Questions Asked on
April 8, 2010

chemistry
What is the complete ionic equation for CaS(aq) +CuCl2(aq)=CuS(s)+CaCl2(aq)
asked by lupe 
Chem
Calculate delta H for the formation of one mole of N2O5 from the elements at 25 degrees C using the following data. 2H2 + O2  2H2O delta H = 571.6 kJ N2O5 + H2O  2HNO3 deltaH = 73.7 kJ 1/2N2 + 3/2O2 + 1/2H2  HNO3 delta H = 174.1 kJ
asked by Anonymous 
CALCULUS
A ruptured oil tanker causes a circular oil slick on the surface of the ocean. When its radius is 150 meters, the radius of the slick is expanding at 0.1 m/min, and its thickness is .02 m. At that moment: a. How fast is the area of the slick expanding? b.
asked by MILEY 
chemistry
what is the pressure exerted by a 0.500 mol sample of nitrogen in a 10.0 L container at 20 degrees C?
asked by james 
college Chem
A diver exhales a bubble with a volume of 250 mL at a pressure of 2.4 atm and a temperature of 15 °C. How many gas particles are in this bubble?
asked by Russell 
PHYSICS
A ball of mass m at rest at the coordinate origin exploded into three equal pieces. At a certain instant, one piece is on the xaxis at x=40cm, and another is at x=20cm, y= 60 cm. Where is the third piece at that instant.
asked by Student 
chemistry
what volume of oxygen gas is needed to completely combust 0.202 L of butane (C4H10) gas?
asked by mary 
government
Constitutional scholars have pointed out there is an inconsistency in Justice Marshall's opinion with respect to what the constitution specifically provides. What is that inconsistency?
asked by susie 
math Please help me with part b
The average cost per item, C, in dollars, of manufacturing a quantity q of cell phones is given by C= (a/q) + b where a and b are positive constants a.Find the rate of change of C as q increases. What are its units? b. Currently, 5000 phones are being made
asked by joelle 
Chemistry
"Given that the bond enthalpy of the carbonoxygen bonds in carbon monoxide and carbon dioxide are 1073 kJ/mol and 743 kJ/mol respectively, and that of the bond in the oxygen molecule is 496 kJ/mol, calculate the enthalpy change for the combustion of 1
asked by Stuck 
Math
With time, t, in minutes, the temperature, H, in degrees Celsius, of a bottle of water put in the refrigerator at time t=o is given by H = 4 + 16e.02t How fast is the water cooling initially? After 10 minutes? Include units in your answer
asked by piper 
Chemistry
A reaction of 1 L of chlorine gas (Cl2) with 3 liters of fluorine gas (F2) yields 2 liters of a gaseous product. All gas volumes are at the same temperature and pressure. What is the formula of the gaseous product? So it would look roughly like this? Cl2 +
asked by Anonymous 
Physics
An unstable highenergy particle enters a detector and leaves a track 1.35 mm long before it decays. Its speed relative to the detector was 0.992c. What was its proper lifetime? That is, how long would the particle have lasted before decay had it been at
asked by Hercules 
Physics
Two Q = +6.72 mC charges are placed at opposite corners of a square d = 1.5 m on each side, and Q = 6.72 mC charges are placed at the remaining corners, as shown in the figure. Q___________Q         Q__________Q
asked by DJ 
chem
A metal oxide reacts with water to produce a metal hydroxide. What additional information would you need to determine the percent yield of metal hydroxide from this reaction?
asked by Marc 
CALCULUS
A gas station stands at the intersection of a northsouth road and an eastwest road. A police car is traveling towards the gas station from the east, chasing a stolen truck which is traveling north away from the gas station. The speed of the police car is
asked by MILEY 
chemistry
Excess florine, F2(g) reacts at 150 degrees celius with bromine, Br2(g) to give the compound BrF(n). If 423 mL of Br2 at 150 Degrees and 748mmHg produced $.20 g BrF(n), what is it? describe the bonding in the molecule, using valence bond theory.
asked by Emily 
Chemistry
Determine the mass of gold that can be extracted if 25.0g of sodium cyanide is used. 4Au+8NaCN+O2>4NaAu(CN)2+4NaOH
asked by Lauren:) 
Chemistry
how much heat is required to vaporize 343 g of liquid ethanol at its boiling point?
asked by Anonymous 
chemistry
How many grams of oxygen are required to react with 0.128 lead(II) sulfide?
asked by jeff 
econimics
Why might price collusion occur in oligopolistic industries? Assess the economic desirability of collusive pricing. What the main obstacles to collusion? Speculate as to why price leadership is legal in the United States, whereas price fixing is not.
asked by Erick 
Chemistry
Identify the balanced net ionic equation for the reaction 2Na3PO4(aq) + 3CaCl2(aq)¨ 6NaCl(aq) + Ca3(PO4)2(s)
asked by Dan 
economics
. If the government wanted to encourage a monopoly to produce the socially efficient quantity, should it use a perunit tax or a perunit subsidy? Explain how this tax or subsidy would achieve the socially efficient level or output. Among the various
asked by Kim 
SciencePeriodic Table
starting from carbon what occurs to the ion charge as u move it to right? In my periodic table Carbon does not have a charge at all; there is just a dash in place of where a charge should be, I'm not really sure what that means. starting from carbon, what
asked by Sara 
Technology
23. List two examples of tools used in each of these major areas of processing: material, energy, and information processing. I'm stuck! :(
asked by y912f 
chem101
will the following reaction take place nh3+h2o= nh2 + h3o
asked by wendy 
MATH
It is a wellknown fact that homing pigeons fly faster over land than over water. Assume that they fly at 10 metres per second over land, and only 8 metres per second over water. A pigeon is located at the edge of a straight river bank, 500 metres wide,
asked by EMILY 
statistics
the ages of five randomly chosen cars in a parking garage are determined to ,be and , years old. if we consider this sample of in groups of , how many groups can be formed?
asked by Anonymous 
Math
Graph the inequality on a plane. y>5x. I think that it should be a dashed line that should be a horizontal line but I'm not totally sure. Could you please help me with this graph? Thanks.
asked by B.B. 
Chemistry
The halflife for radioactive decay of 14C is 5730 years (it emits βparticles with energy of 0.16 MeV). An archaeological sample contained wood that had only 72% of the 14C found in living trees. What is its age?
asked by Zoa 
Chem
How many lone pairs of electrons are on the central atom in the water molecule
asked by Lynn 
College Mathematics
A survey of 300 parks showed the following 15 had only camping 20 had only hiking trails 35 had only picnicking 185 had camping 140 had camping and hiking trails 125 had camping and picnicking 210 had hiking trails Find the number of parks that: Did not
asked by Michele 
Chem
calculate the amount of heat involved in the conversion of 25.00 g of water at 100 *C to steam at 100 *C. ( delta H vaporization = 40.7 kJ/mol)
asked by Anonymous 
math
list the possible valures of sin a if a is a quadrental angle
asked by Anonymous 
calculus
Sketch the region enclosed by x+y^2=42 and x+y=0. Decide whether to integrate with respect to x or y, and then find the area of the region.
asked by lssa 
math/probability
find the number of possible choices when you choose one item from each category. 1. 3 hats, 7 shirts, 13 scarves 2. 6 pens, 2 nbk 3. 4 cars, 2 colors i don't get the question
asked by Jane 
Chemistry
A solution is prepared by mixing 13.00 ml of .0021 M aqueous Hg2(NO3)2 with 25 ml of .015M HCL. Assme that volumes are additive. a) Will precipitation occur? b) Calculate [HG2 2+], [CL], and [NO3] after equilibrium is established.
asked by Anmol 
science
does everything you see fit the definition of matter? can you see all kinds of matter? how can helium take up space?
asked by jeremias 
economics
How does monopolistic competition differ from pure competition in its basic characteristics? From pure monopoly? Explain fully what product differentiation may involve. Explain how the entry of firms into its industry affects the demand curve facing a
asked by Erick 
Algebra 2
16x^2+16y^216x+24y3=0 How do I solve this?
asked by Soto 
Chemistry
How many moles of NaBH4 are needed to generate one mole of B2H6 if the reaction gives an 80% yield? 3NaBH4 +4BF3 ¨ 3NaBF4 + 2B2H6
asked by Dan 
Calculus
How would I solve this: A particle moves along a line so that, at time t, its position is s(t)=8 sin2t. a) For what values of t does the particle change direction? b) What is the particle's maximum velocity?
asked by Terry 
physics help
A flywheel turns through 32 rev as it slows from an angular speed of 2.1 rad/s to a stop. How much time is required for it to complete the first 16 of the 32 revolutions?
asked by stanely 
math please help
A ruptured oil tanker causes a circular oil slick on the surface of the ocean. When its radius is 150 meters, the radius of the slick is expanding at 0.1 m/min, and its thickness is .02 m. At that moment: a. How fast is the area of the slick expanding? b.
asked by joelle 
Physics
In one model of the hydrogen atom, the electron revolves in a circular orbit around the proton with a speed of 2.9x10^6 m/s. Determine the radius of the electron's orbit.
asked by Anonymous 
Physics
In order to keep a leaking ship from sinking, it is necessary to pump 15.0 {\rm lb} of water each second from below deck up a height of 2.00 {\rm m} and over the side.What is the minimum horsepower motor that can be used to save the ship? What is the
asked by Physics 
classroom management
Write a onesentence goal for each of the seven assumptions that will support a productive and positive learning atmosphere. Your goals should focus on how you can achieve the demands of each assumption. Here are the seven assumptions. 1. Successful
asked by scooby 
economics
Why is there so much advertising in monopolistic competition and oligopoly? How does such advertising help consumers and promote efficiency? Why might it be excessive at times?
asked by Erick 
PreCal
A piece of charcoal of mass 35g is found in the ruins of an ancient city. The sample shows a carbon14 activity or R(t)=4.167 decays/sec. Convert the decay constant of ^14C from (1)(a)in terms of seconds instead of yrs. Find the number of atoms N(t)using
asked by Moe 
Chemisty
In an experiment, 23.0 g of ice at –25°C is converted into steam with a temperature of 124°C. How much heat is required for the process? The following data may be of use: vap = 2260 J/g; Hfus = 334 J/g; Cp(ice) = 2.06 J/g • °C; Cp(water) =
asked by Stephen 
econmics
Why do oligarchy exist? List five or six oligopolists whose products you own or regularly purchase. What distinguishes oilgopoly from monopolistic competition?
asked by Erick 
economics
What firm dominates the U.S. beer industry? What demand and supply factors have contributed to "fewness" in this industry?
asked by Erick 
Algebra
In 1994 the life expectancy of males in a certain country was 61.6 years. In 1999, it was 63.8 years. Let E? represent the life expectancy in year t and let t represent the number of years since 1994. 1) The linear function E(t) that fits the data is:
asked by Mary 
chemistry
What is the pH of a solution prepared by dissolving 8.40 g of aniline hydrochloride C6H5NH3Cl in 750 mL of 0.210 M aniline,C6H5NH2? i kno to use the ph = pka + log (base/acid). getting pka isnt the issue, but what do i put into the log (base/acid)?
asked by anonymous 
SciencePeriodic Table
whats the connection/relationship between the # of protons in the nucleus of an atom & and atomic # of the element? The atomic number tells you the number of protons in the nucleus of the atom. The atomic number is the number of protons in the nucleus of
asked by Sara 
Anatatomy and Physiology
The ability of a specific tissue or organ to respond to the presence of a hormone is dependent on:
asked by Joe 
Physics
Four equal charges Q=2*10^8coulumb are placed at the corners of a square of side 60cm.calculate the potential at the centre of the square.
asked by Ayodele 
Chemistry
Is Zn+2 diamagnetic or paramagnetic? I am a little confused on how to figure this out and I'm finding inconsistent answers when I tried to look this up. Thanks!
asked by Trixie 
Chemistry
Given the enthalpies of formation for the following substances, determine ƒ´Hrxn for Cl2(g) + C2H2Cl2(g) „_ C2H2Cl4(g) Substance ƒ´H (kJ/mol) Cl2 0 C2H2Cl2 4.27 C2H2Cl4 ¡V155.6
asked by Stephen 
Earth science
what is the material between 2900 kilometers and 5200 kilometers below earths surface inferred to be
asked by smiley 
Acc
The comparative statements of Dillon Company are presented below. Analysis DILLON COMPANY Balance Sheets December 31 Assets 2009 2008 Current assets Cash $ 21,000 $ 18,000 Shortterm investments 18,000 15,000 Accounts receivable (net) 86,000 74,000
asked by Anonymous 
chemistry
how do we calculate bond order of a molecule that has 3 different elements, like for example CNO
asked by phys 
math
The average cost per item, C, in dollars, of manufacturing a quantity q of cell phones is given by C= (a/q) + b where a and b are positive constants a.Find the rate of change of C as q increases. What are its units? b. Currently, 5000 phones are being made
asked by piper 
accounting
The partners in New Yorker Company decide to liquidate the firm when the balance sheet shows the following. NEW YORKER COMPANY Balance Sheet May 31, 2010 Assets Liabilities and Owners' Equity Cash $27,700 Notes payable $13,140 Accounts receivable 24,790
asked by mayasa 
math
how to find the period of y = cos(6x)from your graph. what is the period of y=cos(6x) in radians?
asked by subash 
english
for the word mustang.... which syllable is accented.... first or second
asked by maco 
chemistry
I was having trouble with this problem. initial pressure for the compounds involved in the reaction displayed were determined to be P(CO(g)) = 0.5794 atm, P(H2O(g)) = 0.5662 atm, P(CO2(g)) = 0.7950 atm, P(H2(g)) = 0.2754 atm. Calculate the value of the
asked by andy 
physics
A student proposes to measure the gravitational constant G by suspending two spherical objects from the ceiling of a tall cathedral and measuring the deflection of the cables from the vertical. Draw a freebody diagram of one of the objects. (Do this on
asked by phys 
calculus
Sketch the region in the first quadrant enclosed by the given curves. Decide whether to integrate with respect to x or y. Then find the area of the region. y=10cosx, y=10sin2x,x=0
asked by lssa 
chemistry(check my answer)
how do resonance structure related to its real structure? resonance structure is just another way to write the lewis dot with different formal charges and bond order
asked by phys 
Geography
52. Do you think that the British influence in India was positive or negative? Explain your answer. 52. Even though the British rule on India benefited it in a few ways, I believe that the British influence in India was more negative than it was positive.
asked by y912f 
chemistry
I also had a problem with this type of questionthe initial pressure of NOCl(g) is 4.329 atm, calculate the % of NOCl(g) left over after the reaction reaches equilibrium according to the balanced equation. The value of Kp at 400.0 °C is 1.99. The initial
asked by andy 
Math
Write a brief scenario that can modeled with a linear equation. AND Summarize a situation modeled by a quadratic equation. I am completly lost with these two questions. I understand the difference between these two functins but don't know how to come up
asked by Carrie 
SciencePeriodic Table
describe how to verify the # of electrons in the ion of an element. Can you please correct some of my wordings in here. I don't really get how to explain it. You look at the atomic number which is the same number of protons as electrons; but if there is a
asked by Sara 
Physics
A radio station broadcasting on a frequency of 106 MHz is received by an astronaut headed toward the station at a speed 4.0×107 m/s. To what frequency must the astronaut's radio be tuned?( use MHz for final unit answers)
asked by Archillis 
chemistry
I have a chemistry project where I need to make an object move using my knowledge of chemistry. The object os a small ball the size of a large marble. It must be moved using chemistry and NOT physics (ie slope wind etc). I am 15 and in grade 11.
asked by Didier 
Physics
A spherical steel ball has a diameter of 2.540cm at 25 degree Celsius. (a)What is its diameter when the temperature is raised to 100 degree Celsius? (b)What temperature change is required to increase its volume by 1%?
asked by Vanessa 
chemistry
At room temperature the equilibrium constant Kc for the reaction: 2NO(g)=N2(g)+O2(g) is 1.4x10^30. In the atmosphere at room temp. the concentration of nitrogen gas is 0.33 mol/L and the concentration of oxygen gas is about 25% that value. Calculate the
asked by curtis 
Chemistry
What will be the final temperature of a 22.0 g piece of iron (Cp = 25.09 J/K • mol), initially at 25°C, if it is supplied with 28.2 J from a stove?
asked by Stephen 
Chemistry
How many moles of PCl3 can form from a mixture of 5 mol of P and 6 mol of Cl2 according to the equation 2P + 3Cl2 ¨ 2PCl3
asked by Dan 
Chemistry
What colors would you expect to see in a flame for the following compounds: potassium chloride, potassium nitrate, and potassium sulfate. Explain your answer
asked by Sarah 
12th grade
The radioactive isotope of Carcon (^14C)has a half life of 5730. What is the decay constant of ^14C? If we start with a sample of 1000 carcon nuclei, how many will be left in 22920 years time?
asked by Moe 
English
What does the green light symbolize in the Great Gatsby when Gatsby vanishes in chapter 1?
asked by Kathleen 
PreCal
The radioactive isotope of Carcon (^14C)has a half life of 5730. What is the decay constant of ^14C? If we start with a sample of 1000 carcon nuclei, how many will be left in 22920 years time?
asked by Moe 
geography / 8 grade
I am looking for Japan Now. Ethnicity, languages, religion, education,male/female roles and expectations,type of gvt.,foreign aid,and financial status. I need any magazine or newspapers sources can you help me find these information please.
asked by marie 
3rd grade
how do I figure out 3/5 of 15?
asked by Darius 
Chemisty
In an experiment, 230 kJ of heat energy are released to the surroundings when steam is converted to liquid water. Calculate the number of grams of water condensed. The following data may be of use: vap = 2260 J/g; Hfus = 334 J/g; Cp(ice) = 2.06
asked by Stephen 
Chemistry
Alum is a hydrated compound containing 45.5% water. How many moles of water are contained in one mole of this hydrate. Data for alum M= 474 g∙mol1
asked by Dan 
Physics
Can a person, in principle, travel from Earth to the galactic center (which is about 2.30×104 lightyears distant) in a normal lifetime? Explain, using either timedilation or length contraction arguments. If they want to make the trip in 26 y what
asked by Leonidas 
Chemisty
How much heat energy is released to surrounding when 15.0 g of water at 35°C is converted into ice with a temperature of 45°C? vap = 2260 J/g; Hfus = 334 J/g; Cp(ice) = 2.06 J/g • °C; Cp(water) = 4.18 J/g • °C; Cp(steam) = 1.99 J/g •
asked by Stephen 
Economics
The nation experiences a major hurricane that destroys significant capital stock. Policymakers in the federal government reason that the destruction caused by the hurricane will reduce national income and that this should be counteracted through an
asked by Nicole 
Accounting
I know that you cannot answer homework questions directly, but in my accounting class we have to do a financial statement for Arcadia Hospital which is our checkpoint for Axia College of University of Phoenix. I did see previous question hoping to get more
asked by ADA 
physics
Pls help me out. Four positive and equal charges are located dt the corners of a square of side 20cm.if each charge has a magnitude 2microcoulumb,calculate the force acting on the charge at the lower left corner of the square.
asked by Ayodele 
social studies
i am asked to plan a port town like William Penn did however, I am not sure how the original layout of such a town may have looked like? Where can I see an actual early town plan(1700's)that might have been located near river?
asked by hugh 
Physics
A spherical steel ball has a diameter of 2.540cm at 25 degree Celsius. (a)What is its diameter when the temperature is raised to 100 degree Celsius? (b)What temperature change is required to increase its volume by 1%?
asked by Vanessa 
geography
The factor that is forcing many South Asians to move to cities is a. religious conflict in rural areas. b. the threat of landslides in coastal areas. c. lack of arable land due to a growing population. d. dry conditions in the IndoGangetic Plain C?
asked by Maggie 
Chemistry
Given the reaction shown below, calculate: (a) The amount of NO2, in grams, generated from reactants if 300.23 kJ of heat energy is released during the course of the reacton. (b) The heat energy released if 33.23 grams of O2 is consumed in the reaction. 2
asked by Stephen 
Business Law
What is one way the U.S. legal system impacts U.S. businesses
asked by Tennyson 
9th grade science
what is the loudness of sound called?
asked by Lisa Camp 
english
How should start my comapre & contrast essay on Mariah Carey & Whitney Houston? like can I get an example of an attention getter?
asked by tash 
Undamped, forced oscillation
Undamped, forced oscillation?!?!? I have this question and can't seem to get the right answer. Damping is negligible for a 0.130 kg object hanging from a light 6.30 N/m spring. A sinusoidal force with an amplitude of 1.70 N drives the system. At what
asked by bre 
calculus
Show that the curves (y= √2sinx) and (y=√2cosx) intersect at right angles at a certain point with 0
asked by Imad 
science
Ions are electrically charged particles that are formed when certain compounds are dissolved in water. These solutions will conduct electricity. The Swedish scientist Svante Arrhenius coined the term ion (which means wanderer) to explain why solutions of
asked by courtney 
1st grade math
find 4 ways to show 25 cents..
asked by lee 
web design
Final Project: Web Site Analysis · Analyze the Web site you selected for the Capstone Discussion question. · Use on your knowledge gained from the past 9 weeks. · Evaluate the current design of the site. · Identify recommendations for redesign. ·
asked by mary 
chemistry
can you tell me what i did wrong on this problem Rigid rods of negligible mass lying along the y axis connect three particles. The system rotates about the x axis with an angular speed of 3.30 rad/s. 4kg,y=3.00m 2kg,y=2.00m 3kg,y=4.00m a)Find the total
asked by phys 
math
Imagine a small chess board, 3 x 3. If you place a knight on the top left hand corner, how many different squares can the knight reach in less than 4 moves?
asked by Sandy 
chemistry
I keep getting the wrong answer for this one can someone help. The initial concentration for the compounds involved in the reaction displayed were determined to be [NOCl(g)] = 0.1738 mol/L, [NO(g)] = 0.1991 mol/L, [Cl2(g)] = 0.000005938 mol/L. Calculate
asked by andy 
geometry
the lengths of the sides of a triangle are y,y+1, and 7 centimeters. if the perimeter is 56 centimeters, what is the value of y?
asked by Anonymous 
geometry
the lengths of the sides of a triangle are y,y+1, and 7 centimeters. if the perimeter is 56 centimeters, what is the value of y?
asked by Anonymous 
Physics
A charge q=3*10^6coulumb is placed at the centre of a cube of edge L.Determine the electric flux through each of the cube faces.
asked by Ayodele 
ECONOMICS
As the economy expands, it requires les and less investment.
asked by Paul 
Chem 106
Calculate the grams of HNO3 in 35.0 ml of a 6.00 M HNO3 solution
asked by jessica 
Science, gr9
Hi, I have to write an opinionated article on the safety problems in space. I have to wrtie the issues that occur during a liftoff which are ignored I have been unable to find a website that tells me issues that occur but are ignored or thought that
asked by Fresh 
calculus
Find the equation of the following. The locus of all points in a plane such that the sum of the distances from points (2,1) and (10,1) is equal to 6.
asked by Jamie 
Algebra 2
The sequence a is defined recursively by: a_1 = 6, and a_(i+1) = a_i + 8 for all i >= 1. Then a_5 = Choose one answer. a. 38 b. 22 c. 30 d. 46 I chose a. Is that right?
asked by Gianna 
math
There are five math teachers at Nate Elementary. The ages of four of the teachers are 32, 26, 35, and 27. If the mean of the ages is 31, what is the mode?
asked by Anonymous 
math
austin invests 4500 with first national bank at 5 1/4% simple interest. how much interest does austin earn after one year?
asked by michele 
business
what are the importance of business math to the business education students?
asked by Zaharaddeen 
math 12
The mean and standard deviation of a set of data are two measurments that describe the data. A certain student has written 8 out of 10 unit exams, which are equally weighted. The student misses the ninth exam and receives a score of 0. However, for the
asked by Leigh 
chemistry
I was having trouble with this problem. initial pressure for the compounds involved in the reaction displayed were determined to be P(CO(g)) = 0.5794 atm, P(H2O(g)) = 0.5662 atm, P(CO2(g)) = 0.7950 atm, P(H2(g)) = 0.2754 atm. Calculate the value of the
asked by andy 
Biology Research Paper
I need to make my conclusion bigger; how can I do that? What more information can I add in it? Thanks Burning of fossil fuels is considered to be the largest contributing factor to the release of greenhouse gases in the atmosphere. There are many types of
asked by mysterychicken 
chemistry
Use the combined gas law to solve the following problem: Calculate the volume of helium gas that results when 0.550 L of the gas is heated from 22.0 degrees C at 1.00 atm to 30.0 degrees C at 1.50 atm .
asked by Anonymous 
Chemistry
How can you tell if [ MnCl6]4 or [ Mn(CN)6 ] 4 has the longer wavelength of light? and then how do you figure out how many unpaired electrons each has?
asked by Trixie 
Chemistry
Combustion analysis of 0.284 g of a compound containing C, H, and O produces 0.623 g of CO2 and 0.340 g of H2O. Mass spectral analysis shows that the compound has a molar mass around 120 g mol1. What is the compound's: Empirical Formula: Molecular
asked by Darali 
psychology
What is the name of the type of thinking that humans do naturally? What is the weakness of this type of thinking?
asked by Komal 
math
I need a sketch and label of a figure that has an area of 47 sq. cm.
asked by mariah 
math
Hi, for the question, "the sum of two numbers is equal to a third number(x+y=z). The sum of twice the first, three times the second, and twice the third is 7(2x+3y+2x=7). The third number is 3 more than the first(3+z=x), have I set the equations right? I
asked by Me 
introduction to university studies
how might knowing factors that influence behavior change help you with personal development
asked by Anonymous 
chemistry
On this problem I keep getting the wrong answer. I am subtracting the initial concentration of Cl2 by the equilibrium concentration then using the difference to subtract for the rest using the mole ratios. Then i used the keq constant equation of
asked by andy 
chemistry
Calculate the value of the equilibrium constant (Kp) for the reaction shown, if F(g) was found to be 96.80 % decomposed at 1000 K when its initial pressure was 4.638 atm. The initial pressure of the reaction products is 0 atm. 2F(g) = F2(g)
asked by andy 
Math
Design a rational function with the following characteristics: three real zeros, one of multiplicity 2; yintercept 1; vertical asymptotes x=2 and x=3; oblique asymptote y=2x+1.
asked by I Need Help 
PHYSICS Gr.11
Objects which are at rest or moving at constant velocity, may have forces acting on them. However the forces are said to be balanced. QUESTION: Which special force is zero, when the forces are balanced? thank you :)
asked by NINI 
world liturature and language
Write a threeparagraph comparison between themes in Márquez's "Old Man" and Kafka's "The Metamorphosis".
asked by shannon 
chem
if the reaction type is Synthesis then what would be the product of.. Fe subscript 2 O subscript 3 + H subscript 2 O
asked by Sienna 
physical science
What subdivisions make up the geologic time scale? What is the primary basis for differentiating the eras?
asked by gina 
English
Hi there, I am writing a english essay on 'Sophocles Oedipus the King' and I am trying to prove that Oedipus is not responsible for what happens to him. Could you help me come up with three strong arguments to support this.
asked by Sarah 
Chemistry
An alcohol will form an alkoxide ion when reacted with what?
asked by Deirdre 
SciencePeriodic Table
Where r the elements that form ions with a positive charge located? where r the elements that form ions with a negative charge located? can someone please briefly explain this whole positive and negative charge thing to me. I kind of get it, but the
asked by Sara 
Chemistry
How can you tell if [ MnCl6]4 or [ Mn(CN)6 ] 4 has the longer wavelength of light? and then how do you figure out how many unpaired electrons each has?
asked by Trixie 
English
Why does Nick the narrator refer to character differently every time he talks to them? For example, sometime he refers to Tom as "Tom" but other times, he refers to him as "Tom Buchanan"? is there a reason for this?
asked by Kathleen 
SciencePeriodic Table
describ how to verify the number of electrons in the atom of an element. You look at the atomic number which is the number of protons. The number of protons equals the number of electrons. please correct me if I'm wrong, thanks
asked by Sara 
math
12. Determine all possible digits to fill in the blanks to make each of the following true. (a) 9 „º482____
asked by Anonymous 
Physics
A particle of mass m0 is given a kinetic energy equal to onethird its restmass energy. How fast must the particle be traveling? please include units
asked by Kyle 
science
explain why the pressure of the gas particles incfreases as the volume is decreased.
asked by mic 
Math
I have a question. I need to graph the compound inequality of x5 and this is how my graph looks like: 6 4 2 0 2 4 6 Is this correct? Thanks.
asked by B.B. 
social studies
Why should a political system be unitary, federal, or confederal? If the U.S. were to have another constitutional convention, would we keep a federal system or change it? Why or why not?
asked by Anonymous 
crt 205
what questions would you ask yourself when evaluating an action on utilitarian gro
asked by Tina 
math
estimate by rounding the fractions a. 7 8/9* 5 1/13 b. 34 9/10 divided by 4 9/10 c. 14 19/39 divided by 19/39
asked by yolanda 
geometry
An Aframe house is 45 feet high and 32 feet wide. Find the measure of the angle that the roof makes with the floor. Round to the nearest degree.
asked by Roslyn 
computer
why are natural language not be suited for programming computer.
asked by Larner 05 
Physics
Under less than ideal conditions, a student pushes a 6 kg cart holding 2 boxes of books up a ramp to a platform that is 1.8 m high in 42 sec. Each box contains 12 kg of books. The ramp is inclined at an angle of 15 degrees. He pushes w/ a steady force of
asked by Ron 
College Speech.
How would you write a speech in a manuscript form. I have no idea how. Please help need to send in my rough draft saturday night
asked by Karina Lugo 
English
If there is a long written poem in only one stanza, then does that indicate, that it is only following one pattern? What else does it indicate? If a poem is written in one whole stanza than is the poet who wrote that just talking about one thing wither in
asked by Sara 
grammar
The coordinating conjunctions that can be used to combine two complete sentences with a comma are “for, and, nor, because, yet, so.
asked by Anonymous 
Physics
Can someone post numerical answers!! Under less than ideal conditions, a student pushes a 6 kg cart holding 2 boxes of books up a ramp to a platform that is 1.8 m high in 42 sec. Each box contains 12 kg of books. The ramp is inclined at an angle of 15
asked by Ron 
Mathstats
I am having so much trouble calculating Type 2 error in simple questions, can someone pleaseeeee help me by explaining what to do? Let ƒÊ denote the true average diameter for bearings of a certain type. A test of Ho: ƒÊ = 0.5 versus Ha: ƒÊ ‚ 0.5
asked by Franky 
spanish
List the command for the following verbs. Use the él/ella form for bailar, estudiar,caminar,beber,escuchar,ompartir?
asked by Ashauntae 
Chemistry
does oxyanion contain oxygen? I think it contains oxide, but I'm not sure about oxygen. Thanks in advance!
asked by Carla 
11th grade
On the issue of segregation, compare the views of Martin Luther King Jr. to those of Malcolm X.
asked by Cassie 
ENGLISH
WE'LL, WON'T... WHAT IS THE PROPER PHRASE FOR THESE WORDS? IS IT A COMPOUND WORD?
asked by MAX 
Organic Chemistry
Propose a synthesis of 2methylpentan3one from any haloalkane containing fewer than 5 carbons. You may use any additional carbon compounds if you need.
asked by trilla 
algebra
sam has a science test on thursday. on monday he studies 3/8 of the material. on tuesday he studies 1/3 of the material. how much material has he studied
asked by vern 
Physics
Under less than ideal conditions, a student pushes a 6 kg cart holding 2 boxes of books up a ramp to a platform that is 1.8 m high in 42 sec. Each box contains 12 kg of books. The ramp is inclined at an angle of 15 degrees. He pushes w/ a steady force of
asked by Ron 
CHEMISTRY
is it reasonable to expect the heat of neutralization to be the same regardless of which acid is used? or should we expect each acid and base combination to have its own heat of neutralization?
asked by Jane 
Physics
Under less than ideal conditions, a student pushes a 6 kg cart holding 2 boxes of books up a ramp to a platform that is 1.8 m high in 42 sec. Each box contains 12 kg of books. The ramp is inclined at an angle of 15 degrees. He pushes w/ a steady force of
asked by Ronald 
OChem
What's the purpose of "PREPARATION OF A SYNTHETIC PLANT HORMONE Adapted from "pChlorophenoxyacetic Acid – Preparation of a Synthetic Plant Hormone." thanks
asked by mina 
African American History
Due to the long stretch of years of oppression and torture African Americans hae gone through in this country, they want reparation similarly to other groups including the Jews, Japanese, and the Native Americans. What solutions or strategies would you or
asked by gina 
Physics
Can someone actually ANSWER the question pleas and post numerical answers. Under less than ideal conditions, a student pushes a 6 kg cart holding 2 boxes of books up a ramp to a platform that is 1.8 m high in 42 sec. Each box contains 12 kg of books. The
asked by Ron 
Science
Hi, I have to write an opinionated article on the safety problems in space. I have to wrtie the issues that occur during a liftoff which are ignored I have been unable to find a website that tells me issues that occur but are ignored or thought that
asked by Fresh 
Math
Media service charges $20 for a phone and $30/month for its economy plan. The equation c=30t +20 describes the total cost,c, of operating Media Services phone for t months. A) The total cost for 8 months of service is? My answer $260 If a customer has only
asked by Richard 
math
if a=2^3*3^7*5^3*11^4 and b=2^2*3^5*7^2*11*13,find the following.(leave your anwer written with exponents)a.GCD b.LCM
asked by yolanda 
finance 200
I really do not understand how to do this or set this up. Can you please help me? Pro Forma Statements a. Mike Epstein is very optimistic because sales for his feed store are expected to double from $800,000 to $1,600,000 next year. His net assets (Assets
asked by annonomous 
advanced algebra
Q. x^4/5=16 What is x Q. Suppose 0
asked by roy 
chemistry
How many grams of water can be made by the reaction of 1.25 grams of ethanol with 2.50 grams of oxygen?
asked by Lacy 
calculus one
Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis. y=x^4,y=1; about y=5
asked by lssa 
healthcare
need combining form for midsagittal
asked by tom 
CP Physics
Under less than ideal conditions, a student pushes a 6 kg cart holding 2 boxes of books up a ramp to a platform that is 1.8 m high in 42 sec. Each box contains 12 kg of books. The ramp is inclined at an angle of 15 degrees. He pushes w/ a steady force of
asked by Ronnie 
Technology: ms.sue, bobpursley
24. From a technological viewpoint, explain why farming has gotten less labor intensive over the last hundred years. You two helped me on this yesterday, and I combined your answers and added my own to it. Please let me know if it is okay. 24. Farming has
asked by y912f 
Physics
Under less than ideal conditions, a student pushes a 6 kg cart holding 2 boxes of books up a ramp to a platform that is 1.8 m high in 42 sec. Each box contains 12 kg of books. The ramp is inclined at an angle of 15 degrees. He pushes w/ a steady force of
asked by Ronald 
To: DrBob222
Can you please check my previous science post. As of right now, you are the only science teacher on this sitewhich is why I am pleading you to. Thank you very much:)
asked by Sara 
chem
how many mL of .100 M of acetic acid and .100 M of NaOH, would be need to make the volume 1.0 liters and have a pH7.00 if Ka=1.8x10^5 please write out the steps or eq for me im gettin stuck
asked by phil 
Pysical Science
Suppose I give you 2kg of a substance at 90 degree C with a specific heat of .75 cal/g degree C. How much ice water will it take to cool the sample to 20 degree C?
asked by Andrea 
science
why do crickets chirp louder when it is warm. I think it is because they are ectotherms but i really do not know how to explain why. Thanks.
asked by summer 
chemistry
at 2 atm of pressure the volume of a ballon is 4.7 L. Assuming that the temperature remains constant, what will the volume of the ballon be at 1 atm of pressure?.
asked by Anonymous 
math
a sale at carney's electronic offers a specific model of sony radio at 20% off the reg price. if the sale price is 45 what is the reg price? would the answer be 54?
asked by monica 
1st grade
show 25 cents in several ways
asked by gina 
chemistry(please clarify my thoughts)
for MO between CS, is the sigma bond higher in energy than pie bond since it is applied to C.So when we do MO for CS,do we use that rule in this as well
asked by phys 
Calculus
Find dy/dx in the following: y=[x/√(1x²)] sin‾¹x y'={[(1x²)^(1/2)(2x)(x)(1/2)(1x²)^(1/2)]/(1x²)}  (1/√(1x²)) Then I multiplied (2x)(x)(1/2) together. How do I simplify the rest?
asked by sh 
College Physics
The three bodies in the figure each have the same mass. If one of the bodies is moved 11.3 cm in the positive xdirection, by how much does the center of mass move?
asked by Tristen 
math
a survey was made of 200 students to study their use of the public library. the findings were 60 used readers guide 28 used card cat and info booth 68 used info booth 83 did not use the library 43 used only the card cat explain how the info can be used to
asked by jessica 
8th grade
is light from a fire matter
asked by jeremias 
math
is this correct? 1.a jar contains 5 white, 15 violet,and 21 blue marbles. a marble is drawn at random. P(violet or white) answer: 5x15x21= 1575 15x5=75 75/1575= 1/21 2. a number from 10 to 16 is drawn at random. P(a number greater than 14) answer: 2/7
asked by Jane 
2nd grade
wha is a parallel sides
asked by ryan 
French
If you're using the future tense, should the second verb be in the future as well? I'm trying to say I would like to study journalism. Is it J'aimerais etudier journalisme OR J'aimerais etudierai journalisme? Merci beaucoup!
asked by Leslie 
Bus 210
I need to make a slide presentation one of the slides has to do with transaction processing system. Can someone tell me where I can start?
asked by Tracie 
college
Perform the indicated operation (x3 + 2X5) + (3x3  X2  7)
asked by Anonymous 
CHEMISTRY (Help please)
Compare the results of the two measurements of a heat of neutralization (HCl&NaOH=11.58 kcal/mol) (CH3COOH&NaOH=13.06kcal/mol). Estimate the error in this. How close would they have to be to be considered identical? Quote numbers to justify your answer
asked by Michelle 
Physical Chemistry
Assuming that the activation energy is about 111kjmol1, calculate the fractional variation in the rate constant that would result from a temparature of 323.15 K
asked by Teri 
Physics
Under less than ideal conditions, a student pushes a 6 kg cart holding 2 boxes of books up a ramp to a platform that is 1.8 m high in 42 sec. Each box contains 12 kg of books. The ramp is inclined at an angle of 15 degrees. He pushes w/ a steady force of
asked by Ronald 
math
how to find the period of y = cos(6x)from your graph. what is the period of y=cos(6x) in radians?
asked by subash 
Hard Latin 2 translation no idea
Primum octo paria servorum eiusdem gentis, ab ultima Sarmatia processerunt; sed minus acriter pugnaverunt quam populus exspectabat et, omnibus irridentibus, ex arena discesserunt. Postea decem Thraces !@#$%^& decem Britannis melius pugnaverunt. Unus e
asked by alex Karp. 
Greenhouse effect
im doin a project on da greenouse effect if you know any neat facts ill be happy to hear what u have 2 say
asked by Anonymous 
PreCal
how do we put x^22y^2=4 into a standard equation???
asked by Soto 
Math
I have tried to figure out this problem and I just don't seem to understand. Could someone please help? I need to write a solution in interval notation for x
asked by B.B. 
Science
• Describe forces resulting from natural phenomena that can have severe consequences on structures in the environment and identify structural features that help overcome some of these forces
asked by RJ 
11th grade Algebra 2
For each of the following sets determine it the represent the side lengths of a right triangle? A. 5, 6.5, 7.9 B. 1.6, 1.2, 2 C. 5, 1.3, 1.5 D. 1.5, 2, 2.5
asked by David Nipp 
grammar
In the following sentence, the comma is used correctly with an introductory clause: “Training for the upcoming tenmile marathon, Lizette includes more protein and complex carbohydrates in her diet.
asked by Anonymous 
grammar
which is correct 1,2,or 3 Paloma did not make it to work for, her car broke down on the freeway. Paloma did not make it to work for her car, broke down on the freeway. Paloma did not make it to work, for her car broke down on the freeway.
asked by Anonymous 
Bibliography
How do you write in APA format a bibliography?
asked by Fresh 
math
paul paints a house in 4 hours, mike paints the same house in 6 hours. how long will it take them both to paints this house?
asked by karen 
calculus high school
7y^4+x^3y+x=4 using implicit differentation, how do i solve this problem. it is a textbook example but the partwhere i "use the chain rule on the first term" doesn't make sense to me because they get d/dx 7y^4+(x^3dy/dx +y d/dx x^3)+d/dx x
asked by k 
Health
(Patient SelfDetermination Act) How do you think records management procedures have had to respond to this piece of legislation?
asked by earth 
English
Thank you very, very much for your last corrections! Can you tell me if the following expressions are possible and therefore correct? 1) When approaching/charging the dragon, Beowulf raised his shield and drew his sword. Differently, in contrast, (can you
asked by Franco 
Science
why do plastics have to be separated before recycled? Like different kinds of plastics are separated by why? Im on the organic chem unit right now.
asked by Lena 
3rd grade
refer to the frequency table to anwser the questions
asked by haley 
To: bobpursley
Can you please check my other science posts as well. They are still on the 1st page, thank you very much:)
asked by Sara 
algebra
Solve 0.3+4
asked by jess 
VOCABULARY
INCESSANT HAMMERING
asked by MISS AYON 
spanish
Form complete sentence using the imperfect: Cada semana/yo/asistir a/escuela primaria
asked by daniel 
Physics
What would be some everyday items that would be good insulators to protect three eggs that I have to drop from the top of the football bleachers in an approx. 2 quart size container? I can't use food or packing peanuts, bubblewrap, etc. Thanks.
asked by Lynn 
Geology
How can we calculate the volume of a cylinder without knowing the mole of He and applying ideal gas low with the variable of pressure.
asked by Arijit 
Intro Chemistry
Whats the name for HI(aq)? I thought it was Hydrogen Iodide, but that's incorrect, does the aq change the name?
asked by echem 
math
a 46 5/16 lb bag of nuts is packaged in 1 3/4 lb containers. the remaining nuts are given to the person packing the nuts. how much does the person get? justify your answer
asked by michele 
math
george owns a brick home that has a replacement value of $98,000. he insured it for 90% of its replacement value he lives in an area rated fire protection class 10. what is his annual policy premium?
asked by kk 
math
find the greatest possible area for the given perimeter for rectangular bumper car rides p=60in
asked by janelle lopez 
Alkalis and Acid
Two alkalis and two acid used in the labratory
asked by Tiatun 
social studies
How do people choose where to settle and live ?
asked by hannah 
literary
what is a good analogy for the word topic
asked by harmony 
health management
A health agency experience an average 150+ days in it's receivables. Would you look to a 90 day or 30 year mortgage fo financing
asked by BarBara 
3rd grade
how do environmenys change?
asked by valetino 
math/chem
If a cube with edges of 1.000 cm weighs 25.68 g, what would the mass of a cube of the same material with sides 2.66 cm in length be? I got 68.301 but it was wrong... i basically made a ratio 25.68 g/1cm and did 2.66cm x 25.68 (dimensional analysis) This
asked by echem 
math
if your monthly net pay is $1500 what is the recommended FHA minimum
asked by kk 
Literacy
Do the benefits of the Basal Approach outweigh the drawbacks?
asked by Anonymous 
Technology
22. Telecommunications is a growing field of technology. We use such things as televisions, telephones, radios, and computers to communicate using electromagnetic waves. Take one of these devices and explain the five steps it must go through in the
asked by y912f 
Mica
Can someone factor this for me? y=x^44x^3+16 i could only get up to: y=(x2)(x^32x^24x8)
asked by Math factoring 
Technology
21. You have learned that there are seven inputs common to all technological systems. List these inputs and give an example for each one. 21. There are seven inputs that are common to all technological systems. These include people, materials, tools
asked by y912f 
Chemsitry
What is the phase of a compound at 600 mmHg and 32oC if it melts at 35oC when pressure is 760 mmHg? Its triple point occurs at 200 mmHg and 36oC.
asked by Dan 
algebra
x – 2y = 6
asked by jeff 
Math
The width of a rectangle is fixed at 16 cm. What lengths will make the perimeter greater than 78cm? Would the answer be 23 because 16*2+23*2=78cm or would the answer be 24. Because the perimeter is greater than 78cm
asked by Richard 
Technology
Is there anyone who can double check this for me? 21. You have learned that there are seven inputs common to all technological systems. List these inputs and give an example for each one. 21. There are seven inputs that are common to all technological
asked by y912f 
english
how do you write a survey questions
asked by hemi 
history
i need good references for political groups during the russian revolution
asked by blue 
algebra 2
t^211t+28=0
asked by april 
mathplease help
if a=2^3*3^7*5^3*11^4 and b=2^2*3^5*7^2*11*13,find the following.(leave your anwer written with exponents)a.GCD b.LCM
asked by yolanda 
math
division (x to da 2nd power + x  6) / (x  2)= ?
asked by crystal 
4th grade
what does 9 over 18 and 10 over 34 means?
asked by kaleyah 
health
why is a healthy lifestyle important in school
asked by tiffany 
jsp
can you modify an attribute of the application object after it has been set?
asked by cl 
algebra
x/x+3 + 2/5=0
asked by Anonymous 
Europe
is the european union federation, a confederation or something else?
asked by kev 
Grade 12 English  College Assignment
I have to mention the route I will take from my home to Seneca@York via public transit. Should I mention the route that takes me back home from the college?
asked by AL 87 
6th grade math
76&4/9 please help!
asked by Anonymous