# Determine the length and breadth of a rectangle if the length is 3cm less than twice the breadth, and the perimeter is 18

40,002 questions, page 328-
## Math

I have to make a true statement with this question: {All states west of the Rocky Mountains} {All states west of the Atlantic Ocean} I have to determine if the two statements are: Proper Subset is a subset of is not a subset of proper subset and is a

*asked by Arthur on August 20, 2010* -
## Precal

Suppose that Tiger hit a golf ball with an initial velocity of 150 ft/sec at an angle of elevation of 30°. Write the parametric equations to represent the flight of the ball. How long is the golf ball in the air? Determine the distance the ball traveled.

*asked by jessica on May 26, 2014* -
## Physics

A solar still is used to make fresh water from salt water by evaporation. Assume that during a summer day that 1000 BTU/ft sq of solar energy falls on the surface of the salt water. Determine how many inches of water are evaporated in 30 days. Assume that

*asked by Aaron on September 19, 2010* -
## Physics

A solar still is used to make fresh water from salt water by evaporation. Assume that during a summer day that 1000 BTU/ft sq of solar energy falls on the surface of the salt water. Determine how many inches of water are evaporated in 30 days. Assume that

*asked by Steve on September 9, 2015* -
## Chemistry

So, I go to high school in Texas and we have this AP Chem lab due online tomorrow night by midnight and I need some serious help on these questions: Lab Temp 0.2°C Experiment Trial Time in seconds Trial 1 Trial 2 Average Time 1 1 2 256 275 268 2

*asked by Jordan on March 16, 2013* -
## Chemistry - URGENT

So, I go to high school in Texas and we have this AP Chem lab due online tomorrow night by midnight and I need some serious help on these questions: Lab Temp 0.2°C Experiment Trial Time in seconds Trial 1 Trial 2 Average Time 1 1 2 256 275

*asked by Jordan on March 16, 2013* -
## Chemistry - reaction kinetics

So, I go to high school in Texas and we have this AP Chem lab due online tomorrow night by midnight and I need some serious help on these questions: Lab Temp 0.2°C Experiment Trial Time in seconds Trial 1 Trial 2 Average Time 1 1 2 256 275

*asked by Jordan on March 16, 2013* -
## Physics

A rigid tank contains 1.80 moles of an ideal gas. Determine the number of moles of gas that must be withdrawn from the tank to lower the pressure of the gas from 27.9 atm to 4.80 atm. Assume the volume of the tank and the temperature of the gas remain

*asked by idwsh on November 5, 2010* -
## Algebra: Quadratic Functions

A model rocket is launched with an initial velocity of 128 ft/s from a height of 70 ft. The height of the rocket, in feet, t seconds after it has been launched is given by the function s(t)=−16t^2+128t+70. Determine the time which the rocket reaches its

*asked by Isiah on March 18, 2014* -
## Algebra

The table below represents a linear function f(x) and the equation represents a function g(x): x f(x) −1 −5 0 −1 1 3 g(x) g(x) = 2x − 7 Part A: Write a sentence to compare the slope of the two functions and show the steps you used to determine the

*asked by Anonymous on July 17, 2017* -
## Chemistry

Determine the molar solubility of Y for XY2 if Ksp is 2.2x10^-4. The 2 in Xy2 is a subscript. I found the Ksp equation which is ksp=[x^2+][Y^-]^2 Then I did the ICE table and got x and 2x for the equilibrium concentrations. Then I did: 2.2x10^-4=(x)(2x)^2

*asked by Sara on May 12, 2015* -
## Math - D.E.Q.

The half-life of a radioactive isotope is the amount of time it takes for a quantity of radioactive material to decay to one-half of its original amount. i) The half-life of Carbon 14 (C-14) is 5230 years. Determine the decay-rate parameter for C − 14.

*asked by Justin on January 18, 2011* -
## friction

Our 10kg mystery box rests on a horizontal floor. The coefficient of static friction is 0.4 and the coefficient of kinetic friction is 0.3. Determine the force of friction acting on the box if a horizontal external applied force is exerted on it of

*asked by WyeCee on October 24, 2017* -
## Statistics

I need help with (b): A small company with 5 employees wants to know some statistics about their employee's ages. They surveyed the 5 employees and found that their ages were: 22, 29, 35, 37 and 42. (a)Determine: Mean age: 33 Median: 35 Range: 20 Variance:

*asked by Donna on February 11, 2012* -
## science

Our 10kg mystery box rests on a horizontal floor. The coefficient of static friction is 0.4 and the coefficient of kinetic friction is 0.3. Determine the force of friction acting on the box if a horizontal external applied force is exerted on it of

*asked by mustafa on October 26, 2015* -
## physics

A rigid tank contains 1.80 moles of an ideal gas. Determine the number of moles of gas that must be withdrawn from the tank to lower the pressure of the gas from 21.6 atm to 5.80 atm. Assume the volume of the tank and the temperature of the gas remain

*asked by Meagan on December 13, 2014* -
## maths

The annual demand for a product is 800 units and unit price of the product is #0.02%. if the ordering cost is # and the holding cost is 10% of the unit price; determine the (i):EOQ in the units. (i) total variable cost (ii) number of orders per annum

*asked by carman on May 2, 2019* -
## PHYSICS(URGENT)

A body of mass 0.5 kg is thrown vertically upwards with a speed of 10 m/s. Determine: a.The initial kinetic energy of the body b.The gain in potential energy when the body has reached its maximum height c.The maximum height reached above the starting

*asked by LK on March 22, 2012* -
## Macro Consumption Question

(Simple Spending Multiplier) For each of the following values for the MPC (marginal propensity to consume), determine the size of the simple spending multiplier and the total change in real GDP demanded following a $10 billion decrease in spending: a. MPC

*asked by Kay on April 16, 2013* -
## Physics 2

The average intensity of light emerging from a polarizing sheet is 0.807 W/m2, and the average intensity of the horizontally polarized light incident on the sheet is 0.972 W/m2. Determine the angle that the transmission axis of the polarizing sheet makes

*asked by Anne on April 5, 2012* -
## Algebra

The set S= {AAA,AA,C,D} represents the sizes of batteries a hardware store offers. The set T= {regular, alkaline, rechargeable} represents the possible types of the batteries. Find the cross product S x T to determine how many different batteries are being

*asked by Mary on September 12, 2013* -
## Engineering/Chemistry

Milk is flowing through a heat exchanger at a rate of 2000kg/h. he heat exchanger supplies 111,600kJ/h. The outlet temperature of the product is 95C. Determine the inlet temperature of the milk. The product specific heat is 3.9kJ/(kg*C)

*asked by Janice on January 31, 2012* -
## Math,correction

direction state : solve each system by addition. if a unique solution does not exist, state whether the system is consistent or dependent. NOw the problem looks like this: 2x+3y=1 5x+3y=16 the answer that I got was this: for variable x = 5 y = -3 which is

*asked by jasmine20 on February 7, 2007* -
## Physics

During take-off the angular velocity of the blades of a revving engine of engine of an air craft change from 350rev/min to 570rev/min in a time interval of 15minutes. Determine (1).uniform angular acceleration in rad/sec (2).angular displacement during the

*asked by Bill on May 29, 2018* -
## physics

A particle is acted upon a body by the following forces: 55N Towards East,45N inclined at(E 80 Degrees Towards North East),50N Towards North East, 60N inclined at (E 20 Degrees towards South of West),40N Towards South. Determine the magnitude and direction

*asked by justine on October 2, 2018* -
## Physics

A cylinder contains the helium gas with a volume of 0.1 m3 at a pressure of 220 kPa. The gas is compressed to a volume of 0.02 m3. The process is adiabatic and the specific heat ratio of the gas is 1.66. Determine (a) the pressure in the cylinder after

*asked by Dia on December 18, 2011* -
## Physics

Two oppositely charged spheres, with a centre to centre separation of 4.0 cm, attract each other with a force of magnitude 1.2x10^-9N. The magnitude of the charge on one sphere is twice the magnitude the charge on the other. Determine the magnitude of the

*asked by Lucy on April 14, 2009* -
## Science

In a expiriment to determine whether moment is conserved. You shoot a dart into a cart. You know both the mass of the dart and the distance between them. You also know the distance after the dart and cart joined together. The speed can be calculated both

*asked by Spaz on May 2, 2016* -
## Chemistry

You want to determine the heat of reaction when a sodium chloride solution is formed using a 10.0 g sample of NaCl(s) and 50.0 mL of water in a coffee cup calorimeter. Which of the following equations would you use? Assume the specific heat of the solution

*asked by Morgan on February 18, 2015* -
## thermodynamic

1.5kg water in a closed system initiallu have a pressure of 700 kPa and x=0.7.Then,water had been expanding at constant temperature process until the pressure decrease to 150kpa.During the process,1000kJ heat was transferred to the system.Determine the

*asked by SYAZWANI URGENT on November 1, 2012* -
## physics

a helium atom is in one of its single states.one of the electrons is in an p-state and the other a D-sate.the atom is placed in a magnetic field,B,of strengh 3 tesla. sketch a diagram showing the degenerated states and all permissible transition from

*asked by thomas on April 27, 2016* -
## chemistry

Terephthalic acid is an important chemical used in the manufacture of polyesters and plasticizers. It contains only C, H, and O. Combustion of 21.79 mg terephthalic acid produces 46.18 mg CO2 and 7.10 mg H2O. If 0.250 mol of terephthalic acid has a mass of

*asked by maath on October 8, 2018* -
## statistics

Water sample from 6 public swimming pools are combined for one test regarding bacteria level.Further testing is done if the combined test fails. Past results have shown that there is a 2% chance of unacceptably high bacteria level. Determine the

*asked by alba on June 27, 2010* -
## physics133

1 The principle of conservation of heat energy states that that when an object is at constant temperature or is in thermal equilibrium, it is losing and gaining heat at equal rates. the heat lost by a hot body is equal to the heat gained by the cold body

*asked by Cali franco on April 25, 2015* -
## Physics 114

an object is dropped from a height of 7.00 meters and takes 1.19 seconds to fall to the ground. What is the acceleration due to gravity estimated from this measurement? Suppose the experiment above is done five times. Determine the mean fall time and the

*asked by Elizabeth on September 30, 2015* -
## Physics

A 64.7 kg astronaut is on a space walk away from the shuttle when her tether line breaks. She is able to throw her 14.1 kg oxygen tank away from the shuttle with a speed of 7.45m/s to propel herself back to the shuttle. Assuming that she starts from rest

*asked by Ted on February 26, 2013* -
## CHEMISTRY

I've been trying to do this problem but I would get confused and stuck.. Consider a sample of a hydrocarbon at 0.959 atm and 298 K. Upon combustion the entire sample in oxygen, you collect a mixture of gaseous carbon dioxide and water vapor at 1.51 atm and

*asked by J on November 7, 2008* -
## Please help Math

Determine the correct formula for the measures of all angles coterminal with the angle: 140° a. 140° + (360° + n) b. 140° + n(360°) c. 360° + n(180°) d. 360° + (180° + n)

*asked by Holly on May 21, 2013* -
## Science

A cellulose solution contains 5% cellulose by weight in water. It is to be diluted to 4.0 % using a 1% solution of cellulose in water. Determine the kilograms of 1% solution required to dilute 100 kg of the 5% solution.

*asked by Man Singh Chouhan on March 26, 2015* -
## process chemical

A cellulose solution contains 5% cellulose by weight in water. It is to be diluted to 4.0 % using a 1% solution of cellulose in water. Determine the kilograms of 1% solution required to dilute 100 kg of the 5% solution.

*asked by paru on September 13, 2017* -
## Physics

A bullet of mass 6.45 g is fired from a 66.0 cm-long rifle barrel at 237 m/s. The mass of the rifle is 4.50 kg. Determine the acceleration of the bullet as well as the recoil acceleration of the rifle.

*asked by Rose on July 9, 2017* -
## math

Determine whether this function has a mzximum or minimum value and then find that value: f(x)=2x^2 + 3x -9 The derivative, f'(x) = 4x +3, is zero when x = -3/4 . That means there is a relative extreme value (either maximum or minimum) there. The second

*asked by Beth on December 28, 2006* -
## Chemistry 22

Determine if the reaction produces a precipitate. For a precipitate mark ‘a’ and if there is no precipitate mark ‘b’. 8. KOH(aq) + Fe(NO3)3(aq) 9. MgCl2(aq) + Na(NO3)2(aq) 10. NaBr(aq) + Ag(NO3) (aq) 11. Na3PO4(aq) + Ba(NO3) 2(aq)

*asked by Ivy on December 4, 2010* -
## Physics--diffraction

Suppose you have measured the diffraction pattern of a grating with d = 0.09 mm and have found that the spots were separated by s = 1 cm. Now you want to determine d for an unknown grating. With the unknown grating, the spots are separated by s = 3.1 cm.

*asked by bre on November 3, 2010* -
## Finance

1. Determine the intrinsic values of the following call options when the stock is selling at $32 just prior to expiration of the options. a. $25 call price b. $30 call price c. $35 call price

*asked by Suzymae on May 16, 2012* -
## Chemistry

Determine the number of moles of N2 that are required to produce 12 mol of NH3 using the equation, N2 + 3H2 --> 2NH3. 12 mol NH3 x 1 mol N2/2 mol NH3 = 6 moles of N2.

*asked by Beth on November 29, 2015* -
## physics

A +5.7C X 10 to the -6 power point charge is on the x-axis at x=-3.0m,and a +2.0C X 10 to the -6 power point charge is on the x-axis at x=+1.0m.Determine the net electric field (magnitude and direction) on the y-axis at y=+2.0m.

*asked by bob on March 30, 2012* -
## geometry

a parallelogram has the vertices (-1,2), (4,4), (2,-1), and (-3,-3). determine what type of parallelogram. find the perimeter and area. i found the parallelogram part and its a rhombus but i cant find the perimeter and area

*asked by damon on December 8, 2011* -
## vectors

The position vectors, r km, and the velocity vectors, v km/h, of two boats at a certain time are given by ... Boat A:at 10:00 am rA=6i+10j vA=8i–2j Boat B:at 10:30 am rB=8i+5j vB=4i+j ... determine the time at which boat B should head out so that the two

*asked by Molly on February 7, 2013* -
## Math

Amanda uses the equation y=kx to determine how much money she earns after working any number of hours (x). Amanda earned $350 after working 40 hours. What is the value of k in Amanda's equation?

*asked by Amy on March 6, 2017* -
## Algebra

Living in or near a metropolitan area has some advantages. Entertainment opportunities are almost endless in a major city. Events occur almost every night, from sporting events to the symphony. Tickets to these events are not available long and can often

*asked by Dez on June 24, 2010* -
## Chem! hELP

An experiment is preformed to determin the empirical formula of a copper iodide formed by direct combination of elements. A clean strip of copper metal is weighed accurately. Its is suspended in a test tube containing iodine vapor generated by heating

*asked by ALie on October 22, 2006* -
## physics

A vibrator attached and resting on the surface of water generates plane water waves and its propagation is found to take 50 seconds to reach a floating cork 65 cm away. If the cork subsequently vibrates with SHM of a period 3.8 seconds, determine the

*asked by Edwin on March 23, 2010* -
## Chemistry 101

Joe Smith, the chemical engineer from Acme Chemical Company, wanted to determine the final volume in a large glass cylinder is he dropped a 12.52 pound ingot of lead whose density was 11.3 g/cm^3 into the cylinder which already contained 2500. mL of water.

*asked by Lilly on February 9, 2016* -
## AP calculus AB

A spy tracks a rocket through a telescope to determine its velocity. The rocket is traveling vertically from a launching pad located 10 km away. At a certain moment, the spy's instruments show that the angle between the telescope and the ground is equal to

*asked by jennifer on December 29, 2010* -
## college math

Select Two Cards In a board game uses the deck of 20 cards shown. first roll has five birds 2 yellow, 3 red, second roll 5 lions same, third roll five frogs the same, fourth roll has five monkeys the same. Two cards are selected at random from this deck.

*asked by kim on January 17, 2012* -
## Chemistry

At a particular temp, K = 1.6 x 10^-5 for the reaction: 2SO3(g) 2SO2(g) + O2 (g) If 4 mol of SO2 and 2 mol of O2 are placed into a 2.0L flask, calculate the equilibrium concentrations of all species. I set up an ICE table with SO3 to start with 0M and SO2

*asked by Scott L. on May 23, 2010* -
## Physics

A conducting solid sphere (R = 0.24 m, q = 7.6x10^-6 C) is shown in the figure. Using Gauss's Law and two different Gaussian surfaces, determine the electric field (magnitude and direction) at point A, which is 0.000001 m outside the conducting sphere.

*asked by Geneva on October 2, 2015* -
## physics

Determine the final velocity of a medicine ball that is dropped from a height of 7.00 meters. (assume air resistance is negligible) I don't understand how to solve this with only change in x. I imagine I am supposed to assume initial velocity is 0 m/s,

*asked by Brooke on June 5, 2014* -
## physics

A bullet of mass m=10 g is fired with initial speed vi = 400 m/s into a block of mass M=2 kg initially at rest at the edge of a frictionless table of height h=1 m as shown in the figure. The bullet remains in the block, and after the impact the block lands

*asked by tami on January 14, 2013* -
## Physics

A hockey player's arm and stick form a 1.6 m rigid segment. If the angular speed of the player's arm/stick is 1.2 rad/s, determine the resultant velocity of a motionless puck that is hit struck on if: a) the hockey player is stationary during the swing b)

*asked by Tori on November 7, 2013* -
## Chemistry

Posted by Hannah on Saturday, April 18, 2009 at 3:05pm. Find the pH of a 0.010M solution of NH4ClO4 and the pH of a 0.010M solution of NH4C2H3O2. Responses * chemistry - Anonymous, Saturday, April 18, 2009 at 3:36pm after finding the ph of the

*asked by Anonymous on April 18, 2009* -
## calculus

16. Given the following information, determine the constant speed, travel time, and cost that represent the minimum one-way trip delivery cost. Fuel costs per hour are equal to V^2/600 V is the speed in miles per hour Driver (labor) costs are $10 per hour

*asked by James on May 8, 2013* -
## calculus

16. Given the following information, determine the constant speed, travel time, and cost that represent the minimum one-way trip delivery cost. Fuel costs per hour are equal to V^2/600 V is the speed in miles per hour Driver (labor) costs are $10 per hour

*asked by James on May 8, 2013* -
## algebra

if a vendor charges p dollars each for rugby shirts, then he expects to sell 2000-100p shirts at a tournament. a. Find a polynomial R(p) that represents the total revenue when the shirts are p dollars each b. Find r(5), R(10), and R(20) C. Use the bar

*asked by Anonymous on February 25, 2011* -
## Chemistry 101

Joe Smith, the chemical engineer from Acme Chemical Company, wanted to determine the final volume in a large glass cylinder is he dropped a 12.52 pound ingot of lead whose density was 11.3 g/cm^3 into the cylinder which already contained 2500. mL of water.

*asked by Lilly on January 18, 2016* -
## math

Can you tell me if I have the correct answer to this problem. A formula to determine the area of a person’s skin in square inches is s=15.7w^0.425 h^0.725 where w is weight in pounds and h is height in inches. Use S to estimate the area of a person’s

*asked by patiance on April 30, 2011* -
## physics

A projectile is fired with an initial speed of 65.2 m/s at an angle of 34.5 degree above the horizontal on a long flat firing range. Determine (a) The maximum height reached by the projectile, (b) The total time in the air, (c) The total horizontal

*asked by Anonymous on August 4, 2014* -
## Calculus

Would you be able to help me with a couple of questions? thanks in advanced! 1. I am given the graph f(x)=x^2-2x. I have to draw a line tangent to the point (0,0). Then, I have to estimate the slope at that point. how would I go about answering this

*asked by Sarah on April 10, 2014* -
## Math (polynomial functions)

Hi there, Can someone please help me understand the relationship between the FINITE DIFFERENCE and leading coefficient in a polynomial? I need to be able to determine the leading coefficient from a finite difference.

*asked by Rumer on May 10, 2008* -
## Chem

The equilibrium constant is given for one of the reactions below. Determine the value of the missing equilibrium constant. 2HBr(g) H2(g) + Br2(g) Kc=0.322 H2(g) + Br2(g) 2HBr(g) Kc= ?

*asked by Jodi on March 11, 2015* -
## maths

A boat goes 30 km upstream and 44 km downstream in 10 hours. In 13 hours it goes 40 km upstream and 55 km downstream. Determine the speed of the stream and that of boat in still water

*asked by manavi on July 24, 2015* -
## math

jared bought a package of pens containing 20 pens. If 3/4 of the pens had black ink, how do you determine the number of pens with black ink?

*asked by Anonymous on March 27, 2014* -
## Descrete maths

Show that the following conditional statement is a tautology without using truth tables.[ p ^ ( p ! q )] ! q 8. Without the use of truth tables, determine whether ( : p ^ ( p ! q )) !: q is a tautology. show all your work

*asked by Tefo sello on September 12, 2014* -
## Pre-Calculus

A.Verify the identity. B.Determine if the identity is true for the given value of x. Explain. [cot(x) – 1] / [cot(x) + 1] = [1 – tan(x)] / [1 + tan(x)], x = π/4 I solved A and I believe it's true; however, I need help with B.

*asked by Iris on October 5, 2016* -
## mathematics

6. In a GP the 3rd term is equal to four times the first term and the sixth term is equal to three times the fourth term plus 32. Determine the sequence.

*asked by patricia on May 3, 2016* -
## Math

Consider the squaring function: The output is the input times itself. For example, if the input is 3, the output is 9. Determine which of the following points are on the graph of the squaring function: (6,36), (4,8), (-2,4), (-3,-6), (5,25), (6,12),

*asked by Michelle on November 17, 2010* -
## Math

Use the distance formula to determine whether the points lie on the same line. (0,4),(7,-6),(-5,11). I know the distance formula, but I don't see how that will help me find out if they lie on the same line.

*asked by Christina on September 16, 2011* -
## Sequence

In a GP the 3rd term is equal to four times the first term and the sixth term is equal to three times the fourth term plus 32. determine the sequence.

*asked by KAdila on October 25, 2016* -
## math

Dara is trying to determine whether a figure is a polygon or not. Her teacher told her that figure is closed,but nothing about the shape of the figure. What else must Dara know to be sure if the figure is a polygon ?

*asked by stephanie on March 2, 2012* -
## Calculus theory

Determine if the statement is always true, sometimes true, or never true. If y is a function of x, and is also a function of t. then dy/dx = dy/dt explain. i think its sometimes true but i don't know why it is. am i right?, and can you please explain me y

*asked by AAron on March 1, 2012* -
## Business statistics

3. Determine the t-critical value for a two-sided confidence interval in each of the following situations. a. Confidence level = 95%, df = 15 b. Confidence level = 99%, n = 5. c. Confidence level = 95%, n = 15 d. Significance level = 0.01, df = 37

*asked by Lizzie on March 25, 2015* -
## physics

The initial velocity and acceleration of four moving objects at a given instant in time are given in the following table. Determine the final speed of each of the objects, assuming that the time elapsed since t = 0 s is 2.0 s. initial velocity accerlation

*asked by thaokieu on January 30, 2011* -
## Calc 1

Consider the position function s(t)=sin((pi)(t)) representing the position of an object moving along a line on the end of a spring. Sketch a graph of s with the secant line passing through (0,s(0)) and (0.5,s(0.5)). Determine the slope of the secant line

*asked by TayB on June 9, 2015* -
## physics

Determine the elongation of the rod in if it is under a tension of 5.7E10^3 N. The rod is made of aluminum and copper. From the aluminum to the copper section it measures 1.3m and from the copper section to the end it measures 2.6m with a radius of 0.2cm.

*asked by Elisa on July 21, 2008* -
## Physics

Two resistors have resistances R1 and R2. When the resistors are connected in series to a 12.4-V battery, the current from the battery is 2.13 A. When the resistors are connected in parallel to the battery, the total current from the battery is 9.01 A.

*asked by Abigail on May 11, 2015* -
## Math 8R - HW Qs. Check

Topic - Logic In the clues below, each variable represent a different digit ranging from 0-9. Determine what digit each variable represent g+g+g = d (3+3+3 = 9) j+e = j (2+0 = 2) g (to the 3rd power) = d (3, to the 2nd power = 9) b+9 = d (6+3 = 9) f-b = c

*asked by Laruen on September 9, 2012* -
## physics

A concave shaving mirror has a radius of curvature of 28.0 cm. For each of the following cases, find the magnification and determine whether the image formed is real or virtual and upright or inverted. (a) an upright pencil placed 41.6 cm from the mirror.

*asked by Brandon on March 12, 2013* -
## Physics

A massless rope passes over a massless, frictionless pulley. One end of the rope is connected to box 2, and the other end is connected to box 3. The weights of the three boxes are W1 = 50.7 N, W2 = 32.1 N, and W3 = 28.6 N. Determine the magnitude of the

*asked by StressedStudent on September 25, 2012* -
## chemistry

6. Determine Keq for the reaction: 2 SO2 (g) + O2(g) 2 SO3(g), given that 1.00 x 10-2 moles of SO2 and 2.00 x 10-2 moles of O2 were placed in a 2.00L reaction chamber. The chamber contained 7.5 x 10-3 moles of SO3 when equilibrium was established at 727oC.

*asked by Olivia on February 25, 2010* -
## math

Farmer Joe has a square piece of property surrounded by a fence. On 0.5 of the fenced property there is corn growing. On 0.6 of the remaining fenced area there are tomatoes planted. Which expression can be used to determine how much of the fenced area has

*asked by Anonymous on September 27, 2012* -
## physics

Children slide down a frictionless water slide that ends at a height of 1.80 m above the pool. If a child starts from rest at point A and lands in the water at point B, a horizontal distance L = 2.43 m from the base of the slide, determine the height h of

*asked by HELP!!! on November 30, 2012* -
## physics

A force of 200N is needed to push a 500N object up the inclined plane pictured below. Determine the force in, the force out, the distance in, the distance out, the work in, the work out, the mechanical advantage, the therotical mechanical advantage, and

*asked by Anonymous on April 12, 2012* -
## physics

Determine the elongation of the rod in if it is under a tension of 5.7E10^3 N. The rod is made of aluminum and copper. From the aluminum to the copper section it measures 1.3m and from the copper section to the end it measures 2.6m with a radius of 0.2cm.

*asked by Elisa on July 21, 2008* -
## math

compare two cell phone companies and determine which is the better deal. Needs to be in a y=mx+b equation for each company. company a $40 base rate plus every minute costs .05 company b base rate $30 plus every minute costs .07 based on 800 minutes PLEASE

*asked by dan on November 18, 2012* -
## MATH TRIG

FROM A DISTANCE OF 80 M. THE ANGLE OF ELEVATION OF THE TOP OF A FLAGPOLE IS 18 DEGREES. dETERMINE THE HEIGHT OF THE FLAGPOLE.(NEAREST TETH OF A M. mY CONFUSION IS ANGLE OF DEPRESSION AND ANGLE OF ELEVATION. mY TECHER CALLS FROM TOP ELEVATION WHILE i INSIST

*asked by JASON on May 13, 2009* -
## chabot college

Consider the position function s(t)=sin((pi)(t)) representing the position of an object moving along a line on the end of a spring. Sketch a graph of s with the secant line passing through (0,s(0)) and (0.5,s(0.5)). Determine the slope of the secant line

*asked by Rocky Allen on August 23, 2017* -
## Math

Using the Descartes Rule of Sign count the number of sign changes of f(-x) and determine the number of negative real zeros. 1. f(x)=x^3+x^2-10x-24 My answer: A few signs due change but not enough to say they changed." 0 sign changes of f(-x), which means

*asked by kim on October 24, 2014* -
## Chemistry

You want to determine the molar heat of solution of sodium chloride using a 10.0 g sample of NaCl(aq) and 50.0 mL of water in a coffee cup calorimeter. Which of the following equations would you use? Assume the specific heat of the solution is the same as

*asked by Neha on July 14, 2011* -
## Chemistry

A mixture containing CH3OH, HF, CH3F, and H2O, all at an initial partial pressure of 1.04 atm, is allowed to achieve equilibrium according to the equation below. At equilibrium, the partial pressure of H2O is observed to have increased by 0.43 atm.

*asked by Colin on March 9, 2011*

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