Questions Asked on
November 6, 2012

chemistry
For which of the following mixtures will Ag2SO4(s) (Ksp=1.20E^5)precipitate? More than one answer can be selected. a.) 150.0 mL of 0.10 M Na2SO4(aq) and 5.0 mL of 0.20 M AgNO3(aq) b.) 150.0 mL of 0.10 M Na2SO4(aq) and 5.0 mL of 0.30 M AgNO3(aq) c.) 150.0

geometry
A regular heptagon has an apothem of approximately 6.5 ft and a perimeter of approximately 44.1 ft . Based on these measurements, what is the area of the heptagon?

economics
Could someone check my work? Please When the government attempts to cover large deficits by creating more money, what is the probable result called? government borrowing hyperinflation (my choice) excess currency full employment 2. What is one of the major

Chemistry
Which of the following gases will effuse through a hole in a balloon fastest? a.Kr b.NO c.N2O d.NO2 e.ArNO2

Chemistry
Write a balanced equation for the incomplete combustion of gaseous pentane (C5H12) which combines gaseous oxygen to form carbon dioxide, gaseous water and carbon monoxide.

Chemistry
Write a balanced equation for the combustion of gaseous ethane (C2H6) a minority component of natural gas, in which it combines with gaseous oxygen to form gaseous carbon dioxide and gaseous water.

English 4
Hamlet Act 1 scene 14 Most of the advice Polonius gives Laertes concerns etiquette and ways to make a good impression on other people. Name the precept from Polonius's farewell speech to his son that seems to contain the best advice on how to be a good

GRAMMAR
THE PATIENT WAS PLACED IN THE WHEELCHAIR WITH THE FRACTURED TIBIA WHAT KIND OF AGREEMENT ERROR IS IT

a;gebra
The perimeter of a rectangle is 34 ft. The length is 1 ft longer than the width. Find the dimensions. Write a system of linear equation and solve the resulting system. Let x be the length and y be the width. 2x+2y=

Math for Steve
1. Identify the part, whole, and percent in the following statement: Find 15% of 750. a. part = 750, whole = n, percent = 15 b. part = 15, whole = 750, percent = p c. part = n, whole = 750, percent = 15 d. none of these 2. Write a percent equation that can

Chemistry
Aspirin is prepared by heating salicylic acid, C7H6O3, with acetic anhydride, C4H603. The other product produced is acetic acid, C2H402. C7H6O3+C4H6)3>C9H8O4+C2H4O2 What is the theoretical yield in grams of aspirin, C9H8O4, when 2.00 grams of salicylic

Physics... URGENT !!!!
A 66.7kN car is travelling at 66.5 mph when the driver decides to exit the freeway by going up a ramp. After coasting 418 m along the exit ramp the car\'s speed is 28.9 mph, and it is h = 13.1 m above the freeway. What is the magnitude of the average drag

Chemistry
Which of the following reactions will result in a reduced total pressure? a. CH4(g) + 2O2(g) → CO2(g) + 2H2O(g) c. 2HI(g) → H2(g) + I2(g) b. 2N2O(g) → 2N2(g) + O2(g) d. 2H2(g) + O2(g) → 2H2O()

Chemistry
The density of an unknown gas is 1.72 g/L at 750.0 torr and 30.0°C. Which of the following could be the unknown gas? a. CS2 b. NO c. N2O d. NH3 e. N02

physics
A small sphere of mass m = 7.50 g and charge q1 = 32.0 nC is attached to the end of a string and hangs vertically as shown in the figure. A second charge of equal mass and charge q2 = –58.0 nC is located a distance d = 2.00 cm below the first charge. (a)

english
At his entrance before the king, all the people gave a great shout. The queen of Appamatuck was appointed to bring him water to wash his hands, and another brought him a bunch of feathers, instead of a towel to dry them: having feasted him after their best

chemistry 30 concentration of a product
calculate the concentration of the products of the following equilibrium when the equilibrium constant is 12.3 and the equilibrium concentration of nobr2 is 2.17 mol/l

Finance
The following information was available as of the close of business June 1, 2004 on government of Canada bonds. Coupon...Maturity.....Price.....Yield 5.00%......June 1, 2005......102.35......2.60 10.50%......June 1, 2006......113.91......3.26

chemistry
An ideal gas in a sealed container has an initial volume of 2.50 L. At constant pressure, it is cooled to 14.00 °C where its final volume is 1.85 L. What was the initial temperature?

Chemistry
Diethyl ether is a volatile organic compound. the vapor pressure of diethyl ether is 401 mm Hg at 18 degrees celsius and the change in H vapor = 26.0 kJ/mol. Calculate the vappor pressure of diethyl ether at 25 degrees C.

english
I have to write these sentence with the same meaning. Can anybody look them up, please? 1. We will refund your booking fee, provided you cancel 48 hours in advance. > We will only refund your booking fee, if you cancel 48 hours in advance. 2. I wish you

Valencia
2.0L of a 2.0M HCl solution is added to water so that the final volume is 6.0L

Physics
How do you calculate the resultant force of 2 soccer balls, kicked at the same time, one with a force of 60N and the other 85N?

Chemistry
The combustion of ethane: 2 C2H6 (g) + 7 O2 (g) > 4 CO2 (g) + 6 H2O (g) At the same temperature and pressure, what is the maximum volume in liters of carbon dioxide that can be obtained from 15.9 L of ethane and 52.3 L of oxygen?

physics
A 1,660 kg car is parked on a hill with a slope of 8.0°. Its brakes and transmission are locked in position to keep the car from rolling. The coefficient of static friction of the rubber tires on the asphalt road is 0.14. What is the force of static

Finance
A salesperson in a furniture store receives a weekly salary of $1,250. She also earns a commission of 6% on all sales for the week and a bonus of 2% on all sales above $5,000 for the week. How much would she earn if her total sales for the week were

math VERY URGENT+IMPORTANT
Farmer McDonald is building a fence. He will place posts six feet apart and stretch the wire fencing between the posts. If his pasture is thirtysix feet long and twelve feet across, how many posts will he need? Please help immediately1

Physics Help!
An automobile fuel tank is filled to the brim with 45.3 liters (12.1 gallon) of gasoline at 14.5 degrees C. Immediately afterward, the vehicle is parked in the Sun, where the temperature is 34.5 degrees C. How much gasoline (in Liter) overflows from the

Physics Help!
Find the total kinetic energy content of 1.55 moles of an ideal gas at temperature 435 K

Geometry
BC has endpoints B(5,9) and C(4,3). Find the coordinates of the midpoint of BC.

geometry
Need help on perpendicular bisectors!:(

Math
2sin^20/cos0 = sec0 + cos0 * 0 = Theta

geometry
Triangle lmn is congruent to hij. Angle l measures 35 and angle m measures 65 and angle j measures 2x. Find the value of x

Chemistry
what mass of water will be formed by reaction of 3.50g of methylamine (8CH3NH2) with 15.0g of perchloric acid (13HClO4)? Answer is 99.1. How do you work this?

business
consider the factorsw from the situationa leadership theory outlined in figure 12.4. Apply these factors to Facobs and Windber

Chemistry
How would I go about creating a Lewis Dot structure for the Calcium Carbonate and Magnesium Hydroxide? I know how to do it for any compound with two elements such as SF5, but I don't know how to approach it when there's a polyatomic ion involved and there

physics
calculate the electric flux through the curved surface and base of a right hollow cone of height h and base radius r when charge q is placed at its vertex?

ALGERBRA,PLEASE HELP!!!!!!
Given a scale factor of 2, find the coordinates for the dilation of the line segment with endpoints (–1, 2) and (3, –3). (1 point) A) (–2, 4) and (6, 6) B) (2, 4) and (6, 6) C)(–2, 4) and (6, –6) D)(2, –1) and (–3, 3) 2. Given a scale factor

Chemistry
In an experiment, 25.0 mL of a gas with a pressure of 1.00 atm is contained in a balloon at 25.0°C. The balloon is then cooled to 5.0°C, and the pressure is found to be 0.750 atm. What is the volume of the gas under the new conditions?

Chemistry
How many moles of propane are contained in a 5.00 L tank at 450 torr and 25°C?

Lang. Arts
2. What is the subject of the sentence below? Try giving the dog less water and he won’t spill it on the floor. a. an understood “You” b. he c. the dog d. There is no subject. This is a fragment. Read the following excerpt from Jesse Jackson’s

math
If there are 8 boys and 9 girls in a classroom , what is the ratio of boys to girls ?

Algebra
4y^23ay+8y6a. How to factor

Math
A state creates license plates that each contain two letters followed by three digits. The first letter must be a vowel ( A, E, I, O, U ) and duplicate letters and digits are allowed. How many different license plates are possible?

Chemistry
A sample of hydrogen is collected over water at a total pressure of 648 mm Hg at 22 oC. The vapor pressure of water at 22 oC is 19.8 mm Hg. The partial pressure of the hydrogen is __________.

ap chemistry
A 2.5 g of sample megnesium carbide is added to 8.8 ml of water inside calorimeter of 700 ml of water how do we find limiting reactant

Trigonometry
Alrighty I have to find two real world sinusoidal functions. I found: 1. A piston in an engine moves up and down in a cylinder. The height, h centimeters, of the piston a t seconds is given by the function: h= 120 sin(πt) + 200. 2. You can find the

world history
What was the type of monarchy where rulers are limited by law?

Chemistry
If a .01M Mn(NO3)2 solution has an ammonia concentration of 6M, would a precipitate form? Calculate the ion product and compare to Ksp. I'm way too confused. I'm pretty sure a precipitate would form so I set up an ice table but don't know where to go from

math
if 2 small containers and 1 large container together hold 10 cups of water, and 1 large container minus 1 small container leaves 4 cups of water, how many cups of water does the large container hold.

Chemistry
Consider the reaction CaSO4(s)rightleftharpoons Ca^2+(aq)+ SO_4^2(aq) At 25 C the equilibrium constant is Kc = 2.4 \times 10^5 for this reaction. If excess CaSO4(s) is mixed with water at 25C to produce a saturated solution of CaSO4, what are the

Physics Help!
The New River Gorge bridge in West Virginia is a 514 m long steel arch. How much will its length change between temperature extremes 20.3 degrees C and 32.7 degrees C

physical science
A 30.0kg child standing from rest slides down a water slide with a vertical height of 10.0m. What is the childs speed (a)halfway down he slides vertical distance and (b)threefourths of the way down? (Neglect friction?

Math
For a certain set of five numbers, the mean of all but the largest is 80, and the mean of all but the smallest number is 90. What is the range of the set of five numbers?

Finance
A dealer in government securities currently holds $875 million in 10year Treasury bonds and $1,410 million in 6month Treasury bills. Current yields on the Tbonds average 7.15 percent while 6month Tbill yields average 3.38 percent. The dealer is

science
Two blocks of different temperatures are brought together. Block A is a 360.0kg block is made of Material X which has a temperaturedependent specific heat. Its initial temperature is TA = 200.0¡ã C. Block B is a 1000.0kg iron block with an initial

Physics PLEASE HELP
A 10.0 kg cylinder rolls without slipping on a rough surface. At an instant when its center of gravity has a speed of 16.0 m/s, determine (a) the translational kinetic energy of its center of gravity.(b) the rotational kinetic energy about its center of

Physics HELP!
A warwolf, or trebuchet, is a device used during the Middle Ages to throw rocks at castles and now sometimes used to fling pumpkins and pianos. A simple trebuchet is shown in the figure. Model it as a stiff rod of negligible mass 3.00 m long and joining

Physics
A 9.00 kg mass is connected by a light cord to a 1.00 kg mass on a smooth surface as shown in the figure. The pulley rotates about a frictionless axle and has a moment of inertia of 0.300 k∙m2 and a radius of 0.500 m. Assuming that the cord does not slip

biology
What is the different between tissuespecific knockout mouse and an inducible knockout mouse

Science
The products of the reaction between zinc and sulfuric acid are zinc sulfate, hydrogen sulfide, and water. Balance the equation using the electrontransfer method.

trigonometry
2cotx + 1 = 1 over [0,2pi)

Chemistry
what mass of nitrogen dioxide (8NO2) will form by reaction of 3.50 mole of perchloric acid (13HClO4) with excess methylamine (8CH3NH2)? Answer is 99.1 g. How do you work this?

Trigonometric
Given that sinx = 7 /25 pi/2

Physics PLEASE HELP
A painter climbs a ladder leaning against a smooth wall. At a certain height, the ladder is on the verge of slipping. Let the mass of the painter be 69.0 kg, length = 2.80 m, the ladder’s mass to be 21.0 kg, θ = 57.0°, and the coefficient of friction

geometry
can someone help please? Find the measure of the smallest angle, ∠HFG, if ∠ GHF = 92° and ∠HGF = 72°. 16 20 26 15

English 8R  help!!!!!
the princess diaries movie "reviews" in quotes???? you know how in movies trailers they say the movie review quotes "5 star" or "best film this year" I couldn't find any movie reviews in quotes can you help me, i need about at least 3 for my movie poster

Chemistry
The gas sulfur dioxide, SO2, oxidizes to form another gas, sulfur trioxide, SO3. How many oxygen atoms are present in 3.20 g of sulfir trioxide?

physics
From the moment a 42 m/s fastball touches the catcher's mitt until its completely stopped takes 0.014 s. Calculate the average acceleration of the ball as it is being caught.

Chemistry
What is the rootmeansquare speed of N2O at 25°C?

algebra
What is the vertex form of the equation? y=x^2+12x4

algebra
What is the expression in factored form? 2x^2+16x+24

algebra
Use the quadratic formula to solve the equation. x^27x6=0

math
destiny is going to build a patio. she wants the patio to be 20 feet by 35 feet. what is the perimeter of the patio in yards?

algebra
What are the solutions? 1/2x^2+2x+3=0

math
3 1/2 + 2 5/8 4 1/4=

math
Consider the relation R = (a,b),(a,c),(c,c),(b,b),(c,b),(b,c) on the set A = a,b. Is R reflexive? Symmetric? Transitive? and why or why not.

ENGLISH LIT
The theme of the book "Tolstoy" the death of ivan ilyich. i read the book but i don't get the theme.

MATH
mark scores 6 points. amy scores 11 points. how many points does mark need to tie the game? WRITE A NUMBER SENTENCE TO SOLVE. THANK YOU

math
If y varies diretly with x, write an equation for the direct variation. then find each value. Find y when x = 10 if y = 8 when x = 20 If think I can find the value by y/10 = 8/20 with the answer for the value is 4. My problem is how to find the equation.

English 8R  Reflections help!!!!
I can't think of a topic to write for the Reflections This is not an English assignment and plus the deadline is 11/14/12, I just want to write the essay. I'm already doing visual arts but I want to try the literature the theme is "The Magic of a Moment" I

Grammar
Is tthe following statement dependent clause? So Chad bought a new bat

English II Please Help
When the movie Star Wars premiered in 1977, it was both surprising and a revolution in its special effects. Is this correct or does it have bad speeling ?

Math
Stephanie got a travel pack of 4 aspirin, each 500 milligrams. How many total grams are in the pack 2 grams?

physics
a jet plane traveling at +87 m/s lands on a runway and comes to ret in 11 s. a)Calculate its uniform acceleration b)Calculate the distance it travels

Chem
How many grams of CO2 can be produced when 200 g of C5H12 are reacted with 300 g of O2?

physics
Consider the 57 N weight held by two cables shown below. The lefthand cable is horizon tal. 57 N 52 a) What is the tension in the cable slanted at an angle of 52? Answer in units of N

Pre Calc
How to prove tan4x = 18 sin squared of cos squared of x

physics
A sled whose total mass with cargo is 30.0 kg rests on ice. The coefficient of static friction is 0.20, and the coefficient of kinetic friction is 0.15. The sled is attached to a rope, horizontally, in which the tension force is slowly increased. How much

Chemistry
The density of ethane, C2H6, at 25 oC and 1.10 atm is ___________.

english 2
Neither pesticides nor hormones are used in the production of organic foods. Is there any mistakes here ?

MATH
mark scores 6 points. amy scores 11 points. how many points does mark need to tie the game? WRITE A NUMBER SENTENCE TO SOLVE. THANK YOU

precalc
two lighthouses A and B are positioned along the coast.A ship is positioned 30 miles from lighthouse A and 40 miles from lighthouse B.The angle between the line of sight from the ship to lighthouse A and the line of sight to lighthouse B is 33 degree. what

math
rule= input3 output 2 input 6 output3 input 9 output4 input 12 output 5

vocabulary
A sentence with offhand oversight prior proclaim

Chemistry
Which of the following will result in a chemical change?

precalc
a lifeguard sits on the lifeguard stand that is about eight feet high.he suddenly notices that a swimmer is struggling in the water.the angle between the base of the lifeguard stand and the swimmer is about 102 degree,and the straight line distance between

Chemistry
convert 458166 atoms of H20 to moles

High school
Maths;{2X2Y=4+{3X+4Y=6

precalc
two observers 3 miles apart and facing each other find that the angles of the elevation of a balloon in the same vertical plane with themselves are 28degree and 31 degree respectively.find the distance from the balloon to the observer located at the 31

Science
A 52kg tricyle left a child's yard at 3m/52. What is its force ?

calculus
Find the equation of a straight line that passes through a point (1,5) and tangent to curve y = x^3

PreCalculus
Trigonometric Functions, Radian Measure ∏

Social studies
Where can I get the information about the origin of Thanksgiving Day in detail? There are questions related Pilgrim Fathers who left for the nes land. Would you answer them, please? 1. Where did they (Pilgrim Fathers) leave for the North America? 2. Did

History
What was the contribution of Alexander the great to the world today?

Physics
two satellites are launched from earth to the same altitude. One is twice the mass of the other. How will their periods compare?

world history
What factors helped spur European exploration?

Algebra/Biology
y=2.12x + 0.004 and Protein A treated w/Bradford Reagent and has an A595 of 0.53. Can you please explain how to calculate this problem so I know in the future? Thanks for your help.

Science
Why are dog fleas more successful parasites than bacteria that causes deadly diseases?

physics
An 8 g bullet is shot into a 4.0 kg block, at rest on a frictionless horizontal surface. The bullet remains lodged in the block. The block moves into a spring and compresses it by 7.9 cm. The force constant of the spring is 1400 N/m. What is the impulse of

Physics B
Objects with masses of 105 kg and 528 kg are separated by 0.482 m. A 41.1 kg mass is placed midway between them. 0.482 m b b 105 kg 41.1 kg 528 kg Find the magnitude of the net gravitational force exerted by the two larger masses on the 41.1 kg mass. The

Chemistry
Is this always true, sometime true, or never true? The orbitals of a principal energy level are lower in energy than the orbitals in the next higher principal energy level. I'm thinking sometime true but I can't figure out how to explain why it sometime

physics
A car is rounding a curve that is the arc of a circle with a radius of r . If the car has a constant speed of 10 m/s, and its acceleration is 5 m/s 2 , what is the radius of the curve?

math
bill and ted combined age is 40. Eight years ago, bill was 2 years younger than ted is now. how old is bill now?

physics
a jet plane traveling at +87 m/s lands on a runway and comes to rest in 11 s. a)Calculate its uniform acceleration b)Calculate the distance it travels

math question
What is 0.8 x 12 and what is 0.10 x 12?

Math
One calling plan offers long distance calls for .03 per minute. Another plan costs $2.00 per month but offers long distance service for 0.01 per minute. Write and solve an equation to find the number of long distance minuets for which the two plans would

Science
2. Which statement is true of Pwaves? a. They travel the fastest through rocks. b. They vibrate at 90° to the wave motion. c. They are last to reach the epicenter. d. They are the most damaging. 4. When rocks break, they cause _____ that move throughout

Physics Help!
Gas is contained in an 8.45 liter vessel at a temperature of 19.8oC and a pressure of 8.70 atm. Determine the number of moles of gas in the vessel. Do not enter units.

Physics Elena please help!
Consider the following mass distribution, where x and y coordinates are given in meters: 7.0 kg at (0.0, 0.0) m, 3.0 kg at (0.0, 5.0) m, and 7.0 kg at (4.0, 0.0) m. Where should a fourth object of 5.0 kg be placed so that the center of gravity of the

Chemistry
I got 4.9*10^3 M. Thanks and If the resulting solution has a volume of 1.9L , what is the minimum mass of CaSO4 (s) needed to achieve equilibrium?

Physics Elena please help!
A large grinding wheel in the shape of a solid cylinder of radius 0.450m is free to rotate on a frictionless, vertical axle. A constant tangential force of 180 N applied to its edge causes the wheel to have an angular acceleration of 0.870 rad/s2. (a) What

math
A product is on sale for 30% off of normal selling price of $12.00 per unit and each unit cost is $5.00. What is the gross profit percentage?

CHEMISTRY: URGENT
1) the element Q has the electronic configuration 1S2, 2S2, 2p6, 3s2, 3p6, 4s2 3d10, 4p1. Write the atomic #. Q exist as 69Q and 71Q. What is the significance of the 2 #'s. What does it mean. B) find the atomic mass if 69Q is 60% anf 71Q is 40%

geography
Southeast Asia, which seas lie to the east and west of the Phillipines?

math
The scale factor for two similar rectangles is 3. If the area of the smaller rectangle is 8 m2, what is the area of the larger rectangle

comparing different types of currency.
if you could buy 10 apples for 1 american dollar how many apples could you buy with 6.25 chinese yuan.

Physics
a 14.0 N·m torque on a wheel causes angular acceleration 11.3 rad/s2, what is the wheel's rotational inertia?

algebra
what happened when the crossword puzzle champion died? anwsers to this would really help me

Math
A bicycle travels 42 meters for every 20 revolutions of the wheel. How many revolutions would the wheel make in a kilometer?

Math
A bicycle travels 42 meters for every 20 revolutions of the wheel. How many revolutions would the wheel make in a kilometer?

maths
let G be a group with operation . and let p,q be two elements of G. simplify p.q.q.q^1.p^1.q^1 as much as possible.does answer change if G is ABELIAN?

history
i need help finding a map of the 7 natural wonders of the world.

precal
Find the Difference quotient: 4/(x3)^2

Music
List of choral groups

visual
which one of the following is an advantage of setting up a family day care home

biology
What is the different between tissuespecific knockout mouse and an inducible knockout mouse

college algebra
given the folowing quadratic equations find the vertex the axis of symmetry the intercept the domain the range the interval where the function is increasing andthe interval where the function is decreasing graph the function y=X^2+4x

Math Statistics
The height of four students are as follows: Pat  112, Gerald  123, Mark 100, Ricky  125, Roy  143. If Jon is included, the mean height would be 110. What is Jon's Height?

Math Statistics
Kesha's mean grade for the first two terms was 74. What grade must she get in the third term to get an exact passing average of 75?

Math Statistics
Kesha's mean grade for the first two terms was 74. What grade must she get in the third term to get an exact passing average of 75?

math
Ashley needs $30 more in order to buy a concert ticket. she has saved money from her birthday and christmas presents. Her bday present was 1.5 times the amount of her christmas present. Her bday present was $60. if she saved 80% of her presents, how much

Physics
A 15 kg uniform ladder leans againt a wall in the atrium of a large hotel. The ladder is 8m long, and it makes an angle as 60 degree with the floor. The coefficient of static friction between the floor and the ladder is u+ 0.45. Assume the wall is

Math Statistics
The mean height of Pat, Dex, Allan, Dan and Roy is 68 inches. If George is included in the group, the mean height becomes 67 inches. How tall is George?

chemistry
a pressure of 96.5Kpa is exerted by a mixture of nitrogen gas and water vapor in a equilibrium with liquid water at 18 degree celcius , what is the partial pressure exerted by the nitrogen gas?

English  Classics
I've been writing a personal response on the Great Gatsby and need some specific examples of how my idea "Money does not equal happiness" or "Money corrupts" is relevant to today/today's society

algebra
3 over a+2 over 3a =11 over 15

Chemistry: Need Help
Suppose there is a simulation of 25 helium molecules and 25 nitrogen molecules on the right side of a box before the rate of effusion. Suppose you carry out this simulation and it does not give a precise quantitative reflection of Graham's Law. >What

algebra
I have to simplify this please help how to solve the problem involving rational algebraic expressions 3 over a+2a over 3a=11 over 15

art
How to make a concept about abstract painting

college algebra
given the following rational, find the horizontal asympotes the vertical asymptotes if any and the oblique asymptotes if any f(x)=x^2x2 over 2x^2x10

Physics
If a sonar echo takes 2.20 seconds to return from a whale, how faw away is the whale?

physics
An engine does 17700 J of work and rejects 6320 J of heat into a cold resevoir whose temperature is 283 K. What would be the smallest possible temperature of the hot resevoir?

Ap chem
If 200 ml of .300 molarity of silver nitrate are mixed with 350 ml of .500 molarity calcium chloride ions how many grams of percipitate are formed? How many moles of each ions are present?

history
how are longhouses and present day homes alike '

chemical reaction engineering
Propane steam reforming over an alumina supported Ni metal catalyst: C3H8 (g) + H2O (g) → CO2 (g) + H2 (g) is proposed to follow these mechanisms: C3H8 + 2S1 ↔ C2H5S1 + CH3S1 (M1) H2O + 2S2 ↔ OHS2 + HS2 (M2) CH3S1 + OHS2 → CH3OS1 + HS2 (M3)

language
why is there a conflict between zeus and human beings

Maths
The sum of 5 numbers is p. If each number is increased by 40, what is the new sum of numbers?

Physics HELP!
A solid, horizontal cylinder of mass 11.0 kg and radius 1.70 m rotates with an angular speed of 5.10 rad/s about a fixed vertical axis through its center. A 1.21 kg piece of putty is dropped vertically onto the cylinder at a point 0.600 m from the center

Statistics Please help!
A company claims that cancer patients using drug X will live at least 8 more years. n=25 = 8.5 year s = 1.5 year a) Test at a=.01 b) Give the CIE at 95%

Stat Help
The Momoland Springs Company claims that there are at most 1 ppm (parts per million) of benzene in their water. Test at a=.10 n=25 = 1.10 ppm s = .20 ppm

Social studies
Compare and contrast how that location of Mesopotamia affected trade and culture.

physics
A solid disk of radius 0.20 m and a mass of 1.0 kg starts at rest and then speeds up to 100 rad/s in 10s. What is the torque that produces this rotational acceleration?

AP Calc for Reiny
You did just fine and your second derivative is correct, if you meant (6y^2  4x^2)/(9y^3) except they took it a bit further. notice your numerator is 4x^2 + 6y^2 from the original 2x^2  3y^2 = 4 , then 4x^2  6y^2 = 8 , and 4x^2 + 6y^2 = 8 to get

algebra 2
3x+2y=12 x2y=4

Chemistry
y=2.12x + 0.004 and Protein A treated w/Bradford Reagent and has an A595 of 0.53. Can you please explain how to calculate this problem so I know in the future? Thanks for your help.

Business Math
Hafers, an electrical supply company, sold $4,800, 12%, 90day note for a time extension of a bill for goods bought by Ron Prentice. On June 12, Scott discounted the note at Able Bank at 10%. What is the Maturity Value (MV).

math
A carpet measures 6 meters and 5 decimeters in length by 3 meters and 2 decimeters in width. What is its area in square meters?

Physics
A 2.01 kg block starts from rest at the top of a 25.8degree incline and accelerates uniformly down the incline, moving 2.13m in 2.98 seconds. What is the magnitude of the acceleration of the block?

college admission
What are the foreign language requirements and how to get credit for them before attending for The Ohio State University?

physics
A solid disk of radius 0.20 m and a mass of 1.0 kg starts at rest and then speeds up to 100 rad/s in 10s. What is the torque that produces this rotational acceleration?

Physics
A box of books weighing 328N moves with a constant velocity across the floor when it is paged with a force of 385N exerted downward at an angle of 25.3 below the horizontal. Find muK between the box and the floor

Maths
There were 40 members in a hockey club. 3/8 of them were girls. When more girls joined the club, the percentage of the number of girls increased to 75%. How many more girls had joined the club? Some teachers attended a workshop. They were divided into

AP Calc for Reiny
You did just fine and your second derivative is correct, if you meant (6y^2  4x^2)/(9y^3) except they took it a bit further. notice your numerator is 4x^2 + 6y^2 from the original 2x^2  3y^2 = 4 , then 4x^2  6y^2 = 8 , and 4x^2 + 6y^2 = 8 to get

Maths
There are a total of 70 pebbles in Bag A and Bag B. There are a total of 120 pebbles in Bag B and Bag C. Bag C contains 3 times as many pebbles as Bag A. How many pebbles are there in Bag B? There were 27 pineapple tarts and murukus. The ratio of the

please check my answer
Consider the following equations. N2H4(l) + O2(g) N2(g) + 2 H2O(l) ÄH = 622.2 kJ H2(g) + 1/2 O2(g) H2O(l) ÄH = 258.5 kJ H2(g) + O2(g) H2O2(l) ÄH = 187.8 kJ Use this information to calculate the enthalpy change for the reaction shown below. N2H4(l) +

chemistry
Consider the equation: 2NO2(g) N2O4(g). Using ONLY the information given by the equation which of the following changes would increase the molar concentration at equilibrium of the product N2O4(g)?

Maths
Gerry earns $0.60 for every canned drink he sells. He earns an extra bonus of $5 for every 20 cans he sells. How many cans does he sell if he earns $53.40? Kevin and Janet had 480 books in total. After Kevin gave 1/9 of his books to Janet, they had an

MATH
Calculate the interest on a $1700 credit card bill that shows a 22% APR, using the average daily balance method. Assume you sent a payment of $375 on the first day of a month that has 30 days and it takes 5 days for this payment to be received and

Physics
Consider the 56 N weight held by two cables shown below. The left hand cable is horizontal. What is the tension in the cable slanted at an angle of 38degrees

TRIG
Given that tanx = 1/sqr(15) and secx 4/sqr(15) find the value of sinx

TRIG
show that cos(pi x) = pi cosx is not an identity by finding a single value of x for which it fails to hold.

algebra
come up with 2 real world examples of situations that use function rules. think about daily life, your home, or the community you live in for ideas.

Physics
Two skaters, Elena and Tara, face each other on the ice. Elena has a mass of 57.4 kg, and Tara has a mass of 48.3 kg. Both are motionless until they push away with a force of 33 N. Then Elena has a velocity of 1.4 m/s. What is Tara’s velocity?

Math
Teresa has 4 flower pots in 4 different designs she likes to display her flower pots in different position on her window sill how many ways can she place her flower pots?

Psychology
Your body's reaction to the stress you have been under for the past two weeks is that you have become more tired and now have a sore throat. What is this called? Object–relations theory Opponent–process theory Two–factory theory Type B behavior

Statistics
To conduct a valid regression analysis, both x and y must be approximately normally distributed. True False

physics
A beam of microwaves with wavelength= 1 mm is incident upon a 9 cm slit. At a distance of 2 m from the slit, what is the approximate width of the slit's image?

Statistics
The residual sum of the squares is the numerator portion of the formula for the variance of y about the regression line. True False

algebra
a rectangular solid has a volume of 640 cubic units. the width is 3 units more than the height and the length is 1 unit more than three times the height. find the dimensions of the solid.

physics
A 10.4 kg object oscillates at the end of a vertical spring that has a spring constant of 17500 N/m. The effect of air resistance is represented by the damping coefficient b = 3.00 N¡¤s/m.

social studies
were longhouses mobile

math
draw an array for 7 times 3

Trigonometry
How do u find the angles of a triangle whose sides are in the ratio 2:4:5?

chem
(a) When a 4.75g sample of solid ammonium nitrate dissolves in 60.0 g of water in a coffeecup calorimeter (see figure), the temperature drops from 23.0‹C to 16.6‹C. Calculate ƒ¢H (in kJ/mol NH4NO3) for the solution process NH4NO3(s) ¨

physics
A student moves a box of books down the hall by pulling on a rope attached to the box. The student pulls with a force of 173 N at an angle of 27.5 above the horizontal. The box has a mass of 27 kg, and μk between the box and the floor is 0.2. The

any
Unscramble into three words. tbhlsfsffyleuriaoit

Math
Factor Completely 16xsquared+49ysquared Please help me!!!!!!!!!!!!!!

algebra 2
Previos: D(t)=1550+42t15t=1550=27t (t represtentnig time) Based on the function for D, what would be the total amount of non functional components in 2014? Let 1993 be represented by 0.

Physics
In the figure below, an object, after being released from its circular path, travels the distance OA in the same time it would have moved from O to P on the circle. The speed of the object on and off the circle remains constant at the same value. Suppose

chem urgent!
Set up a Hess's law cycle, and use the following information to calculate ÄH°f for aqueous nitric acid, HNO3(aq). You will need to use fractional coefficients for some equations. 3 NO2(g) + H2O(l) 2 HNO3(aq) + NO(g) ÄH° = 138.4 kJ 2 NO(g) + O2(g) 2

biology
Assume that a mature female vegetarian consumed 2 pounds of food daily for one year. At the end of this one year, she weighed ½ pound more than she weighed at the beginning of that year. a. What was the percentage of biomass conversion at this trophic

Science
The "resistant" threshold for gemifloxacin is >1 mg/L while the "resistant" threshold for sulfamethoxazole is >512 mg/L. Explain why there might be this great disparity of values in resistance thresholds (512fold) for each antibiotic pharmacologically

physics
A car travels at a constant speed around a circular track whose radius is 2.1 km. The car goes once around the track in 320 s. What is the magnitude of the centripetal acceleration of the car? 1 m/s2

caluculating the interest! please help
Calculate the interest on a $1700 credit card bill that shows a 22% APR, using the average daily balance method. Assume you sent a payment of $375 on the first day of a month that has 30 days and it takes 5 days for this payment to be received and

Math
Find the exact value of sin75degrees using sum identity of sine

math
Solve the following and express the answer in scientific notation: (5.4 × 10^4) × ( 4.5 × 10^8)

social
social behaviour perspectives?

Math
Find sin (xy) if sinx = 2/5 and siny = 2/3 X is in quadrant IV, and y is in quadrant I

Science chemistry
After extraction with bicarbonate in which layer is the benzoic acid?

calc 1
Water is leaking out of an inverted conical tank at a rate of 500.000 cubic centimeters per min at the same time that water is being pumped into the tank at a constant rate. The tank has height 8.000 meters and the diameter at the top is 6.500 meters. If

Physics
The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. Assuming the earth is a sphere with a radius of 6.38 106 m, determine the speed and centripetal acceleration

Physics
The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. Assuming the earth is a sphere with a radius of 6.38 106 m, determine the speed and centripetal acceleration

physics
A small sphere of charge q = +68 ƒÝC and mass m = 5.8 g is attached to a light string and placed in a uniform electric field E that makes an angle ƒá = 37„a with the horizontal. The opposite end of the string is attached to a wall and the sphere is

chem i reallyneed help
Consider the following equations. N2H4(l) + O2(g) N2(g) + 2 H2O(l) ÄH = 622.2 kJ H2(g) + 1/2 O2(g) H2O(l) ÄH = 258.5 kJ H2(g) + O2(g) H2O2(l) ÄH = 187.8 kJ Use this information to calculate the enthalpy change for the reaction shown below. N2H4(l) +

physics
A small sphere of charge q = +68 ƒÝC and mass m = 5.8 g is attached to a light string and placed in a uniform electric field E that makes an angle ƒá = 37„a with the horizontal. The opposite end of the string is attached to a wall and the sphere is

AP Calc
I need to find the second derivative for this: 2x^23y^2=4 I understand all the steps but for some reason I get the wrong numerator. I get (6y^4x^2)/9y^3 The answer is 8/9y^3

computer science
write RTL code for the following 1 bit transition and draw the corresponding logic circuit using D flipflops: a) if a=1 then copy X to W; other wise copy X to Z b)if a =1 then copy Yto X; other wise copy Y' to X.

physics
In a skating stunt known as crackthewhip, a number of skaters hold hands and form a straight line. They try to skate so that the line rotates about the skater at one end, who acts as the pivot. The skater farthest out has a mass of 80.0 kg and is 5.35 m

computer science
x is a 16 bit register and x = 8395h. what is the result of the following operation in hexadecimal notation? a: shr(x) b: cil(X) c: ashl(x) d: dshr(x)

statistics.. URGENT!! PLZ!!
In a learning experiment, untrained mice are placed in a maze and the time required for each mouse to exit the maze is recorded. The average time for untrained mice to exit the maze is µ = 50 seconds and the standard deviation of their times is ? = 16

science
what property must a substance have if you want to use the substance to make an aqueous solution

Science
Waht animals are in the Nile Delta? I already have crocodile & hippo. I need 1 more mammal, a type of fish, and an insect.

math
During the playoffs you score 2 goals per game. By the end of the second playoff game you had 22 goals for the year. Find an equation that gives you the total number of goals scored for the year in terms of the number of playoff games. How many goals did

Chemistry
Given the information below, calculate the heat provided by combustion of 66.1g of propane (C3H8). ΔHf° (C3H8(g)) = 103.85 kJ ΔHf° (CO2(g)) = 393.5 kJ ΔHf° (H2O(ℓ)) = 285.8 kJ Can Someone explain this in detail? i have to answer this type of

accounting
Analyze and record, in the form of T Accounts, Mr. James' transactions: Jan 1: Amount invested in the business $10,000 Jan 7: Bought equipment for $500 Jan 9: Bought office furniture with $2,000 cash Jan 10: Bought materials with $2,000 cash Jan 17: Sold

Math
91mm= 9.1cm? .012 L=12ml? 2.5g=2500mg? 21 L=2100ml? 0.821 L=821ml?

chemistry
How many grams of K2HPO4 are there in a teaspoon? Tablespoon? How do I figure this out?

math
In scientific notation, a number is written as the product of a coefficient and the number 10 raised to a power. True False

algebra 2
factor the expression 2x^2+5x+3 I just don't understand and my teacher is not a good one

science
The density of a substance with a mass of 90g is 2 g/cm cubed. What is the volume?

Math Algr.2
Convert to standard form (AX+BY=C) 1.y=3/2x+6 2. 2/3y=2x5 3.7y21=1/2x 4.2/3x+3/4y=1 Convert to Slope/intercept form (y=mx+b) 1.3x27=14 2.9y6x18=0 3.82x+4y=0 12x=4y8 I need help going through this because I am not sure if I am doing everything

economics
3.Determine if the demand for the following products is price elastic or price inelastic, and explain your answer. In your explanation, be sure to include how the necessity of a good and the availability of substitutes affect the price elasticity of demand

Physics PLEASE HELP
A painter climbs a ladder leaning against a smooth wall. At a certain height, the ladder is on the verge of slipping. Let the mass of the painter be 69.0 kg, length = 2.80 m, the ladder’s mass to be 21.0 kg, θ = 57.0°, and the coefficient of friction

math
what is a word phrase of n + 16

arrays and expanded algorithm
31x19=

math
Write each ratio as a fraction in simplest form. 1. 3 sailboats to 6 fan boats

Math
Stephanie got a travel pack of 4 aspirin each 500 ml. How many total grams are in the pack 0.5? A box of specialty baking flour holds 2 kg. How many angel food cakes can be made with a recipe that calls for 100 grams of flour? 0.1? Joey walks 4 kilometers

college math
loverdaleNurseries obtained a $60,000 loan at 7.5% compounded monthly to build an additional greenhouse. Construct a partial amortization schedule for payments of $1000 per month (except for a smaller final payment)showing details of the first 2 payments.

math
Mr. Simmons patio has an area of 90 sqare feet and a perimeter of 38 what are the dimensions of his patio?

help one question
5. Scientists used _______ data to generate a model of the moon’s interior. (1 point)crater moonquakes phase eclipse

Chem:DrBob
Dr.Bob, yesterday you told me : "The best way I think is to show examples. 12Mg = 1s2 2s2 2p6 3s2 Here the 1s orbital is lower than the 2s and they are lower than the 3s etc." 19K = 1s2 2s2 2p6 3s2 3p6 3d0 4s2 Here the 1s is lower than the 2s and those are

math
If sandy and Betty have 192 toys in all and Sandygive Betty 50 toys so know sandy has three times as much as betty

math
build 3 different rectangular prisms with volume 12 cubic centimetres. describe each prism.

Math
I am less than 100. The sum of my digits is 8. If you divide me dy 2,Iam an even number. My tens digit and my ones digit are the same

English
Subject: Buying a House Is "Steps in Buying A House" a good thesis.

7th grade math
Are the ratios 4/6 and 14/21 equivalent or not equivalent? Why?

chemistry
How many moles of are needed to react with 0.460 ?

Algebra
Sunny received 90 on his math test. If he got x number of 3 point problems and y number of 5 point problems correct, write an equation for y in terms of x. Also write an equation for x in terms of y

math
I am a number between 75 and 150. My tens digit is three times my ones digit. The sum of my digits is 5. My hundreds digit and my ones digit are the same.

math
how many different rectangular prisms with a volume of 11cubic centimetre can you build with centimetre cubes? explain.

Math
How many dollars are in 18 fivedollars bills?

Algebra
I just need some help finding the equations to this problem and i will know how to do the rest. Kenisha sells athletic shoes parttime at a department store. She can earn either $500 per month plus a 4% commission on her total sales, or $400 per month plus

math
help me! 2 3/5 + 1 4/5=

arithmetic
Amanda is making xookies for a charity event. She expects 10 people to come. She wants to have 3 cookies for each person. How can Amanda use a patter to find the product for 6 x 10?

physics
topfuel drag racers are able to uniformly accelerate at 12.9 m/s from rest 97 m/s before crossing the finish line . How much time elapses during the run ?

Physics B
Objects with masses of 105 kg and 528 kg are separated by 0.482 m. A 41.1 kg mass is placed midway between them. 0.482 m b b 105 kg 41.1 kg 528 kg Find the magnitude of the net gravitational force exerted by the two larger masses on the 41.1 kg mass. The

physics
a race car accelerates from rest at +7.2 m/s^2 for 4.5 s. How fast will it be going at the of that time ??

Physics
To move a box you pull on the handle as indicated in the diagram shown below with a constant force F. The mass of the box is m = 8 kg and the angle è = 22°. What is the magnitude of the normal force?

Math
Stephanie got a travel pack of 4 aspirin, each 500 milligrams. How many total grams are in the pack its not 0.5?

english
he writers transformation of questioning of whether or not there truly is a God to the personal conclusion made through surrounding wondrous works that there is indeed a God. The purpose for writing this piece is to express and entertain. This can be first

math
4 3/4 +3 1/2

math
whole number for 30.089

CHEM EQB
How many ml of 0.2M NaH2PO4 should b added to 40 mL of 0.1M Na3PO4 to make the buffer pH 7.2. Ka1:1.1 x 10^2 Ka2:7.5 x 10^8 Ka3:4.8 x 10^13