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November 28, 2014

Posts by Lisa


Total # Posts: 3,046

College Chemistry
The maximum amount of product D that can be produced from the following reaction is 55.75 g. 2A + B ¨ 2C + 3D Following an experiment based on this reaction, when the D was isolated, 50.67 g of D were obtained. What is the percent yield for this particular experiment?
March 26, 2012

College Chemistry
Consider the reaction. 4Fe(s) + 3O2(g) ¨ 2Fe2O3(s) If 0.500 mol of Fe reacts with 0.400 mol of O2, what are the limiting reactant and the theoretical yield in moles of Fe2O3 for the reaction, respectively?
March 26, 2012

College Chemistry
Animals break down glucose (C6H12O6) as a source of energy according to the following overall reaction. C6H12O6(aq) + 6O2(g) ¨ 6CO2(g) + 6H2O(l) What mass in grams of CO2(g) is produced from the reaction of 15.0 g of glucose?
March 26, 2012

College Chemistry
For the following reaction: A + 3B ¨ 4C Which of the following provides the direct link between the amount of reactant A and the amount of product C?
March 26, 2012

College Chemistry
Consider the following symbolic reaction in which the hypothetical elements hearts (¢¾) and diamonds (♦) react to produce the compound spades (¢¼). ¢¾ ¢¾ ¢¾ ¢¾ + ♦ ¡æ ¢¼...
March 26, 2012

College Chemistry
Consider the following reaction that occurs when natural gas is burned. CH4(g) + 2O2(g) ¨ CO2(g) + 2H2O(g) How many moles of water are produced when 6.2 mol of methane are burned? Assume that there is more than enough oxygen present.
March 26, 2012

UNIVERSITY OF PHONEX
Wow! Very professional response.
March 26, 2012

criminal justice
Thank you..
March 25, 2012

criminal justice
By ansering the questions... I've read the constitution and all my materials, but not really sure what to say. Ugh!!!
March 25, 2012

criminal justice
Options Menu: Forum Topic: Interpreting the U.S. Constitution Consider the following scenario: The Supreme Court interprets the U.S. Constitution. Thomas Jefferson once argued against the doctrine of judicial review. He believed in the principles of "checks and balances,&...
March 25, 2012

Criminal Justice
Should judicial review be eliminated? Provide a detailed explanation for your answer.
March 25, 2012

Criminal Justice
What's sad is that I haven;t been in school for 20 years and a friend told me you have to try Liberty online out, its amazing!! So I listened and the sad thing is I feel lost because I don't have an actual teacher to really help and visualize things. I can't quit ...
March 25, 2012

Criminal Justice
I've never used this site before so I apologize if I'm not exactly asking questions correctly Ms. Sue...
March 25, 2012

Criminal Justice
Options Menu: Forum Topic: Interpreting the U.S. Constitution Consider the following scenario: The Supreme Court interprets the U.S. Constitution. Thomas Jefferson once argued against the doctrine of judicial review. He believed in the principles of "checks and balances,&...
March 25, 2012

Criminal Justice
If judicial review were eliminated, what alternative means could be used to interpret the meaning of the Constitution?
March 25, 2012

Chemistry
I'm not trying to be defensive, even though that's how I came across. I simply don't understand nothing of it. I don't know how or what to answer the question. I look at it and don't know how to solve, in other words it's like another language that I ...
March 25, 2012

Chemistry
I don't understand it. To you is simple and basic but to me is very hard subject to understand and solve. Thank you anyways for your help.
March 25, 2012

Chemistry
At equilibrium, it was found that [CH3COOH] = 0.8537 M, [CH3COO-] = 0.0040 M, and [H3O+] = 0.0040 M. Calculate the acidity constant of CH3COOH and the pH value of the solution. - Please show how you solve the problem.
March 25, 2012

Chemistry
Consider the HF solution with the concentration 5%(w/v). Calculate its concentration in the molarity. Use four significant figures in the answer.
March 25, 2012

Chemistry
Calculate the concentration of the hydronium ion([H3Ol+]) for a solution with the pH = 4.5
March 25, 2012

Chemistry
Write the acid-dissociation reaction of nitrous acid (HNO2) and its acidity constant expression.
March 25, 2012

spanish
Yo me lavo mis manos y mi cara. Yo me cepillo los dientes y me cepillo mi pelo. Yo me pongo mi ropa
March 25, 2012

healthcare
how can you review and develop your work performance at aged care
March 25, 2012

healthcare
What information should you share with others at workplace that promotes to aged care
March 25, 2012

english
How can you resolve conflict whilst working in the community
March 25, 2012

pshy
9. What is the general term Freud used to describe the process whereby the mind protects itself against distress? (Points : 1) Compensation Defense mechanism Rationalization Displacement
March 24, 2012

pyc
1. Tai decided to join a group protest of his university’s policies because he felt it was the right thing to do, even though his participation might result in being arrested. Tai’s behavior is consistent with Kohlberg’s (Points : 1) preconventional morality. ...
March 24, 2012

health
what is the correct procedure to deal with resource shortage
March 24, 2012

health
i need help with this quetion What dose it mean work in a psitive and courteous manner and why is this important for
March 24, 2012

algebra
Four boys sit down to play a game of marbles. They empty the bag of marbles and divide the marbles among themselves, and they find they have one marble left. A fifth boy comes along and wants to play, so they divide the marbles among all five boys and once again find that ...
March 22, 2012

Accounting
Problem 9-5 Warranties Bombeck Company sells a product for $1500. When the customer buys it, Bombeck provides a one-year warranty Bombeck sold 120 products during 2010. Based on analysis of past warranty records, Bombeck estimates that repairs will average 3% of total sales. ...
March 22, 2012

health
Need help in answering this question How do physical changes during old age impact on the client?
March 21, 2012

physics
What will be the equilibrium temperature when a 245-g block of copper at 285„aC is placed in a 145-g aluminum calorimeter cup containing 825g of water at 12.0„aC?
March 18, 2012

washington state history
explain the coastal indian ceremony called a potlach? how is this different than your birthday party?
March 15, 2012

washington state history
if you were a native american where would you go to fish, what fishing techniques would use , and how would you cook and process the fish?
March 15, 2012

washington state history
What are the different types of clothingworn by washington coastal and plateau indians in the summer and winter?
March 15, 2012

washington state history
What are the similarities and differences in the dangers experinced by the coastal indians who hunted whales and the plateu indians who crossed the rockies?
March 15, 2012

washington state history
What are the problems faced by native americans in their journey from central asis to present day state of washington?
March 15, 2012

human development
a description of ethical and legal considerations in conducting research in human development. Also explain how you would identify and reduce gender and racial biases when conducting such research.
March 14, 2012

Econ
How does the aggregate goods and services market differ from the regular (microeconomic) supply and demand market? In other words, how does aggregate demand and aggregate demand differ from normal supply and demand? Address the measures of price, quantity, and the demand and ...
March 12, 2012

science
How would changes in blood flow o specific organs help someone resist dehydration? Consider how reduction of function in particular organ systems might help conserve water
March 9, 2012

chemistry
Stearic acid, nature's most common fatty acid, dimerizes when dissolved in hexane: 2C17H35COOH Picture (C17H35COOH)2; ΔH°rxn = -172 kJ The equilibrium constant for this reaction at 28°C is 2900. Estimate the equilibrium constant at 38°C.
March 8, 2012

geometry
The perimeter of rectangular playground is 200 feet. If the length is 5 feet less than twice the width, what are dimensions of the playground
March 8, 2012

english
im doing an essay on why success can be bad or change someobody for the worst & im using two celebrity examples. my first example is lindsay lohan. whats another example of a celebrity that has changed for the worst because or success, or a celebrity that success hasnt been ...
March 4, 2012

Biology multiple choice question
If a randomly-mating population has an established frequency of 64% for the organisms homozygous dominant for a given trait, what is the frequency of this dominant allele in the gene pool? A. .2 B. .24 C. .36 D. .8 E. .64 I think the answer is D. .8
March 4, 2012

government
Explain your perception of the advantages and disadvantages of the American bicameral system.
March 4, 2012

Government
I think its A
March 2, 2012

Math-properties
c(a*b) = (c*b)a Is this commutative, associative, or both? It feels like it is commutative since numbers change their order. However, it feels like it is associative, because different numbers are grouped together in the parenthesis. Is it possible to show two properties at once?
March 1, 2012

statistics
You are studying the rate of incidence of skin cancer in people who live near the equator. Your survey of 200 people from the area has shown that 7 of them developed skin cancer. Provide a 99% confidence interval for the true rate of incidence.
March 1, 2012

Calculus. I need help!
i dont know which one is match. i tried those problem. i couldnt solve it Find y' by implicit differentiation. Match the expressions defining y implicitly with the letters labeling the expressions for y'. 1. 7xsiny+2cos2y=2cosy 2. 7xcosy+2sin2y=2siny a. 7cosy/7xsiny-...
March 1, 2012

physics
Sorry Please disregard this post!!
February 28, 2012

physics
A box slides across a frictionless floor with an initial speed v = 1.8 m/s. It encounters a rough region where? If instead the strip is only 0.413265306122449 m long, with what speed does the box leave the strip? vf =
February 28, 2012

physics
sorry Please disregard this post
February 28, 2012

physics
A horizontal force of magnitude F = 116 N is used to push a box of mass m = 9 kg from rest a distance d = 13 m? 1)How much work is done by the force on the box? WF = 2) How much work is done on the box by the gravitational force during this same displacement? Wg = 3) How much ...
February 28, 2012

Web Scripting
I'm using actionscript. when you press the mouse, you can draw (using a rectangle) and when you click the mouse it changes colors. What I need to do is have buttons so that a user can click on the button to choose the color they want. How can I do this?
February 27, 2012

COLLEGE CALCULUS.
i don't understand this problem Let F(x)=f(x^4) and G(x)=(f(x))^4. You also know that a^3=2, f'(a)=13, f'(a^4)=15. Find F'(a) and G'(a).
February 27, 2012

Chemisty
.588 g Na3Ag(S2O3)2
February 26, 2012

math
Hiroshi jogs less than 4 miles each day. After n days,he has jogged 16 miles. Which inequality can be used to find the number of days it might have taken Hiroshi to jog 16 miles.
February 26, 2012

Math
70 X __ =____ 100 450 So first we cross multiply 70*450 which is 31,500. Then we divide 31,500 by 100 and we get $315 Now im not really sure if i got the write answer because im not sure if we have to ue proportion work.
February 24, 2012

Easy 4th Grade Math
picture frame laptop desk Book t.v pillow door
February 23, 2012

Math help needed
176 lbs is the same as 79.83 kg. The total amount of drug that this soul needs would be (50 mg / kg / day) * (79.83 kg) * (10 days) = 39,915 mg. With each tablet having 250 mg of drug, the number of tablets the party would need would be 39,915 mg / 250 mg = 42.66 tablets, or ...
February 23, 2012

science
speed and direction
February 23, 2012

science
false
February 23, 2012

Computer Programming (XML)
Using the employees.xml file below, create a DTD file “employee.dtd” based on “employees.xml”. Create a schema files “employee.xsd” based on “employees...
February 23, 2012

math
Factor completely: 36t^2 + 49 - 84t
February 22, 2012

Math
what is the cube root of -1/64
February 22, 2012

Math
One-third of a number, decreased by thirty-six, is at most twenty-two. Find the number. Please help me
February 22, 2012

Math
Need answer ASAP
February 22, 2012

Computers (XML)
employees.xml <?xml version="1.0" encoding="UTF-8"?> <employees> <employee> <first_name>Linda </first_name> <middle_name>P.</middle_name> <last_name>Jone</last_name> <home_phone>386-333-2321</...
February 21, 2012

programming
In order to share an XML file among different systems and programs, this XML file need to checked well, what are the two things to be done? /////////////////////////////////employees.xml//////////////////////////////////////////// <?xml version="1.0" encoding=&...
February 21, 2012

programming
In order to share an XML file among different systems and programs, this XML file need to checked well, what are the two things to be done? /////////////////////////////////employees.xml//////////////////////////////////////////// <?xml version="1.0" encoding=&...
February 21, 2012

Implicit Differentiation
Sorry. I meant the denominator from the quotient rule was never multiplied to the right or so. I don't see it. Where did that portion go?
February 18, 2012

Implicit Differentiation
I did this exactly with this question and i got the wrong answer. Use implicit differentiation to find the slope of the tangent line to the curve y/(x+5y)=x^3+5 at the point (x=1, y=6/–29). But I noticed after "we can continue..." the denominator was moved to ...
February 18, 2012

Physics
Suppose you wish to whirl a pail full of water in a vertical circle without spilling any of its contents. If your arm is 0.93 m long (shoulder to fist) and the distance from the handle to the surface of the water is 15.0 cm, what minimum speed is required?
February 15, 2012

Pre- Algebra
Add 5 to both side 7n=10n+18 Then subtract 10n -3n=18 Finally divide -3 on both sides n=-6
February 15, 2012

chemistry
How do you make a 3 m solution of kbr? How many moles of kbr are in 1 liter of a .03 m solution?
February 15, 2012

Math
Last Saturday Michaela rented 4 movies from the video store. This Saturday she rented 2 movies. Let x represent the cost of renting each movie. Write and simplify an expression for how much more Michaela spent last week renting movies. Please help me work this out thanks
February 15, 2012

Math
5n/8-1/2=3/4 Please help me solve this problem and show me how you did it thanks.
February 13, 2012

science
From the 1970s to the present, a shift in the evolution of public policy moved toward a New Federalism. How did this effect public policy? Was this positive or negative? Why?
February 13, 2012

Chemistry
How much heat is required to raise the temperature of a 65-g sample of water from 32 degrees celsius to 65 degrees celsius
February 11, 2012

Algebra
The officejet printer can copy sues dissertation in 16 minutes. The laser printer can copy the same document in 22 minutes. If the two machines work together, how long would they take to copy the dissertation?
February 11, 2012

Algebra
The officejet printer can copy sues dissertation in 16 minutes. The laser printer can copy the same document in 22 minutes. If the two machines work together, how long would they take to copy the dissertation?
February 11, 2012

Math
y/2-5y/6+1/3=1/2 Please help me solve this problem.
February 11, 2012

Math
Combine like terms. Please help me figure this out. 3p square6 -7q+14p square6
February 9, 2012

algebra
Suppose that you can spend $72 for compact discs and videos. Discs cost $18 and videos cost $9 each. write a system of inequalities that shows the various number of discs and videos that you can buy.
February 8, 2012

chemistry
a 7.500-mg sample of chromium-55 is analyzed after 14.0 min and found to contain 0.469 mg of chromium-55. what is the half-life of chromium-55
February 8, 2012

Geometry (Logic)
Which argument is not valid? 1.) Given: a→b a Conclusion: b 2.) Given: a˅b ~b Conclusion: ~a 3.) Given: a→b ~b Conclusion: ~a 4.) Given: a→b b→~c Conclusion: a→~c
February 7, 2012

algebra
Assume you work at a company where you are paid hourly. You are paid $8.60 per hour for regular time (less than or equal to forty hours) and time and a half for overtime hours up to fifty hours in one week. If you are asked to work fifty or more hours in one week you are paid ...
February 7, 2012

Chemistry
What is the density of a gasoline sample that has a volume of 13.3 mL abd a mass of 8.86 grams?
February 6, 2012

Chemistry
What is the volume of 4.00 grams of air if the density of air at the time of the measurement is 1.19 g/l?
February 6, 2012

Statistics-Matrix of Transition Probabilities
Given the following matrix of transition probabilities, write three equations that, when solved, will give the equilibrium state values. P = large bracket with a b on top and c d directly under that, closed large bracket. Thanks.
February 6, 2012

math
9x-8y=-2
February 5, 2012

Algebra
11. The drama club is selling tickets to its play. An adult ticket costs $15 and a student ticket costs $11. The auditorium will seat 300 ticket-holders. The drama club wants to collect at least $3630 from ticket sales. a) Write and graph a system of four inequalities that ...
February 4, 2012

physics
If you drop object,acceleration to groud is 10m/s2, if you throw it would it be greater than 10m/s2? (ignore air resistance) Why or why not?
February 4, 2012

Statistical Quality Control /UCL's & LCL's
THANK YOU, MathGuru, for your help!
February 4, 2012

Statistical Quality Control /UCL's & LCL's
PLEASE HELP me solve the following problem: A computer diskette manufacturer is concerned that some diskettes have bad sectors that would cause a diskette to hold less information that it was intended to hold. In the past, only 5% of these diskettes have had bad sectors. If ...
February 4, 2012

Math
A box contains 3 red marbles, 6 blue marbles, and 1 white marble. The marble are selected at random, one at a time, and are not replaced. Find the probability. P(blue and red) Please help me
February 2, 2012

Physics
but i don't have m...
February 2, 2012

Physics
A cannon is fired from a cliff 190 m high downward at an angle of 21° with respect to the horizontal. If the muzzle velocity is 34 m/s, what is its speed (in m/s) when it hits the ground?
February 2, 2012

alg2/trig
starting salary for a job is $30,000 with a guaranteed raise of $5,000 each year for the first 5 years. write an explicit formula to represent how much money you would earn each year. please somone help!
February 1, 2012

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