Friday
August 28, 2015

Posts by DiANA


Total # Posts: 775

psych
what are the psychoanalytic models? How have these models been used to explain human behavior? Which models do you feel is teh most effective explaining human behavior and why?
October 6, 2010

Business Communication
#11 B
September 30, 2010

psych
what does it mean to be empirical in the pursuit of knowledge? how dies this relate to the scientific method?
September 26, 2010

soil mechanics
a large soil sample obtained from a borrow pit has a wet mass of 26.50kg. the in place volume occupied by the sample is 0.013 m3. a small portion of the sample is used to determine the water content; the wet mass is 135g, and after drying in an oven, the mass is 117g. a) ...
September 19, 2010

Chemistry
Calculate the amount of water (in grams) that must be added to (a)5.00 g of urea (NH2)2CO in the preparation of a 16.2 percent by mass solution, and (b)26.2g of MgCl2 in the preparation of a 1.5 percent by mass solution.
September 19, 2010

Chemistry
Explain why ethanol is not soluble in cyclohexane. Also, how do you figure out whether something is polar or nonpolar?
September 19, 2010

chemistry
In the course of research, a chemist isolates a new compound with an empirical formula C3H3O2. 4.97 g of the compound when dissolved in 100. g of water produces a solution with a freezing point of −0.325°C. What is the molecular formula of the compound? (For water, ...
September 8, 2010

Chemistry
Consider a 0.70 M solution of Al(NO3)3 in water. What is the nitrate ion concentration in this solution, in units of moles/L?
September 8, 2010

chemistry
A solution that contains 55.0 g of ascorbic acid (Vitamin C) in 250. g of water freezes at −2.34°C. Calculate the molar mass (in units of g/mol) of the ascorbic acid. Kf of water is 1.86°C/m.
September 8, 2010

chemistry
What mass of water (in grams) is needed to dissolve 28.7 g of ammonium nitrate NH4NO3 in order to prepare a 0.452 m (molal) solution?
September 8, 2010

statistics
heights of young adult u.s women are approximatelynormal with mean 64 inches and standard deviation 2.7 inches. What proportion of all u.s. young adult women are taller than 6 feet?
September 7, 2010

Science
Why do scientists use experimental design?
September 7, 2010

math
Complete the following ordered pairs for the equation. 4x+5y=-22(_, -2) (2, _)(7, _)
August 24, 2010

college
i need help to get started with this assignment?
August 20, 2010

Business Communication
So, is A the correct answer
August 13, 2010

Business Managment
Whats the correct answer B or D
August 12, 2010

principles of chemistry
i dont know the answer
August 8, 2010

psych
thanks again ms. sue! you're the best:)
August 7, 2010

psych
Can you tell me if I have this right? Are the major schools of psych? Structuralism, Behaviorism, Functionalism, Psychoanlysis, and Humanism? Just want to make sure I have the right ones. Thank you
August 7, 2010

psych
thank you once again!
August 4, 2010

psych
how does psych as a scientific discipline differ from casual observations we make in the world in everyday life? what are the similarities? Thanks
August 4, 2010

Accounting
o What are the advantages of the four different special journals? When would you use each type?
July 29, 2010

college math
A student makes a 10.50 purchase at the bookstore with a $20.00 bill. The store has no bills and gives the change in quarters and fifty-cent pieces. There are 30 coins in all. How many of each kind are there?
July 29, 2010

college
The preimeter of a retangle is 98. The length is 7m more than twice the width. Fid the dimension?
July 29, 2010

math
of a radio show. Each commercial is either 30 seconds or 60 seconds long. If the total comercial time during 1 hour is 13 min, how many 30-second commercials were played that hour? How many 60-second commercials?
July 27, 2010

National Security policy
What role should American's ideals play in it's National security policy history,current, hypothetical cases
June 27, 2010

math
1. Consider the following equation. xy + 7x + 5y = –8 (a) Differentiate both sides with respect to x to complete the following. ( blank )y ' + y + blank =0 (b)Solve for y ' in terms of x and y. (c) Calculate dy/dx at the point (4,-4). Can anyone help me on this ...
June 21, 2010

Math
Thank you!
June 17, 2010

Math
thank you, But what if the product is something other than -1 Could it still be perpendicular? Why or Why not?
June 17, 2010

Math
How can you determine if two lines are perpendicular?
June 17, 2010

science
First, watch the video, than decide which side you are are more inclined to. Either conservation or preservation, and tell why you chose the one you did. (defend your position)
June 17, 2010

math
No, in order to have a different number of marbles in each of the boxes you would need at least 55 marbles.
June 17, 2010

Science (evolution)
Thank you, they were helpful.
June 17, 2010

Science (evolution)
Well so far I found that fossils support his theory, also I have found that a fish study also supports this. I must find two with resources that support this. Although I have already found two, I was wondering if you or anyone else had any ideas?
June 17, 2010

Science (evolution)
Given Darwin’s Theory of Evolution, what scientific evidence best supports evolution by natural selection?
June 17, 2010

Math
Thank you again! :0)
June 9, 2010

Math
What is the difference between domain and range?
June 9, 2010

Algebra
Thank you.
June 8, 2010

Math
Thank you! :0)
June 8, 2010

Math
Thank you. Are there not any linear equations that do not have a slope? What would they be called?
June 8, 2010

Math
Are all linear equations functions? Why or why not?
June 8, 2010

History
its a question for a penn foster test ( early faces of western art )
May 30, 2010

Algebra
Thanks
May 27, 2010

Algebra
If you replace the equal sign of an equation and put an inequality sign in its place, is there ever a time when the same value will be a solution to both the equation and inequality?
May 27, 2010

science
what is it because i am in year 7 and if I do not have it I will get 1 hour det
May 16, 2010

Philosophy
I figured it out thanks anyway. =0)
April 27, 2010

Philosophy
My text explains the answer to this question, however I do not understand the answer. Instead of posting the entire text I was wondering if anyone could explain this to me in Laymans terms. Thanks. How did financial considerations and the international market affect the pre-...
April 27, 2010

chemistry
Thank you anonymous and DrBob222!
April 27, 2010

chemistry
What is the volume of 45.0g of nitrogen monoxide, NO, at 20 C and a pressure of 740 mm Hg? Please someone can check my work is right or not? NO = 14 + 16 = 30 54.0g / 30 = 33.60 L 273K/293K = 0.932 atm 740 mm Hg = 740 torr = 0.974 atm 33.60L x 0.932 x 0.974 = 30.50 L Answer; ...
April 27, 2010

chemistry
Thank you so much both of you. It really help me to understand. :)
April 15, 2010

chemistry
How many milliliters of NH3 (at STP) are needed to react with 45.0 mL of NO2 (at STP) according to the equation. Can someone please... help me? 8NO2 (g) + 6NH3 (g) --> 7N2) (g) + 9H2O (g) IS this help? a) 45.0 mL b) 27.5 mL c) 33.8 mL d) 60.0 mL
April 15, 2010

chemistry
How many milliliters of NH3 (at STP) are needed to react with 45.0 mL of NO2 (at STP) according to the equation. Can someone please... help me? a) 45.0 mL b) 27.5 mL c) 33.8 mL d) 60.0 mL
April 15, 2010

chemistry
Someone can help me please? A gas sample weighing 0.528 g is collected in a flask having a volume of 126 mL. At 75 degrees celcius the pressure of the gas is 750 torr. The molecular mass of the gas is closest to which one of the following? PV=nRT Thanks, DrBob222
April 14, 2010

chemistry
Someone can help me please? A gas sample weighing 0.528 g is collected in a flask having a volume of 126 mL. At 75 degrees celcius the pressure of the gas is 75 torr. The molecular mass of the gas is closest to which one of the following?
April 14, 2010

chemistry 1
it should be 2C4HO + 8O2 - > 8CO2 + H20
March 7, 2010

CHEMiSTRY
THANK YOU ! ( :
March 7, 2010

CHEMiSTRY
what is the relationship between the pressure of a gas and the absolute temperature when the volume is kept constant ?
March 7, 2010

math
3 + 13 = 16
March 7, 2010

math
pentagon * A pentagon has five sides .
March 7, 2010

chemistryy
thanks .
March 7, 2010

chemistryy
what is the relationship between the pressure of a gas and the absolute temperature when the volume is kept constant ?
March 7, 2010

history
What was the cause of the Panic of 1837? It means the same as too many people buying too much land with too little collateral.
February 25, 2010

American Government
if there is collision between the president and congress,can congress restain the president in foreign policy making?
February 19, 2010

math
do i have to multiply or divide?
February 16, 2010

math
sin 190 over 20 equals sin 47 over x.
February 16, 2010

CHEMISTRY
TO WHAT SPEED MUST AN ELECTRON BE ACCELERATED FOR IT TO HAVE A WAVELENGTH OF 3.0CM?
February 10, 2010

Physics
The answer is 4.00V
February 5, 2010

medical office administration
Acne is an example of a(n) A. papule. B. nodule. C. ulcer. D. vesicle. WOULD IT BE PAPULE?
February 3, 2010

algebra
how to rewrite the expression with positive exponents, please help, thank you.. (29xy)^-2/3
January 27, 2010

algebra
thanks bob, for all your help
January 22, 2010

algebra
the width of a rectangle is 1 ft less than the length, the area is 6 ft^2, what is the length and width? thank you
January 22, 2010

math
2X3
January 20, 2010

algebra
x^2-7x+3=0 1) exact solutions x=? 2) approx to 3 decimal places x=?
January 20, 2010

Advanced Functions math
Yes to get that i did: (5^x)^2 - 4(5^x) =12 5^x(1-4) = 12 -3(5^x)= 12 log(5^x) = log(-4) If you could show me the correct way to do it, that would be great! thanks!
January 18, 2010

Advanced Functions math
Could someone help me with this question? 5^(2x) - 4^(5^x) = 12 I got up to log (5^x)= log(-4) but it isnt correct since it can't be negative.
January 18, 2010

Finance
anthony bought a boat 3 years ago, and at that time he put a down payment of $25000 cash. today he made the second and final payment of $28 300, which includes the interest on the balance owing. anthony financed his purchase at 6.35%/a, compounded quarterly. determine the ...
January 16, 2010

algebra
write a quadratic equation having the given numbers as solutions. -4 and -1 thank you
January 14, 2010

health care administration
what is your view on health care
January 13, 2010

Math
Solve the equation for x in the interval 0<x<2pi 1/ 1+tan^2x = -cos x How would i do this? im thinking of maybe changing the 1+tan to sec^2x?
January 11, 2010

Math-gr12
how would i do that?
January 11, 2010

Math-gr12
How would I solve this equation for x in the interval 0<x<2pi tan^2x sinx - sinx/3 = 0 Please explain it step by step..ive been stuck on this question for far too long..sigh
January 11, 2010

Trigonometry
You use the double angle formulas.
January 11, 2010

algebra
write equivalent expression using radical notation (a^2b^2)^1/3
January 6, 2010

government
was ronald reagan considered strong or weak on foreign policy?
December 31, 2009

DECIMALS
write the appropriate numbers 1. add 15 parts of 0.01 2. add 9 parts of 0.01
December 29, 2009

decimals
add 3 parts of 0.1
December 29, 2009

finance
How much will Pauline pay in interest if she takes out a simple interest loan with a principal of $3,900 at 7.2% for three years?
December 16, 2009

Math
My cousin Robert was pushed into a pool. The pool was 6 feet Wide and 10 feet deep. The pool had soft walls. How did my Cousin Robert Emerge from the pool? Ans__________ Hint- We do not know if it's filled with water or not. It is a round pool. It is a ground pool.It has ...
December 8, 2009

american
Why do you think it was written in 1863(after two years of fighting in the Civil War)?
November 18, 2009

antonyms
lvht- love/ hate
November 18, 2009

Algebra
collect like terms 17a +6b-11a-9b= thanks
November 13, 2009

Algebra
translate to an algebraic expression, the product of 11% of some number
November 11, 2009

Algebra
find the indicated outputs f(x)=2x^2-3x f(0)=? f(-1)=? f(2)=? help?
November 11, 2009

Algebra
I need someone to refresh my brain on collecting like terms.. 17a + 6b - 11a - 9b= thank you
November 10, 2009

history
can you check this question Why did Napoleon invade Russia Napoleon invaded Russia because he wanted to complete his mastery of Europe.
November 4, 2009

world history
could you help me with this question Why did being a sea power help britain to survive an attack by the French?
November 4, 2009

Algebra
describe what the graph of interval [-4,10] looks like. thank you
November 3, 2009

French
Could you please check these Thanks you!!! Directions: Complétez Part 1 1. Au bord de la mer, on va à la ----------------. Answer: plage 2. Il faut mettre de la ---------- quand on prend un bain de soleil. Answer: créme solaire 3. Laure apprend à ...
November 2, 2009

Algebra
trouble with outputs.... Find the indecated outputs for f(x)=3x^2 - 5x f(0)=? f(-1)=? f(2)=? please help
October 23, 2009

algebra
The second angle of a triangle is three times as large as the first. The third angle is 20 degrees larger than the sum of the first two. What are the measures of the angles?
October 22, 2009

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