Questions Asked on
June 9, 2012

Organic chemistry
If the aspirin crystals were not completely dried before the melting point was determined, what effect would this have on the observed melting point ?
asked by Heidi 
chemistry:)
The bond enthalpy of the Br–Cl bond is equal to DH° for the reaction BrCl(g)> Br(g) + Cl(g). Use the following data to find the bond enthalpy of the Br–Cl bond. Br2(l)>Br2(g) ÄH=30.91 KJ/mol Br2(g)>2Br2(g) ÄH=192.9 KJ/mol Cl2(g)>2Cl(g)
asked by April 
Chemistry
One of the substances that give wet goats and dirty gym socks their characteristic odors is hexanoic acid, CH3CH2CH2CH2CH2CO2H, which is a monoprotic weak acid. (a) Write the formula for the conjugate base of this acid.
asked by Jamie 
Geometry
The math club of Ritzy High designed a pennant for the school yacht. The pennant was in the shape of an isosceles triangle. Two points, P and Q, are located so that AC= PQ= QB. Find the measure of angle B.
asked by Emily 
finance300
3) Your uncle has $280,000 invested at 7.5%, and he now wants to retire. He wants to withdraw $35,000 at the end of each year, starting at the end of this year. He also wants to have $25,000 left to give you when he ceases to withdraw funds from the
asked by Anonymous 
Physics
A dancer completes 3.4 revolutions in a pirouette. What is her angular displacement? Help me get this answer please.
asked by Chris 
Physics
A 6.25 kg solid ball with a radius of 0.185 m rolls without slipping at 3.55 m/s. What is its total kinetic energy?
asked by Kayla 
Geometry
The captain of a ship at point A and sailing toward point B observes a lighthouse at L and finds angle LAC to be 36*30'. After sailing 5 km to B, he observes angle LBC to be 73*. How many kilometers is position B from the lighthouse?
asked by Denise 
Phsyics(Please respond)
A uniform horizontal beam is attached to a vertical wall by a frictionless hinge and supported from below at an angle è = 38o by a brace that is attached to a pin. The beam has a weight of 347 N. Three additional forces keep the beam in equilibrium. The
asked by Hannah 
PHYSICS!
A horizontal force of 10 N is applied to the outer edge of a door at an angle of 32° to the door, as shown in a view from the top looking down. The width of the door is 0.80 m. The magnitude of the torque of this force on the door with respect to the
asked by Spencer 
English
1. What does Quindlen call feeding babies, walking dogs, and doing household jobs? A. difficult chores B. simple daily routines C. wellpaid occupations D. enjoyable pastimes 2.What group of people does Quindlen decide are “correct” in their views? A.
asked by Crystal 
Physics 1
Three charges are fixed to an xy coordinate system. A charge of +16C is on the y axis at y = +3.1 m. A charge of 16C is at the origin. Lastly, a charge of +55C is on the x axis at x = +3.1 m. Determine (a) the magnitude and (b) direction of the net
asked by Beth 
PHYSICS
A child pushes a merrygoround with a force of 55.0 N at an angle tangent to the circle (that is, perpendicular to a radius). If the child pushes it through exactly one full circle, and the merrygoround has a radius of 1.15 m, how much work does she do?
asked by Meg 
art
i need to compare the facial expressions of the sculptures the seated lohan and the water and moon guanyin bodhisattva
asked by Tee 
rate of change
For a person at rest, the function p(t) = 20 cos(300˚t) + 100 models blood pressure, in millimeters of mercury ( mm Hg), at time t seconds. What is the rate of change in blood pressure at 3 s?
asked by sara 
PHYSICS!!!
A climber with a mass of 75 kg is attached to a 6.5 m rope with a cross sectional area of 3.5×10−4 m2. When the climber hangs from the rope, it stretches 3.4×10−3 m. What is the Young's modulus of the rope? Please help me :)
asked by Kaelyn 
English III
1. In Dust Tracks on a Road, what kind of literature did the young Hurston like best that made her think of heroic deeds? A. stories that were sad B. stories of math geniuses C. stories that were great myths D. stories about young women 2.What is the main
asked by Crystal 
Physical Geography
Would someone please help me with this? Or at least tell me the formula I should be using? I've been trying to get help with this for four days now. I'm VERY frustrated. Assume that a parcel of air is forced to rise up and over a 6000foothigh mountain.
asked by Sandra 
Physics
Bob and Ray push on a door from opposite sides. They both push perpendicular to the door. Bob pushes 0.63 m from the door hinge with a force of 89 N. Ray pushes 0.57 m from the door hinge with a force of 98 N, in a manner that tends to turn the door in a
asked by Kate 
Physics
The mass of the sign shown is 28.5 kg. Find the weight supported by (a) the left support and (b) the right support. Between the left and right support is 0.900m and from the right support to the end of the sign is 0.300m.   
asked by Kallie 
physics help please
A dancer completes 3.4 revolutions in a pirouette. What is her angular displacement?
asked by chris 
Chemistry
Iodine pentafluoride is an incendiary agent, a substance that ignites combustible materials. This compound is usually made by passing fluorine gas over solid iodine, but it also forms when iodine monofluoride changes into the element iodine and iodine
asked by Jamie 
math
how many times greater is the first 7 than second in 876574?
asked by don 
physics
The water skier there has a mass of 71.0 kg. Find the magnitude of the net force acting on the skier when (a) she is accelerated from rest to a speed of 14.0 m/s in 9.00 s and (b) she lets go of the tow rope and glides to a halt in 16.0 s.
asked by Anonymous 
chemistry
If 3.20 kg of Sulphur reacts with oxygen, calculate the volume in millileters of sulphur dioxide gas formed at 30.5 degrees Celsius and 1.04 atm.
asked by Madison 
Physics please help
Geosynchronous satellites orbit the Earth at an altitude of about 3.58×10^7 m. Given that the Earth's radius is 6.38×10^6 m and its mass is 5.97×10^24 kg, what is the magnitude of the gravitational acceleration at the altitude of one of these
asked by Kevin 
art
I have to choose a sculpture from the greece / rome era, and write down who the artist or which prehistoric culture its from. Since most of the sculptures don't have an artist, Can i write the sculpture is from the classical period? Does that count as a
asked by Tee 
statistics
The annual precipitation amounts in a certain mountain range are normally distributed with a mean of 88 inches, and a standard deviation of 10 inches. What is the likelihood that the mean annual precipitation during 25 randomly picked years will be less
asked by Jameson 
Physics
A box of mass m = 0.20 kg slides across frictionless tabletop from rest, with 2.5 m/s2 acceleration. The length of the tabletop is L = 2.00 m and its height is H = 1.50 m. The box then slides off the edge and hits the floor at some distance away, Find the
asked by master 
chemistry
Mercury(Hg) has a density of 13.5 g/cm cubed. How much space would 50.0 g of mercury occupy?
asked by John 
Physics
A dancer completes 3.4 revolutions in a pirouette. What is her angular displacement? In rad.
asked by Chris 
Chemistry
What is the molarity of a solution made by dissolving 32.654 g of aluminum sulfate, Al2(SO4)3, in water and diluting with water to 125.0 mL total?
asked by Jamie 
Grammar
What is the prefix, root and suffix of the word "subscribe"? My Answer: prefix  sub root  scrib suffix  e Can the suffix be a single letter? What about the word "misused"? Please help!? Am I right?
asked by Maria 
math
there are 3 shirts,2 caps,4 pairs of shorts.how many different outfits can wear ?(consisiting of one shirt,one pair of shorts and one cap
asked by don 
Art
I changed a few things from my previous mail. Could you check grammar and punctuation, Writeacher? Thank you! 1) I suppose you received the remaining balance because my bank has already taken the money from my bank account. 2) However, I would be grateful
asked by Mike 
Physics
A uniform solid cylinder of mass M = 6 kg is rolling without slipping along a horizontal surface. The velocity of its center of mass is 27.6 m/s. Calculate its energy
asked by Cyrus 
math
The diameter of an electric cable is normally distributed, with a mean of 0.8 inch and a standard deviation of 0.01 inch. What is the probability that the diameter will exceed 0.81 inch? (Give the answer to four decimal places.)
asked by Anonymous 
Mathematicsplease help!
A piece of wire 168cm. long is to be cut into two pieces, each to be bent to make a square. The lenght of a side of one square is to be 2cm. greater than the lenght of aside of the other. What is the area of the smaller square? Ans= 80
asked by Jeconiah 
Physics
A green sedan weighing 25,000 Newtons is put on a lift supported by a piston with a cross sectional area of 0.1 square meters. What is the minimum force that must be exerted by the air compressor that pushes down on the oil in the reservoir of the lift
asked by LL 
Physics
The drawing shows an edgeon view of two planar surfaces thatintersect and are mutually perpendicular. Surface 1 has an area of 1.7 m^2, while surface 2 san area of 3.2 m^2. The electric field in the drawing is uniform andhas a magnitude of 250 N/C. Find
asked by Beth 
Physics
A green sedan weighing 25,000 Newtons is put on a lift supported by a piston with a cross sectional area of 0.1 square meters. What is the minimum force that must be exerted by the air compressor that pushes down on the oil in the reservoir of the lift
asked by LL 
Physics
A green sedan weighing 25,000 Newtons is put on a lift supported by a piston with a cross sectional area of 0.1 square meters. What is the minimum force that must be exerted by the air compressor that pushes down on the oil in the reservoir of the lift
asked by LL 
physics
A green sedan weighing 25,000 Newtons is put on a lift supported by a piston with a cross sectional area of 0.1 square meters. What is the minimum force that must be exerted by the air compressor that pushes down on the oil in the reservoir of the lift
asked by LL 
Physics.
A car starts a race from rest on a circular track and has a tangential speed of 43 m/s at the end of the third lap. The track has a radius of 91 m. If it has constant angular acceleration, what is the magnitude of its tangential acceleration? Help me and
asked by Mellanie 
physics
A 84.5kg person stands on a scale in an elevator. What is the apparent weight when the elevator is (a) accelerating upward with an acceleration of 1.93 m/s 2, (b) moving upward at a constant speed, and (c) accelerating downward with an acceleration of
asked by Anonymous 
math
a person spins the pointer and is awarded the amount indicated by pointer.It cost $5. to play . There are three sections $2.00 1/2, $5.00 1/4. and $10.00 1/4 what is the expectation of a person who pays. what is the fair price to play game
asked by canduy 
business
A researcher was given the assignment of predicting which of three actions would be taken by the 280 employees in the Desota plant that was going to be sold to its employees. The alternatives were to: a. Take severance pay and leave the company. b. Stay
asked by andrea 
chemistry
Mercury(Hg) has a density of 13.5 g/cm cubed. How much space would 50.0 g of mercury occupy? Calculate the mass in grams, of a 3 cubic inch cube of aluminum(Al). The density of aluminum(Al) is 2.5 g/cm cubed. NOTE:(1inch cubed =16.4 cm cubed
asked by John 
microeconomics
Individuals in a market who must take the market price as given are?
asked by Pat 
Introduction to Business
Things have really been happening at Sun2Shade, a company that manufactures selfdarkening windshields. Many changes have been made and it would seem like things ought to be going smoothly. However, there are problems with the workers, and you just can't
asked by Demetric 
Accounting
Kathryn, an individual, own all of the outstanding stock in Copper Corporation. Kathryn purchased her stock in Copper 11 years ago, and her basis is $18,000. At the beginning of this year, the corporation has $38,000 of accumulated E &P and no current E&P
asked by Tina 
finance
You want to save $1,000,000 for your retirement (under 40 years old) or $100,000 (over 40 years old). If you use common stocks with an average rate of return of 10% how much do you need to save monthly?
asked by lisa 
U.S. GOVERNMENT
Which of the following documents was the first famous document to "open the door" of democracy in England? A) The Petition of Rights B)The Mayflower Compact C)The Magna Carta D) The Bill of Rights
asked by Booker Perry 
c0llege math
multiply and simplify 3(3)(3)negative exponent x 3 6 exponets would the correct answer be 1/81
asked by Lourane 
Physics(Please check)
A spring stretches by 0.0226 m when a 4.39kg object is suspended from its end. How much mass should be attached to this spring so that its frequency of vibration is f = 7.35 Hz? 7.35 = 0.0226(4.39x) Did I set this up correctly?
asked by Hannah 
English
1. In an hour, we arrived at the base. 2. After an hour, we arrived at the base. 3. In an hour, we will arrive at the base. 4. After an hour, we will arrive at the base. (Which preposition do we have to use? Which ones are correct?)
asked by rfvv 
math
twin primes have one composite number between them(e.g.5,7).write one pair of twin primes between number 20 and 40
asked by don 
Mathematicsplease help!
Solve for x: 9/28 + 3/x+2 = 3/4.
asked by Jeconiah 
CJS230
Can someone please assit me with finding a website to answer the folloing questions? Based on the ideals of a penitentiary, what should it be like? What was the principal goal of a penitentiary? What were the differences between the two prison models? What
asked by Picaboo 
college math
combine the terms (simplify) 12x + 4  11y  6x 9y
asked by Lourane 
economics
Price Quantity $50 300 40 600 20 800 10 1,000 According to the above demand schedule, if price falls from $20 to $10, then
asked by Ashaki 
English
e.g. It is easy to draw cartoons. In this sentence 'It' is a formal subject and 'to....' is a real subject. (Is the expression correct?)
asked by rfvv 
calculus
Use the Newton method to approximate the indicated zero of the function. Continue with the iteration until two successive approximations differ by less than 0,0001 the zero of: f(x)=x^3+2x^2+x7 between x=1 and x=2, x0=1
asked by soffy 
Mathematicsplease help!
If cos x >0 ans sin x= 4/5, then tan x=?
asked by Jeconiah 
Finance
An annuity is developed and used based on the concept of time value of money. Please solve for the principle required when one retires so that a payment of $1500.00 is received each month for 30 years (360 months). Assume that the interest rate for the
asked by John 
Finance
Often in personal finance we want to know what our $1 investment today will be worth in 20 years. In business however, there is more concern with answering the question, “If I receive $100 in 5 years, what is that worth today?” To answer this question,
asked by John 
physics
A cannonball of mass 6.09 kg is shot from a cannon at an angle of 47.18° relative to the horizontal and with an initial speed of 48.90 m/s. As the cannonball reaches the highest point of its trajectory, what is the gain in its potential energy relative to
asked by lanre 
Physics(Please help)
Some bacteria are propelled by motors that spin hairlike flagella. A typical bacterial motor turning at a constant angular velocity has a radius of 1.9x108m, and a tangential speed at the rim of 2.7x105 m/s. (a) What is the angular speed (the magnitude
asked by Hannah 
college math
combine like terms (simplify) 12x + 4  11y  6x  9 y is this clearer Sue
asked by Lourane 
college math
original question 11/14a  1/15b + 1/14a  11/15b is this answer correct 12/14a + 12/15b
asked by Lourane 
math
Determine if each function is even, odd or neither. Show all work and include an explanation of any symmetry that exists. A) y = x^4 + 4x^2 B) y = 3x^3  x  3 C) y = x^5  x^3 + x D)y = 3
asked by liban 
CHEM:
caluclate the volume in mL of 1.74 grams of sodium chloride from a 0.270 M solution 1.74g sodium chloride from a 0.270 M solution 7.10g ethonal from a 2.45 M solution 6.90g acetic acid (CH3COOH) from 0.606 M solution
asked by April 
US government
Which of the following was ratified with the assistance of adding a Bill of Rights to assure citizens that their individual rights would not be imposed upon by the new government? A)The Magna Carta B)The Articles of Confederation C)The Declaration of
asked by alex 
art
is the prehistoric culture of the statue of eros sleeping the hellenistic period
asked by Tee 
college math
if 5 times a number is increased by 5, the result is 30. Find the number. would the correct answer be 5
asked by Lourane 
history
what was the role of violence in the Mexican Revolution ?
asked by johnny 
math
howmany degrees does a person turn who was facing north and now faces south?
asked by don 
Mathematicsplease help!
The first term of the sequence is 168 and every term after the first is 8 more than term immediately proceeding it. Find the 88th term.
asked by Jeconiah 
Physics!
A 20 kg square slab with side lengths 3.0 m rotates around an axis perpendicular to the slab. A particle of mass 0.60 kg sits on each of the corners of the square. Also, a particle of mass 0.80 kg sits at the center of each of the edges. What is the moment
asked by Lilly 
leadership
Lars Larsen was your first boss at the medical center. You had problems from the outset, because of a clash of personalities. Then things got worse, and you filed a sexualharassment complaint. The complaint was not sustained because of lack of specific
asked by Anonymous 
Physics
A building with a weight of 5.200e+7 N is built on a concrete foundation with an area of 1300 m2 and an (uncompressed) height of 2.82 m. By what vertical distance does the foundation compress?
asked by Kate 
maths
a cyclist and jogger are 20 miles apart. the cyclist rides at 17 mph and the jogger runs at 7 mph. they move towards each other. a fly starts on the nose of the cyclist and flies at 20 mph from the cyclist to the runner and back. it continues back and
asked by Sara 
phy
A constant force does 12.0 Joules of work pushing a 350 gram block a distance of 2.5 meters up a ramp. The block starts from rest and reaches a speed of 4.75 m/s after being pushed for 2.5 m. The block’s potential energy increases by 5.0 J as it travels
asked by ihsan 
Logorithms
Solve: 3^5x = 27^(x1)
asked by Labz 
college math
ny answer is 6x  12y  5 12x 4  11y 6x  9 4
asked by Lourane 
college math
combine like terms (simplify) 11/14a  1/15b + 1/14a  11/15b would the correct answer be 12/14a + 10/15b
asked by Lourane 
econimics
Suppose that two people, Michelle and James each live alone in an isolated region. They each have the same resources available, and they grow potatoes and raise chickens. If Michelle devotes all her resources to growing potatoes, she can raise 200 pounds
asked by rob 
college math
would this answer be correct with fraction reduced 6/7a  4/3b is this finally correct sue
asked by Lourane 
Math
Facebook reports that the average number of facebook friends worldwide is 175.5 with the stand deviation of 90.57. Take sample of 25 students, what is the probability that the mean number Facebook friends in the sample will be 190 friends or more..HELP
asked by Amy 
science
A ball hit by a player too 2.4s to reach the short stop from home plate. If the short stop threw the ball to first base at a speed of 20m/s, a distance of 30m, how long would the runner have to make it to first base and arrive at the same time as the ball.
asked by amy 
Art
Ms. Sue, Writeacher I urgently need you to check this paragraph and suggest where I should look for more specific details on this topic. 1) The information appearing on cosmetics must be present directly on the container of the cosmetic and, if present, on
asked by Mike 
Physics
%%%%%BA (inclined at 55 degree) %%%%/%%/\ %%%/%%/%%\Pull 3900N %%/%%/ %DC %%%/ %%/% %/%% %!@#$%^&E %%%/ %%/% %/%% %HG (All is Pin Joint) Distance DC = FE = HG = AB = 2.7m FH = FD = GE = EC = CB = 2 m Find the supporting reaction of
asked by ToT_Alex 
geology
How is a debris flow different from a rock slide
asked by Carlos 
Mathematicsplease help!
The vertices of a triangle are (2,3),(2,1) and (2,7). What is the area of this triangle?
asked by Jeconiah 
Mathematicsplease help!
The first term of the sequence is 168 and every term after the first is 8 more than term immediately proceeding it. Find the 88th term.
asked by Jeconiah 
Algebra 1PLEASE HELP
Solve for k k/k4 + k/k1=1
asked by hockeyfreak2011 
Algebra 1
What is the difference of: x^21 1    x^2+8x+7 x+7
asked by hockeyfreak2011 
Math
evaluate: log base 1/4 (1/16)^4
asked by Labz 
math
what does it mean to describe the context in which a equation is used. describe the meaning of a equation and the meaning of the variables.what is meant by solution of a equation. my equation is y=2x+3
asked by pat 
calculus
can you please explain tep by step how to solve dividing complex numbers strictly using a graph, the complex plane. I know how to do it algebraically, but not graphically. thankyou
asked by wendell 
Math
A square is made up of section A and section B. Section A is 500 sq. ft. and section B is 750 sq. ft. What percent of the square is section A?
asked by Greg 
CJS210
Can someone please help me find a website to answer these following question? Describe various types of police agencies at the local, state, and federal level and how each is organized. Identify the principal roles and functions of police organizations and
asked by Sade C 
algebra
sqrt(10a) + 5 sq. rt. (250a^2) add and sinplify
asked by Randy 
college math
multiply 7(2a4) would the correct answer be 14a28
asked by Lourane 
math
1/5 of 35 +16 equal?
asked by don 
math
label its dimensions after you rule a square the same area as this rectangle on the back of this sheet 16mm ,4mm
asked by don 
calculus
find the derivative of the function f(x) = e^(3x) sec (7x)
asked by soffy 
Mathematicsplease help!
If cos x >0 ans sin x= 4/5, then tan x=?
asked by Jeconiah 
c0llege math
factor bxby+bz would the correct answer be b(xy+z)
asked by Lourane 
Geography
The occurrence of floods in urban areas is particularly dangerous because _____.
asked by Me. 
ScienceNerve Cells
Descibe how an electrical impulse travels through a nerve and between nerves.
asked by hockeyfreak2011 
art
is peaceful considered a mood? I need to write the mood of the sculpture, statue of Eros sleeping.
asked by Tee 
college statistics
consider a population with a mena =51.6 and a sd=5.9 (A) calculate the z score for x= 50.5 from a sample of size 47. (b) could this z score be used in calculating probabilities using table 3 in appendix b in text book ahy or ahy not
asked by melba 
college math
Evaluate the expression 3x small 2 and y= 5 would the correct answer be 45
asked by Lourane 
Algebra
h(x)=4x4
asked by Diane 
math
State the domain and range for following: A) y=4x B) y=12 C) y=x^24x+1 D) y=x^2+2x+1 E) y=3x^3x^21 F) y=3x^3+x^21
asked by liban 
Chemistry
When you use UV Vis to determine the purity of the product how does knowing the amount of salicylic acid help? Do you only use this when you know (after adding Fe3+) that the aspirin isn't pure? I know there is a very simple answer to this question...
asked by mish 
math
find the quotient x^264/x+8
asked by jenn 
Mathematicsplease help!
Solve for x: 9/28 + 3/x+2 = 3/4.
asked by Jeconiah 
Math
Evaluate: log base 2 of 32^3 show all steps.
asked by Labz 
c0llege math
factor bxby+bz would the correct answer be b(xy+z)
asked by Lourane 
algebra
3(a+2)=4a I multiply 3*a+3*2=4a so 3a+6=4a I added 3a to 4a/ =7a and answer was 1(answer is 6) i just don't understand how and why we subtract 3a from 4a instead of adding. please help me
asked by ^^^^kesha 
PSY202
One of the reasons that certain advertisements are successful is because viewers want to behave like those they observe. What is the general term that psychologists use to describe this type of behavior? (Points : 1) Operant Conditioning Social Learning
asked by Anonymous 
Physics help
If a spherical glass marble has a radius of 0.00665 m at 1.02×105 Pa, at what pressure will it have a radius of 0.00650 m? Thanks
asked by Alex 
Maths
T=30w+20
asked by Michael 
Art
Thank you, Writeacher. Here is the last part of the same summary. Could you please check it? 1) The names of the ingredients are reported using an international code, INCI which is the same for all EU countries though it is also used in other countries,
asked by Mike 
Health
i need recipes/food from meat,dairy,grain,veg,an fruit under 600 calories so all the food from each category equals to 600 cal please help
asked by plz help :) 
college math
should the correct be 12/14a  10/15b is this correct sue
asked by Lourane 
Math
out of these variables which would and would not follow normal distribution. shoe size height age GPA model year of car how many friends on face book Please explain why..thanks
asked by Ella 
c0llege math
solve 2x=11(x1)
asked by Lourane 
c0llege math
multiply 0.5(a+b5) would the correctanswer 0.5a=0.5b2.5
asked by Lourane 
springford
a motorcycle traveling at 60mph hits a stopped car how far will the driver of the motorcycle be launch in feet
asked by brian