# Posts by kim

Total # Posts: 2,596

**Chemistry**

A 1.20g sample of benzoic acid is burned in excess of )2 in a bomb calorimeter immersed in 1300 g of water. The temperature of the water rises from 25 to 30.2 degrees C. The heat of combustion of benzoic acid is -26.4 kJ/g. The heat capacity of water is 4.18. What is the heat ...

*December 3, 2012*

**math**

The area of a table top can be represented by l× w where l is the length and w is the width.What is the area of the table top if l=60 in and w=40 in?

*December 1, 2012*

**7 grade math**

a helicopter blade spend 775 times in 3 mintues find the rate in revolutions per second

*November 27, 2012*

**English**

Identify the italicized phrase in the following sentence.For some reason,Vince didn't like falling in the mud puddle.

*November 26, 2012*

**Chemistry**

If the initial volume is 500. ml at a temperature of 30 C, at a constant pressure, what would the new volume be if the temperature was changed to 50 C?

*November 23, 2012*

**physics**

A snapshot graph of a travelling wave is shown. The wave is travelling to the right at 10.4m/s. What is the amplitude if the maximum displacement is 26.6cm and the total distance travelled by the wave is 18.4m?

*November 20, 2012*

**math**

P=$1000 r=7% t=8 compounded annually

*November 17, 2012*

**social studies**

according to the preamble of the constitution, give at least three reasons why the new constitution is being established?

*November 17, 2012*

**probability**

probability of choosing a red marble is 1/5 also white marble is 3/10 what is the blue marble probability?

*November 15, 2012*

**Chemistry**

If 32.6 g of aluminum is produced, how many moles of aluminum nitrate is reacted?

*November 13, 2012*

**Math**

How can you tell by looking at the coordinates of a point whether the point is on the x axis or the y axis?

*November 11, 2012*

**Math**

thanks for the help

*November 11, 2012*

**Math**

Don't understand the problem can somebody please help me The bottom of the rabbit cage is a rectangle with a perimeter of 118 inches. Let x be the cages width(in inches) and let y be its length (in inches). write an equation for the perimeter the find the intercepts

*November 11, 2012*

**reading**

son needs to use the word idioms in a sentence

*November 8, 2012*

**Chemistry**

Consider the reaction 2H2O(g) --> 2H2(g) + O2(g) deltaH = +483.6 kJ/mol at a certain temperature. If the increase in volume is 32.7 L against an external pressure of 1.00 atm, calculate deltaU for the reaction. (1 L * atm = 101.3 J)

*November 8, 2012*

**algebra**

The dimensions of a playground are 50 feet by 75 feet. You want to double its area by adding the same distance x to the length and width. Find x and the new dimensions of the playground.

*November 2, 2012*

**ENGLISH II HELP PLEASE!!**

pure,fresh real apple juice , packaged to deliver the freshnessof nature straight to you

*October 30, 2012*

**history**

What is a fertile crescent

*October 29, 2012*

**math**

How many equal line segments are needed to make a line of 30 triangles

*October 29, 2012*

**statistics**

determine whether the following formula is a probability distribution P(X)=X/20 for X=1,4,7 AND P(X)=X+0.1 for X=0.24,0.26,0.15

*October 27, 2012*

**statistics**

A lottery offers one $800 prize, one $400 prize, and ten $80 prizes. One thousand tickets are sold at $3 each. Find the expectation if a person buts two tickets. Assume that each ticket can win more than one prize.

*October 26, 2012*

**Please help with math!!**

thanks

*October 23, 2012*

**soicial studys help plz**

the one above me is correct thanks

*October 22, 2012*

**chem 1**

9.70 grams of nitrogen gas are allowed to react with 5.44 grams of oxygen gas. What is the maximum amount of nitrogen monoxide that can be formed? What amount of the excess reagent remains after the reaction is complete?

*October 21, 2012*

**chemiswtry**

in a lab there is a spill of 47.5ml of .500 mol/l NaOH how many grams of Sulfuric acid is needed to neutralizethe spill

*October 18, 2012*

**math**

Amy and Kim found a sale in a sporting goods store. Amy spent $33 on 2 pair of shorts and 3 packages of socks. Kim spent $27 on 1 pair of shorts and 5 packages of socks. How much does one of each item cost?

*October 10, 2012*

**physics**

A mass m1 = 10 kg on top of a rough horizontal table surface is connected by a massless cable over a frictionless wheel to a hanging mass m2 = 5 kg, as shown in the previous problem. In m2 falls 1 m from rest in 1.2 seconds, find the co-efficient of kinetic friction between m1...

*October 8, 2012*

**Finance**

(Bond valuation) A $1,000 face value bond has a remaining maturity of 10 years and a required return of 9%. "The bond's coupon rate is 7.4%. What is the fair value of this bond?

*October 7, 2012*

**Math**

Please find the next THREE numbers in the patterns and explain how you got them: 1) 5, 5/2, 5/4, 5/8, 5/16.... 2) 1, -3, 9, -27, 81... 3) 1/2, 1/2, 3/8, 1/4, 5/32... 4) -9, 101, -999, 10001, -99999...

*October 6, 2012*

**chemistry**

How many moles of Fe2S3 are produced from a 0.4g piece of Fe?

*October 3, 2012*

**ashford university**

i need ant 101 week2 quiz

*October 2, 2012*

**Maths**

How to do factorise ? What is Factorise ? Give me some examples ,please . Thank you !

*September 28, 2012*

**Chem**

Calculate the number of C atoms in 0.185 C6H14O.

*September 28, 2012*

**Pre-Algebra-math**

Mr.jones bought 20 yards of fencing to make pen for dog pen will be in rectangle shape, the fencing comes in 1 yard section, wants the MAXIMUM areafor his dog to run, what dimension will give the pen the biggest space for dog to run?? then what r the dimensions for the maximum...

*September 25, 2012*

**Pre-Algebra-math**

Mr.Jones bought 20 yards of fencing to make a pen for his dog, the pen will be in a retangle shape fencing comes in 1-yard sections,he want the biggest space possible for his dog to run. What are the dimensions of the maximum space of the pen he can get??

*September 23, 2012*

**northwest**

how many 2 1/4 inch pieces can be cut from 6 foot long tape?

*September 23, 2012*

**physics**

A projected space station consists of a circular tube that will rotate about its center (like a tubular bicycle tire) as shown in the figure . The circle formed by the tube has a diameter of about 1.1 km. What must be the rotation speed (revolutions per day) if an effect equal...

*September 22, 2012*

**chemistry**

drysol contains 5g of aluminum chloride hexahydrate in 60 ml of an alcohol base. what is the final strength of drysol

*September 20, 2012*

**math**

a rope is cut into two pieces. one has a length of 37 feet. if the other piece has a length of x what was the total lengh of rope in feet before it was cut?

*September 19, 2012*

**physics**

A high fountain of water is located at the center of a circular pool as shown in the figure below. Not wishing to get his feet wet, a student walks around the pool and measures its circumference to be 39.0 m. Next, the student stands at the edge of the pool and uses a ...

*September 14, 2012*

**physics**

A ladder 7.65 m long leans against the side of a building. If the ladder is inclined at an angle of 60.5° to the horizontal, what is the horizontal distance from the bottom of the ladder to the building?

*September 14, 2012*

**earth science**

shelf

*September 13, 2012*

**earth science**

The gently sloping shallow area that extends from the continental shore is the called the continental?

*September 13, 2012*

**physics**

A bullet is fired horizontally from the top of a cliff which is 750 meters high and hits the ground at a horizontal distance of 1660 meters. (Consider air resistance to be negligible

*September 11, 2012*

**physics**

Find the magnitude and relative direction (e.g., NE, NW, SE, SW) of the velocity of an airplane relative to the earth, if the velocity of the airplane relative to the air is 165 km/hr. south to north and the wind velocity is 65 km/hr. at an 50o angle from east to west.

*September 11, 2012*

**math**

Jansen purchased a lot that was 121 feet in width and 360 feet in length. If he wants to build a fence around the entire lot, how many feet of fence does he need?

*September 10, 2012*

**Business**

Analyze and compare both data sets using the data analysis and biases concepts from Chapter 11 of Sekaran & Bougie (2010). Compare only those categories that you find are significant to your analysis in demonstrating whether the US demographics based promotions can or cannot ...

*September 8, 2012*

**accounting**

yes

*September 8, 2012*

**physical**

a crate rest on a ramp that makes an angle of tangent with the horizontal.the coefficient of kinetic friction is 0.35 and the coefficient of static friction is 0.45.the inclination of the ramp is slowly increased.(a)find the angle at which the crate starts to slip down the ...

*September 6, 2012*

**Math**

thanks delilah!

*September 5, 2012*

**English**

What are some of the assimilation and marginality in the story Studs Terkel by Stephen Cruz?

*September 4, 2012*

**English**

What are some of the assimilation and marginality in the story Studs Terkel by Stephen Cruz

*September 4, 2012*

**improving vocabulary skills fourth edition**

Chaper 23 page 126. What do i do

*September 3, 2012*

**Math**

bill and amy want to ride their bikes from thier neighborhood to school which is 14.4 kilometers away. It takes Amy 40 minutes to arrive at school. Bill arrives 20 minutes after Amy. How much faster is Amy's average speed fro the entire trip?

*September 2, 2012*

**Physics**

A long jumper takes of at an angle of 20 degrees and a speed of 11.0 m/sec. The max height achieved is 0.722 meters an the max length is 7.94 meters. At what angle and speed would the jumper have to take off to get the same max length, but twice the max height?

*August 31, 2012*

**biochemistry**

A solution was prepared by dissolving 8.0g of solid ammonium sulfate (MW= 132.14, specific volume= 0.565ml/g) in 35ml (i.e 35g) of water. What is the final volume of the solution?

*August 30, 2012*

**prinicples of management**

Scenario: Assume you are the owner-driver of a truck, which transports vegetables overnight from the farmers in Florida to the markets in Atlanta. On the way back you haul whatever goods need transporting in the opposite direction. You have five employees in your office ...

*August 25, 2012*

**biology**

This is cheating! JUST LOOK AT THE NOTES THEY GIVE US! simple as that, trust me!

*August 24, 2012*

**management**

1A 2D 3B 4B 5C Would these answers be correct

*August 22, 2012*

**management**

1. Regarding management and leadership, which statement is most accurate? A. Leaders can be good managers, and good managers can be leaders. B. Leaders aren’t managers, and managers aren’t leaders. C. Leadership and management are entirely unrelated. D. Most ...

*August 22, 2012*

**math**

my present salary is $1,560.00. I was offered a new position at $8.60 per hour with 1 1/2 hrs pay for overtime after 40 hours of work per weeke. How man hours of overtime per week would I need to earn the $390.00 per week.

*August 21, 2012*

**math**

a square is made up of section a and section b. section a is 500 sq ft and section b is 1350 sq ft. what percent of the square is section a.

*August 21, 2012*

**Intermediate Algebra**

State the degree of the following polynomial: -2x4y + xy – y

*August 19, 2012*

**health**

Me too!

*August 11, 2012*

**health**

Actually the answer is B. Page 19: health(dot)gov/dietaryguidelines/dga2010/DietaryGuidelines2010(dot)pdf

*July 28, 2012*

**Math**

There are 6 pairs of black socks and 6 pairs of white socksWhat is the probability to pick a pair of black or white socks when 2 socks are selected randomly in darkness?M

*July 27, 2012*

**healthcare management**

œ Differences in communication processes used in crisis situations, including what you learned from the situations in the scenario and how you might incorporate that knowledge to improve health care communication strategies

*July 26, 2012*

**math**

what%is 234 of 450

*July 26, 2012*

**STATISTICS(NEED HELP PLEASE?)**

Consider the following set of data. (25, 6), (25, 51), (62, 34), (84, 15), (112, 57), (122, 14) (a) Calculate the covariance of the set of data. (Give your answer correct to two decimal places.) 40.17 (b) Calculate the standard deviation of the six x-values and the standard ...

*July 25, 2012*

**math grade 12**

2. An isotope of sodium has a half-life of 15 h. A sample of this isotope has a mass of 2 g. a. [2] Find the mass equation that remains after t hours. b. [1] Find the mass that remains after 5 hours, to the nearest hundredth. c. [2] How long, to the nearest hour, will the ...

*July 24, 2012*

**math advanced functions**

Canada’s Wonderland has a roller coaster named ‘Leviathan’. It boasts a maximum height of 93 m, 80⁰ drop, speeds of 148 kms and is 1673m long. At its maximum height Mr. Currie drops his gum from his mouth. The height of the gum can be given by the ...

*July 23, 2012*

**Geometry**

I don't know how to do this proof It is set up on a T chart In the figure below PQ = RS Prove PR=QS ______P________Q_____R________S______ Proof must be set up on a t chart starting with PQ=RS Given

*July 22, 2012*

**unversity of phoenx**

dicuss some positive steps you can take to manage debt. when managing personal debt, what methods have been most successufl for you?

*July 20, 2012*

**Chemistry**

A patient receives 3.0 ml of a solution containing technetium 99 for breast image. If the activity of the technetium 99 is 9.5 mCi/mL, what is the dose received by the patient?

*July 20, 2012*

**Updated Math Question**

The radius of circle A is 9 times greater than the radius of circle B. Which of the following statements is true? A.The area of circle B is 9 times greater than the area of circle A. B.The area of circle A is 9 times greater than the area of circle B C.The area of circle B is...

*July 18, 2012*

**Math**

The radius of circle A is 9 times greater than the radius of circle B. Which of the following statements is true?

*July 18, 2012*

**Math 120**

Graph the solution set to the inequality. 2x+3y>12

*July 15, 2012*

**Math 120**

If a force of 5 pounds stretches the spring 2 inches, find K. How far will 18 pounds stretch the spring

*July 15, 2012*

**Math-120**

If a force of 5 pounds stretches the spring 2 inches, Find K. How much force is necessary to stretch the spring 14 inches

*July 15, 2012*

**Geometry**

Write an equation of a line in slope intercept form that is parallel to y = 3x+6 and passes through the point (-10, 2.5). Do not use spaces and enter fractions as improper reduced fractions when needed.

*July 12, 2012*

**geometry**

Two rectangles are graphed on a coordinate plane, which number represents the scale used to enlarge Rectangle ABCD to Rectangle LMNO? Answer choices 1/2 1 and 1/2 2 4

*July 7, 2012*

**math**

Find the total investment and the interest earned when $2,500 is invested at 5% compounded semiannually for 3 years.

*July 6, 2012*

**humanities**

What are some of the ways in which modern culture is fatalistic in ancient greek sense

*July 5, 2012*

**humanities**

expressed values of a society

*July 5, 2012*

**humanities**

A brief story about a community that functions the way epics did in ancient cultures How does this story so? and what important things does it serve to ? explain?

*July 5, 2012*

**biology**

Both the description and the definition of ecology and its significance to you and the society

*July 3, 2012*

**Chemistry**

Idjk

*June 26, 2012*

**math**

find mean median and mode of 68, 79, 72 88 and 96

*June 23, 2012*

**Medical coding**

Neoplasms are evaluated by a grading scale in a system called A. staging. B. malignancy. C. sequencing. D. morphology.

*June 20, 2012*

**General Chemistry**

A container holds 3 gases: oxygen, carbon dioxide, and helium. The partial pressure of the three gases are 2.00atm, 3.00atm, and 4.00atm, respectively. What is the total pressure inside the container?

*June 20, 2012*

**General Chemistry**

A gas is collected and found to fill 2.85L at 25.0 degrees Celsius. What will be its volume at standard temperature?

*June 20, 2012*

**General Chemistry**

A cylinder with a movable piston contains 2.00g of helium,He, at room temperature. More helium was added to the cylinder and the volume was adjusted so that the gas pressure remained the same. How many grams of helium were added to the cylinder if the volume was chanded from 2...

*June 20, 2012*

**General Chemistry**

A tank of oxygen is under a pressure of about 4.00 x 10^3 kPa. Express this pressure in millimeters of mercury.

*June 20, 2012*

**General Chemistry**

At STP, a 5.00L flask filled with air has a mass of 543.251g. The air in the flask is replaced with another gas and the mass of the flask is 566.107g. The density of air is 1.29g/L. What is the gas that replaced the air?

*June 20, 2012*

**General Chemistry**

A 230.0mL sample of a 0.275 M solution is left on a hot plate overnight; the following morning the solution is 1.50M. What volume of solvent has evaporated from the 0.275 M solution? a)42.2 mL b)63.3 mL c)187.8 mL d)230 mL e)272.2 mL

*June 20, 2012*

**General Chemistry**

If a 14.05g sample of a gas occupies 10.0L at STP, what is the molar mass of the gas at 125 degrees Celsius?

*June 20, 2012*

**General Chemistry**

What volume of oxygen gas at STP is needed to react with 5.06 mol of C2H4, according to the following equation C2H4 + 3O2 ----> 2CO2 + 2H2O

*June 20, 2012*

**Marketing**

Compete the break even point in dollars. Selling price = $2.00, Variable cost = $1.00, Fixed cost = $150,000

*June 20, 2012*

**help please :)**

Jamal currently earns $20,000 a year in gross wages. On January 1, he is due to receive a 2% COLA. What will his gross income be after the COLA takes effect? A. $19,600 B. $20,100 C. $20,400 D. $24,000 i got C.

*June 14, 2012*