# Posts by Michelle

Total # Posts: 2,042

Chemistry
how can i find out how many moles of oxygen are in 9.85g of (NH4)2CO3 ? i want to know what steps to take and in what order.. please help

Math
Can somebody help me with the following probability question? There is none like it to refer to in my textbook and I am confused. Explain how you would determine the probability that a given household in your community is watching the 10:00m tv news on a Wednesday night?

math
geometry answers "You have a rectangular sheet of paper with dimensions 8.5 inches by 14 inches. if you use 3 inches as the value of x, What are the dimensions? and its volume?

HR-Management
behavioral observing traing

math
Each year, Cathy invests \$1,200 in her account. The account pays an interest rate of 6.3%. The formula to calculate the balance in her account is B =A(1+ r)n+1- A, where r A is the amount invested per year, r is the interest rate, and n is the number of years investing

Paralegal
to get the answers to the questions

Paralegal
# Identify the components of the diversionary program and initiatives within the NCJRS website- Woman & Girls in the Criminal Justice System. # Compare and contrast State and local programs as they contribute to successful reintegration and transition services. # Analyze ...

Algebra
Can someone check my answers? 1. 3/c - 4/3c = 5/3c 2. -3t/t-4 - 2t+4/4-t = -2t-4/t-4 3. z/3z^2 + 4/7z = 19/21z 4. 5x/2x-6 + x+2/3-x = 4x-2/2x-6 or 2(2x-1)/2(x-3)

Asap/Algebra
Simplify the following expression. suare root -104, square root -8 (these two radicals are beside each other without a addition, subtraction, multiplication, or division sign)

chemistry
what is the balanced equation of NaHCO3+CH3OOH---->H2CO3+NaCH3COO

Economics
(iii) Bright Future, Ltd (BF) is a nonprofit foundation providing medical treatment to emotionally distressed children. BF has hired you as a business consultant to design an employment policy that would be consistent with its goal of providing the maximum possible service ...

Economics
2. (i) The production function for a firm is given by Q = LK where Q denotes output; Land K labor and capital inputs. Wage rate and rental rate are given by w and r respectively. (a) Show whether or not the above production function exhibits diminishing marginal productivity ...

Economics
4 (ii) You manage Dirt Diggers, an excavating firm that excavates roadside ditches for laying drainpipes. Its output follows the production function: Q = 10L -.1L2 where L denotes labor hours and Q the length of the ditch in meters. You can hire labor at the going wage rate of...

Economics
3. (i) Sleak Teak builds yard furniture using hardwoods and (in a smaller shop) handcrafted knick-knacks from the same sort of wood. The hardwood usage in the two lines of product are Yard Furniture: Y = 2 Ty - .001Ty2 Knick-knacks: Z = 20Tz - .01 Tz 2 where Y and Z are units ...

Algebra
I need help multiplying rational expressions.. x-2/x+3 x 4x+12/6 first I took the four out from 4x +12/6 so I got x-2/x+3 x 4(x+3)/6 but now I'm not sure what to do?

Chemistry
Please help! How many moles of hydrogen are needed to triple the volume occupied by 0.25 mol of hydrogen, assuming no changes in pressure or temperature

Chem
Chemistry please help. A 20.0-L gas cylinder contains 4.80 g H2 at 25 degree celcius. what is the pressure of this gas?

com155
Imagine you are expected to write a three-page paper. Design an organizational and time management plan to complete this paper. keep in mind the paper requirements are to select a topic, write a thesis, write supporting material, and include a minimum of three sources

Algebra
Simplify A^6 x a^2b^-2 44,909 in scientific notation Simplify (a^2b^3)(a^5) Simplify x^-5y^-6 What is the P(H,H,H,H,T,T,T,) on 7 flips of a coin?

math
How do you get 5/6

Management
1. List at least FIVE sources you will use to obtain information about the firm’s strengths, weaknesses, opportunities, and threats. Discuss what categories of the SWOT elements of information are readily available on the Internet. What categories of data are difficult or...

statistics
the average number of years a person takes to complete a graduate degree program is 3. the standard deviation is 4 months. Assume the variable is normally distributed. If an individual enrolls in the program, find the probability that it will take. a) More than 4 years to ...

statistics
the average amount of rain per year in Greenville is 49 inches. the standard deviation is 8 inches. find the probability that nest year greeville will receive the following amount of rainfall. assume the variable is normally distributed. a) At most 55 inches of rain b) at ...

statistics
on the daily run of an express bus, the average number of passengers is 48. the standard deviation is 3. Assume the variable is normally distributed. find the probability that the bus will have. a) between 36 and 40 passengers b) fewer than 42 passengers c) More than 48 ...

US History
I have to do a political cartoon based on any event between the mid 1300's and 1812. But I'm having a difficult time picking out what to do it on. Does anyone have any ideas?

statistics
the average number of gallons of lemonade consumed by the football team during a game is 20, with a standard deviation of 3 gallons. assume the variable is normally distributed. when a game is played, find the probability of using a) Between 20 and 25 gallons b) less than 19 ...

statistics
there are 48 raincoats for sale at a local men clothing store. Twelve are black. If 6 raincoats are selected to be marked down, find the probability that exactly 3 will be black.

statistics
If 8% of the population of trees are elm trees, find the probability that in a sample in a sample of 100 trees, there are exactly 6 elm trees. assume the distribution is approximately Poisson

statistics
In a bowling league, the probability that the uniforms are all 1 color is 0,45, that 2 colors are used is 0.35, and that 3 or more colors are use is 0.20. if a sample of 12 uniforms is selected, find the probability that 5 contain only 1 color, 4 contain 2 colors, and 3 ...

statistics
the probability that a television containt 0, 1, or 2 defects is 0.88, 0.08, and 0.04, respectively. in a sample of 16 television, find the probability that 9 will have 0 defects, 4 will have 1 defect, and 3 will have 2 defects.

statistics
A history class has 75 members. If there is a 12% absentee rate per class meeting, find the mean, variance, and atandard deviation of the number of students who will be absent from each class

childhood education
what does research show about the child's relationship with the primary parental fugure when the child has additional attachments to other people?

Chem
does charles law depend on the identity of the gas

Chem
does charle's law depend on the identity of the gas

Chemistry
How many grams of NaCl would be required to make a 24% NaCl solution if 250 ml of water were used

Probability
Five cards are drawn from an ordinary deck without replacement. Find the probability of getting a. All red cards b. All diamonds c. All aces

Chemistry
Three solutions are mixed together to form a single solution. One contains 0.2 mol Pb(CH3COO)2, the second contains 0.1 mol Na2S, and the third contains 0.1 mol CaCl2. Write the net ionic equations for the precipitation reaction or reactions that occur.

Statistics
Cholesterol levels of adult males are approximately normally distributed with a mean of mg/dL and a listed variance of . Some researchers claim that the variance of cholesterol levels of adult males is less than . Suppose that we want to carry out a hypothesis test to see if ...

Pre-Calculus
How do I solve, in radians and degrees, 2-3sin(3(x-pi))=6?

Physics
user-generated content: report abuse What approximate change in decibels does an observer experience from a sound source if the observer moves to a new location that is 67% as far from the source? My answer choices are 23, -23, 40, 2.76, -2.76, 1.94, -1.94, 2.57, -2.57, and 0 ...

Chem Webwork UCI
Complete the table below: What is the pH of the solution created by combining 0.70 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? mL NaOH: 0.70 pH w/ HCl: 1.08 pH wHC2H3O2: 3.23 Complete the table below: What are the pH ...

Chem Webwork

Chem Webwork
Complete the table below: What are the pH values if you take into account that the 8.00 mL of 0.10 M Acid was first diluted with 100 mL of water (like it will be in the experiment you perform in lab)? mL NaOH: 0.70 pH w/ HCl: 2.14 pH w/ HC2H3O2: ??? I got pH w/ HCl, but I can...

political science
Which President developed the Policy of preemption with regard to foreign policy?

¡çLMN and ¡çNMO are adjacent angles that share MN ƒåƒåƒåƒåƒâ as a side. Together, those two angles form ¡çLMO. What equation can you write that shows the relationship between m¡...

science
What is another word for exothermic?

math
a triangle with a side of length 2/7 units and side of length 15/28 units

Trigonometry
Proof the identity 1 + sin 2x/cos 2x = cos x + sin x/ cos x - sin x

Trigonometry
If 13 sin x + 5= 0 and x є (0º; 270º) calculate the sum of 2x

Trigonometry
cos(54º-X)=sin2X

Math
If you pay 3.5 % interest over 4 years and the interest earned is \$498.40 what is the principal

trig
If an equilateral triangle has a side of 10 ft what is its altitude to two significant digits

Cal II
Intergral (27-9x^2)^(1/2) fit to theorem (a^2-u^2)^(1/2)

elapsed time
elapsed time is 2hr 37min, end time is 10:52P.M., what is the start time?

elapsed time
start 11:38a.m. elapsed time 3hr 10 min what is the end time?

Math
Using only whole numbers, how can you draw three rectangles with a perimeter of 12 units?

The area shaded is the matting and it is 64 square inches. What side length of a picture frame do you need to cover the entire picture? There is a 6inch square opening in the matting.

Chemistry
I need help on this, I don't know the answers

teaching
hello. i need help starting a pre-iep outline. i have never seen one before. thank you.

Science
Do neurons send electrical messages to the brain to tell the body what to do?

social studies
what facts are there on point of view on tariffs on imported goods

English-
What is the theme of the book NUmber 8 by Anna Fienberg?

English- Figurative Language
What type of figurative language is the following sentence? : Oh, never, if I live to a million, Shall I feel such a terrible pain.

Math
a. X is the number of tables and y is the number of chairs: 90x+40y< or = \$1000 b. i have no idea c. 3

Chemistry
2g NaHCO3 + .6 mL HCL --> NaCl+CO2+H2O How much carbon dioxide do I get? How do I find out? I got 410 mL of CO2, is this correct?

Chemistry
2g NaHCO3 + .6 mL HCL --> NaCl+CO2+H2O How much carbon dioxide do I get? How do I find out?

math
3/4 = \$0.75 1/10=\$0.10

chemistry
The combustion of propane (C3H8)produces CO2 and H20: C3H8(g)+5O2(g) 3CO2(g)+4H2O(g) Calculate the mass, in grams, of H2O that will be produced if 2.5 mol of O2 is consumed.

chemistry
The combustion of propane (C3H8)produces CO2 and H20: C3H8(g)+5O2(g) 3CO2(g)+4H2O(g) Calculate the mass, in grams, of H2O that will be produced if 2.5 mol of O2 is consumed.

PHYSICS
I used the formula, but I still don't know how to solve the problem ? Did you get it ?

Chemistry II
How much energy would be required to heat 60 grams of water from -50 degrees C to 200 degrees C?

Chemistry II
100 grams of KNO3 is dissolved in one liter of water. Calculate the freezing point depression and boiling point elevation.

english
C- unlike oak roots, maple roots often invade water lines.

double integral
1. Sketch the region of integration & reverse the order of integration. Double integral y dydz... 1st (top=1, bottom =0)... 2nd(inner) integral (top=cos(piex), bottom=(x-2)... 2. Evaluate the integral by reversing the order of integration. double integral sqrt(2+x^3) dxdy... ...

accounting
Lone Star Theatre Inc. owns and operates movie theaters throughout Arizona and Texas. Lone Star Theatre has declared the following annual dividends over a six-year period: 2005, \$7,500; 2006, \$9,000; 2007, \$30,000; 2008, \$30,000; 2009, \$40,000; and 2010, \$48,500. During the ...

Chemistry
How many moles of ethanol is contained in 250.0 ml of a 1.90M ethanol solution? A. none of these B. 7.60 C. 475 D. 0.475

chemistry
how do I prepare 50% and 70% ethanol from 95% ethanol?

Psychology
s2 pooled= 19/48 (10) + 29/48 (25)

calculus
find equation of the tangent line to the graph of f(x) at the given point f(x)=(x-1)(2x+3)/(x-5) at 9, 42

How do I go about preparing 50% ethanol and 70% ethanol from 95% ethanol?

chemisrty
calculate the percent by mass of carbon(c) in the amino acid arginine,C6H16N4.

Chemstry
Lovastatin (C24H36O5) has a molar mass of 404.53 g/m. The normal dose of the drug lovastain is 20mg. How many molecules of lovastatin (C24H36O5) are in a normal dose?

Psychology
inherited universal ideas, wishes, and memories.

ON LINE LIBRARY SOURCES
HOW CAN THE ONLINE LIBRARY HELP ME WITH FINDING MY ACEDEMIC WRITING?

algebra
-4/3x+3=

physics
What is the maximum power consumption of a 8.7 V portable CD player that draws a maximum of 354 mA of current?

physics
What is the resistance of a 2.5 m length of copper wire 1.3 mm in diameter?

Language Arts
Hello! I have to write a summary of a book that I've read, and I've been writing it, and I'm worried I'm putting in too much detail/making it too specific/too long? I wasn't sure if I'm supposed to summarize the whole plot in a couple of paragraphs, or ...

Math
List the x-intercepts for the function f(x)=ln |x-1|

Math
List the x-intercepts for the function f(x)=ln |x-1|

Math
List the x-intercepts for the function f(x)=ln |x-1|

Chemistry
A fish tank holds 40 gallons of water (density 1.00g/mL) when full. What is the mass of the water in kilograms (kg)?

Math
ok thanks!

Math
Ineed to come up with an EXCEL formula for the following; Ineed to determine the total number of games. I know the % (games) of lost and I know the number of (game) wins. I need to determine the total number of games. I can figure the % of wins by subtracting the % lost from ...

Algebra 2
what happens when the major and minor axies are exactly the same length?

math(HELP)