Questions Asked on
October 16, 2007

CHEMlast part prob.
Aluminum reacts with chlorine gas to form aluminum chloride via the following reaction: 2Al(s) + 3Cl2(g) > 2AlCl3(s) You are given 19.0g of aluminum and 24.0g of chlorine gas. a)If you had excess chlorine, how many moles of of aluminum chloride could be
asked by K 
accounting
List the following steps of the accounting cycle in their proper order a. Preparing the post closing trial balance b. postint the journal entries c. journalizing and posting adjusting entries d. preparing the adjusted trial balance e. journalizing and
asked by shelly 
Chemistry
mass of empty flask with stopper = 32.634 g mass of flask with water and stopper = 59.479 g density of the water = 0.9973 g/cm^3 mass of water = 26.845 g volume of water = 26.918 cm^3 the flask is then emptied and an unknown substance is added mass of
asked by Vanessa 
science
whats the formula for dicarbon tetrahydride
asked by Anonymous 
Physics
A 50kg skier starts from rest from the top of a 100m slope. What is the speed of the skier on reaching the bottom of the slope? Neglect friction. would i do this: =PE + KE =mgh +1/2mv^2 =50(10)(100) + 1/2 (50)v^2 =50000 +25v^2 =2000 =v^2 44.7m/s =v Is this
asked by Andrea 
Physics
An athlete whirls a 7.40 kg hammer tied to the end of a 1.1 m chain in a horizontal circle. The hammer moves at the rate of 1.4 rev/s. What is the centripetal acceleration of the hammer? What is the tension in the chain?
asked by Karen 
physics questions
can you please check my answers? 1.what would be the path of the moon if somehow all gravitational foces on it vanished to zero? would the path of the moon be arched. 6. is the force of gravity stronger on a crumpled piece of paper than on a indentical
asked by Jennifer 
help... probability
The Smith family has 4 children that are all girls. What is the probability that the next one will be a girl? You plan on having four children and you want all boys. If you have children, what is the probability you will get four boys?
asked by maggie r 
Literal Equation
how to solve 6=hj+k for j
asked by Ciara 
Physics
A pitched ball is hit by a batter at a 45 degree angle. It just clears the outfield fence, 97 m away. Find the velocity of the ball when it left the bat. Assume the fence is the same height as the pitch.
asked by Anonymous 
financial management
A treasury bond that matures in 10 years has a yield of 6%. A 10 year corporate bond has a yield of 9%. assume that the liquidity premium on the corporate bond is 0.5%. What is the default risk premium on the corporate bond?
asked by julie 
geology
suppose you have a sample of clamshell at a paleoindian site and you measure the 14c activity of aa 100gram sample of carbon as 320 disintegretions per scond (or 3.2 disingtegrations per gram of carbon per second). a. what was the activity(in
asked by jon 
algebra
solve ax  5 = b for a
asked by cassidy 
Physics
A baseball is hit at 26.0 m/s at an angle of 58.0 degrees with the horizontal. Immediately an outfielder runs 4.30 m/s toward the infield and catches the ball at the same height it was hit. What was the original distance between the batter and the
asked by Susan 
chemistty
Pure (R)2bromo1fluorobutane reacts with sodium cyanide in aqueous ethanol to form pure (R)2(fluoromethyl)butanenitrile. CH3CH2CHCNCH2F2(fluoromethyl)butanenitrile a. What is the probable mechanism of this reaction? Explain your reasoning. I think
asked by levy 
Physics
A 50kg skier pushes off the top of a hill with an initial speed of 5m/s. Neglect friction. How fast will he be moving after dropping 20m in elevation? I was wondering if i did this problem correct. PE + KE_f = KE_i mgh +1/2mv_f^2 =1/2mv_i^2 50(10)(20) +
asked by Andrea 
Social Studies
how is limited and unlimited governments alike
asked by Victoria 
PHYSICS
A ball is thrown from a point 1.2 m above the ground. The initial velocity is 19.8 m/s at an angle of 34.0° above the horizontal. (a) Find the maximum height of the ball above the ground. (b) Calculate the speed of the ball at the highest point in the
asked by STEPH 
algebra
solve the porportion 2/7 = x/42 the answer is below, but which one A.) 1/2 B.) 12 C.) 2/7 D.) 6 Can you help me pleeezz
asked by anne 
Math
Train A and train B leave station going in opposite directions. Train B leaves 1/2 later than train A. Train B travels 80km/h faster than Train A. In 2 hours the trains are 3200KMs apart. How fast is each train traveling.. thank you
asked by Lucas 
social studies
what is the difference between unlimited government and limited government?
asked by Victoria 
phy.
Larry weighs 300 N at the surface of the earth. what is the weight of the earth in the gravitational field of Larry? force= GMm/d^2 would i set it up like force= (9.8m/s^2)(300 N)? an astronaut lands on a planet that has twice the mass as earth and twice
asked by Julie 
calculusI
If $700 is borrowed at 8% interest, find the amounts due at the end of 2 years if the interest is compounded as follows. i know how to solve this problem but i don't know what to plug in for n in the formula for finding the amount quarterly and hourly. plz
asked by britteny 
Social Studies Repost for Samantha
Social studies  Samantha, Tuesday, October 16, 2007 at 7:02pm i need some sites on travel and tourism in Spain
asked by Ms. Sue 
physics problems
please check my answers. 17. explain how the sport of pole vaulting dramatically changed when flexible fiberglass poles replaced still wodden poles? the fiberglass poles had more momentum and PE than still wooden poles? 20. does the international space
asked by Jess 
physics homework
can you please check my answers? 10. when rewinding a an audio tape or vdieotape, one reel winds fastest at the end. which reel is this? why does it speed up? The reel is the left and it speeds up because of its greater rotational intertia is near the
asked by dawn 
Ap Calc AB
Find the equation of the line normal to the curve at (0,0). (Normal lines are perpendicular to the tangent lines) 2y + sinx = xcoxy I found the derivative to be (cosy  cosx)/ (2+ xsiny) then the slope tangent is 0...then the slope perpendicular is
asked by Student 
Algebra
3Z+6Z+7=294 Please shoe how to solve this Problem.
asked by Rusty 
Physics
Can you please help me with the following questions? please. 1. how much work do you do on a 25kg backpack when you walk a horizontal distance of 100 m? I got 2,500 J 4. if you friend pushes a lawnmower four times as far as you do while exerting only
asked by Donna 
Jake
If 142.38 g of l water at 21.7 degrees C is placed into a syrofoam cup with 174.36 g of ice at 27.5 degrees C what would be the final temperature of the entire contents at equilibrium? If it is partially frozen, how many g of the ice has melted? given
asked by Chemistry 
Jake
A combustion bomb containing 5.417 g of aluminum metal and 15.974 g of iron III oxide is placed in an ice calorimeter that initially contained 7.746 kg of ice (at o degrees C) and 7.894 kg of liquid water (at o degrees C). The reaction, once ignited by
asked by Chemistry 
Physics
A 15 N force is needed to move an object with constant velocity of 5 m/s. What power must be delivered to the object by the force? I konw that P=W/t and W=Fd But other than that I am confused . I am not sure how i would solve this problem.
asked by Andrea 
PHYSICS
Jason is practicing his tennis stroke by hitting balls against a wall. The ball leaves his racquet at a height of 57 cm above the ground at an angle of 80° with respect to the vertical. (a) The speed of the ball as it leaves the racquet is 17 m/s and it
asked by STEPH 
Physics
I am given a velocity versus time graph for a runner. For it, I had to figure out the average velocity for the entire 16 s interval (for this, I got 2 m/s). Now they want me to find the displacement of the runner in the first 15.4 s. I know that it must be
asked by Lindsay 
ap physics
can you check my answers? 2.is more work required to bring a fully loaded truck up to a given speed, than the same truck lightly loaded? defend your answer? more work is required to bring a fully loaded truck up to a given speed because it is doing more
asked by Elisabeth 
social studies
By 1914, what two nations controlled most of africa?
asked by erin 
math
A tangent line is drawn to the hyerbola xy=c at a point P. 1) show that the midpoint of the line segment cut from the tangent line by the coordinate axes is P. 2) show that the triangle formed by the tangent line and the coordinate axes always has the same
asked by justin 
chem
Mass of tablet: 1.4930g Volume of HCL added: 100ml Find the milimoles of HCL added I have many questions similar to this, could someone explain how to do this...do I just find the # of moles regularly and multiply by 1000? any help would be much
asked by Alexa 
Physics
A player kicks a football from ground level with a velocity of magnitude 31.0 m/s at an angle of 30.0 degrees above the horizontal. What is its maximum height?
asked by Elizabeth 
science
Hi. I live in Wisconsin and I have to describe how productivity (amount of biomass produced), diversity (variety of species), complexity (number of species in trophic levels and number of trophic levels), and resilience (remaining stable) affects my
asked by Fred 
math
how do i solve this using trig identities? 2 csc^2x = 3 cot^2x1
asked by Kayla 
physics problemcheck
do i have the following answer right? a tv set is pushed a distance of 2m with a force of 20 N that is in the same direction as the set moves. how much work is done on the set? would it be (2 m)(20 N)= 40 J
asked by Soly 
chem
Malonic acid and succinic acid each have two different pKa values. Malonic Acid pKas: 2.85 and 5.70. Succinic acid pKas: 4.20 and 5.60. Explain clearly why the first pKa of malonic acid is lower than the first pKa of succinic acid, and why the second pKa
asked by Rossel 
Social studies
please answer my question!!!!!!!!!!!!!!!!!!!!!!!!!!!!
asked by Allie 
phy.
check my understanding please. Larry weighs 300 N at the surface of the earth. what is the weight of the earth in the gravitational field of Larry? would it still be 300 N an astronaugt lands on a planet that has twice the mass as earth and twice the
asked by Julie 
MATH!!
Find equations of both lines through the point (2, 3) that are tengetn to the parabola y=x^2+x i got the derivative as y prime = 2x +1, and i don't know where to go from there. PLEASE HELP this is due tomorrow!!!
asked by Justin 
Social Studies
Why did Europeans first become interested in Africa? Why Africa, of all places? I'm getting nowhere with this question.
asked by Eve 
taylor approximations why r they useful
why are taylor approximations important? explain why such approximations might be useful? taylor approxmations are important to reduce a function. it is useful to reduce the function into a less complicated form in order to find the approximation. is there
asked by apoorva 
English
How was Edmond loved in the Count of Monte Cristo?
asked by Connor 
maths
Find the equation of each line a) with an x intercept the same as 2x5y=10 and parallel to x=4 b) with an xintercept of 4 and a yintercept of 6 please help me, I have no idea how to do these
asked by Audrey 
physics homework
I went back through my book again to find the answers can you check them? 10. when rewinding a an audio tape or vdieotape, one reel winds fastest at the end. which reel is this? why does it speed up? (this one I understand. I think that it has something to
asked by dawn 
Probs & Stats
a jury of people is chosen from 10 men and 12 women. How many ways can a jury of 6 men and women be chosen?
asked by Jenn 
physics
please check my answers. 20. does the international space station have gravitational pe? ke? explain? It has gravitation pe. I thought that Gravitational potential energy is the energy stored in an object as the result of its vertical position or height?
asked by jess 
math repost!!
please help, i procrastinated and now this is due tomorrow!! A tangent line is drawn to the hyerbola xy=c at a point P. 1) show that the midpoint of the line segment cut from the tangent line by the coordinate axes is P. 2) show that the triangle formed by
asked by justin 
science
a placebo in an experiment is also know as this
asked by carlo 
Earth Science
A seismograph station is located 2000 km from an earthquakes epicenter. Explain the order that the S and P waves will arrive at the station.
asked by Camron 
Physics
FM radio stations use radio waves with frequencies from 88.0 to 108 MHz to broadcast their signals. Assuming that the inductance has a value of 4.60 x 10^7 H, determine the range of capacitance values that are needed so the antenna can pick up all the
asked by Mary 
Circles
Imagine a stone henge from 3500 years ago. The outer circle consists of 30 stones, each standing 4m tall, 2m wide, and 1m thick. If the circle containing this regular polygon was 33m in diameter, approximately how far apart are the outer stones??
asked by Robynn 
World History
Can U please give me the direction to finding this answer. How did both Ganhi's nationlist movement in India & Kemal's in Turkey differ in terms of their methods of protest and their attitudes toward the West? What actions did each call for the people to
asked by cowgirl 
World Histor
Describe the similarities among the totalitarian dictatorship of Stalin, Mussoline, and Hilter. Include some discussion on how each rose to power and what political party each leader was affliated with.
asked by cowgirl 
math
if y=6 3xy=10 what is x
asked by Elizabeth 
Ap Calc AB
Determine (dy/dx) using implicit differentiation. cos(X^2Y^2) = x I'm really confused what to do now..i think the next steps are: d/dx [cos(X^2*Y^2)] = d/dx [x] = sin(X^2*Y^2)* ((X^2*2Y dy/dx) + (Y^2*2X)) = 1 = 2YX^2 sin(X^2*Y^2) dy/dx +
asked by Student 
Physics
At the entrance channel of a harbor, the tidal current has a velocity of 4.94 km/hr in a direction 23.2° south of east. Suppose a ship caught in this current has a speed of 15.6 km/hr relative to the water. If the helmsman keeps the bow of the ship aimed
asked by Lindsay 
Ap Calc AB
Find the equation of the line tangent to the curve at (5, 3) (x2)^2 + (y+3)^2 = 9 I solved the derivative to be dy/dx = ((2x+4)/ (2y+6)) when i plugged in the points (5, 3) I got the slope as 6/0...How is this possible?? How can i find the equation of
asked by Student 
Social studies
what are the two types of tropical climate regions?
asked by jessica 
math
how would i multiply 365/365 x 364/365 x 363/365...all the way to 326/365 using excel or the ti83 calculator without having to input all those numbers. please help. thanks.
asked by sophia 
algebra
I know the answer is 4 but I don't know how to get to it. I guess I need step by step help on how to solve this. I've run out of ideas. 3[53(y4)]=2y+7 ...sigh
asked by bridgette 
School
What are some secret random acts of Kindness??? Like something where you do something nice for someone, but they don't know who it is...
asked by Anonymous 
Math Repost for Al
math  al, Tuesday, October 16, 2007 at 7:03pm ugh can u answer this for me...................... a car gets 20 mi/gal. how many gallons would a car need to travel 70 ,i?
asked by Ms. Sue 
Physics
A wooden block is moving on a rough level surface. It originally has 25J of kinetic energy. If the friction force acting on it is a constant 1N how far will it slide before comming to a stop? KE=F_f 1/2mv^2=F_n (meu) but the problem i run into is that meu
asked by Andrea 
social studies
i hope it's ok if i post another question: How did the western nations respond to South Africa's apartheid system?
asked by erin 
Math
An impact printer prints 1 page using regular type and 3 pages using bold type in 23 seconds. If the printer prints 2 pages using regular type and 4 pages using bold type in 34 seconds, how long does it take to print 1 page for each typeface?
asked by Daley 
Physics repost please clarify
The distance between earth and the moon can be determined from the time it takes for a laser beam to travel from earth to a reflector on the moon and back. If the roundtrip time can be measured to an accuracy of 0.19 of a nanosecond (1 ns = 109 s), what
asked by Mary 
Math
Carol is going to buy a new car which will cost her $1,500.00 and borrowing the remainder. If she makes monthly payments of $343.00 for three years, what APR has she paid?
asked by Mytisha 
Social Studies
Do you have information on the history of apple pan dowdy and its use in colonial America
asked by Susan 
Algebra II
I'm not quite sure how to set this problem up. This is the first of the entire worksheet and I'm sure if I understand one problem I can finish the rest pretty easily. The problem states: When there is no wind, Amelia flies her plane from Oklahoma City to
asked by Tammy 
spanish
it says use the following formula es/son (plus) de (plus) material or pattern model  estas botas/cuero = estas botas son de cuero este traje/lana i am not sure what to do
asked by claire 
health
the life expectancy increased from 74% in 1970 to 78%in 1990 what contributed to this factor
asked by marie 
Physics
Suppose that a police car on the highway is moving to the right at 20 m/s, while a speeder is coming up from almost directly behind at a speed of 31 m/s, both speeds being with respect to the ground. The police officer aims a radar gun at the speeder.
asked by Mary 
science!
Hi. I live in Wisconsin and I have to describe how productivity (amount of biomass produced), diversity (variety of species), complexity (number of species in trophic levels and number of trophic levels), and resilience (remaining stable) affects my
asked by Fred 
Algebra
How do i graph y=.50x445?
asked by Jerald 
science
Can you check to see if I understand these questions? 1.when a jumbo jet lands, there is a decrease in both its kinetic and potential energy. where does this engergy go? The engergy goes under the wings 5. a baseball and a golf ball have the same
asked by Lou 
algebra
2t+1=3 it one of the following, but which one? A) 1 B) 1 C) 2 D) 2 please help Me!!!!!
asked by cassidy 
Social Studies
The Adironadack Mountains, the Hudson and Mohawk Valleys, and the Atlantic Coastal Plain are all examples of ?
asked by Becky 
algebra
i think the answer is 1 is that correct?
asked by cassidy 
chemistry
what happens when a hot empty coke can is put in a icy cold water ? what is the reaction?
asked by alice 
Social Studies
Why were the Europeans able to conquer large areas of Africa?
asked by Eve 
physics
why are lightweight tires preferred over lightweight frams in bicycle racing?
asked by Linds 
Social Studies
Why do many African nations have trouble uniting their people?
asked by Eve 
Social Studies
What created the demand for slave labor?
asked by Eve 
Social Studies
Why is it difficult to travel on many African rivers?
asked by Alison 
Geography
Do you feel suburbia is a sustainable way of life?
asked by Mark 
Social Studies
Hi again. :] What was King Leopold's role in the final scramble for Africa?
asked by Eve 
factoring
how do you factor/get roots for 3x^2+6x+1?
asked by cadi 
Social Studies
Why is Subsaharan Africa the poorest and least industrialized region in the world today? I'm thinking something to do with corruption. And the literacy rate, maybe?
asked by Eve 
Soc. Std
Can u please tell me any website that will help me find good information on the Boston Tea Party. Thank you!
asked by Sonic 
Math
An impact printer prints 1 page using regular type and 3 pages using bold type in 23 seconds. If the printer prints 2 pages using regular type and 4 pages using bold type in 34 seconds, how long does it take to print 1 page for each typeface?
asked by Daley 
math
What are some facts for rate and principle?
asked by jena 
ACCOUNTING
I have to prepare an adjusting entry for Dec 31, 2008 for prepaid insurance from this: An analysis of the company's insurance policies provided these facts: Policy A Purchased on April 1, 2007 for 24 month at $11400. Policy B Purchased on April 1, 2008 for
asked by paula 
World History
The Mongols in india were foreigners who were also: A.) Confucians B.) Buddhists C.) Muslims D.) Christians
asked by JJ 
/None/
I'd just like to thank everyone for all the help I've been given. In the future, I'm sure I'll be back. :] Thanks!
asked by Eve 
government
What does the Commerce Power allow Congress to do?
asked by Teri 
English II
I need to determine a rule as to why the answer is C. A.) Jumping off of a balance beam is different from jumping off a trampoline; each jump requires a unique skill. B.) Jumping off a balance beam is different from jumping off a trampoline; each jump
asked by Confused 
physics
9. what is the relationship between the force and distance in an inverse square law? does force= the two charges?
asked by Jennifer 
physics problem
why are lightweight tires preferred over lightweight frams in bicycle racing?
asked by Linds 
physical science
imagine that you added helium gas to a partially inflated mylar ballon, and expanded as the gas was added. During this expansion process, do you think the pressure of the helium gas inside the ballon increased , decreased or remained fairly constant?
asked by ashlee 
english
could you look over this for me? we are supposed to come up with a binary to compare two articles and then create something new (i did Christianity) to place in this binary. I want to make sure my intro is specific enough; doesn't "zoom" out to western
asked by sarah 
MICROECONOMICS
Hello ive been struggling with this problem for about 2 days now could someone walk me through it? Suppose a firm faces a downward sloping demand curve given by the equation Q = 100  (1/3)P. The firm's cost function is given by the equation C = 30 +
asked by Brett 
biology
i need help!!
asked by ashely 
Special Education
In the context of educating children with special needs, Clinical teaching : a) implements educational assessment b) requires rigid instructional methods c) is conducted by specialist clinicians d) is not suitable for students with learning difficulties I
asked by Geo 
Geography
Are all places along the equator very warm? why or why not? Thanks!!!
asked by roy 
math
Which number is an element of the whole numbers, but not an element of the natural numbers?
asked by odell 
Social Studies
What is diffuse sunlight?
asked by clayo 
physics word problem
A 1000kg car moving at 10 m/s brakes to a stop in 5 s. The average braking force is? On this question I asked my teacher I am suppose to get 2000 N and I don't get how to get it.
asked by Soly 
Math (probability) repost for Christine
Math  Christine, Tuesday, October 16, 2007 at 9:13am The odds against Amy winning the tennis tournament are 5:2. Find the probability that Amy wins the tournament ?
asked by Ms. Sue 
Alegebra II
if 3ãx6 + 3ã8x3 + 3ã1 = 0, then x= (A) 1 (B) 0 (C) 1 (D) 2 (E) 3
asked by Kathleen 
english1
how has america benefited from other countries and cultures
asked by Anonymous 
spanish
el vestido de rayas de algodon are there two de ( i am not sure if the second one is correct)
asked by claire 
Science
How Does Heat Energy Travel?
asked by Louise 
geology
In this problem, we will use amounts of the isotopes that are proportional to the actual amounts. Trust me, this is mathematically sound. suppose you have a samle of potassium feldspar from a rhyolite and you measure the ratio of atoms of 40 AR to 40K of
asked by jon 
Psychology
Franz has recently had a minor accident that resulted in temporary brain impairment. Franz parks his car and as he walks away, Franz can no longer identify the car the further away from it he gets. He says the car is not his because it is too tiny to be
asked by Alanna 
Maths
what is 7twelths+3eights?! Sorry bout my spellin and that, bit scruffy, but plz cud sum1 help me, thanks so much, byexxx
asked by Emily 
Circles!!Ugh...
Say you have a circle with a line going straight through the middle and another line crossing it close to the minor arc are both these lines guaranteed to be perpendicular??
asked by Robynn 
Managerial Economics
This is some HW for a Managerial Econ class. I've got what I think are the answers, and I'd just like someone to read over my reasoning & check my answers. Any assistance is appreciated. Thanks! 2.) A recent study of the Madison, Wisconsin market by
asked by klynn 
World History
can u please direct me in the right area for this ? Describe the similarities among the totalitarian dictatorship of Stalin, Mussoline, and Hilter. Include some discussion on how each rose to power and what political party each leader was affiliated with.
asked by cowgirl 
s.s
In social studies we are doing the thirteen colonies I need to know more about the first newspapers I need websites with some pictures please help.
asked by amy 
Math
Evaluate 3 1/4x for value of x. question: x=3
asked by Julie 
physics
How does one Coulomb of charge compare to the charge on an electron? How do you think such a large difference arose historically? i got that the have the same mass and charge. i didn't understand the second part
asked by Will 
Honors Algebra II
Solve this equation. [2x 3 3z]=[5 3y 9]
asked by Anna 
math
how do you change adecimel into fraction
asked by jalicah d. 
English
How to I write a proper book report?
asked by Emily 
Social Studies
What are three responsibilities of American citizens?
asked by Allie