# Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 2x + 10y = 58 -14x + 8y = 140

91,718 questions, page 803-
## Chemistry

To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water. 4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H2O(l) 4 NaAu(CN)2(aq) + 4 NaOH(aq) Determine the mass of gold that can be extracted if 27.4 g sodium

*asked by tdb on February 9, 2010* -
## chemistry

To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water. 4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H2O(l) 4 NaAu(CN)2(aq) + 4 NaOH(aq) Determine the mass of gold that can be extracted if 27.4 g sodium

*asked by tg on February 7, 2010* -
## Chemestry

To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water. 4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H2O(l) 4 NaAu(CN)2(aq) + 4 NaOH(aq) (a) Determine the mass of gold that can be extracted if 29.3 g sodium

*asked by Kenah Smith on February 6, 2013* -
## physics

Problem: A sample of liquid has amass of 1.04 kg and a volume of 1300 ml. If the mass of the sampleis to be increased by 70 g by adding more of the same kind kind ofliquid, what volume of liquid must be added? Solution given: 1) 1040/1300=.80 2) 70/.80=88

*asked by andrea on January 24, 2011* -
## physics

Problem: A sample of liquid has amass of 1.04 kg and a volume of 1300 ml. If the mass of the sampleis to be increased by 70 g by adding more of the same kind kind ofliquid, what volume of liquid must be added? Solution given: 1) 1040/1300=.80 2) 70/.80=88

*asked by andrea on January 24, 2011* -
## Chemistry

To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water. 4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H2O(l) 4 NaAu(CN)2(aq) + 4 NaOH(aq) (a) Determine the mass of gold that can be extracted if 21.4 g sodium

*asked by Dovahkiin on February 19, 2011* -
## Chemestry

To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water. 4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H2O(l) 4 NaAu(CN)2(aq) + 4 NaOH(aq) (a) Determine the mass of gold that can be extracted if 29.3 g sodium

*asked by Kenah Smith on February 6, 2013* -
## Math

From an observation tower that overlooks a runway, the angles of depression of point A, on one side of the runway, and point B, on the opposite side of the runway are, 6 degrees and 13 degrees, respectively. The points and the tower are in the same

*asked by jasmine on July 21, 2013* -
## MATH

E LARGEST PYRAMID IN THE U.S. IS THE LUXUR HOTEL IN VEGAS. THE VOLUME OF THIS HOTEL IS 28,933,800 OR ABOUT 29 MILLION CUBIC FEET. THE HEIGHT OF THE PYRAMID IS 148 FEET LESS THAN THE LENGTH OF THE BUILDING. THE BASE OF THE BUILDING IS SQUARE. FIND THE

*asked by HOPE on March 10, 2008* -
## calc

Are these correct? lim x->0 (x)/(sqrt(x^2+4) - 2) I get 4/0= +/- infinity so lim x->0+ = + infinity? and lim x->0- = + infinity? lim x->1 (x^2 - 5x + 6)/(x^2 - 3x + 2) I get 2/0, so lim x-> 1+ = - infinity? and lim x->1- = + infinity? lim h->0

*asked by Chelsea on October 13, 2010* -
## Calc. Limits

Are these correct? lim x->0 (x)/(sqrt(x^2+4) - 2) I get 4/0= +/- infinity so lim x->0+ = + infinity? and lim x->0- = + infinity? lim x->1 (x^2 - 5x + 6)/(x^2 - 3x + 2) I get 2/0, so lim x-> 1+ = - infinity? and lim x->1- = + infinity? lim h->0

*asked by Chelsea on October 13, 2010* -
## Algebra 2

Describe two laws of exponents and provide an example illustrating each law. Explain how to simplify your expression. How do the laws work with rational exponents? Provide a third expression to simplify that includes rational (fractional) exponents

*asked by Help Please on April 28, 2008* -
## Calc Please Help

Are these correct? lim x->0 (x)/(sqrt(x^2+4) - 2) I get 4/0= +/- infinity so lim x->0+ = + infinity? and lim x->0- = + infinity? lim x->1 (x^2 - 5x + 6)/(x^2 - 3x + 2) I get 2/0, so lim x-> 1+ = - infinity? and lim x->1- = + infinity? lim h->0

*asked by Chelsea on October 14, 2010* -
## Math

Problem Solving: Work Backward Will arrived at his mother's office at 3 p.m. It took him 30 minutes to walk from his home to the mall. He was in the mall for 45 minutes. It them took him 15 minutes to walk to his mother's office. At what time did Will

*asked by Quan on May 2, 2013* -
## Physics/Math

A boy whirls a stone in a horizontal circle of radius 1.2 m and at height 2.0 m above ground level. The string breaks, and the stone flies horizontally and strikes the ground after traveling a horizontal distance of 10 m. What is the magnitude of the

*asked by winterWX on February 3, 2007* -
## math

Paula is an office manager for ABC Advertising. She has been tasked with finding a copy machine that falls within a budget of $750 per month. She finds a company that will lease the machine for $275 a month. Each copy costs 4¢ and a ream of 500 sheets of

*asked by sally on April 25, 2014* -
## Physics

So I have worked out the 'allowed' configurations for four particles which can occupy 5 different energy levels (1, 3, 5, 7, 9) and now I need to work out the average number of particles in a particular energy level (i.e 3). 1) 9,5,1,1 2) 9,3,3,1 3)

*asked by Anon on May 6, 2018* -
## physics!!

A flight attendant pulls her 70.0 N flight bag a distance of 263 m along a level airport floor at a constant speed. The force she exerts is 41.0 N at an angle of 52.0° above the horizontal. (b) Find the work done by the force of friction on the flight

*asked by brittany on April 15, 2010* -
## math

Take any number (except for 1). Square that number and then subtract one. Divide by one less than your original number. Now subtract your original number. Did you reach 1 for an answer? You should have. How does this number game work? Hint: Redo the number

*asked by Paula on November 2, 2010* -
## physics

A 79-kg sprinter accelerates from rest to a speed of 11.0 m/s in 4.8 s. (a) Calculate the mechanical work done by the sprinter during this time. J (b) Calculate the average power the sprinter must generate. W (c) If the sprinter converts food energy to

*asked by Annette on April 29, 2013* -
## physics

A 79-kg sprinter accelerates from rest to a speed of 11.0 m/s in 4.8 s. (a) Calculate the mechanical work done by the sprinter during this time. J (b) Calculate the average power the sprinter must generate. W (c) If the sprinter converts food energy to

*asked by Annette on April 29, 2013* -
## Physics ( just need a lil help multiplying

Calculate the force of gravity between a 2.50 kg newborn baby and a 80.0 kg doctor standing 0.250 m away. G = 6.67 E -11 N*m2/kg2 My work Fg = (Gm1 Gm2) /d^2 m1=2.50 kg m2=80.0 kg d=0.250 m g=6.67 E -11 N*m2/kg2 Fg = (Gm1 Gm2) /d^2 Fg= g ( 2.50 kg)(80.0

*asked by Bongo on February 1, 2008* -
## Math (money)

After spending $200 of her money on a dress. Lily spent 20% of her remaining money on a bag. She then spent $131 on a pair of shoes. In the end, she had 20% of the original amount Lily had at first. What is the original total amount she had at first? My

*asked by user1234 on June 7, 2016* -
## Physics

The temperature in an electric oven is 165°C. The temperature at the outer surface in the kitchen is 55°C. The oven (surface area = 1.6 m2) is insulated with material that has a thickness of 0.023 m and a thermal conductivity of 0.045 J/(sm°C). a) How

*asked by papito Urgent help needed on April 18, 2007* -
## Chemistry

A large sport utility vehicle has a mass of 2500kg. Calculate the mass of CO2 emitted into the atmosphere upon accelerating the SUVfrom 0.0mph to 66.0 mph. Assume that the required energy comes from the combustion of octane with 30% efficiency. (Hint: Use

*asked by Ashley on December 3, 2010* -
## Geography

Textile mills in America and Europe became more efficient due to advancements in machinery such as the Spinning Jenny and power loom. What resulted from the technology advancements in the textile industry? Women and children never had to work in textile

*asked by Bro on February 6, 2019* -
## LA 7

Which statement from "Why Do We Need Zoos?" best captures the author's point of view? 1. "...zoos were open to the general public, too, so everyone could find out about animals." 2. "Some people feel that there is lots of wild space and that animals should

*asked by Cool on April 26, 2016* -
## math

A certain football league has the following scoring system: - each field goal counts for 5 points - each touchdown counts for 3 points The only way to score points is with some combination of field goals and touchdowns. They have noticed that not every

*asked by Kelly on October 15, 2006* -
## English

Do these work? We have to pick quotes from a book I read. Do you see these as representing the chosen items? Bravery: (This quote talks about how she is going to plead innocent,knowing she will die anyway for being a witch) “If I do not do this thing,

*asked by Bryce on August 7, 2013* -
## sciology college course

A science teacher tells her class that their final project requires the student to measure a specific variable and determine the velocity of a car with no more 2.5% error. Jennifer and johnny work hard and decide the velocity of the car is 34.87 m/s. The

*asked by sucker 1 on April 14, 2013* -
## science

A science teacher tells her class that their final project requires the students to measure a specific variable and determine the velocity of a car with no more than 2.5% error. Jennifer and Johnny work hard and decide the velocity of the car is 34.87 m/s.

*asked by JUSTIN on May 19, 2013* -
## Physics (Normal force and static coefficient)

Calculate the normal force for a 2 kg object at rest on an inclined surface, α=42 degrees How much is the static coefficient of friction between the surface and the block ---- My work: N = mg*cos(θ) N = (2kg)(9.8n/m^2)cos(42) = 14.57 N F = µsN µs = F/N

*asked by Jana on June 18, 2016* -
## Physics

In two separate experiments, a sample of helium gas is taken from the same initial state to the same final state, along two separates paths on a P-V diagram. Path a has two parts: first an isochor and second isobar. Path b is an isotherm. Determine the

*asked by Bryan on February 18, 2018* -
## math

Hi again. I don't understand these two questions so um please help me. Also explain me how to do it. Please 1. An electrician charges $40 to come to your house. She also charges $55 for each hour that she works. The electrician charges you a total of $190.

*asked by Amanda on September 25, 2017* -
## Chemistry

the specific heat of a substance is the energy (Joules) required to raise one gram of substance by one degree celsius (units J/g°C). Heating 225.0° cm3 of a solid from 36.1° to 74.3°C takes 35850 J of energy. The density of the solid at 36.1°C is 1.75

*asked by Ally on March 15, 2011* -
## computers in day care

Which of the following statements about children and computers is not correct? A. Today, many children begin using computers in preschool or day care. B. Some day care providers begin computer-assisted instruction with children as young as two years old.

*asked by nk on July 24, 2011* -
## PHYSICS : )

A flight attendant pulls her 69.1 N flight bag a distance of 280 m along a level airport floor at a constant velocity. The force she exerts is 32.7 N at an angle of 50.2◦ above the horizontal. Find the work done by the force of friction on the flight

*asked by Jay on October 18, 2008* -
## Chemistry

Could you please check my work about complete ionic and net ionic equations. They really confuse me. My original equation, after I balanced, was: FeCl2(aq)+Na2S(aq)=FeS(s)+2NaCl(aq). For complete Ionic I think its:

*asked by DeDe on April 21, 2015* -
## Chemistry

When 0.655 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 107C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to significant

*asked by Anonymous on February 25, 2008* -
## econ

The unemployment rate is determined by individuals filing for unemployment assistance from the government or other similar programs, such as disability. If 2 million of those individuals decided to stop looking for work, they would necessarily stop filing

*asked by sue on June 21, 2019* -
## english

please proofread my contrast and comparision paper Another War for the People of the United States Although the Air Force, Navy, and Army were different in the 1940's and the 200's show that, even though technology and communication have improved,

*asked by austin on November 18, 2012* -
## Chemistry

If 45.3 mL of liquid CS2 and 7.62 L of gaseous O2 measured at STP are reacted stoichiometrically according to the balanced equation, how many milliliters of liquid CS2 remain? CS2(l) + 3O2(g) -> CO2(g) + 2SO2(g) Molar Mass (g/mol) CS2 76.143 O2 31.998

*asked by Lisa on April 20, 2010* -
## Chemistry

Cocaine is a non-electrolyte that has a molecular weight of 303.4 g/mole. How many grams must be dissolved in 25.0 mL of Chloroform (density = 1.484 g/mL) to raise its boiling point to 65.5 Celsius? The boiling point of pure Chloroform is 61.2 Celsius. Kb

*asked by Alyssa on February 26, 2012* -
## chemistry

I balanced an equation between lead(II) nitrate and potassium sulfate and ended up with: Pb(NO3)2 + K2SO4 --> PbSO4 + 2 KNO3 If 0.87 moles of potassium sulfate react with an excess amount of lead(II) nitrate, how many moles of lead(II) sulfate would be

*asked by Nicholas on April 2, 2012* -
## Math

If Leah is 6 yr.s older than sister, Sue, & John is 5 yrs. older than Leah, and the total of their ages is 41. How old is Sue? Still having problems setting the problem up. Have hit a brick wall. Any suggestions? Have you tried algebra? Let J = John's age

*asked by Katie on March 5, 2007* -
## Physics

A 0.20-kg ball on a string is whirled on a vertical circle at a constant speed. When the ball is at the three o'clock position, the string tension is 16 N. Find the tensions in the string when the ball is at twelve o'clock and at the six o'clock positions.

*asked by Sanjna on October 6, 2009* -
## Physics

A comet orbits the Sun with a period of 72.0 yr. (a) Find the semimajor axis of the orbit of the comet in astronomical units (1 AU is equal to the semimajor axis of the Earth's orbit). (b) If the comet is 0.60 AU from the Sun at perihelion, what is its

*asked by James on July 18, 2012* -
## OChem

A mixture of fluorene and benzoic acid is dissolved in diethyl ether and mixed thoroughly with an aqueous solution of NaOH. After the layers separate, what will each of the layers contain? Label the layers. Indicate the main components, not species that

*asked by David on October 20, 2011* -
## english

While there is little evidence that the federal capital punishment system treats minorities unfairly, some may argue that the death penalty systems in certain states may be discriminatory. One such state is Maryland. In May 2001, then-Governor Parris

*asked by Mary on October 13, 2009* -
## Science - Biology - Ecology

I desperately need help on the iron hypothesis and related facts: Where are HNLC waters found and why? (a map would be nice) What is the fate of the organic carbon fixed by photosynthesis in the deep ocean? How does iron enter the ocean eco-system? What is

*asked by Robert on November 12, 2007* -
## Science

When elemental sulfur,S8,is heated with AgF,a gas forms that contains only sulfur and fluorine. The following tests were done to characterize this gaseous product. *The density of the gas was found to be 0.807g/L at 152mmHg and 35 degrees celsius. *When

*asked by anonymous on November 10, 2009* -
## Algebra

A baseball player's batting average is the number of hits the player has divided by the number of at-bats. At the beginning of a game, a player has a batting average of .360. During the game, the player gets 3 hits during 5 at-bats, and his batting average

*asked by Amie on January 16, 2013* -
## writing inequalities

you must have an average score of at least 80 to get a B on your report card. You have scores of 61,70,99, and 70. What is the minimium score you must get on the last test to get a B on your report card? the minimum score you can make and receive an 80 is

*asked by Anonymous on March 18, 2007* -
## math

1. A baseball diamond is actually a square, 90 feet on each side. What is the distance from third base to first base? 2. The equation gives the distance, D, in miles that a person can see to the horizon from a height, h, in feet. a) Solve this equation for

*asked by summer on August 30, 2010* -
## math

Help me solve this!! Joeys father stops at the gas station to buy gas. The car has a 16 gallon tank, and the feul gauge says there are 3-4 of a tank of gas. If joeys dad buys 6 gallons of gas, what fraction of the tank will the car´s feul gauge read??

*asked by tayler on December 12, 2007* -
## math

The formula for the lateral surface area of a cone is A=πr√(h^2+r^2). (A)Solve for r and simplify the result, if possible. (B) If the lateral surface area of a cone is 10 square feet and the height is 16 inches, what is the radius of the cone in inches?

*asked by Andrea on April 24, 2018* -
## math

1. A baseball diamond is actually a square, 90 feet on each side. What is the distance from third base to first base? 2. The equation gives the distance, D, in miles that a person can see to the horizon from a height, h, in feet. a) Solve this equation for

*asked by summer on September 4, 2010* -
## Physics(Please respond)

There is a rod that is split into two sections. The left side is copper with value of 390, temp of 100 degrees c and the length is 2m. The right side is silver, 420, temp 20 degrees celsuis, and length 1m. I need to calculate the temperature. 390 X 1 X

*asked by Hannah on June 15, 2012* -
## Physics(Please check)

There is a rod that is split into two sections. The left side is copper with value of 390, temp of 100 degrees c and the length is 2m. The right side is silver, 420, temp 20 degrees celsuis, and length 1m. I need to calculate the temperature. 390 X 1 X

*asked by Hannah on June 13, 2012* -
## Chemistry

Consider 2 separate solutions, one of a weak acid HA and one of HCL. Assume that you started with 10 molecules of each. Draw a picture of what each solution looks like at equilibrium. Ok to my very limited knowledge on this subject so far, a weak acid at

*asked by kevin on October 11, 2011* -
## Science

You are given 10 µL of a DNA stock solution that has 1.0 µg target DNA/µL. The target DNA molecule is 2.9 kb in length. Describe a set of serial dilutions that would yield a standard curve with the following concentrations: 2 x10^7 copies/µL, 2x10^6

*asked by Meena on April 7, 2014* -
## 2 balloons and a doubled distance (physics)

EARLIER SOMEONE POSTED: "Two like-charged balloons, placed at a distance of .5 meters, experience a repulsive force of .32 N. What is the force if the distance between the two balloons is doubled? If you use Coulomb's Law, the equation used to find .32 N

*asked by help! on February 27, 2011* -
## ELA

Video Presentation Permission Form Mary O'Dell Video Broadcast Permission Form Willow High School Teacher’s Name: __________________________ Date: __________ Name of Video:____________________________________________ Video rating - G PG PG-13 R NR (not

*asked by Dolphin on February 15, 2018* -
## 8th grade math - Variations

Can you check the following, please? 1. Two minutes after a skydiver opens his parachute, he has descended 1900 feet. After 5 minutes, he descended 4750 feet. If distance varies directly with the time, at what rate is skydiver descending? Ans: to find unit

*asked by Alexis on February 15, 2016* -
## French

Hi, I did a paragraph of what I will do this weekend. The problem is, I'm not sure how to correctly put my verb tenses in the future. Can someone please help? Thanks in advance! In English: This weekend, I will catch up on psychology homework. I will also

*asked by Anonymous on April 26, 2019* -
## Human Services

Creating a Budget Various budget approaches play an important role in resource allocation in human service organizations. You are the executive director for a local government workforce agency that focuses on providing career- and work-related skills. The

*asked by Angel on February 1, 2012* -
## Physics repost

FM radio stations use radio waves with frequencies from 88.0 to 108 MHz to broadcast their signals. Assuming that the inductance has a value of 4.60 x 10^-7 H, determine the range of capacitance values that are needed so the antenna can pick up all the

*asked by Mary on October 17, 2007* -
## Physical Science

A donkey pulls a cart(c) with a mass of 240kg, attached to a log of wood(w), with a mass of 80kg on a horizontal road. W is tied to the back of c by means of non elastic rope. The donkey applies a foce of 170N on Cart c and the system accelerates at 0,3m

*asked by Taryn on March 15, 2007* -
## art history

Hello! I just need help in confirming/denying my own answers. For wrong answers, any assistance would be appreciated. These are study questions for an upcoming test so guidance would be EXTREMELY helpful. THANK YOU THANK YOU THANK YOU :) 1. The Sanctuary

*asked by kailey on November 17, 2014* -
## computers

1. It is important to include voice and point of view in writing because (1 point) A. It helps the reader understand the characters feelings and emotions B. It adds more words to the story C. It makes the information stand out D. It makes the story more

*asked by Bob on March 3, 2014* -
## Geography

How do you think the existence of nearly 3,000 ethnic groups and 800 languages affect life in countries south of the Sahara? The countries south of the Sahara show more diversity and variety of culture than anywhere in the world. This region speaks more

*asked by Chandler on July 6, 2011* -
## MATH Graphing Domain

Consider the linear function with equation y = 3x + 5. Sketch the graph of the linear function on the grid. h t t p : //img402 . imageshack . us/img402/1466/picture38c . j p g Here is a picture of the graph, and this is how I did it. h t t p : //img9 .

*asked by Anonymous on September 13, 2011* -
## Quadratic Equations

Ok, I am supposed to find out what the variables are by factoring and finding square roots. I couldn't find the right factors of a and c that added up to b in the equation (did that make sense?). Please help me find them! TYVM -5n+6n^2-4=0 I know

*asked by Emily on February 8, 2007* -
## Physics

A 0.40kg block is held against a compressed spring of stiffness 68.2N/m and compression 0.64m parallel to a 24 degree incline that is 1.27m long. The coefficient of kinetic friction between the block and the incline is 0.34. The external force holding

*asked by Alphonse on October 15, 2012* -
## Chemistry

Reposting with correct information..Carbon tetrachloride (CCl4) and benzene (C6H6) form ideal solutions. Consider an equimolar solution of CCl4 and C6H6 at 25°C. The vapor above this solutionis collected and condensed. Using the following data, determine

*asked by Minx on December 8, 2011* -
## science

Rates of Reactions I am conducting a experiment on increasing the rate of a reaction by increasing the surface area. For this I am reacting hydrochloric acid and marble chips. Variables:- -Independent: the mass of marble chips -Dependent: The

*asked by Heena on November 23, 2014* -
## Chemistry

Rates of Reactions I am conducting a experiment on increasing the rate of a reaction by increasing the surface area. For this I am reacting hydrochloric acid and marble chips. Variables:- -Independent: the mass of marble chips -Dependent: The volume of gas

*asked by Anonymous on November 22, 2014* -
## Chemistry

Rates of Reactions I am conducting a experiment on increasing the rate of a reaction by increasing the surface area. For this I am reacting hydrochloric acid and marble chips. Variables:- -Independent: the mass of marble chips -Dependent: The volume of gas

*asked by Anonymous on November 22, 2014* -
## Math

My answers 1.A 2.C 3.D 4.A 5.A 6.D 7.B 8.D 9.D 10.C 1. Write the following ratio in simplest form: 32 min:36 min (1 point) 8:98:3632:9128:144 2. Marie saved $51. On Wednesday, she spent $8 of her savings. What ratio represents the portion of her total

*asked by Bill Cipher on December 2, 2016* -
## Math

There are three distinct ways to add four positive odd numbers to obtain 10: 1 + 1 + 3 + 5 = 10 1 + 1 + 1 + 7 = 10 1 + 3 + 3 + 3 = 10 Here, distinct means that changing the order of the numbers on the left-hand side of an equation does not count as a new

*asked by SkaterGirl on December 5, 2010* -
## Algebra

State the possible number of imaginary zeros of g(x)= x^4+3x^3+7x^2-6x-13 this is how far Ive gotten:there are 4 zeros,3 positive and 1 negative If you've found four real zeroes, then there are no imaginary zeroes. You can also see that there are no

*asked by Marissa on August 10, 2007* -
## Chemistry Problem

At 25 oC, Kc = 0.145 for the following reaction in the solvent CCl4. 2BrCl Br2 + Cl2 A solution was prepared with the following initial concentrations: [BrCl] = 0.0482 M, [Br2]= 0.0307 M, and [Cl2]= 0.0277 M. What will their equilibrium concentrations be?

*asked by Peter on March 8, 2013* -
## AP Chem

At 25 oC, Kc = 0.145 for the following reaction in the solvent CCl4. 2BrCl Br2 + Cl2 A solution was prepared with the following initial concentrations: [BrCl] = 0.0482 M, [Br2]= 0.0307 M, and [Cl2]= 0.0277 M. What will their equilibrium concentrations be?

*asked by Peter on March 8, 2013* -
## physics

A 12 kg mass on a horizontal friction-free air track is accelerated by a string attached to a 100 kg mass hanging vertically from a pulley as shown. Compare the accelerations when the masses are interchanged, that is, for the case where the 100 kg mass

*asked by naomi on June 3, 2007* -
## Chemistry

You want to neutralize 6 mol of sulfuric acid with 6.0 M sodium hydroxide. How much 6.0 M sodium hydroxide must you add to react exactly with the sulfuric acid? 2NaOH(aq)+H2SO4(aq)-->2H2O(l)+Na2SO4(aq) 2 moles sodium hydroxide for every 1 mol sulfuric

*asked by Kierstin on May 7, 2016* -
## Physics

A plane drops a bomb from an altitude of 10,000m. a. Determine the time the bomb is in the air. b. Determine the velocity the bomb would have right before it hits the ground. c. Before the bomb is launched the plane has a horizontal velocity of 92m/s.

*asked by Alex on November 19, 2012* -
## Math

1. Given the following polynomial: 2x^2 + 7x - 15 = 0 Check all that apply. The value of the discriminant is 169. There are 2 real roots. There are 2 irrational roots. The graph intersects the y-axis twice. The parabola is directed

*asked by Anonymous on June 21, 2017* -
## physics

4 packets of charges are arranged in a circle. Each packet is 90 degrees from each other. Each packet consists of 22 elementary charges associated with the nucleus of two sodium atoms. A test charge is placed in the center of the circle of packets. The

*asked by Pat on March 19, 2018* -
## chemistry

Calculate the number of grams of reactant left over when 28.35 grams of silver reacts with 50.0 liters of air at STP which is 20.9476 % oxygen by volume. The density of air at STP is 1.292 g/L. attemt at a solution: m = dv = 64.6 g of air moles silver

*asked by jason on November 7, 2008* -
## Budget Matrix

Creating a Budget Various budget approaches play an important role in resource allocation in human service organizations. You are the executive director for a local government workforce agency that focuses on providing career- and work-related skills. The

*asked by Jacilyn Troeger on May 7, 2009* -
## Human Resources

Creating a Budget Various budget approaches play an important role in resource allocation in human service organizations. You are the executive director for a local government workforce agency that focuses on providing career- and work-related skills. The

*asked by Dawn on June 30, 2013* -
## Secondary Math

Fill in the empty spaces to complete the puzzle. In any row, the two left spaces should multiply to equal the right-hand space. In any column, the two top spaces should multiply to equal the bottom space. ________| - 3 | ___________ 3 | -5x+1 |-15x+3

*asked by Rose Nicol on October 24, 2014* -
## Accounting-balance sheet and income statement

Argo Sales Corporation has in recent years maintained the following relationships among the data on its financial statements: Gross profit margin 40% Net profit margin 10% Rate of selling expenses to net sales 20% Accounts receivable turnover 8 times per

*asked by Peace on November 30, 2007* -
## physics

A Carnot engine is operated between two heat reservoirs at temperatures 520 K and 300 K. (a) If the engine receives 6.45 kJ of heat energy from the reservoir at 520 K in each cycle, how many joules per cycle does it reject to the reservoir at 300 K? (b)

*asked by Jen on December 2, 2007* -
## physics

A Carnot engine is operated between two heat reservoirs at temperatures 520 K and 300 K. (a) If the engine receives 6.45 kJ of heat energy from the reservoir at 520 K in each cycle, how many joules per cycle does it reject to the reservoir at 300 K? (b)

*asked by Jen on December 2, 2007* -
## chemistry

For the reaction H2(g) + I2(g) ↔ 2 HI(g), you have the initial concentrations [H2] = 0.15 and [I2] = 0.05. Keq for the reaction at this temperature is 4.5 x 10-6. Make a reaction table. Include rows for initial concentration, change in concentration, and

*asked by Anonymous on April 24, 2012* -
## math

marcy has a total of 100 dimes and quarters. if the total value of the coins is $14.05, how many quarters does she have? You need two equations to substitute into each other. You need one for the total number of coins, and one for the amount. d=# of dimes

*asked by help me on April 26, 2007* -
## chemistry

For the reaction H2(g) + I2(g) ↔ 2 HI(g), you have the initial concentrations [H2] = 0.15 and [I2] = 0.05. Keq for the reaction at this temperature is 4.5 x 10-6. Make a reaction table. Include rows for initial concentration, change in concentration, and

*asked by Anonymous on April 23, 2012* -
## maths

the load which a crame can lift up is directly proportional to the mass and inversely proportional to the height through which the load is to be lifted.if a load of 40+ and mass of 175gm is lifted through height from what load will be carried through

*asked by chinaemerem on April 25, 2017* -
## Math - extreme values

Identify the critical points and find the extreme values on the interval [-1,-5) for f(x)=cosx+xsinx+3 I've taken the derivative which gives me f'(x)=xcos(x). I know I have to solve to get the critical points and then plug in the critical points that are

*asked by Anonymous on March 9, 2017*

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