = 196 kJ What is the enthalpy change accompanying the reaction of 5.00 g H2O2 (l) according to the above mentioned reaction ?
asked by janet 
chemistry
What two metals from the lanthanides of the activity series will not generate hydrogen gass when treated with an acid?
asked by simonne 
chemistry
What two metals from the lanthanides of the activity series will not generate hydrogen gass when treated with an acid?
asked by simonne 
chemistry
24. Hydrogen peroxide can decompose to water and oxygen according to: 2H2O2 (l) + > 2H2O (l) + O2 (g) ^ H = 196 kJ What is the enthalpy change accompanying the reaction of 5.00 g H2O2 (l) according to the above mentioned reaction ?
asked by janet 
Chemistry
What makes Permanganate such a good oxidizing agent?
asked by Jane 
english
what significance do the lions on the beach have for the old man, from ernest hemingway the old man and the sea?
asked by cc 
Algebra
using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this. 3x + 24y = 24 27x – 15y = 15
asked by Miguel 
Math
If the perimeter of the rectangular ball field is 1 kilometer which of the following could be the field's dimensions? L=312m W=188m or L= 1/2 m W = 1/2 m
asked by Alex 
Science
If the perimeter of the rectangular ball field is 1 kilometer which of the following could be the field's dimensions? L=312m W=188m or L= 1/2 m W = 1/2 m
asked by Alex 
Spanish
64. Les sirven los frijoles refritos a. a mí b. a él c. a ellos d. a nosotros C? I don't really get it.. 65. ¿Qué _____ a Uds.? a. le falta b. les falta c. le faltan d. nos falta Also don't get this one. 66. "¿Van a salir en seguida?" "No, ya _____."
asked by mysterychicken 
geometry
donald's garden is rectangular the garden is 14 metres long it's perimeter is 47 metres how wide is the garden
asked by cynthia 
PHYSICS
A 33 cmtall, 6 cmdiameter plastic tube has a sealed bottom. 266 g of lead pellets are poured into the bottom of the tube, whose mass is 45 g, then the tube is lowered into a liquid. The tube floats with 5 cm extending above the surface. What is the
asked by Alexia 
A & P
Trace the anatomical pathway of the neural signal that must be sent from the primary motor area of the brain to the appropriate muscles of the arm and shoulder in order to lift a glass of water to drink.
asked by Anonymous 
math
A rectangular garden is two feet longer than it is wide. If the width is doubled, fifty extra feet of fencing will be needed to keep out the rabbits. What are the dimensions of the original garden
asked by Marylu 
geometry
216 in cubed is the volume of a figure 27 in cubed is the volume of a similiar figure what is the scale factor?
asked by Nasser 
Calculus Please Help
Let f(x) = x^3  x^2 + x  1. Find an equation for tangent line to f at x = 2.
asked by Abi 
chemistry
how do you prepare 400 mM 100ml H2SO4 from 1M H2SO4
asked by hadja 
Geometry
I need points for making a 13ft.x 18ft eliptical
asked by Steve 
geometry
this arc contains 36 degrees and its length is 7 units what is the cicruference
asked by Anonymous 
micrbio
Lst possible reasons why the slite test is not appropriate for detecting free coagulase.
asked by microbio 
Science
Do neurons send electrical messages to the brain to tell the body what to do?
asked by Michelle 
PreCalc
I'm not sure how to solve these with calculator. sec x = 2 , π ≤ x ≤ 3π sinθ=0.1473, 0°≤θ≤90° cosθ=0.7563, 0°≤θ≤90°
asked by Sam 
math
alexis sells stuffed animals.she sells a stuffed elephant for $34.95,and the sales tax is 8% of the sales price.about how much is the sales tax on the elephant?
asked by jasmine 
HELPmath
Of one hundred students surveyed: 70 like basketball, 52 like football, 61 like baseball, 29 like baseball and football, 39 like football and basketball, 42 like basketball and baseball, 27 like all three sports. If a student is chosen at random, what is
asked by Marylu 
English
I urgently need to find a site where I can listen to the last Chapter of Dr Jekyll and Mr Hyde by Stevenson. I really hope you can help me! Thank you very much.
asked by Mike 
History
The evolution of the sociopolitical milieu during the colonial period, including Protestant Christianity's impact on colonial social life. Can any one give me some insite? Tammy
asked by Tammy 
math
If a 4th grade with 140 students has 3 boys for every 4 girls how many are girls? how many are boys?
asked by lovecaandy 
trigonometry
tanxcotx/tanx+cotx=12cos squardx
asked by wayne 
Math
tan(x)=5 sin(x) for interval π < x < π
asked by Abby 
science
what r some good websites to look up river streams ponds lakes wetlands marsh and swaps plants and animals
asked by kate 
Chem
Some ethylene glycol, HOCH2CH2OH, is added to your car's cooling system along with 4.4 kg of water. If the freezing point of the waterglycol solution is 15.0°C, how many grams of HOCH2CH2OH must have been added? I used the equation: 15 celcius = 1 x
asked by Mark 
chemistry
What is the percent by mass of NaHCO3 in a solution containing 60 g of NaHCO3 dissolved in 500 mL of H2O
asked by brooke 
chemistry abs spectrum and wavelength analysis
Hello, can someone please help me? I'm stuck on a question: I'm doing an analysis of the absorbance of FeSCN2+ at it's max wavelength (i.e. 450nm where abs=0.154)The species I used to make the solution tested were Fe(NO3)3, HNO3, and KSCN. Now, the
asked by mary 
math
Use a tangent function to estimate the grade resistance of a 2200lb car travelling on a 2.4° grade. Round your answer to the nearest pound.
asked by Meg 
math
What are four ways you can make $3.85 using one type of coin
asked by sam 
math
Use a tangent function to estimate the grade resistance of a 2200lb car travelling on a 2.4° grade. Round your answer to the nearest pound.
asked by Meg 
MATH
350 lbs of flour were poured into 4 3/8 lbs packages. how many packages were filled?
asked by JUNIOR C 
Grammar
Can you help me with these sentences.Review the following sentences. Some of them are correct, whereas others contain an error with a commonly confused word. 1.The diplomats are doing what they can to restore peace. 2.I should of written down where I last
asked by Lacey 
geometry
what is the length of any diagonal of a regular pentagon with a side of 20mm ?
asked by Katie 
algebra
how do I factor a polynomial completely, please tell me step by step.
asked by Kreidan 
social studies
i am a 7th grd and i have to do a three page eassy on been respectful it due by 3/23/11
asked by rose 
math
Of one hundred students surveyed: 70 like basketball, 52 like football, 61 like baseball, 29 like baseball and football, 39 like football and basketball, 42 like basketball and baseball, 27 like all three sports. If a student is chosen at random, what is
asked by Marylu 
precalculus
A population doubles every 30 years. Assuming exponential growth find the following: annual growth rate: % continuous growth rate: %
asked by josh 
reading
should have been 9 letters and the 6th one is a U
asked by John 
management, subject
please is anyone can help me this question. .different management function and discuss each function.
asked by jessie 
microbio
Why is it important to use fresh cultures in Coagulase test than in a test medium?
asked by microbio 
physics
A certain roller coaster has a circular, vertical loop of radius 10 meters, such that at its top the riders are upside down. How fast does the roller coaster move at this point if the riders feel perfectly weightless when passing the top of the loop?
asked by peter 
math
What does rule mean in second grade math
asked by Maeve 
physics
a very thin piece of copper wire has an electrical resistance of 20,000 Ohms. You connect its ends to a regular 2.0 Volt battery. How much power does it draw? Let's assume that this little piece of wire initially contained one trillion (that's a one with
asked by john 
geometry
what is the are of a parallelogram if it is 2 feet tall and 6 feet wide
asked by alle 
reading
need help with a crossword puzzle the words given are hale; hail;;bunt it has 5 letters and the last letter is T
asked by John 
math
simplify (6x^37x^2+3x+9)/(3x+9)
asked by keith 
language
From a story,how do you draw a conclusion
asked by jordan 
Calculus
Fill in the following table, where E(x) denotes the error in approximation of f(x) by T(x). x  2 x 3 2.1 2.01, 2.001 f(x) T(x) E(x)
asked by Cecille 
chemistry
briefly explain why excess HCl and NaOH solutions must be collected for treatment before disposal, but the titration solution from a completed titration can be safely poured into the drain, diluting with a large amount of water.
asked by Anonymous 
survey of economics
How would you compute changes in Microsoft’s volume of output from one year to the next? How would price changes affect your computations?
asked by sue 
chemistry
25ml of 0.05M of NaOH and the average volume of HCl is 17.7ml after titration and the concentration of HCl is 0.1028M. Find the [OH] eq (from titration). How do u solve this...
asked by roshan 
chemistry
What mass percent of a solution with 28.5 g of H2O2 and 300.0 mL of water?
asked by Anonymous 
Chemistry
How can you measure 20 mg. of salt?
asked by Jamie 
history
According to legend these people fought a long war with the people of troy;a city in turkey. What was the name of the war.(has to do with Anceint Greece)
asked by renee 
math
How can the teacher differentiate instruction when teaching number sense or mathematical operations? Please remember differentiate is for all levels (high, medium, low, ESL, and others)
asked by Anonymous 
Applications
Determine the median of the following numbers25,28,22,27,25,20/30,23,27, and 29
asked by Jessica 
physics
Analyze the radial distribution of the Hatom at the 2s state. How are the maxima situated with respect to the minimum? Is the “golden ratio” involved?
asked by sweety 
physics
Consider two noninteracting Fermions (halfinteger spin) confined in a “box”. Construct the antisymmetric wave functions and compare the corresponding groundstate energies of two systems; one with particles of identical spin and the other with
asked by sweety 
chemistry
Analyze the radial distribution of the Hatom at the 2s state. How are the maxima situated with respect to the minimum?
asked by everest 
Acids and Bases
NaOH was added to 1.0 L of HI(aq) 0.40 M. Calculate H3O in the solution after the addition of .14 mol of NaOH. Calculate H3O in the solution after the addition of 0.91 mol of NaOH.
asked by Kaitlyn 
English
Can you please help me check these sentences? Thank you very much. 1.Some schools valued their pupils' athletic prowess more than their scholarly ones. 2.Factory owners were also oblidged by legislation to teach their duty (? they apprentices). 3.One of
asked by Mike 
Science
How do you separate a mixture of salt,pepper, and iron filings
asked by Emily 
math
Milan's gas tank is 1/5 full. After he buys 6 gallons of gas, it is 7/10 full. How many gallons can Milan's tank hold?
asked by Jen 
Math
What angle equal to 6/8 turn?
asked by Gina 
Chemistry
Is [PF5Cl] polar?
asked by cassandra 
chemistry
100ml of 0.05M of NaOH is added to 0.5g of Ca(OH)2. find the [OH] (from Ca(OH)2)
asked by roshan 
Calculus Please Help
Let f(x) = x^3  x^2 + x  1. Find an equation for tangent line to f at x = 2.
asked by Cecille 
math
How much intrest will u earn on a 50 0 deposi placed in a asavings accoun for 6 months if you are paid at a simple intrest rate of 5 percent
asked by Anonymous 
Chemistry
Phosphorous trichloride (PCl3) is produced from the reaction of white phosphorous (P4) and chlorine: P4(s) + 6Cl2(g) ! 4 PCl3(g) . A sample of PCl3 ofmass 280.7 g was collected from the reaction of 70.86 g of P4 with excess chlorine. What is the percentage
asked by Jonathan 
Chemistry
How many atoms of each element are present in five formula units of calcium permanganate?
asked by Mary 
Chemistry
2NaN3(s) −> 2Na(s) + 3N2(g) . If 0.65 mol of NaN3 reacts, what mass of nitrogen would result? Answer in units of g. Step by step with answer please! I'm begging!
asked by Harry 
English
Can you please chech these very last two sentences of the day? Thank you. I'm playing on my Nintendo DS these days. Where are you playing these days? Darwin eliminated the possibility of the creation also if this idea conflicted with the teachings of the
asked by Mike 
Chemistry
Phosphorous trichloride (PCl3) is produced from the reaction of white phosphorous (P4) and chlorine: P4(s) + 6Cl2(g) > 4 PCl3(g) . A sample of PCl3 of mass 280.7 g was collected from the reaction of 70.86 g of P4 with excess chlorine. What is the
asked by Harry 
Physics
The engine weighs 4500 newtons and it is lifted 1.5 meters up by the block and tackle system. To accomplish this, the mechanic must apply a force of 225 newtons while pulling a total of 37.5 meters of chain through the block and tackle pulley system. What
asked by John 
AP Calculus
I previously posted this but had a mistake in it. Determine dy/dx if xsiny=arctany i did (x)(cosy dy/dx)+(1)(siny)=dy/(1+y^2) so far
asked by Leanna 
3rd Grade Science Definicions
It tells the location of somethind.It is spesific.Every place on a map has this.What is it?
asked by Kristiana 
math
Two of these statements are false. Identify them. 1.4x12>3x15 2.96/231+13 Answers: 1. 48>45 2. 4844 48
asked by Mona 
Soc120
I have to start writing an essay for my sociology class and this is the topic I have to write about: "Racial discrimination and Hispanics in the United States" I have to come up with 1800 words on this topic I was wondering if you could help me come up
asked by Nikol 
Calculus
Determine whether or not each of the following functions is invertible. Give your reasons for believing the function is invertible or not. Please check this for me. I am not sure if I am adequately explaining my answer and if my answer is right. a) y=
asked by C 
History
What was the second most big city state in greece. now the first is sparta but what is the other!!!
asked by Alyssa 
English
I have a question if these are correct.. Thank you for your help! 11. The officers are government officials. (LV= are, Pn=officers) 12. Their presence was necessary in the far north county in the early days. (lv= was, Pa=necessary) 13. Now they are famous
asked by ann 
math
A quiz has 10 questions Aaron gets 3/5 of the questions right. How many questions did Aaron get right?
asked by Kaiya 
chemistry
How do I calculate 50ml of a 50mM sodium momophosphate buffer solution
asked by PAUL 
Spanish
Forma oraciones para saber la historia de amor entre Alicia y Emilio. Ojo con el uso del pretérito Model: Alicia y Emilio / conocerse / en un café Alicia y Emilio se conocieron en un café. 1.no hablarse / pero / ellos mirarse profundamente
asked by Christopher 
geometry
A guy wire is attached to the top of a 75 meter tower & meets the ground at a 65 degree angle. How long is the wire?
asked by Abby 
geometry
in a parallelogram abcd=28,bc=45,and ac=53. is the parallelogram a rectangle?
asked by rocio 
Physics
A coaxial transmission line has a solid inner conductor of radius a and a thinwalled outer conductor of radius b. The medium between the conductors has permeability (Mu)0. Find the inductance per meter of length of the line (a) if all current of the inner
asked by sandhu 
Chemistry
At what tempature will a 3.0 m solution of sodium fluride freeze?
asked by Hailey 
chemistry
how to find mass percentage
asked by rosa 
Chemistry
Calculate the boiling tempature for a solution which contains 0.325 mol of calcium phosphate (Ca3(PO4)2) dissolved into 240.0 g of water.
asked by Hailey 
math
complete the table: y= x  +4 x: +4,0,4.6 y: ?,?,?,?
asked by Lucas 
chemestry
balance the equations (single displacement) 1. zinc + Iron(II) Chlorine > 2. Zinc + Hydrogen Chlorine >
asked by celina 
biology
The primary reaction catalyzed by catalase is the decomposition of hydrogen peroxide to form water and oxygen, which occurs spontaneously, but not at a very rapid rate. Write a balanced equation for this reaction. (Remember that catalase is not a reactant
asked by chaja 
Language Arts
The Fairfield Rockets were true to their name last night. They blasted off early in the first quarter and didn't slow down until the final buzzer in the fourth.
asked by Lisa 
English
Have a question on Simple Verb Tenses. Need to reswrite each sentence, using the correct form of the verb in parentheses with s,ed,or will.. Thank for looking and helping me~~ 1. Long ago Plutarch___ stories of Greeks and Romans. (RELATE) Answer=related 2.
asked by Emily 
math 099
a rancher wants to use 300 feet of fencing to enclose a rectangular area of 4400 square feet. what dimensions should the rectangle have?
asked by Anonymous 
Math
Find the missing dimensions for each threedimensional figure to the nearest tenth given the volume and other dimensions. I'm not understanding the cones too much. r=5in., v = 487in.3 How do I work it, given only the radius
asked by Nia 
Language Arts
Neither forward could be stopped. These two lit up the scoreboard with 54 points. In fact, the Rockets scored so many points that the scoreboard shorted out trying to keep up. The Rockets were just too hot to handle. The best play of the game came in the
asked by Lisa 
bio chemistry
prepare 1M 100 ml H2SO4, density 1.84
asked by hadja 
CHEMISTRY URGENT!!!
Determine the pH (to two decimal places) of the solution that is produced by mixing 30.3 mL of 1.00×104 M HBr with 829 mL of 5.77×104 M Ca(OH)2.
asked by Colin 
College Chemistry
Calculate the pH of a solution prepared by mixing 250.mL of 0.174 molal aqueous HF (density=1.10g/mL) with 38.7g of an aqueous solution that is 1.50% NaOH by mass (density= 1.02g/mL).
asked by Anonymous 
biology
What effect did boiling the liver have on the reaction? Why?
asked by chaja 
social studies
What was the Fascist Party and what were their beliefs?
asked by t.n.t 
bio chemistry (please help)
prepare 1M 100 ml H2SO4. 98% H2SO4, density 1.84
asked by hadja 
geometry
calculate the area, surface area, and volume for a right rectangular prism with a length 2cm, height 5cm, and width 3cm
asked by Amata 
science
determine the correct amount of sodium hydroxide needed to react with 1.0g iron (III) chloride.
asked by joyce 
MATH
You can choose chocolate,strawberryor vanilla frozen yogurt and red,blue,green sprinkles. A sundae has one yogurt flavor and two different colora of sprinkles. How many different kinds of sundaes can your order? List them Is there 9 different possible kind
asked by Themathperson 
chemistry
Calculate the [H3O + ] for 0.42 M HCl. Answer in units of M.
asked by Brian 
BIOLOGY
What happen when you put muscle in acetic acid
asked by chaja 
us history
after containment what would be considered the us foreign policy
asked by bill 
Math
Check all that apply5/3 is the reference angle for: 2pi/3 15pi/3 7pi/3 19pi/3
asked by Sebastian 
Spanish
Forma oraciones para saber la historia de amor entre Alicia y Emilio. Ojo con el uso del pretérito. Modelo: Alicia y Emilio / conocerse / en un café Alicia y Emilio se conocieron en un café. no hablarse / pero / ellos mirarse profundamente No se
asked by Christopher 
Statistics
The amount of fill(weight of contents)put into a glass jar of spaghetti sauce is normally distributed with mean=850g and standard deviation=8g.the probability that a random sample of 24 jars has a mean weight greater than 848g is?need help
asked by Joel 
Statistics
The null hypothesis,H0:u=48,was tested against the alternative hypothesis,H1:u>48.A sample of 75 resulted in a calculated pvalue of 0.102.if standard deviation=3.5,the value of the sample mean is?need help
asked by Joel 
math
a rectangle is 7 ft by 9ft. a second is similar to the first with a perimeter of 260 ft. what are the dimensions of the second rectangle?
asked by kim 
Chemistry
What is the volume of 0.129 M HCl(aq) re quired to neutralize all of the hydroxide ions in 46 mL of 0.216 M KOH(aq)? Answer in units of mL. Answer: 77.0232 What is the molarity of Cl− ions at the stoichiometric point? Answer in units of mol/L. What is
asked by Matthew 
Math
Colors are blue, pink,red, brown,black Styles are cardigan, crewneck, v neck What is the probability of choosing a brown sweater at brown?
asked by NeedsHelp 
pre calc
Solve the lograthmic function: ln(X+5) = ln(X1)  ln(X+1) The answer has no solution but I do not know how to come to that answer. Help is greatly appreciated!
asked by Laura Grace 
math
there are 80 fourth graders in school of these, 35 were boys. what fractional part of the fourth graders were girls
asked by mar 
English
if I have a quote that starts at the beginning of a sentence would I leave it as a capital letter OR lowercase letter? Ex: On ....,"He saw ...." OR On ....,"he saw ...." in the source where i'm quoting it from: "He" would be the first word in the sentence
asked by Amy 
Physics
A pulley system has an efficiency of 78.0 per cent. The acceleration of gravity is 9.81 m/s2 . How much of the rope must be pulled in if a force of 469 N is needed to lift a 52 kg desk 2.78 m?
asked by McCaleb 
Physics
A 305 kg piano slides 4.0 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.40. (a) Calculate the force exerted by the man. (b) Calculate the
asked by Robert 
math
6n219n+15=o (the 2 is an exponent) idk how 2 do it the teacher told us how but didn't show us plz help
asked by Angel 
math
What percentage of 13,000.00 is 8,000.00
asked by dan 
Chemistry
A solution contains a mixture of Cl and Br ions. Can both be positively identified? Briefly explain and write appropriate equations to support your answer.
asked by Leah 
Math
given the fonction: y=3x^25x and x=g(t)derivable as g(14)=4 and g'(14)=2 calculate dy/dt in t = 14
asked by Ralph 
Chm General 2
if a student doing an experiment failed to dry the KHP before using it to standarize the NaOH solution. A) Would her calculated molarity of the NaOH solution probably be too hight or too Low?
asked by Karla 
Pre Calc
tan(x)=5 sin(x) for interval π < x < π A) 0, 1.571 B) 1.571, 0, 1.571 C) 1.369, 0, 1.369 D) 0, 1.369
asked by Abby 
math
idk how 2 do it the teacher told us how but didn't show us plz help (the 2 is an exponent) 3b^2+b10=0
asked by Bella 
Math2
Given f, a derivable function and y = f (x)^3 + 40√(f(x)+12) . Knowing that f(4) = 4 and that dy/dxx=4 = 14 , calculate f’(4)
asked by Ralph 
Math
Find the probability. You roll two odd numbers and pick a vowel ( when you roll two number cubes and pick a letter of the alphabet at random)
asked by NeedsHelp 
chemistry
prepare 1M 100 ml H2SO4. 98% H2SO4, density 1.84
asked by Anonymous 
Math
You toss tails and roll an even number ( when you toss a coin and roll a number cube) Find the probability. I thought It was 1/3 but I think that is wrong.
asked by Lala 
CIS
I have the pseudocode but i am confused with this question. Modify the Pay Calculator design from Week 3 to include a loop that allows the user to continue processing employee pay until the program user wants to stop or the maximum number of employees is
asked by Nyna 
chemistry
O3SOOSO3^(2−) + Cr^(3+)+ > HSO4^(1) + Cr2O7^(2). Could someone balance this redox reaction for me? I can't figure it out. Thanks
asked by Eddy 
stoichiometry
6mols of N2 are mixed with 12mol H2, according to the following equation. N2+3H2> 2NH3 a) which is the limiting reactant? B) which chemical is in excess? c) how many moles of excess reactant is left over? d) how many moles of NH3 can be produced? e)if
asked by jairo sanchez 
Chemistry102
what is the ph solution obtained by mixing 25.00 ml of 0.250 ml HCl and 25.00ml of 0.125M NaOH
asked by Christian 
stoichiometry
6mols of N2 are mixed with 12mol H2, according to the following equation. N2+3H2> 2NH3 a) which is the limiting reactant? B) which chemical is in excess? c) how many moles of excess reactant is left over? d) how many moles of NH3 can be produced? e)if
asked by jairo sanchez 
stoichiometry
6mols of N2 are mixed with 12mol H2, according to the following equation. N2+3H2> 2NH3 a) which is the limiting reactant? B) which chemical is in excess? c) how many moles of excess reactant is left over? d) how many moles of NH3 can be produced? e)if
asked by Anonymous 
Spanish
no hablarse / pero / ellos mirarse profundamente No se hablaban pero ellos se miraban profundamente. inmediatamente / la muchacha y el muchacho / enamorarse La muchacha y el muchacho se enamoraron inmediatamente. ellos / abrazarse / y / besarse / aquella
asked by Christopher 
chemistry
How many sodium ions are present in aqueous sodium phosphate if the sample size is 500 milliliters and the concentration is 2 Molarity?
asked by Anonymous 
Chemistry
Most chlorides are soluble in water. Give all of the formulae for the insoluble chlorides.
asked by Bruce 
physics
a 1 kg mass is attached to a spring hanging vertically and hangs at rest in the equilibrium position. the spring constant of the spring is 1 n/cm. the mass is pulled downward 2 cm and released. what is the speed of the mass when it is 1 cm above the point
asked by Jess 
Chemistry
Give the molecular, complete ionic, and net ionic equations for the reaction of barium nitrate and sodium sulfate.
asked by Bruce 
Calc  Evaluating Integrals
1.) upper bound: pi lower bound: 0 8sinx / sqrt(54cosx) dx 2.) upper bound: sqrt 3 lower bound: 0 4x / sqrt(x^2 + 1) dx 3.) upper bound: 1 lower bound: 1 (dx) / (3x4)
asked by Amy 
physics
at what altitude should a satellite be placed into circular orbit so that its orbital period is 48 hours? the mass of the earth is 5.976x10^24 kg and the radius of the eatrh is 6.378x10^6 m.
asked by Jess 
Chemistry
Does the mixing of copper (I) nitrate with sodium iodide produce a precipitate? If so, give the molecular equation.
asked by Bruce 
Chemistry
Is it possible to have an acid/base reaction and produce a precipitate as a product as well? If yes, provide an example.
asked by Bruce 
Chemistry
Give the molecular, complete ionic, and net ionic equations for the combination of potassium chloride and magnesium sulfate.
asked by Bruce 
physicstelescope
The Hubble Space Telescope (HST) can resolve objects that have a small angular separation because there is no atmospheric distortion of the light. (i.e. The HST has excellent resolving power.) Its 2.4mdiameter primary mirror can collect light from
asked by Trace 
Chemistry
According to the BronstedLowry definition of acids and bases, is water an acid or base? Provide examples to support.
asked by Bruce 
Chemistry
Give the molecular, complete ionic, and net ionic equations for the reaction of phosphoric acid and magnesium carbonate.
asked by Bruce 
Chemistry
How many grams of water are produced from the reaction of 1L of 2 molarity hydrochloric acid with 1L of 2 Molarity barium hydroxide?
asked by Bruce 
Chemistry
What is the concentration of an acetic acid solution if 11.2 mL of 1.002 Molarity sodium hydroxide solution is needed to completely neutralize 5.1 mL of the acid?
asked by Bruce 
Chemistry
Give the molecular, complete ionic, and net ionic equations for the reaction of sulfuric acid and barium hydroxide.
asked by Bruce 
Chemistry
Give the molecular, complete ionic, and net ionic equations for the reaction of ammonia with hydrochloric acid.
asked by Bruce 
Chemistry
How many mL of 1.211 Molarity sulfuric acid is required to completely neutralize 10.0 mL of 3.210 Molarity calcium hydroxide?
asked by Bruce 
maths
how to convert 1kg 400gms into mixed fraction
asked by Anonymous 
Biology
Will iodine react with sucrose or glucose? I would say no, because it reacts with starch, a polysaccharide, and glucose is a monosaccaride and sucrose is a combination of fructose and glucose, two monosaccharides. Am I right? Why or why not? How does
asked by Mary 
biochemistry
If glucose is labeled with 14C in position C1, where does this label endup if the glucose goes through the oxidative phase of the pentose phosphate pathway?
asked by brian 
biochemistry
4) phosphofructokinase1 strongly inhibited by an ATP analog in which the oxygen atom joining the ƒÒ and ƒ×phosphorus atoms is replaced with a methylene group?
asked by brian 
Chemistry (please help!!)
a stressed chemistry student is hyperventilating into a paper bag. The student stops to wip his brow after a few breaths, and the bag is at 5.7 KPa and the temperature in the lecture hall is 24 degrees C. The bag is 0.75 L full. The student then goes at it
asked by Celine 
biochemistry
Enolase catalyzes the conversion of 2phosphoglycerate (2PG) to phosphoenolpyruvate (PEP). The deltaG’o for this reaction is +1.8 kJ/mol. If [2PG] = 0.045 mM and [PEP] = 0.034 mM, what is the actual free energy, deltaG?
asked by brian 
Math
A boat in calm seas travels 19 km east and 32 km south. Find the distance and direction of the trip, relative to the south. What is the distance? What is the direction? I'm confused about how to solve this problem. Could someone show me the steps?
asked by Lisa