Thursday
December 18, 2014

Posts by Chris


Total # Posts: 2,259

chemistry/help
In solid form, what element has the lowest density? Which has the highest density? -Hydrogen is the lowest density solid 2.which element has the highest? can you help?
June 3, 2012

chemistry/help
In solid form, what element has the lowest density? Which has the highest density? 1. Hydrogen is the lowest density solid 2.which element has the highest?
June 3, 2012

chemistry / help please
What is the name of: ZnNO3, of (NH4)2O, of Rb3PO4, or NH4ClO4?
June 3, 2012

PHYSICS
An applied force accelerates a 50-kg crate along a frictionless floor from rest to 5 m/s.The work performed by this force is most nearly 125 J 250 J(x) 500 J 625 J 1,250 J Can someone please explain this to me and help? I thought it was 250 J but my calculation was wrong.
June 2, 2012

world history
Why did Queen Mary imprison her half -sister Elizabeth? a-She had converted to Calvinism b- She had led an uprising c- She was beautiful d- She was popular and protestant answer: D correct?
June 1, 2012

learing
D.
May 29, 2012

chemistry
the chemical substance called flavin (an anthocyanin) is it write?
May 28, 2012

chemistry
What chemical substance is in red cabbage which serves as an indicator for acids and bases?
May 28, 2012

world history
Can you tell me 3 ways that the conclusion of WW1 leads into directly into WW2? thank you.
May 27, 2012

PHYSICS PLEASE HELP
A particle travels counterclockwise around the origin at constant speed in a circular path that has a diameter of 2.50 m, going around twice per second. Point Q is on the path halfway between points P and R, which lie on the x axis and the y axis, respectively. State the ...
May 27, 2012

algebra
In a canoe race, a team paddles downstream 480 m. in 60 s. The same team travels up stream in 80 s. Find the team's rate in still water and the rate of the current. Please show how the equation is set up to solve
May 26, 2012

algebra
A jet travels at a rate of 798 mi/hr. with the wind. Going against the wind, the jet travels at a rate of 762 mi/hr. What is the rate of the jet in still air and the the rate of the wind? please show how the equation should be set up
May 26, 2012

ALGEBRA
Jim paddles a canoe upstream at a rate o 3mi/hr. Traveling downstream, he travels at 8 mi/hr. What is his rate in still water and what is the rate of the current? PLEASE SHOW THE SOLUTION EQUATION
May 26, 2012

math
5/10=3/5
May 26, 2012

Physics :)
The vector F is (12.0, −3.00) in rectangular notation. What is this same vector in polar notation? Express the angle as a positive number between 0° and 360°. I got 12.4, just can't get the angle.
May 25, 2012

spanish/help pleaseeeee
1-trabajaba 2- iban 3-teniamos 4- era 5-cuidaban 6- jugaba 7- nos divertiamos. complete the paragragraph. Cuando yo------ chica,mi vida era muy diferente.Yo nunca----,solo-------con mis amigos. Mis padres-----al trabajo y mis abuelos me-----.Nosostros no -----un televisor, por...
May 24, 2012

finance
An investor estimates that next year’s sales for New World Products should amount to about $75 million. The company has 2.5 million shares outstanding, gener- ates a net profit margin of about 5% , and has a payout ratio of 50% . All figures are expected to hold for next ...
May 24, 2012

Business Accounting
The answer is d
May 24, 2012

algebra
Convert the following credit card rate to the APR. Nebraska, 0.04110% daily rate. (Round your answer to the nearest whole number.)
May 20, 2012

ALGEBRA
Calculate the monthly finance charge for the following credit card transaction. Assume that it takes 10 days for a payment to be received and recorded and that the month is 30 days long. Assume 365 days in a year. (Round your answer to the nearest cent.) $3,000 balance, 21% ...
May 20, 2012

Odd or Even function?
f(x)=x^3 + sin x So far.. I've heard it's neither.. But how? Thanks
May 16, 2012

math
if an office has an area of 120 sqare feet and a perimeter of 44 feet. what are the dimensions of this office.
May 14, 2012

math
a pie is cut into 8 equel slices. if a person wants 0.75(pie sign) centimetre of crust, about how many pieces should they take?
May 12, 2012

adv functions
a pie is cut into 8 equel slices. if a person wants 0.75(pie sign) centimetre of crust, about how many pieces should they take?
May 12, 2012

Chemistry
We apply the same amount of energy to 10.0-g samples of aluminum, and silver which begin at the same temperature.Rank the metals from highest to lowest temperature after the heat is applied.
May 10, 2012

math
is that just the units?
May 8, 2012

math
what is rev?
May 8, 2012

math
The CD player in your computer rotates a disc at 7200rmp. Determine its velocity in: a)degrees per second b)radians per minute
May 8, 2012

math
1.A child chooses a horse to ride on a carousel. The horse is located 9m from the centre of the carousel. If the ride turns through an angle of 128pie/27 determine the length of the arc travelled by the horse.
May 8, 2012

Grammar
Thank you so much!!
May 8, 2012

Grammar
Hello! I am doing a presentation on the green sea turtle. I unsure what part of "green sea turtle" should be capitalized if at all. I am seeing it multiple ways online. Any advice would be greatly appreciated. Thanks!
May 8, 2012

math
Find a six-digit even number containing no zeros and no repeating digits in which the first digit is four more than the second digit, the third digit is one less than the sixth digit, and the fourth and fifth digits when read as a single number equal the product of the first ...
May 7, 2012

Algebra
12(2nd power)/24(2nd power)/6(2ndpower)= Simplify I got 144/576/36 is this right?
May 6, 2012

psychology Help
How did Erik Erikson progress through the hierarchy of needs difined in Maslows theory. So for physiological needs-These include the most basic needs that are vital to survival, such as the need for water, air, food, and sleep. How/what would be an example of Eriks process in ...
May 6, 2012

psychology HeLp
How did Erik Erikson progress through the hierarchy of needs difined in Maslows theory. So for physiological needs-These include the most basic needs that are vital to survival, such as the need for water, air, food, and sleep. How/what would be an example of Eriks process in ...
May 6, 2012

psychology
What motivated Erik Erikson to achieve in life? Would his own personal experiences in life be considered a motivation? Example: Changing his last name to make his own identity, his 8 phychosocial stages...
May 6, 2012

Psychology
Is Maslow's hierarchy universal? Do you see it applicable in other cultures? After reading/researching Maslow's theory of motivation we all share a compelling need to "move up", to improve ourselves, and than we become self-actualized. So to me this would not...
May 6, 2012

Physics
A massless string is wrapped around a cylinder of mass 0.400 kg and radius 0.100 m. The string is attached to the ceiling. The cylinder is released. As it falls, the string unwinds. What is the magnitude of the acceleration of the cylinder as it falls in m/s2? A.3.27 B.6.54 C....
May 4, 2012

Physics
A pendulum is composed of a mass m suspended from the ceiling by a massless string of length L. If the mass is pulled back so that it is raised an amount L/4 and then released, what is the tension on the string at the bottom of the swing? A.3 mg B.4 mg C.2 mg D.5/2 mg E.3/2 mg...
May 4, 2012

geometry
how to write an equation in slope intercept form of the line through point P(8,20 with slope 4?
May 3, 2012

math
for the equation y = 1x - 25, will the value of y increase or decrease as x increases?
May 2, 2012

algebra
2x+8y-8z-22 x+2y-2z=3 5x+7y+z=-13 solve by gaussian elimination
May 1, 2012

algebra
a can of soda at 80 F is placed in a refrigerator that maintains a constant temperature of 37 F the temperature T of the soda t minutes after it is placed in the refrigerator is given by T(t)=37+43e^-0.058t find temp to the nearest degree of the soda after 7 minutes when to ...
May 1, 2012

Math
can you guys help me with this one problem? Thanks a bunch! Problem: Draw a circle whose center is at (1,2) so that the point (1,5) is a point on the circle. What is the circumference of the circle. I don't get this so please help!!!
April 25, 2012

ALGEBRA
x(x+2)=528 x^2+2x=528. At this point complete the square (x+1)^2=529 x+1=+/-square root 529 x=-1+/-23 The two solutions are 22,-24. Remember that is wants even integers. 22(24)=528
April 25, 2012

Transportation and Security
what are potential vulnerabilities of airplanes?
April 22, 2012

transportation and cargo
would these agencies have the biggest impact on global transportation security post 9/11. • TSA • Federal Emergency Management Agency (FEMA) • United States Citizenship and Immigration Services (USCIS) • U.S. Customs and Border Protection (CBP) • U.S. ...
April 22, 2012

transportation and cargo security
Thank you.
April 22, 2012

transportation and cargo security
what agencies had the biggest impact on global transportation security post 9/11. would this be like... • TSA • Federal Emergency Management Agency (FEMA) • United States Citizenship and Immigration Services (USCIS) • U.S. Customs and Border Protection (CBP...
April 22, 2012

Microeconomics
The answer is $4,000
April 22, 2012

chemistry
so d then
April 21, 2012

chemistry
e?
April 21, 2012

chemistry
A reaction will be nonspontaneous under all conditions when a. delta G is negative b. delta H is negative and DS is positive c. delta H is positive and DS is negative d. delta H is positive independent of the value and sign of DS e. delta S is positive independent of the value...
April 21, 2012

chemistry
not getting right answer how do you set it up?
April 21, 2012

chemistry
d?
April 21, 2012

chemistry
Calculate the value of ()Go for the following reaction , given the standard free energies of formation listed below each ion. Ag(SO3)_2^3- -> Ag+ + 2SO32- delta Gf, kJ/mol = -943 +77 -497 a. - 1860 kJ b. – 128 kJ c. + 26 kJ d. - 369 kJ e. + 523 kJ help no idea
April 21, 2012

chemistry
delta G for a reaction can be calculated from 1. delta Gf data 2. delta Hf and delta S data 3. equilibrium constants a. only 1 or 2 or 3 b. 1 & 2 only c. 1 & 3 only d. 2 & 3 only e. 1, 2 & 3 help
April 21, 2012

chemistry
delta G for a reaction can be calculated from 1. delta Gf data 2. delta Hf and delta S data 3. equilibrium constants a. only 1 or 2 or 3 b. 1 & 2 only c. 1 & 3 only d. 2 & 3 only e. 1, 2 & 3 help
April 21, 2012

chemistry
Free energies of formation are a. always positive b. always negative c. never zero d. measured at 298K e. more than one response above is correct help thinkin a though
April 21, 2012

chemistry
Nitrosyl chloride (NOCl) decomposes at high temperature. The equation is 2 NOCl (g) -> 2 NO (g) + Cl2 (g) at 227C Using delta H = 81.2 kJ and delta S = 128 J/K, calculate the value of the equilibrium constant for this reaction. a 1.60 X 10-2 b. 2.1 X 10-7 c. 62.8 d. 4.9 X ...
April 21, 2012

chemistry
still not getting ans
April 21, 2012

chemistry
the new delta s= .128 81.2-(227x.128)=52.144 52.144=-rtlnk what is rt?
April 21, 2012

chemistry
Nitrosyl chloride (NOCl) decomposes at high temperature. The equation is 2 NOCl (g) -> 2 NO (g) + Cl2 (g) at 227C Using delta H = 81.2 kJ and delta S = 128 J/K, calculate the value of the equilibrium constant for this reaction. a 1.60 X 10-2 b. 2.1 X 10-7 c. 62.8 d. 4.9 X ...
April 21, 2012

chemistry
For a particular reaction delta G is more negative than delta H. This means that a. delta S is zero. b. deltaS is negative c. delta S is positive d. delta S is negative if delta H is positive. e. delta S is negative if delta H is negative. i thought it was c?
April 21, 2012

chemistry
d?
April 21, 2012

chemistry
how do i set this up?
April 21, 2012

chemistry
The standard molar entropy value of N2 (g) is 191.5 J/K-mol, of O2 (g) is 205.0 J/K-mol and of NO2 (g) is 240.0 J/K-mol. From these values we can calculate the Delta S for the reaction N2 (g) + 2 O2 (g) produces 2 NO2 (g) to be a. – 156.5 J/K b. 636.5 J/K c. 15.5 J/K d...
April 21, 2012

chemistry
so d?
April 21, 2012

chemistry
q1=c q2 what am i looking for?
April 21, 2012

chemistry
q1)Which entries below should have the highest standard molar entropy? a. SiCl4 (s) b. CCl4(l) c. CCl4 (g) d. SiCl4 (l) q2) For the above, which should have the next highest standard molar entropy?
April 21, 2012

math
Area A sequence of smaller squares is formed by connecting the midpoints of the sides of a larger square. (a) If the area of the largest square is 1 square unit, determine the first five terms of a sequence that describes the area of each successive square. (b) Use a formula ...
April 20, 2012

math
Amit investment $750 at 8.2% per year and $1,300 at 4.9% per year.Both investments earn simple intrest.Whoch investment earns more simple intrest in a year? Show your work.
April 17, 2012

Transportation and Cargo Security
This is what I have so far... We have a strong and efficient transportation system which provides businesses with access to materials and markets, and provides people with access to goods, services, recreation, jobs, and other people. The U.S. transportation system includes ...
April 15, 2012

Transportation and Cargo Security
THIS IS THE FULL QUESTION I AM ASKED TO DO. Identify an asset such as an airport or a shipping company within the global transportation system. Develop and describe a security system that you feel would be most appropriate to protect the assets of the organization selected by ...
April 15, 2012

Transportation and Cargo Secuirty
THIS IS THE FULL QUESTION I AM ASKED TO DO. Identify an asset such as an airport or a shipping company within the global transportation system. Develop and describe a security system that you feel would be most appropriate to protect the assets of the organization selected by ...
April 15, 2012

Transportation and Cargo Secuirty
So I could put Austin Straubel International Airport at Green Bay
April 15, 2012

Transportation and Cargo Secuirty
Identify an asset such as an airport or a shipping company within the global transportation system. What does this mean? What is an asset of an airport or shipping company?
April 15, 2012

transportation and cargo security
I think I am thinking too much into this assignment. I was thinking thats what to write but than I second guess myself. Thank you for your help!
April 15, 2012

transportation and cargo security
Im chose to write about Air travel and I don't understand what it is ment by the public utilization of the system.
April 15, 2012

transportation and cargo security
Research the various U.S. transportation systems and identify the appropriate one to use for your case study. Research the selected system carefully and prepare a brief summary. The summary should include the following: An introduction to the system. Public utilization of the ...
April 15, 2012

division of decimals
.160416 divided by 4
April 12, 2012

Statistics
Suppose that the scores of architects on a particular creativity test are normally distributed. Using a normal curve table, what percentage of architects have Z scores:
April 9, 2012

Honors Chemistry
1. What is the pH of a solution whose [H3O+] is 1 X 10^ -5 M? 2. What is the [H3O+] concentration of a solution with a pH of 9? 3. What is the pH of a solution whose [H3O+] concentration is 3 X 10^-3 M? 4. What is the pH of a solution with a [H3O+] concentration of 1 X 10^ -12...
April 6, 2012

Math
A warranty identification number for a certain product consists of a letter of the alphabet followed by a seven-digit number. How many possible identification numbers are there if the first digit of the seven-digit number must be nonzero?
April 3, 2012

government
B: Tort law definition: "A civil wrong, other than a breach of contract, which the law will redress by an award of damages."
April 2, 2012

math
there are 5 balls in a bag.3 are white and 2 are blue. what part is white?
April 1, 2012

chemistry
A compound weighing 115 g contains 68.3 g of carbon, 13.2 g of hydrogen, 15.9 g of nitrogen, and some amount of oxygen. What is the mass percent of oxygen in the compound?
March 30, 2012

statistics
Assume that a sample is used to estimate a population proportion p. Find the margin of error. 95% confidence; n = 250, x = 130
March 27, 2012

statitics
Suppose that a sample of n = 1,600 tires of the same type are obtained at random from an ongoing production process in which 8% of all such tires produced are defective. What is the probability that in such a sample 150 or fewer tires will be defective
March 27, 2012

statitics
Suppose that a sample of n = 1,600 tires of the same type are obtained at random from an ongoing production process in which 8% of all such tires produced are defective. What is the probability that in such a sample 150 or fewer tires will be defective
March 27, 2012

statistics
Suppose that SAT scores among U.S. college students are normally distributed with a mean of 450 and a standard deviation of 150. What is the probability that a randomly selected individual from this population has an SAT score at or below 600?
March 27, 2012

statistics
Jack’s ACT score is 30. Jason’s SAT score is 950. Who did better? The mean SAT score is 1000 with a standard deviation of 100 SAT points. The mean ACT score is 22 with a standard deviation of 3 ACT points
March 27, 2012

Calculus
Find the volume of the solid formed when the area bounded by x^2-y^2=9, y=x+5, and the x axis is rotated about x=1.
March 27, 2012

Math
Boys have to be either 3, 6, 9, or 12 because you have to be able to take 2/3 of them and get a whole number. The number of girls for each of these cases is 10, 7, 4, 1. You have to be able to take 1/4 of this number and also get a whole number, 4 is the only one that works so...
March 27, 2012

Math 8
6 1/2 joules. particles looses 0.08 joule of energy every 15 seconds what will energy after 4 minutes. Would this be 6 1/2 - 1.28 divide by 4
March 25, 2012

Math 8
how do you dilate a figure under 1
March 25, 2012

Math
6 divided by 1.00 will tell you how much each one is.
March 25, 2012

chemistry
A 3.00- flask is filled with gaseous ammonia, . The gas pressure measured at 28.0 is 2.35 . Assuming ideal gas behavior, how many grams of ammonia are in the flask?
March 24, 2012

chemistry
A 3.00- flask is filled with gaseous ammonia, . The gas pressure measured at 28.0 is 2.35 . Assuming ideal gas behavior, how many grams of ammonia are in the flask?
March 24, 2012

math
alex is x years old his sister is 3 years older , togerther their age is 57. what is the equation for this.
March 22, 2012

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