Thursday
July 24, 2014

Posts by Jessica


Total # Posts: 2,604

chemistry
A researcher put 10.0 moles of N2O into a 2-L container at some temperature where it decomposes according to the following: N2O = 2N2+ O2. At equilibrium 2.20 moles of N2O remain. Calculate the Kc for the reaction.

chemistry
A researcher put 10.0 moles of N2O into a 2-L container at some temperature where it decomposes according to the following: N2O = 2N2+ O2. At equilibrium 2.20 moles of N2O remain. Calculate the Kc for the reaction.

math
6 2/5

math
3 7/10 + 2 9/10

math
3 1/3 + 1 2/3

math
each morning Natalie jog 3 1/3 miles to the park. Then she takes a shortcut and jogs 1 2/3 miles back home. How many miles does Natalie jog each morning?

5th grade
7 5/12 - 5 7/12

Calculus AB
Analyze the function ln x=cx^2 to find the unique value of c such that there is exactly one solution to the equation. To do this find the value of c such that both sides of the equation have equivalent slopes at some point; this will give you a proper x-coordinate to work with.

APMEH
Thanks

APMEH
What does the book mean when they say..."the nobles pushed to reserve appointments to the officer corps of the armies, the bureaucracies,the government ministries, and the church exclusively for nobles"? This is during the 18th century

ALGEBRA/please help
I see my mistake. I was supposed to multiply 31 into 4. Thank you so much!

ALGEBRA/please help
I must simplify this expression. Am I correct? -4[-25-(9-3)]. I first subtract within the parentheses first -4[-25-(-6)] -4-(-31) = 27

French
En quoi se distingue l’anthropologie comme métier de l’anthropologie pratiquée comme une science ? What does this mean?

precalculus
how you do you use the power-reducing formula to find the exact value of the trig function: sin^2(37pi/12)

ALGEBRA/AM I CORRECT?
thank you so much!

ALGEBRA/AM I CORRECT?
OK, I will try this. Please let me know. 39x= -234; Divide by 39 on each side. x = 6. y=40+6(-6); 40+-36 = 4; (6,4)?

ALGEBRA/AM I CORRECT?
THANK YOU! Solve by substitution 3x+6y=6; -6x+y=40 My WORK: Y=40+6X; 3X+6(40+6X)=6; 3X+240+36X=6; x=-5.51; y=40+6(-5.51); y=40+-33.06; y=6.94 (-5.51,6.94) Is this right???

mATH
what is the decimal notation for 4/9

mATH
solve using multiplication principle. -2/7x=6/35

mATH
is it 42

mATH
42

mATH
A bucket has 28 liters of water in it is 2/3 full. How much can it hold?

MATH
30

MATH
5/6+1/5T=4/6

mATH
40

mATH
what are the LCM of 8 and 20

Business Math
$2.18 isnt a choice. Choices are: A) $1.66 B) $1.98 C) $2.23 D) $2.32

Business Math
what do u multiply 1.817*1.2?

Business Math
Every week, a grocery store buys 30 gallons of milk at a cost of $1.58 per gallon. The store owner anticipates a 15% spilage rate. To achieve a 20% markup based on cost, what should be the selling price per gallon? Round to nearest cent.

Business Math
Laurie expects to make $100,000 in 2007. Her social security tax rate is 6.20% up to the wage base, Medicare is 1.45%. How much FICA is Laurie expected to pay for the year?

MATHS
-12.27-0.9b=5.6(b+2.8) -12.27 - 0.9b = 4.6b + 15.68 15.68 - 12.27 = 4.6b + 0.9b 3.41 = 5.5b 3.41/5.5 = b ? = b

math
WHAT WAS THE ANSWER

math
what am i supposed to be doing?

math
solve the equation for b. -12.27-0.9b=5.6(b+2.8)

Physics
The length of a simple pendulum is 0.58 m, the pendulum bob has a mass of 285 g, and it is released at an angle of 16 degrees to the vertical. With what frequency does it oscillate?

Keyboarding and word processing
You should use your ring finger

Chem
Please tell me if these are right! What are the [H3O+] and [OH-] for a solution with the following pH values? a. 10.0 I got 1.0*10^-10 for [H3O+] and 1.0*10^-4 for [OH-] b. 5.0 I got 1.0*10^-5 for [H3O+] and 1.0*10^-9 for [OH-] c. 7.00 I got 1.0*10^-7 for [H3O+] and1.0*10^-7 f...

Please Help CHEM
Can you please tell me if these are right? Determine the pH for the following solutions A [OH-] = 1.0 X 10^-7 M I got 7 B. [H3O+ = 4.2 X 10 ^-3M I got 2.4 C. [H3O+]= 0.0001M I got 4 D. [OH-] = 8.5 X10^-9M I got 5.9 What are the [H3O+] and [OH-] for a solution with the followin...

math
5x/5=-3x/8+1

math
Solve. 2-8x=22

Help Chemistry
Help

Help Chemistry
Can you please tell me if these are right? Determine the pH for the following solutions A [OH-] = 1.0 X 10^-7 M I got 7 B. [H3O+ = 4.2 X 10 ^-3M I got 2.4 C. [H3O+]= 0.0001M I got 4 D. [OH-] = 8.5 X10^-9M I got 5.9 What are the [H3O+] and [OH-] for a solution with the followin...

ALGEBRA/ CONFIRMATION
I am told to graph and write in interval notation for 6 < x < 13. This is my answer (6,13) I would then graph with open ends to show that the endpoints are not included?? Please tell me if I am correct.

MATH
Max’s credit card charges him 1.575% interest per month on his average daily balance in that month. Max’s average daily balance for January is $810. What is the interest that he will pay for January

MATH
Max’s credit card charges him 1.575% interest per month on his average daily balance in that month. Max’s average daily balance for January is $810. What is the interest that he will pay for January

college physics
Rather than rotate completely horizontally, a carousel rotates at an angle of 10° from horizontal, with a constant angular velocity of 1.571 RAD/s. A box is placed 1.5 m from the axis of rotation. What’s the minimum coefficient of static friction so the box will not s...

Chem
Please tell me if these are right! 1.How many milliliters of 0.215 M NaOH solution are needed to completely neutralize 2.50 ml of 0.825 M H2SO4 solution? I got 19.2 ml 2. A 10.0-ml sample of vinegar which is an aqueous solution of acetic acid HC2G3O2 requires 16.5 ml of 0.500M...

MATH
A dog-food company makes a special kind of dog food. It consists of 30% meat powder and 70% grain. The meat powder costs 90 cents per pound. The grain costs 60 cents per pound. What is the cost of the raw materials per pound of dog food

college physics
One cm of a 10-cm-long rod is made of metal, and the rest is wood. The metal has a density of 5000kg/m^3 and the wood has a density of 500kg/m^3. When the rod is set into pure water, the metal part points downward. How much of the rod is underwater?

college physics
One cm of a 10-cm-long rod is made of metal, and the rest is wood. The metal has a density of 5000kg/m^3 and the wood has a density of 500kg/m^3. When the rod is set into pure water, the metal part points downward. How much of the rod is underwater?

MATH
SO HE STARTED OUT WITH 12?

MATH
Allen started out with x marbles. He doubled his number of marbles by buying an additional x marbles from Betty. Then he gave away one-third of all his marbles to his friend Clarence. At the end of the day, he had 16 marbles. How many marbles did he start out with

Business
How to develop documentation for Small Business professionals to manage a specific employment position that would assist professionals to choose, train, an develop successful employees toward helping the company meet its goals?

physics
what equation would i use if i wanted to find the magnitude for this problem A box of mass 32.0 kg is subject to an applied force (FA) with an elevation angle of 39.9°, and it accelerates to the right at 6.31 m/s2. The horizontal surface has a coefficient of friction μ...

English
In Life of Pi, which is the true story? To me, I think the answer can go either way... Can someone help me? :S

11th grade
No two anions may be put together in an ionic compound. Cl and Br are both negatively charged. You could put BACl2 for example.

11th grade
No two anions may be put together in an ionic compound. Cl and Br are both negatively charged. You could put BACl2 for example.

PLEASE HELP/ALGEBRA
thank you so much

PLEASE HELP/ALGEBRA
Solve by the elimination process: 0.3x - 0.2y = 4; 0.2x + 0.3y = 5/23

Math Help please!!
37. Darren worked 28 hours at $3.15 per hour. He made the following tips: $18, $16, $20, $30, and $18. What is his average hourly wage? $58 $20.40 $6.79

Algebra
Solve by the elimination process: 0.3x - 0.2y = 4; 0.2x + 0.3y = 5/23

Pre- cal Trig
2cos^2x=cosx. Can you subtract the cos from cos^2? Or what would i have to do?

algebra
A car generally depreciates 25% of its original value in the first year. A car is worth $27000 after the first year. What was its original cost?

physics
In a church choir loft, two parallel walls are 5.70 m apart. The singers stand against the north wall. The organist faces the south wall, sitting 0.900 m away from it. So that she can see the choir, a flat mirror 0.600 m wide is mounted on the south wall, straight in front of ...

Chemistry
which is an example of physical change 1.water decomposing into hydrogen and oxygen 2.potassium and bromine combining to form potassium bromide 3.solid ice melting into liquid water 4.none of the above i think its 3.

philosophy
"Happiness belongs to the self-sufficient." - Aristotle What does it mean? I don't get it...

physics
A laboratory centrifuge on earth makes n rpm (rev/min) and produces an acceleration of 7.00 g at its outer end. What is the acceleration (in g's, i.e., acceleration divided by g) at a point halfway out to the end?

physics
A laboratory centrifuge on earth makes n rpm (rev/min) and produces an acceleration of 7.00 g at its outer end. What is the acceleration (in g's, i.e., acceleration divided by g) at a point halfway out to the end?

physics
So how do you get the first part? "{

physics
So how do you get the first part? "{

medicine
How would you make a 1000ml soln of 5% dextrose in LRS from 100ml of 50% dextrose and 1000ml of LRS

Math
The table below gives the educational attainment of the U.S. population 25 years and older since 1960. Males- Percentage with 4 years of highschool 1960 39.5% 1970 51.9% 1980 67.3% 1990 77.7% 2000 84.2% 2004 84.8% Percentage with 4 years of college or more 1960 9.7% 1970 13.5%...

MATH
Perform the operation for each equation, if there is a solution [4k -8y ] [5k+6y 2k+1] [6z - 3x] - [2z+5x z+4] [2k + 5a] [4k+6a 3a+2]

Biology
Thank you

Biology
What are the benefits of antibiotic for human being?

chemistry
where is 1.155X10^-9 from?

chemistry
The Ka of hypochlorous acid (HClO) is 3.0 × 10-8 at 25°C. Calculate the pH of a 0.0385-M hypochlorous acid solution? i got help with this problem, but i dont get where one of the numbers came from (3.4 x 10^-5)??? i tried makeing 3.0 x 10^-8 the x but i still dont ge...

chemistry
The acid-dissociation constant, Ka, for gallic acid is 4.57 × 10-3. What is the base-dissociation constant, Kb, for gallate ion?

chemistry
The pH of a 0.55-M aqueous solution of hypobromous acid, HBrO, at 25°C is 4.48. What is the value of Ka for HBrO? how do you solve for Ka?

english 10th
what is a metaphor and hyperbole for the book the Bar Code Rebllion

algebra
how do you solve (f+g)(3) let f(x) = x2-2x and g(x)= x-5

US History
Evaluate the administrations of Presidents Hayes, Garfield, Arthur, Cleveland, and Harrison in reference to their conceptions of the office and the use of executive power.

chemistry
A 47.7-g sample of SrCl2 is dissolved in 112.5 mL of solution. Calculate the molarity of this solution.

physics
What is the energy in joules of an x-ray photon with wavelength 8.40*10e-10 m? ____J? (b) Convert the energy to electron volts. ___eV ?

Rodriguez
How many grams of CO2 will be produced when 29.0g of C3 H8 reacts with extra O2?

Calculus
a farmer has 160 ft of fence and wants a pen to adjoin to the whole side of the 130 ft barn. what should the dimensions be for maximum area?

Physics
A 70 kg man just before contact with the ground has a speed of 5 m/s In a stiff-legged landing he comes to a halt in 7ms (miliseconds). Keeping in mind that the average net force acting on the man includes both the force of the ground on the man and the gravity force, find the...

physics
what is the symbolic expression for the wavelength ë of a photon in terms of its energy E, Planck's constant h, and the speed of light c.

Math
What is the minimum value of the function f(x)= 4x^2+24x+39

Algebra
what is the value of k in the equation

Algebra
6x^2-11x-10=(3x+2)(2x+k)

English
Can you expand more on what you said? sorry..

English
Third point: He is from noble family? If I am correct, how does it make him a tragic hero? :/

English
How is Hamlet a tragic hero? I have these points 1. tragic flaws 2. he suffered throughout the play 3. ??? I need one more..I can't think of anything... someone help please.

Chemistry
If 0.117 mol of argon gas occupies 2.15 L at 725 mmHg, what is the temperature in degrees Celsius? please explain step by step. Thank you so much

math
What is the solution of the given equation? 12;8t=96?

Business
social dilema, how does I incorporate this. Would this be struggles between emplpyees. that is where i am most confussed on thank you

Business
Hiring o Performance evaluations o Discipline o Termination o Diversity o Harassment o Manager as a role model • Write a 1,050- to 1,400-word paper addressing the following points: o Describe the moral and ethical issues faced by managers dealing with your selected topic....

science
dormin, i think

Physics
As the temperature of an object becomes higher, what happens to the average wavelength of the radiation it emits?

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