Tuesday
June 28, 2016

Posts by harry

Total # Posts: 314

Chemistry
N2(g) + O2(g) → N2O5(g) What volume of oxygen gas reacts to yield 750.0 cm3 of N2O5? The reaction conditions are 350°C and 2.50 atm pressure. I balanced the equation 2N2+2O2 = 2N2O5 BUT I AM NOT GETTING THE CORRECT ANSWER, WHAT AM I DOING WRONG?
February 2, 2014

Chemistry
N2(g) + O2(g) → N2O5(g) What volume of oxygen gas reacts to yield 750.0 cm3 of N2O5? The reaction conditions are 350°C and 2.50 atm pressure. I balanced the equation 2N2+2O2 = 2N2O5 BUT I AM NOT GETTING THE CORRECT ANSWER, WHAT AM I DOING WRONG?
February 2, 2014

Chemistry
N2(g) + O2(g) → N2O5(g) What volume of oxygen gas reacts to yield 750.0 cm3 of N2O5? The reaction conditions are 350°C and 2.50 atm pressure
February 2, 2014

Chemistry
SO2(g) + O2(g) → SO3(g) What volume of sulfur dioxide gas reacts with 15.0 L of O2? The reaction conditions are 875°C and 1.00 atm pressure
February 2, 2014

algebra
The perimeter of a pool is 64 feet and has a width of x and a length of x-4. What is both the width and length of the pool?
January 24, 2014

math
19 cars start a race. in how many ways can the top 3 cars finish
December 14, 2013

physics
A small coin is inside a bowl. The bowl is a surface of revolution of the curve y=100x^4 m^-3. This coin slides around the inside of the bowl at a constant height of y=0.01 m above the bottom of the bowl. What is its angular velocity in rad/s? Accel due to gravity = 9.8 m/s^2
June 24, 2013

S.S. help plz
these are the answers i got 100% 1-2 2-1 3-4 4-2 5-1 6-4 7-3 8-3 9-1 10-1
May 28, 2013

please hurry
what is the square root of 0.31428 with explanation.by divison method.
May 20, 2013

Calculus
Find the derivative
May 1, 2013

Calculus
f(x)= e−(5x)⋅cos(3x)
May 1, 2013

calculus
find the solution: (y^(2) dx)/(1-x)=dy
April 11, 2013

calculus
find the solution: e^y=1/(y^'+1)
April 11, 2013

calculus
Find the specified coordinates of the centroid of the area bounded by a) x=3 and 2x=y^2 find the coordinates x and y of the centroid b) y= x^3 and y=4x in the first quadrant. Find the x coordinate of the centroid
April 11, 2013

calculus
Find the coordinates of the centroid of the following volume of revolution formed by rotating the area bounded by y^2-4=-x^2, x=0,x=1, And the "x" axis about the "x" axis.
April 11, 2013

calculus
Find the particular solution of the following differential equation by using the given boundary conditions. y(1+x)=x(y+1)(dy/dx) when y=1 x=1
April 11, 2013

calculus
Find the centroid of 4 particles of equal mass located at (0,0), (4,2), (3,-5), and (-2,-3)
April 11, 2013

Math
please help!!!!Apply newtons method to approximate the x-values of the indicated points of intersection of the 2 graphs. continue the process until 2 successive approximations differ by less than 0.001. (Hint: Let h(x)=f(x)-g(x)) f(x)=x^6 g(x)=cos(x) 1)x= ??? (smaller value) 2...
April 5, 2013

Chemistry
PV=nRT 14.9L*2.6atm=n*0.08206*(25+273.15) n=1.583mol PV=nRT P*29.3L=1.583mol*(15+273.15)*0.08206 P=1.2778atm
March 25, 2013

chemistry
enthalpy change^H is +23kJ mol-1 of phosphine (PH3) for the reaction 2P(s)red+3H2(g)---->2PH3(g) a) Calc. entropy change for this reaction. Explain how this information allows you to determine the spontaneity or non-spontaneity of this reaction at any temp (S for PH3 is ...
February 12, 2013

chemistry
a gas sample heated in a cylinder uses 650kJ of heat. a piston that compresses this gas does 800kJ of work. What is the change in internal energy, ^E of the gas during this process?
February 12, 2013

chemistry
list the following substances in order of increasing molar entropy at 25'c. H2O(l), H2O(g), H2O(s), C(s), Ar (g) Explain your reasoning
February 12, 2013

chemistry
the standard free energies of formation of SO2(g) and SO3(g) are -300.4 and -370.4kJ mol-1 respectively. Calculate the value of the equilibrium constant at 25'C for the reaction 2SO2(g)+O2(g)==>2SO3(g)
February 12, 2013

writing
I need help to write a summery for the open univercity please write for me one Thanks
February 7, 2013

math
25
January 27, 2013

astronomy
12km
January 16, 2013

science
Which is the higher density of polyethylene, linear or branched? Select the choice with the best accompanying explanation
January 12, 2013

science
A pressure vessel contains a large volume of CO2 gas at 10 atm pressure. A membrane composed of a poly(ether ketone) polymer with thickness 100 microns and net effective area of 100 cm2 covers a small perforated port in the container. The solubility of CO2 at 10 atm is 6.97 x ...
January 12, 2013

science
What is the degree of polymerization, n, of polypropylene with a molecular weight of 600,000 g/mole?
January 12, 2013

science
Calculate the surface energy of the (100) surface of niobium. The enthalpy of atomization of niobium is 745 kJ/mole. Express your answer in units of J/cm2.
January 12, 2013

science
What is the pH of 50 mL of a 0.2M glycolic acid aqueous solution after adding 5 mL of 0.25 M KOH? The pKa of glycolic acis is 3.83 at 25 .
January 12, 2013

science
Estimate the Cl-As-F bond angle
January 12, 2013

TO: MS SUE MATH 9
ok :)
December 13, 2012

TO: MS SUE MATH 9
thank you for trying and hopefully its right :)
December 13, 2012

TO: MS SUE MATH 9
The cube of the sum of 5 an 2 is decreased by the square of the product of 6 and 4. Write an expression that models this statement. Then , solve. THANX
December 13, 2012

Math 9 pleese help me thanx
The cube of the sum of 5 an 2 is decreased by the square of the product of 6 and 4. Write an expression that models this statement. Then , solve.
December 13, 2012

Physics
A force of 40 N is required to start a 5 kg box moving across a horizontal concrete floor. (a) What is the coefficient of static friction between the box and the floor? (b) If the 40 N force continues, the box accelerates at 0.70 m/s2. What is the coefficient of kinetic friction?
December 4, 2012

AP chemistry
Liquid butane, C4H10, is stored in cylinders, to be used as a fuel. The normal boiling point of butane is listed as -0.5 C. (a) suppose the tank is standing in the sun and reaches a temperature of 35 C. Would you expect the pressure in the tank to be greater or less than ...
October 28, 2012

ap chemistry help!!!!
Ive been absent from class because of the flu so i don't have a clue how to figure these out! Help! due tomorrow at 12! 1).Suppose that 135 g of ethanol at 23◦C is mixed with 255 g of ethanol at 75◦C at constant atmospheric pressure in a thermally insulated ...
October 24, 2012

Math
Which coins would you use to make $0.28? Write two ways
October 1, 2012

Math
Write the number that is 2 tens more than 53.
October 1, 2012

physics
200 gram cube is moved by a 100 gram water filled Styrofoam cup
September 20, 2012

Math
A pet store has 15 rabbits and 25 cats. How many more cats than rabbits does the store have?
September 19, 2012

Math
Write a4-digit number that has a hundrens digit of 6, a tens digit of 3, and 9 for each of the other digits.
September 19, 2012

college calc
Give a formula for the function illustrated using a vertical shift of an exponential function. The two points marked on the graph are A=(−1,17) and B=(1,2). The red horizontal line is given by y=1, and is a horizontal asymptote of the function. What is the equation?
September 6, 2012

math
y = x2 + 6x
July 26, 2012

math HELP HELP HELP
Hi, I am 12 years experienced tutor and assignment helper for computer science. I am ready to get this assignment done for you but you have to pay fee for it.For further discussion email me at hardeepsp ( at the rate) gmail (dot)com or contact me in skype or gtalk. my skype is...
April 30, 2012

Programming logic
Hi, I am 12 years experienced tutor and assignment helper for computer science. I am ready to get this assignment done for you but you have to pay fee for it.For further discussion email me at hardeepsp ( at the rate) gmail (dot)com or contact me in skype or gtalk. my skype is...
April 30, 2012

python programming
Hi, I am 12 years experienced tutor and assignment helper for computer science. I am ready to get this assignment done for you but you have to pay fee for it.For further discussion email me at hardeepsp ( at the rate) gmail (dot)com or contact me in skype or gtalk. my skype is...
April 29, 2012

programming
Hi, I am 12 years experienced tutor and assignment helper for computer science. I am ready to get this assignment done for you but you have to pay fee for it.For further discussion email me at hardeepsp ( at the rate) gmail (dot)com or contact me in skype or gtalk. my skype is...
April 25, 2012

Math
Find the value of csc Q for angle Q in standard position if the point at (3, –1) lies on its terminal side.
April 10, 2012

c++programming
Hi, I am 12 years experienced tutor and assignment helper for computer science. I am ready to get this assignment done for you but you have to pay fee for it.For further discussion email me at hardeepsp ( at the rate) gmail (dot)com or contact me in skype or gtalk. my skype is...
April 10, 2012

Chemistry
One enzyme- catalyzed reaction in a biochemical cycle has an equilibrium constant (K1) that is 10 times the equilibrium constant (K2) of a second reaction. If the standard Gibbs energy of the former reaction is - 300 kJ mol-1, what is the standard reaction Gibbs energy of the ...
April 10, 2012

phys chem
Calculate the Coulomb potential due to the nuclei at a point in a LiH molecule located 200 pm from the Li nucleus and 150 pm from the H nucleus. just doing exam review and got stuck on just this one, be great if I could get an answer.
April 9, 2012

Science
they could set up a bunjee jump and charge ten bucks for it
April 9, 2012

math
51 one data points with an average of 3.04 meaning you could assume every data point is 3.04. Multiply that by the 51 entries, add 16 to that number then divide by 52
April 9, 2012

Simple Interest
compound or simple intrest? earn 74000 or get account from 45000 to 74000?
April 9, 2012

math
5x2=10 7x2=14 +1 =25?
April 9, 2012

math
ya obviously you could save 82 bucks if you won
April 9, 2012

Chemistry
Uranium-238 has half life of 4.51 * 10^9 years Uranium-234 has half life of 2.48 * 10^5 years Thorium-230 has half life of 8.0 * 10^4 years Radium-226 has half life of 1.62 * 10^3 years Lead-210 has half life of 20.4 years. The rate constant for the decay of unstable nuclide X...
March 20, 2012

Chemistry
What volume will be required to contain a mixture of 0.547 mol of N2 and 0.547 mol of O2 at 1.11 atm and 22.1 degrees celsius?
March 20, 2012

Math
An alien rocketship is traveling at a speed of 2,500,000 feet per minute. At this speed, how many miles will it travel in 1 second? Round to the nearest thousandth.
February 20, 2012

Math
Transform: log3^4= log(3/4)=
February 20, 2012

physics
A 690 kg elevator starts from rest. It moves upward for 2.56 s with constant acceleration until it reaches its cruising speed, 1.84 m/s. What is the average power of the elevator motor during this period? What is the power of the elevator motor during an upward cruise with ...
February 20, 2012

physics
A 67.7 kg person jumps from rest off a 3.11 m-high tower straight down into the water. Neglect air resistance during the descent. She comes to rest 1.04 m under the surface of the water. Determine the magnitude of the average force that the water exerts on the diver. This ...
February 19, 2012

physics
A basketball player makes a jump shot. The 0.585 kg ball is released at a height of 2.14 m above the floor with a speed of 7.15 m/s. The ball goes through the net 3.10 m above the floor at a speed of 4.19 m/s. What is the work done on the ball by air resistance, a ...
February 19, 2012

MATH
does 2+2-2+2-2+2-2-2+2=2 ??
February 15, 2012

is this correct?- math
thank you very much!
February 12, 2012

is this correct?- math
find the domain of the real valued function; f(x) = sqrt(5 - (sqrtx)) my solution: 5 - (sqrt x) >=0 -(sqrt x) >= -5 (sqrt x) <= 5 x <= 25 (-infinity, 25] is this correct?
February 12, 2012

math
1.) The first person who requires your assistance is Tina the bearded lady. Tina’s side job is to look after the elephants (she double majored at circus university.) a. Tina must fill the semi-circular trough shown above with peanuts. Tina knows that the store bought ...
February 11, 2012

Analytic geometry
Write in general form, the equation of the straight line that passes through the points A(-6, -1) and B(2,2)
February 10, 2012

International Finance
Suppose that the current Bid-Offer on the Yen is $0.0089/¥ and $0.0091/¥, and the three-month forward is $0.0094/¥. 1. If you wish to hedge 10,000,000 Yen Obligation due in three months, what position would you take? Explain why. a. Buy Yen forward at $0.0089/¥...
February 7, 2012

Phi103
Reporter: A new campaign finance reform bill being considered by Congress would limit the amount of campaign contributions that political candidates can receive. However, a survey of candidates running for mayor, governor, and senate seats shows that not one of them favors the...
February 4, 2012

english
How does Aenea's detachment differ from Rama's in the Ramayana?
December 14, 2011

English
can you help pleasE?
December 14, 2011

English
Sorry! We are working in a group..
December 14, 2011

English
How does the Ramayana portray or illustrate precepts from the Bhagavad Gita?
December 14, 2011

physiology
if the isotonic solution in our body reduces like near to negligible then what would be the effect will it make on hematocrit concentration will it also become low and why?? please answer fast
November 30, 2011

Math/ Number sense
9+1+3=13. 7+1+5=13
November 29, 2011

Math/ Number sense
Use the numbers shown. Make the sum of the numbers across equal the sum of the number down. 7 5 1 9 3
November 29, 2011

Math
Thanks, MS. SUE
November 22, 2011

Math
Kindly pls. It's is the right answer is 30 . Thanks
November 22, 2011

Math
30
November 22, 2011

Math
Reasonableness. Use the clues to solve the. Riddle. I am between 24and34. You say my name when you count by twos from zero. You say my name when you count by fives from zero. What number am I? 20 21 22 23 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
November 22, 2011

calculus
calculate dy/dx when y=xy3+y=3x.
November 17, 2011

Reasonableness
Thanks, ms sue
November 2, 2011

Reasonableness
Sorry, it's red flag 25.
November 2, 2011

Reasonableness
Blue flag is 14--- Yellow flag 32
November 2, 2011

Reasonableness
Yes, even is like counting by 2. Odd is 1 3 5 7 9
November 2, 2011

Reasonableness
The flag that Nico waves has an odd number in the ones place and an even number in the tens place. RED flag 25- blue flag 14- yellow flag-32-green flag 6--oranges flag--17
November 2, 2011

Math
Chart 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90
November 2, 2011

Math
The secret number has a 7 in the ones place, The tens number is an odd number
November 2, 2011

Science
Now I'm confused!! HELPPPPP
October 25, 2011

science
Destiny is using a nutrient solution to use in her garden.She places the powder in a watering can.Then she adds the water.Which would dissolve the powder the fastest? A.SHAKING THE CAN VIGOROUSLY B.STIRRING THE SOLUTION SLOWLY C.TILTING THE CAN CAREFULLY FROM SIDE TO SIDE D....
October 25, 2011

math
one box holds 16 crayons. ANOTHER BOX HOLDS 24 CRAYONS. wRITE A SENTENCES USING WOLDS THAT COMPARES THE CRAYONS IN THE TWO BOXES.
October 24, 2011

physics
Not at all, my dad was involved in the accident. And no one was hurt, insurance info was exchanged and parties went home uncited. I'm just fascinated by the forces involved and very curious as to the physics causing the spinning effect . My dad says the Mercedes weighs as ...
October 7, 2011

physics
It appears to be at a 45° angle , minivan is hit on rear right wheel and top of the line Mercedes Benz front airbags deploy.
October 7, 2011

physics
How fast must a 3000 lb car be traveling to hit a 4000 lb minivan on the side rear to spin it 180°
October 7, 2011

math
a single card is drawn from a deck. find the probability of selecting a 10 or a diamond.
August 20, 2011

Reading
People can learn lots of things from kids that are dying. The kids can show you sight, hearing, smell, taste, or touch to their death. They would show you all wisdoms in the world, and can teach you all about life if you can listen to them. For example in this story Alain ...
June 24, 2011

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