Friday
November 28, 2014

Posts by Stacy


Total # Posts: 484

Criminology
What future research directions of crime do you find most interesting, and why? I have done a web search and can't seem to get the ball rolling. Any help would be greatly appreciated.
June 16, 2011

Criminology
Thank you
May 31, 2011

Criminology
what implications do psychological theories of criminal behavior have for public policy?
May 31, 2011

critical thinking/205
how can I apply critical thinking when evaluating conversations, and media sources
May 15, 2011

Math
Write an equation which models how old in years each of you will be when you are three times as old as the younger person. My age is 30, my son is 6.
May 14, 2011

Chemistry
what does it mean when we say that concentrated nitric acid has 16 molars
May 9, 2011

math
Is it reasonable for a 7th grader to use a calculator for math?
April 28, 2011

Grade 11 Math
A rectangular dog run is to be enclosed by a fence and then divided into two smaller rectangular areas by a fence parallel to one of the sides. If 54m of fence is available, find the dimensions of the dog run of greatest possible area. State the total area
April 26, 2011

physics
I'm actually doing a project but I don't know how easy it will be to describe it. It involves two weights, both attatched to the same string through the center of a flat surface so one weight is directly on the surface, and the other is dangling below. What the ...
April 3, 2011

Research Design
I need help describing the similarities and differences between quantitative and qualitative research.
April 1, 2011

chemistry
calculate the enthalpy of formation, per mole, of sucrose, C12H2211O(s). C12H22O11(s) + 12O2(g) --> 12CO2(g) +11H2O(l) deltaH=-5.65*10^3 kJ
March 23, 2011

chemistry
calculate the enthalpy of formation, per mole, of sucrose, C12H2211O(s). C12H22O11(s) + 12O2(g) --> 12CO2(g) +11H2O(l) deltaH=-5.65*10^3 kJ
March 23, 2011

math (plz help)
Ms. Sue has not answered this question where all work must be shown. Plz, Ms. Sue do not answer this one again. Let someone else help me...plz. In a movie theater, Theater A has 30 seats in the first row. Each row has 4 more seats in it than the previous row has. 1) How many ...
March 14, 2011

math (plz help)
In a movie theater, theater A has 30 seats in the first row. Each next row has 4 more seats in it than the previous row has. 1) How many seats are in the 4th row? 2) Is there a row with exactly 60 seats in it? 3) Theater B has 40 seats in the first row and each row has 4 more ...
March 14, 2011

math
1) What is 20% of 30? 2) What is 30% of 20? 3) If m and n are any whole number, is m% of n always equal to n% of m? Explain the answer and support it with 2 examples.
March 14, 2011

stats
if the true proportion of californians who are unemployed is 11%, what is the probability that a sample of 100 californians are unemployed?
March 14, 2011

math
In a movie theater, theater A has 30 seats in the first row. Each next row has 4 more seats in it than in the previous row has. 1) How many seats are in the 4th row?Explain. 2) Is there a row with exactly 60 seats in it? Explain. 3) Theater B has 40 seats in the first row and ...
March 10, 2011

math
There are nine equally likely outcomes if you spin this spinner twice (x,y,z) 1) Three of the 9 equally likely outcomes are xx,yy and zz. List the other six outcomes. 2) If you spin the spinner three times, what is the probability of getting yyy? Explain the answer. 3) Give an...
March 1, 2011

math
The following pattern continues indefinitely: REPEATREPEATREPEAT 1) What is the 38th letter in the pattern? Explain answer. 2) What is the 40th letter in the pattern? Explain answer. 3) What is the 604th letter in the pattern? Explain answer.
February 23, 2011

physics
three more questions: 1) A 1.50kg projectile is launched at 18.0m/s from level ground. The launch angle is 26 degrees above the horizontal. (Assume negligible friction) a) What is the maximum height reached by this projectile? b) How was will the projectile be travelling when ...
February 17, 2011

physics
great, thank you so much!
February 17, 2011

physics
A rock is thrown from a cliff top at 18m/s, 25 degrees above the horizontal. It lands on the beach 4.2 seconds later. a) What is the height of the cliff? b) Hor far from the base of the cliff did the rock land?
February 17, 2011

8th grade science
Why can high blood viscosity have negative effects? Also, name the medical condition that people can develop with high blood viscosity.
February 17, 2011

math
The distance between (0,0) and (0,1) on a certain coordinate plane is 1cm. The distance between (0,0)and (1,0) on that same coordinate plane is 1cm. What is the distance between (0,0) and (1,1). Explain the answer
February 17, 2011

math
the sign reads: receive a $10 gift card for every $50 spent. 1) If your reward is $10, what do you know about the amount of your purchase? 2) Give three possible amounts if your reward is $20. 3) What should you do if your total purchase is $98? Explian answer.
February 16, 2011

math - please help
In a gift wrapping department, a customer can choose from x different papers, y different ribbons, and z different greeting cards. There are 160 different paper, ribbon, and greeting card combinations. List three of the possible combinations.
February 3, 2011

psychology
Brain teaser help please! Bedspread Agent and also ii_________ii oo oo
February 1, 2011

psychology
Brain teaser help please! Bedspread Agent and also ii_________ii oo oo
February 1, 2011

factoring quadratic expression
w^2+2w+1
January 26, 2011

factoring quadratic expression
w^2+2w+1
January 26, 2011

math
I have trouble finding the solution for this: Find the equation of the line through (2,a) and (4,b).
January 23, 2011

biology
If I was 100% water what would my volume be?
January 22, 2011

chemistry
If I was 100% water what would my volume be?
January 22, 2011

Math
Gerald and Michelle went on a 24 mile bike ride. By lunchtime they had ridden 5/8ths of the total distance. how many miles did they have left to ride after lunch ?
January 10, 2011

chemisty
Thanks! and No Stacy is not my real name, although Shirley is my mothers name LOL!
December 14, 2010

chemisty
Posted by STACY on Monday, December 13, 2010 at 7:56pm. Consider an aqueous solution prepared from 250.0 mL of water and 1.27 g of potassium bromide. Express the amount of potassium bromide in this solution in terms of (a) mass percent (b) mole fraction (c) molarity assume the...
December 14, 2010

chemistry
how many grams of sodium carbonate are needed to prepare 0.250 L of an 0.100 M aqueous solution of sodium ions? well normally you go moles=grams/molar mass than M= moles/L but when looking for grams? what do you do........multiple .250 by .100 than divide by the molar mass of ...
December 14, 2010

CHEMISTRY
Soooo Moles= MxL (0.100M)(0.250L)=0.025 than multiply moles by molar mass (0.025)(105.988)= 2.65g So my answer is 2.65g but the book says it's 1.32g? What am I overlooking.....man I hate chemistry =(
December 13, 2010

CHEMISTRY
how many grams of sodium carbonate are needed to prepare 0.250 L of an 0.100 M aqueous solution of sodium ions? well normally you go moles=grams/molar mass than M= moles/L but when looking for grams? what do you do........multiple .250 by .100 than divide by the molar mass of ...
December 13, 2010

CHEMISTRY
I surely do, and don't call me Shirley! LOL yessss i'm sorry I don't know much about chemistry that's why i'm here!! 1. Mass percent= grams solute/100solution 1.27g/250.0mL = 5.08x10^-03 is my answer but the correct one is 0.505% 2. Mole fraction= moles ...
December 13, 2010

CHEMISTRY
Consider an aqueous solution prepared from 250.0 mL of water and 1.27 g of potassium bromide. Express the amount of potassium bromide in this solution in terms of (a) mass percent (b) mole fraction (c) molarity assume the density of the solution is equal to that of water, 1.00...
December 13, 2010

chemistry
Describe how a 250.0 mL aqueous solution of 1.50 M MgCl2 is prepared from a stock solution of 6.00 M MgCl2. ANSWER: Measure 62.5 mL of the stock solution into a container and dilute to 250.0 mL so what i need explained is where did 62.5 mL come from?
December 13, 2010

chemistry........help!! =)
How many grams of FeSo4 are required to prepare 0.50 L of a 0.010 M FeSO4 solution? I don't need the answer just shown how to do it! thanks
December 13, 2010

Pre-Calculus
What is the present value of a $1000 bond which pays $50 a year for 10 years, starting one year from now? Assume interest rate is 6% per year, compounded annually
December 10, 2010

chemistry
Ok Thanks =)
December 8, 2010

chemistry
That consists of 30.0g NaCl/(30.0g NaCl + 970 g H2O) ........... Where did this # come from 970 g H2O?
December 8, 2010

chemistry
Determine the mass of NaCl in 1.0 L of 3.0 % by mass aqueous solution of sodium chloride. The density of the solutions is 1.10 gmL-1 please explain all the steps, thanks!
December 8, 2010

chemistry
4.23/184.113= 0.0230 0.0230x2= 0.046 1.21/119.002=0.010167 0.046+0.010167=0.056167 0.056167x6.02E23 = 3.38x10E22 -----is this the right answer?
December 8, 2010

chemistry
Determine the number of bromide ions in solution when 4.23 g of magnesium bromide and 1.21 g of potassium bromide are dissolved in 120mL of water. Please explain not sure how to even start this problem, thanks! chemistry - DrBob222, Wednesday, December 8, 2010 at 7:57pm ...
December 8, 2010

chemistry
4.23g MgBr2 Moles= grams/molar mass 4.23/184.113 = 0.023 moles 1.21g KBr Moles= grams/molar mass 1.21/119.002 = 0.033 and than what? I add those two #'s together? 0.033 + 0.023 = 0.033 and I dont know what you mean by 1 mole of Br- ions will contain 6.022e23 ions where did...
December 8, 2010

chemistry
Determine the number of bromide ions in solution when 4.23 g of magnesium bromide and 1.21 g of potassium bromide are dissolved in 120mL of water. Please explain not sure how to even start this problem, thanks!
December 8, 2010

science
Crystal can ride her bike 10 miles in 2.1 hours. What is her velocity?
December 6, 2010

chemistry
What volume of a concentrated HCl solution, which is 36.0% HCl by mass and has a density of 1.179 g/mL, should be used to make 4.60 L of an HCl solution with a of 1.9? HELP!!!
December 6, 2010

chemistry
Find the percent by mass of sodium chloride in a 1.35 M NaCl solution. The density of the solution is 1.06 g/mL..............how do I go about doing this question thanks!
December 4, 2010

anatomy and physiology
A 67-year-old man is diagnosed with cancer and subsequently undergoes chemotherapy. As an expected side effect of chemotherapy, his bone marrow stops functioning. What is a potential consequence of this loss of function?
December 3, 2010

chemistry
thanks........but that didn't help me at all =(
December 1, 2010

chemistry
How do I draw the lewis structure for [PF5Cl]- i'm getting confused on this one!! Please explain answer Thanks =))
December 1, 2010

VB programming
Okay, I understand what you've advised somewhat, but was wondering if you can give a simple example of the line segments. I kind of based this off of a bar chart I created. Thanks..
December 1, 2010

Chemistry
In a calibration of a calorimeter, 50.0 g of water at 60.0 *C is added to 50.0 g of water at 20.0 *C to give a mixture at 39.0 *C. What is the heat capacity of the calorimeter used in this experiment? If the calorimeter has a mass of 5.4g, what is its specific heat?
November 29, 2010

Chemistry
Calculate the final temperature when 20.0 g at 60 *C iron is put into 50.0 ml of 20 *C water. The specific heat of iron is 0.449 J/g*C and that of water is 4.184*C. (Assume no heat is lost to the container or the surrounndings.)
November 29, 2010

Physics
Two masses are suspended from a pulley as shown in the figure . The pulley itself has a mass of 0.30 kg, a radius of 0.20 m, and a constant torque of 0.30 m \cdot N due to the friction between the rotating pulley and its axle. What is the magnitude of the acceleration of the ...
November 28, 2010

Programming
Write a program that allows the user to display a budget as a pie chart. After the user enters numbers into the four text boxes a presses the button, the pie chart should be displayed. When I push the button for my code it does not display anything. Could you help me ...
November 28, 2010

Chemistry
C15H30 is a hydrocarbon that reacts with oxygen gas to give carbon dioxide and water. Calculate the mass of water (grams) formed when 859.64 grams of the hydrocarbon reacts with the oxygen gas. can someone please show me how this is done thanks
November 25, 2010

chemistry
Wha??
November 20, 2010

chemistry.......help
the first one (a) I was suppose to write 6.36L of LiNO3 soooooo but ur M=moles/L I take 0.36/6.36L and get 0.0566 and i'm suppose to give the awnser in 2 significant figures which I think is 0.05 but it I got it wrong.......the anwser is M= 5.5x10-2 M what did i do wrong???
November 20, 2010

chemistry
calculate the molarity of each of the following solutions. Help!! (a) 0.36 mol of LiNO3 L of solution (b) 70.7 g C2H6O in 2.25 L of solution (c) 11.56 mg KI in 114.2 mL of solution
November 20, 2010

Chemistry
Acetic acid (CH3COOH) reacts with isopentyl alcohol (C5H12O) to yield the ester isopentyl acetate which has the odour of bananas. If the yield from the reaction is 45%, how many grams of isopentyl acetate are formed when 3.77 g of acetic acid and 7.46 grams of isopentyl ...
November 19, 2010

Chemistry
In an industrial process, the following reaction is carried out in the presence of a catalyst: C16H65 + Cl2 ¨ C16H65Cl12 Calculate the percentage yield if 164.57 grams of C16H65 are used in the reaction and 400.24 grams of C16H65Cl12 are produced.
November 19, 2010

chemistry........help!! =)
Thanks for making sense of it for me!!
November 17, 2010

chemistry........help!! =)
MaVa = MbVb can be used for the reaction between HCl and NaOH. Can it be used for the reaction between NaOH and H2C2O4 (oxalic acid, which can be found in rhubarb leaves, contains 2 acidic protons)? Explain your answer showing the balanced equation
November 17, 2010

physics
A stone tied to the end of a string, 80 cm long, is whirled in a horizontal circle with a constant speed. If the stone makes 14 revolutions in 25 seconds what is the magnitude and direction of the acceleration of the stone?
November 16, 2010

MATH/208 University of Phoenix
I need the answers for week three, can anyone help?
November 8, 2010

Chemistry...Help!!
It's a question in Mastering Chemistry, I don't know how else to reword it? That's their words =( I did plug in those #'s and it came back wrong, but it doesnt show me the right anwsers....so I dunno??
November 6, 2010

Chemistry...Help!!
Help, exam on monday!!
November 6, 2010

Chemistry...Help!!
I don't even know how to start this...The valence electron configurations of several atoms are shown below. How many bonds can each atom make without hybridization? 1. Si 3S2 3P2 2. P 3S2 3P3 3. F 2S2 2P5
November 6, 2010

Physics
A rigid tank contains 1.20 moles of an ideal gas. Determine the number of moles of gas that must be withdrawn from the tank to lower the pressure of the gas from 28.5 atm to 5.30 atm. Assume the volume of the tank and the temperature of the gas remain constant during this ...
November 5, 2010

College Chemistry
Calculate the Molarity of the solution that contains 4.00 grams of NaOH in a total volume of 1500.0 mL. [Molar Mass NaOH = 40.00g, 1 Liter = 1000 mL]
November 5, 2010

chemistry
What is the molecular, ionic, and net ionic equations for Copper(II) sulfate + sodium phosphate?
November 3, 2010

chemistry
I need the molecular, ionic and net ionic equation for copper (II) acetate and sodium carbonate......help!
October 28, 2010

Chemistry
I need the molecular, ionic and net ionic equations for Potassium carbonate and hydroiodic acid........i'm clueless please help as much as you can!
October 28, 2010

Chemistry
ok so C = 19x 12.01 = 228.19 H = 97 x 1.001 = 97.097 Cl = 35 x 35.45 = 1240.75 =1566.82
October 22, 2010

Chemistry
What is the molecular mass of: C19H97Cl35
October 22, 2010

Medical Terminology
A patient states that he gets up three or more times per niht to void. What type of condition does this symptom indicate? A-Uremia B-Calculi C-Stricture D-Nocturia
October 22, 2010

Medical Terminology
A pyelogram was performed on a 43-year old male patient. The root word means? A-trough,basin,pelvis. B-ureter,urethra C-bladder,urine D-kidney,medulla
October 22, 2010

programming
No you are right. But I'm having trouble getting the correct coding for that step. Any ideas?
October 22, 2010

programming
write a program to calculate the amount of a server's tip given the amount of the bill and the percentage tip ovtained via input dialog boxes. The output should be a complete sentence that reiterates the inputs and gives the resulting tip. here is my attempt: Public Class ...
October 22, 2010

College Algebra
So once I have to convert sqrt of 40 and solve from there?
October 22, 2010

Physics!
Baseball player A bunts the ball by hitting it in such a way that it acquires an initial velocity of 1.9 m/s parallel to the ground. Upon contact with the bat, the ball is 1.5 m above the ground. Payer B wishes to duplicate this bunt, in so far as he also wants to give the ...
October 14, 2010

chemistry
I dunno......I hate chemistry!
October 13, 2010

chemistry
A laboratory procedure calls for making 400.0 mL of a 1.1 M NnO3 solution. What mass of NaNO3 (in g) is needed?
October 13, 2010

chemistry
so 114 ml is 0.114 L 1.85x 0.114 = 0.2109 ??
October 13, 2010

chemistry
How many moles of KCL are contained in 114 mL of a 1.85 M KCL solution?
October 13, 2010

chemistry
=0.125 moles not + that was a typo...
October 13, 2010

chemistry
Soooo 22.6/ 180.156 + 0.125 moles than 0.125/1.08L = 0.116 molarity??
October 13, 2010

chemistry
calculate the molarity of a solution in which 22.6g C6H12O6 is dissolved in 1.08L of solution
October 13, 2010

Physics
A biotech company produces a solution with an active biomass of 8.7604x10^6 cells per litre of solution. The solution is shipped by tanker truck with a volume of 4.16462x10^1 m3. How many cells are being sent per shipment, expressed to three significant figures?
October 3, 2010

Physics
How many m3 are there in 3.0475x10^5 cL, expressed to 3 significant figures?
October 3, 2010

Chemistry
mg is magnesium yes thats seawater sorry exavt is supposed to be exact
September 29, 2010

Chemistry
magnesium is a valuble metal used in alloys in batteries and in manufacture of chemicals it is obtaine mostly in sweater which is about 1.3g mg for every kilogram of sweater assume that the sweater has a density of 1.03g/ml calculate the volume of the sweater in liters to the ...
September 29, 2010

Chemistry
how many neutrons are in an element of mc where x =124 and y = 22
September 29, 2010

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