Saturday

December 3, 2016
**Physics **

A mass (0.5 kg) and spring (k = 250 N/m) system oscillates with an amplitude of 3.5 cm. a) What is the total mechanical energy of the system? b) What is the maximum speed of the mass? c) What is the maximum acceleration of the mass? I need help please! Do it step by step and ...

*Friday, December 2, 2016 by Anonymous *

**Calculus**

Find the volume of the solid of revolution obtained by revolving the plane region R bounded by y= x^5, the y-axis, and the line y=3 about the x-axis So far: y=x^5 is equal to x=5th root y. I've plugged that in to pi(r^2)h, and got V = pi ?[0,3] y^(2/5) dy. so far I've ...

*Friday, December 2, 2016 by James*

**Algebra 1B**

24. Solve the system of equations algebraically. Show all of your steps. Y = x^2 + 2x and y = 3x + 20. Btw this is a workpad problem. I just need to be put in the right direction, on how to do it.

*Friday, December 2, 2016 by Ashley*

**Math**

The area of a right triangle is 12 square inches, and the sum of the lengths of the two legs, a and b, is 16 inches. Write a system that could be used to find the lengths of the legs of the right triangle.

*Friday, December 2, 2016 by Sylvester*

**Science**

A lead calorimeter with mass of 150g contains 200g of water. The calorimeter and water are in thermal equilibrium at a specific temperature. Two metallic blocks are placed into the water. One is a 50.0g piece of aluminum heated at 90 degrees celcius. The other has a mass of ...

*Friday, December 2, 2016 by Anonymous*

**Science**

A lead calorimeter with mass of 150g contains 200g of water. The calorimeter and water are in thermal equilibrium at a specific temperature. Two metallic blocks are placed into the water. One is a 50.0g piece of aluminum heated at 90 degrees celcius. The other has a mass of ...

*Friday, December 2, 2016 by Angel*

**algebra 2a solving systems using matrices**

write the system of equations represented by the matrix [0 1 2 4] [-2 3 6 9] [1 0 1 3] a: x+2y=4 -2x-3y+69=0 x+y=3 b: x+2y=4 -2-3y+6=9 x+y=3 c: y+2z=4 -2x+3y+6z=9 x+z=3 d: x+2z=4 -2x-3y+6=9 think its A

*Friday, December 2, 2016 by mia*

**Physics**

One of their side jobs is a safe delivery and installation. A pulley system is used to lift the safe 2 meters above the ground. But the rope snaps! To avoid cracking from any drops, a large, stiff spring is placed below the safe while it's lifted. If the 1200 kilograms ...

*Thursday, December 1, 2016 by Anonymous *

**Social Studies**

Could you help me with these questions? 1. Which statement best explains the significance of the signing of the Mayflower Compact? * 2. What was a major reason for the colonization of the Americas by Europeans? * 3. Which reason led to the establishment of colonies in both ...

*Thursday, December 1, 2016 by King Comfort*

**8th Grade Social Studies A**

What are the answers to the Unit 2 Lesson 11 Colonial Settlement Unit Test? 1. Which statement best explains the significance of the signing of the Mayflower Compact? * The colonists swore to survive together or die in North America. The colonists agreed to create their own ...

*Thursday, December 1, 2016 by King Comfort*

**History**

1. Which statement best explains the significance of the signing of the Mayflower Compact? * The colonists swore to survive together or die in North America. The colonists agreed to create their own government and to obey its rules. The colonists declared their independence ...

*Thursday, December 1, 2016 by King Comfort*

**science **

I'm stuck on the following questions 1)The geocentric model of the universe states that the Earth is the center of the universe. This is an example of a A)scientific conclusion B)pseudoscience C)scientific law*** D)Scientific method Through process of elimination i know ...

*Wednesday, November 30, 2016 by katrina *

**precalculus**

When using Gaussian elimination to solve a system of linear equations, explain how you can recognize that the system has no solution.

*Wednesday, November 30, 2016 by Anonymous*

**precalculus**

When using Gaussian elimination to solve a system of linear equations, explain how you can recognize that the system has no solution. Give an example that illustrates your answer.

*Wednesday, November 30, 2016 by Anonymous*

**precalculus**

Can you check my answer? If it is wrong can you please explain why and give the correct answer? Use Gaussian elimination to write the system of equations given below in row-echelon form. 2x+4y+z=-4 2x-4y+6z=13 4x-2y+z=6 answer:2x+4y+z=-4 8y-5z=-17 z=1

*Wednesday, November 30, 2016 by Anonymous*

**precalculus **

please check my answers 1.Use Gaussian elimination to write the system of equations given below in row-echelon form. 2x+4y+z=-4 2x-4y+6z=13 4x-2y+z=6 answer:2x+4y+z=-4 8y-5z=-17 z=1 2.Find the solution to the system of equations given below. x+y+z=2 -x+3y+2z=8 4x+y=4 answer: 0...

*Wednesday, November 30, 2016 by Anonymous*

**pre calculus**

Use Gaussian elimination to write the system of equations given below in row-echelon form. 2x+4y+z=-4 2x-4y+6z=13 4x-2y+z=6

*Wednesday, November 30, 2016 by Anonymous*

**Algebra**

A grocery store makes a 20-pound mixture of almonds and cashew nuts. The store charges $4 per pound for almonds and $5.50 per pound for cashews. The total value of the mixture is $92. Write a system to find how many pounds of each type of nut are in the mixture.

*Wednesday, November 30, 2016 by Nola*

**Science**

The lung is to the respiratory system as the ____ is to the integumentary system. A) heart B) kidney C)hand D)brain B

*Wednesday, November 30, 2016 by Hayden*

**precalculus**

write the system of equations in row-echelon form 2x+4y+z=-4 2x-4y+6z=13 4x-2y+z=6

*Tuesday, November 29, 2016 by Anonymous*

**precalculus**

how do you determine when a system of equations is written in row-echelon form?

*Tuesday, November 29, 2016 by Anonymous*

**object oriented programming**

Let’s consider there will be 5 delicious food available at your new restaurant which will open by the end of 2016. To make the cashier's job easier, build a C++ console application to automate the process of billing on a daily basis. Specifically, the billing system ...

*Tuesday, November 29, 2016 by ramaah*

**Social Studies**

Which of the following statements best summarizes the system of railroads shown on the map? A. The majority of the railroads that connected the North to the South were built by 1850. B. The railroads established by 1860 each began and ended at a major American city or port. C...

*Tuesday, November 29, 2016 by JP*

**pre calculus**

Use Gaussian elimination to write the system of equations given below in row-echelon form 2x+4y+z=-4 2x-4y+6z=13 4x-2y+z=6

*Tuesday, November 29, 2016 by Anonymous*

**Physics**

Could someone please help walk me through this problem I'm struggling with? Thanks in advance! A brick with mass m1=2.5 kg can move without friction on a horizontal plane. The brick is attached to a wall by an ideal spring with spring constant k=2300 N/m. A second brick ...

*Tuesday, November 29, 2016 by Jamie*

**Physics**

Hi, I've been having trouble with this physics problem. I'm not sure where to begin. A brick with mass m1=2.5 kg can move without friction on a horizontal plane. The brick is attached to a wall by an ideal spring with spring constant k=2300 N/m. A second brick with ...

*Tuesday, November 29, 2016 by Josh*

**pre calculus**

Create systems of equations in two variables that have (a) no solution, (b) one distinct solution, and (c) infinite solutions. Show that each system has the indicated number of solutions by using a graph or solving the system.

*Tuesday, November 29, 2016 by Anonymous*

**precalculus **

Which of the following shows an inconsistent system of equations? ________________________________________ 4x - 2y = 10 ; y = 2x - 5 3x + 2y = 1 ; 2x - 3y = 1 2x + y = 2 ; y = -2x - 2 3x + 4y = 5 ; 6x + 8y = 10 Is 4x-2y=10 y=2x-5 the correct answer?

*Tuesday, November 29, 2016 by Anonymous*

**precalculs**

how do you find all the solutions to the system of equations .2x^2-2x-y=14 .2x-y=-2

*Tuesday, November 29, 2016 by Anonymous*

**precalculus **

how do you find all the solutions to the system of equations .x+y=0 .x^3-5x-y=0

*Tuesday, November 29, 2016 by Anonymous*

**precalculus**

8. Solve the system of equations shown below. .3/4x-5/2y=-9 .-x+6y=28 x = 21.5, y = 8.25 x = -8, y = 6 x = 8, y = 6 x = -21.5, y = 8.25

*Tuesday, November 29, 2016 by Anonymous*

**Social Studies**

The Free-Soil party would most likely agree with which of the following? Plantation system Manifest destiny (my answer) Increased immigration Popular sovereignty

*Monday, November 28, 2016 by Betta Fish*

**Physics**

The figure shows a pV diagram of a gas for a complete cycle. During part bc of the cycle, 1190 J of heat flows into a system, and at the same time the system expands against a constant external pressure of 7.00 × 104 Pa as its volume increases from 0.0200 m3 to 0.0800 m3...

*Monday, November 28, 2016 by Sabrina*

**math**

he coordinate plane below represents a city. Points A through F are schools in the city. graph of coordinate plane. Point A is at negative 5, 5. Point B is at negative 4, negative 2. Point C is at 2, 1. Point D is at negative 2, 4. Point E is at 2, 4. Point F is at 3, negative...

*Monday, November 28, 2016 by Ashley*

**World History**

How did the Shinto belief system develop in early Japan? A. Clans erected shrines to worship their ancestors. B. Buddhist ideas evolved into Shinto beliefs. C. Warriors built shrines to remember fallen comrades D. Clans honored powerful natural spirits and gods. Is the answer ...

*Monday, November 28, 2016 by Anonymous*

**precalculus**

Which of the following would be the best first step when solving the following system using the substitution method? • x - y = -4 ; • x + 2y = 5 x = -4 - y x = -4 + y 2y = 5 - x 2y = 5 + x I have solved the equation but I am unsure which is the best first step. x-y=-...

*Monday, November 28, 2016 by Anonymous*

**precalculus**

Which of the following would be the best first step for solving the system of equations by elimination? • 6.3x + 7.2y = 5.4 • 5.6x + 6.4y = 4.8

*Monday, November 28, 2016 by Anonymous*

**History **

Why is urbanization associated with the industrial revolution? The expansion of family farms refocused the nation on agriculture •• The concentration of factories in cities brought job opportunities Settlers expanded the frontier west of the Mississippi River ...

*Monday, November 28, 2016 by Lola*

**Math**

The coordinate plane below represents a city. Points A through F are schools in the city. graph of coordinate plane. Point A is at negative 5, 5. Point B is at negative 4, negative 2. Point C is at 2, 1. Point D is at negative 2, 4. Point E is at 2, 4. Point F is at 3, ...

*Monday, November 28, 2016 by Bea*

**Math**

The coordinate plane below represents a city. Points A through F are schools in the city. graph of coordinate plane. Point A is at negative 5, 5. Point B is at negative 4, negative 2. Point C is at 2, 1. Point D is at negative 2, 4. Point E is at 2, 4. Point F is at 3, ...

*Monday, November 28, 2016 by Bea*

**American History**

The federal government sets requirements that all public schools must follow, while state governments set standards listing what students need to learn. This is an example of what constitutional system? A. dual federalism B. cooperative federalism C. layered federalism D. ...

*Sunday, November 27, 2016 by Anon*

**physics**

A block and tackle pulley system is used to lift a mass of 200 kg.if the machine has a velocity ratio of 5 and efficiency of 80%.sketch the possible arrangement of the system

*Sunday, November 27, 2016 by moses*

**Physics**

Block A, with a mass of 10 kg, rests on a 36.9° incline. It is attached to a string that is parallel to the incline and passes over a massless, frictionless pulley at the top. Block B, also with a mass of 10 kg, is attached to the dangling end of the string. The two blocks...

*Sunday, November 27, 2016 by ANON*

**American Government **

The federal government sets requirements that all public schools must follow, while state governments set standards listing what students need to learn. This is an example of what constitutional system? A. dual federalism B. cooperative federalism C. layered federalism D. ...

*Saturday, November 26, 2016 by Jane*

**MS>SUE OR ANYONE**

–2v – 7 = –23 (1 point) 15******** 8 –8 –15 2. start fraction x over 3 end fraction – 10 = –12 (1 point) –6 –66 6****** 66 3. start fraction x over 5 end fraction + 6 = 10 (1 point) 44 30 20******** –20 4. 3(4 – 2x) = &#...

*Saturday, November 26, 2016 by Bill Cipher*

**Physics**

A tension spring opposes being stretched, but offers no resistance to being compressed (think of a slinky!). A tension spring, with an equilibrium length of 1.25 m, is suspended by one end from a ceiling at a height of 2.5 m above the ground; a mass of 100 g is attached to the...

*Saturday, November 26, 2016 by Nick*

**MATH HELP NEEDED prt 2 **

–2v – 7 = –23 (1 point) 15******** 8 –8 –15 2. start fraction x over 3 end fraction – 10 = –12 (1 point) –6 –66 6****** 66 3. start fraction x over 5 end fraction + 6 = 10 (1 point) 44 30 20******** –20 4. 3(4 – 2x) = &#...

*Saturday, November 26, 2016 by Bill Cipher*

**MATH HELP NEEDED **

. –2v – 7 = –23 (1 point) 15******** 8 –8 –15 2. start fraction x over 3 end fraction – 10 = –12 (1 point) –6 –66 6****** 66 3. start fraction x over 5 end fraction + 6 = 10 (1 point) 44 30 20******** –20 4. 3(4 – 2x) = &#...

*Saturday, November 26, 2016 by Bill Cipher*

**science**

A system contains 0.15 m3 of a gas at a pressure of 3.8 bar and 150 C. It is expanded adiabatically till the pressure falls to 1 bar. The gas is then heated at a constant pressure till its change in enthalpy is 70 kJ. Determine the total work done.

*Saturday, November 26, 2016 by seeoo*

**math**

please check my answers below and correct me if i am wrong please 1. At Lexi Corp., sales revenue is $20 million, the cost of goods sold is $14 million, operating expenses are $3 million, and income taxes are $1 million. What is the company's operating income? Select one...

*Friday, November 25, 2016 by polly*

**American Government **

what kind of state court system is set up so that trial courts hears those cases arising within its own district, circuit, or county, no matter what the subject might be? A. appellate courts B. geographically based courts C. state supreme courts D unified court systems is the ...

*Friday, November 25, 2016 by Leslie *

**science**

A system contains 0.15 m3 of a gas at a pressure of 3.8 bar and 150 C. It is expanded adiabatically till the pressure falls to 1 bar. The gas is then heated at a constant pressure till its change in enthalpy is 70 kJ. Determine the total work done.

*Friday, November 25, 2016 by seeoo*

**Circuits and electronics applications3**

Figure 1 below shows the circuit we'll be using to explore the step response of an RLC circuit. The voltage source produces a 1V step at t=0. Initially the resistor has been set to 0?. We'll be probing the voltage across the capacitor, which will indicate the amount of...

*Friday, November 25, 2016 by sengeni*

**Circuits and electronics applications3**

Consider the second order low pass filter circuit shown below. The differential equation associated with the input voltage vi(t) and the output voltage vo(t) of this system can be written in the following form: A?d2vodt2+B?dvodt+C?vo=vi Where the coefficients A, B, and C can ...

*Friday, November 25, 2016 by sengeni*

**hisory help **

1. Why was the Han period considered a Golden Age of Chinese civilization? (1 point) A. because of the establishment of a Legalist government B. because of the establishment of the Silk Road C. because of the advances made in ironworking and farming D. because of advances in ...

*Thursday, November 24, 2016 by Anonymous*

**physics**

A liquid stands at the same level in the u-Tube when at rest what will the difference in height h of the liquid in the two limbs of the u-Tube, when the system is given An acceleration a towards right? take a as area of a cross section and G as the acceleration due to gravity

*Thursday, November 24, 2016 by vijay kumar*

**Algebra**

Create a system of equation that has no solution: - write the equations in two different forms(4) Create a system of equation that has infinitely many solution - write the equations in two different forms (4) One important Question: How am I suppose to form a table out of this...

*Thursday, November 24, 2016 by Tina *

** Gaussian Elimination Method**

Is my answer correct? Write the system of equations as an augmented matrix. Then solve for x and y. ?4x?y=6 12x-2y=-8 Solution = -1,-2

*Wednesday, November 23, 2016 by plummer*

**system of equations **

Write the system of equations as an augmented matrix. Then solve for x and y. -4x-y=6 12x-2y=-8

*Wednesday, November 23, 2016 by FARINTI*

**Find the solution to the system of equations: **

Are my answers correct? x-2y+z=1 y+2z=2 x+y+3z=3 Solution : 100 010 001 x = 0.429 y = 0.429 z = 0.714

*Wednesday, November 23, 2016 by nagano*

**Gaussian Elimination Method**

Write the system of equations as an augmented matrix. Then solve for x and y. 5x-4y=12 -5x+3y=9

*Wednesday, November 23, 2016 by jimmy*

**science**

How much work is done by the system if the internal energy decrease by 100j when 200j applied to the system

*Wednesday, November 23, 2016 by Haopu *

**physics**

Specific heat capacity of a certain metal is found by heating the metal and then placing it into water which is in a container made of the same material. The metal has mass of 100g and is heated to 100 degrees celsius. The container has mass of 200g and contains water of 500g ...

*Tuesday, November 22, 2016 by Micheal*

**Thermodynamic**

A system contains 0.15 m3 of a gas at a pressure of 3.8 bar and 150 C. It is expanded adiabatically till the pressure falls to 1 bar. The gas is then heated at a constant pressure till its change in enthalpy is 70 kJ. Determine the total work done. Pl hlep me

*Tuesday, November 22, 2016 by Abdu*

**american goverment check answers**

9. What criteria might a judge who abides by a philosophy of judicial restraint use to decide a case? (1 point) The judge would consider previous court decisions on the topic but ultimately consider the current circumstances and changes in society. The judge would not consider...

*Monday, November 21, 2016 by Anonymous*

**computer science**

In a particular phase modulation system, each symbol is able to represent 4 bits. What sort of PSK is being used?

*Monday, November 21, 2016 by yomi*

**Econ check my answers please **

Below are a few questions I had difficulty with so please check my answers and correct me if I am wrong, thanks :) 1. Kim, a public relations manager, has just completed the process of checking the references of several job candidates. What should she do next? Select one: A. ...

*Sunday, November 20, 2016 by Raye*

**Economics**

Below are a few questions I had difficulty with so please check my answers and correct me if I am wrong, thanks :) 1. Kim, a public relations manager, has just completed the process of checking the references of several job candidates. What should she do next? Select one: A. ...

*Sunday, November 20, 2016 by Raye*

**Math**

Solving system of equations by substitution. 52. {5x-2/4+1/2=3y+2/2;7y+3/3=x/2+7/3

*Sunday, November 20, 2016 by Carly*

**ACCOUNTING **

Budgets are ___________________________. (Points : 1) A a tool for management to use to penalize managers with poor performance B detailed financial plans that quantify future expectations and actions C busy work assigned to keep department managers from wasting valuable time ...

*Saturday, November 19, 2016 by madam*

**Science**

A system comprising blocks, a light frictionless pulley, and connecting ropes is shown. The 9 kg block is on a smooth horizontal table The surfaces of the 12 kg block are rough, with ? = 0.30. In Figure 5.7, the mass M is set so that it descends at constant velocity when ...

*Saturday, November 19, 2016 by Ala'a*

**java program**

write aprogram that can display the payrol system

*Saturday, November 19, 2016 by guze*

**math**

Two ships pursue straight-line courses at steady speeds. At each time t (in hours, where 0 less-than-or-equal t less-than-or-equal 14), the positions of the two ships are given by: Ship A (10t+35, 20t+25) Ship B (11t+15, 22t+15) These coordinates are with reference to a ...

*Friday, November 18, 2016 by s17*

**US History**

ALL of the countries below are matched CORRECTLY with the outcomes of colonization except for: a. English: established permanent settler colonies despite hardships b. Spanish: failed to find gold or to convert the Indians to Christianity c. French: succeeded in the fur trade ...

*Thursday, November 17, 2016 by Anonymous*

**American Government**

1) Why are independent regulatory commissions considered quasi-legislative? A) They are part of the legislative branch B) The rules and regulations they make have the force of law** C) They are independent of the executive branch but not the legislative branch D) They are ...

*Thursday, November 17, 2016 by Juliet*

**Algebra**

An engineer designs a satellite dish with a parabolic cross section. The dish is 10 ft wide at the? opening, and the focus is placed 8 ft from the vertex. ?a) Position a coordinate system with the origin at the vertex and the? x-axis on the? parabola's axis of symmetry and...

*Wednesday, November 16, 2016 by Lacey*

**physics**

A 2.0 g bullet is shot with an initial velocity of 200.0 m/s into a board (I = 12.0 kg m2). The board is held still by a frictionless pivot a third away from its bottom end, as shown below. Assume that you can treat the board as a uniform rod. 1. What is the initial angular ...

*Wednesday, November 16, 2016 by anna*

**Physics **

A 4.0 g bullet is shot with an initial velocity of 300.0 m/s into a board (I = 19.0 kg m2). The board is held still by a frictionless pivot a third away from its bottom end, as shown below. Assume that you can treat the board as a uniform rod. 1) What is the initial angular ...

*Wednesday, November 16, 2016 by Sara S*

**Algebra**

An engineer designs a satellite dish with a parabolic cross section. The dish is 14 ft wide at the? opening, and the focus is placed 4 ft from the vertex. ?a) Position a coordinate system with the origin at the vertex and the? x-axis on the? parabola's axis of symmetry and...

*Wednesday, November 16, 2016 by Jason*

**physics**

A system consists of a 0.130-kg chunk of ice floating in 1.12 kg of water, all at 0 ?C. Part A How much thermal energy must be added to the system to convert it to 1.25 kg of water at 15.0 ?C?

*Wednesday, November 16, 2016 by ......*

**Social Studies. Please help!**

3. Which of the following statements best summarizes the system of railroads shown on the map? A: The majority of the railroads that connected the North to the South were built by 1850. B: The railroads established by 1860 each began and ended at a major American city or port ...

*Wednesday, November 16, 2016 by ???*

**physics**

Acceleration of a Mass in a Pulley System Block 1 of mass m1 slides on a frictionless plane inclined at angle ? with respect to the horizontal. One end of a massless inextensible string is attached to block 1. The string is wound around a frictionless movable pulley P of ...

*Tuesday, November 15, 2016 by simon*

**history**

1. Which statement best explains the significance of the signing of the Mayflower Compact? * 5 points A)The colonists swore to survive together or die in North America. B)The colonists agreed to create their own government and to obey its rules. C)The colonists declared their ...

*Tuesday, November 15, 2016 by connexus*

**math**

Alice is working 2 jobs to save up money for a trip. She works at the ice cream shop for $9 an hour and babysitting for $12 an hour. She needs to earn at least $200 per week and can only work 20 hours per week. Write a system of inequalities to model the number of hours she ...

*Tuesday, November 15, 2016 by amy*

**Social Studies**

1.What prompted the call to rewrite the Articles of Confederation? A:The desire to win independence by unifying the nation B:The economic downturn caused by the limitations on the central government C:The need to establish a national court system to deal with uprising colonist...

*Monday, November 14, 2016 by Help please*

**chemistry**

A process is carried out at constant pressure. Given that ?E is positive and ?H is negative, Select one: A. the system absorbs heat and contracts during the process. B. the system absorbs heat and expands during the process. C. the system loses heat and contracts during the ...

*Monday, November 14, 2016 by betty boop*

**Social studies**

1, what did Alexis de Tocqueville observe on his visit to the United States that reflected changes that were happening in the country during Jackson's administration A strict divide between rich and poor*** A growing spirit of democracy and equality between classes A ...

*Sunday, November 13, 2016 by Amiee*

**Chemistry**

When you try to leave your room you learn that the only door out is locked. Assuming there is no air flow into the room (air tight with no ventilation system) how long can you survive in the room (5 meters long, 5 meters wide, 5 meters high) -Human tidal volume (volume of air ...

*Sunday, November 13, 2016 by Sarah*

**Math (Algebra)**

A chemistry student needs to make 60 liters of a 30% alcohol solution. He has a 20% alcohol solution and a 40% alcohol solution in the lab. How many liters of each strength does he need to mix together *The system of equations I did was: a+b=60 & .2a+.4b=18. I may be wrong but...

*Saturday, November 12, 2016 by Amber*

**PHYSICS**

Heat transfer Q and work done W are always energy in transit, whereas internal energy E is energy stored in a system. Give an example of each type of energy, and state specifically how it is either in transit or resides in a system.

*Saturday, November 12, 2016 by JAY*

**Goverment**

list the advantages and disadvantages of confederal system of government

*Saturday, November 12, 2016 by Angelflora*

**chem**

At 25ºC and 1 atmosphere the following equilibrium is eatablished : 2NO (g) <=> N2O4 (g) The partial equilibrium pressure of N2O4 is 0.7 atm. A) calculate Kp of the above system at 25ºC. B) calculate the partial pressure of the above two...

*Saturday, November 12, 2016 by angy*

**chemistry**

At 25ºC and 1 atmosphere the following equilibrium is eatablished : 2NO (g) <=> N2O4 (g) The partial equilibrium pressure of N2O4 is 0.7 atm. A) calculate Kp of the above system at 25ºC. B) calculate the partial pressure of the above two gases at equilibrium ...

*Friday, November 11, 2016 by angy*

**Heath**

1. Which digestive organ is the last organ food passes through before reaching your stomach? (1 point) pharynx epiglottis esophagus mouth 2. Starches and sugars belong to which class of nutrients? (1 point) carbohydrates fats proteins enzymes 3. A method for assessing your ...

*Friday, November 11, 2016 by Help*

**science**

does to skeletal system send signals to yuor brain

*Thursday, November 10, 2016 by krystina*

**Physics**

A simple Atwood’s machine uses a massless pulley and two masses m1 and m2. Starting from rest, the speed of the two masses is 8.2 m/s at the end of 2.2 s. At that time, the kinetic energy of the system is 30 J and each mass has moved a distance of 9.02 m. Find the value ...

*Thursday, November 10, 2016 by Jenny*

**Physics**

A certain number of identical resistors are connected in series and their total resistance is measured. When the resistors are disconnected and re-connected in parallel, their total resistance drops to one-percent of the value measured when they were connected in series. How ...

*Wednesday, November 9, 2016 by Tim*

**Calculus**

Which of the following would be the best first step when solving the following system using the substitution method? x - y = -4 ; x + 2y = 5 a. x = -4 - y b. x = -4 + y c. 2y = 5 - x d. 2y = 5 + x

*Wednesday, November 9, 2016 by Iris*

**plz..chemistry help**

One mole of solid NH4Cl (s) isvheated in a closed box to decompose it partially according to the following reaction: NH4Cl (s) <=> NH3 (g) +HCl (g) A) calculate Kp of the above system at the temperature of the experiment if the partial pressure of ammonia at ...

*Wednesday, November 9, 2016 by hannah*

**chemistry**

One mole of solid NH4Cl (s) isvheated in a closed box to decompose it partially according to the following reaction: NH4Cl (s) <=> NH3 (g) +HCl (g) A) calculate Kp of the above system at the temperature of the experiment if the partial pressure of ammonia at equilibrium ...

*Wednesday, November 9, 2016 by hannah*