Thursday
December 8, 2016

# Posts by Sonya

Total # Posts: 108

Conceptual Physics
A paperback is 106mm in width. What is the width in centimeters? In meters? (I need to see this in steps)
January 14, 2016

Statistics
A doctor want to estimate the HDL cholesterol of all 20- to 29- year old females. how many subjects are needed to estimate the HDL cholesterol within 3 points with 99% confindence assuming s=15.8 based on earlier studies?
June 12, 2015

solution making/ chemistry/biotech
You have 750ml's of a solution that was originally made up using a 20X stock. How much stock was used? I think the answer is 3.75 by dividing 750/20 but I am not sure
February 23, 2015

chemistry
one piece of copper metal at 105 C has twice the mass of another copper piece at 45 C. What is the final temperature if these two pieces are placed in a calorimeter. Specific heat of copper is 0.387 J/g.K.
October 20, 2014

solution making/ chemistry/biotech
so how would I find the percentage of that solution
September 30, 2014

solution making/ chemistry/biotech
how much of a .2M solution can you make with 340 g of calcium carbonate ( MW=100.0869) Do I multiply 340g by 1mole/MW
September 30, 2014

math
A bicyclist rides off a roof at 15.2 \frac{m}{s}. The roof is 9.8 m above the ground. How far from the edge of the building does the bicyclist land? Use SI units in the second box.
September 15, 2014

math
A train is going directly South at 60 mph. An action-movie star is atop the train, running North at 6 mph. Relative to someone standing on the ground, how fast is the action-movie star moving, and in what direction? North is positive and South is negative. Use SI units in your...
September 15, 2014

math
You fire your potato gun horizontally from shoulder height, which is 190 cm above the ground. The potato strikes the ground 30 m away from you. What was the initial speed of the potato?
September 15, 2014

math
Sue stacked one box onto another. The bottom box had the height of 2 1/3 feet and the top box had the height of 3 2/3 feet. How tall were the stacked boxes?
June 19, 2014

Science
Oomploompa is right thank thank thank thank YOUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUH!
June 4, 2014

sports marketing
5755050
May 22, 2014

Physics
A small block with a mass of m = 0.120 kg is attached to a cord passing through a hole in a frictionless, horizontal surface. The block is originally revolving at a distance of 0.40 m from the hole with a speed of 0.70 m/s. The cord is pulled from below, shortening the radius ...
May 20, 2014

Physics
A force of 800 N stretches a spring a distance 0.200 m horizontally. a) What is the potential energy of the spring when it is stretched 0.200m b) What is its potential energy when it is compressed 5.00cm This is a conservation of energy problems. The potential is elastic and ...
May 20, 2014

Chemistry
Determine [Zn2 ], [CN–], and [HCN] in a saturated solution of Zn(CN)2 with a fixed pH of 2.640. The Ksp for Zn(CN)2 is 3.0 × 10–16. The Ka for HCN is 6.2 × 10–10. I need to know what equations to use to find the answer not just how to get it
February 23, 2014

Chemistry
replace the 7.77 with 9.23 answer in end in 5.20 x 10^-6
February 20, 2014

Chemistry
Pb(NO3)2 => Pb2+ + 2 NO3- [Pb2+] = [Pb(NO3)2] = 7.77 mM = 7.77 x 10-3 M Pb(IO3)2 <=> Pb2+ + 2 IO3- Ksp = [Pb2+][IO3-]2 = 2.5 x 10-13 7.77 x 10-3 x [IO3-]2 = 2.5 x 10-13 [IO3-] = 5.67 x 10-6 M ˜ 5.7 x 10-6 M
February 20, 2014

Chemistry
Calculate the concentration of IO3– in a 9.23 mM Pb(NO3)2 solution saturated with Pb(IO3)2. The Ksp of Pb(IO3)2 is 2.5 × 10-13. Assume that Pb(IO3)2 is a negligible source of Pb2 compared to Pb(NO3)2.
February 20, 2014

ashford unversity
Which of the following is true regarding an SEP?
May 20, 2013

chemsitry
you start with 150.0g of pentane and 500.0L of O2. how many grams of H2O will you make?
March 29, 2013

math
winnie has 7 trophies she wants to display in arrays. how many different arrays are possible? explain.
February 5, 2013

AP Chem
The electron-domain geometry and molecular geometry of iodine trichloride are __________ and __________, respectively. The answer is trigonal bipyramidal, T-shaped, respectively- I do not understand the approach PLEASE EXPLAIN HOW YOU GOT THE ANSWER!!!
January 29, 2013

i don't understand how you got that though? That is the answer though.
January 29, 2013

The electron-domain geometry and molecular geometry of iodine trichloride are __________ and __________, respectively. The answer is trigonal bipyramidal, T-shaped, respectively- I do not understand the approach
January 29, 2013

The electron-domain geometry and molecular geometry of iodine trichloride are __________ and __________, respectively.
January 29, 2013

chemistry
a container has the dimensions of 2.5 m x50 cm x60 mm. It is filled with water at 0.0 degrees celsius,how many kilocalories will be necessary to heat the water to boiling point?
January 20, 2013

Geometry
Jason designed an arch made of wrought iron for the top of a mall entrance. The 11 segments between the two concentric circles are each 1.25 m long. Find the total length of wrought iron used to make the structure. Round the answer to the nearest meter.
January 14, 2013

CIS/Visual Logic
Design an application that accepts 10 numbers and displays them in descending order. Us an array to store the numbers and Bubble Sort to sort the numbers.
November 25, 2012

Algebra 106
Steve, if compounded monthly for 10 yeays how do i calculate it
November 10, 2012

Algebra 106
$625.00 investested in retirement fund for 10 years @ 3.84% compounded November 10, 2012 Program Logic Design create a flowchart that shows the logic for a program that generates a random number; then ask the user to think of a number between 1 and 10. The display then randomly generated number so the user can see whether his or her guess was accurate. October 19, 2012 Math If I make a porch that is 60 feet in length, 50 feet wide and 4 inches deep, how do I calculate the area, perimeter, and surface area of the porch? Can I multiply feet and inches in the same equation? October 15, 2012 CIS Draw a flowchart or write pseudocode to represent the logic of a program that allows the user to enter a value. The program multiplies the value by 10 and outputs the result. October 11, 2012 Order of Operations 8+6(7-4)/9 7-4=3 8+6*3/9 8+18/9 8+2=10 Your answer is 10 September 11, 2012 Math 8R Because integers are negative or positive whole numbers they can never be rational or irrational numbers. September 11, 2012 Criminal justice Write a 700- to 1,050-word paper in which you describe the issues facing police departments in today’s society. Include a description of how local, state, and federal law enforcement agencies currently interact with the U.S. Department of Homeland Security (DHS). Include ... July 14, 2012 Economics The company estimates the probability of no damage to be 0.60, the probability of damage between$0 and $10,000 to be 0.25, and the probability of damage between$10,000 and $25,000 to be 0.12. If the company wants to make a profit of$200 above the expected cost, what should...
July 1, 2012

math
what is the stopping distance for a car traveling at 40 mph
May 2, 2012

univ/com/155
write a paragraph of instructions on the writing process for future com/155 students.include the steps in the writing process.
April 26, 2012

Algebra 2
What is the angular speed in radians per second of the hour hand of a clock? If the hand is 5cm long, how fast is the tip moving in millimeters per second?
April 22, 2012

Humanities/World Literature
1.Why does the demon collect her lovers' rings in _1001 Nights_? 2.What is the purpose of Shahryar and Shahzaman's journey in _1001 Nights_?
March 4, 2012

Humanities/World Literature
Why, according to the Quran, does God cause Israel to wander the desert for 40 years?
March 4, 2012

U.S HISTORY
How did World War II affect American sensibilities including the way Americans viewed the war and themselves?
January 17, 2012

A college professor told her students, “The purpose of a management course is to teach students about management, not to teach them to be managers.” Do you agree or disagree with this statement? Why or Why not? Also, is efficiency and effectiveness more important to ...
December 3, 2011

chemistry
How many grams of NaOh are required to neutralize 15.0mL 0f 0.85M HCl. Show calculations please
November 11, 2011

chemistry
Sorryy but I still don't understand will you show the calculations for my previous question
November 11, 2011

chemistry
Thanks alot! So Ma x Va= Mb x Vb or Ma=MbVb/Va :)
November 11, 2011

chemistry
how many mL of 0.15 M NaOH solution are required to neutralize 35.00 mL of 0.22 M HCl
November 11, 2011

math
What is
September 1, 2011

Physics
A horizontal pipe narrows from a diameter of 10 to 5 cm. For an incompressible fluid flowing from the larger diameter to the smaller: Question 5 options: 1.the velocity and pressure both increase. 2.the velocity increases and the pressure decreases. 3.the velocity decreases ...
August 10, 2011

I got 25.5 for the (I) one Could you help me with the (II) and (III)
August 10, 2011

The cross-sectional area of the U-tube shown below is uniform and is equal to one square centimeter (1.00cm^2). One end is open to the atmosphere. Atmosphere pressure may be taken as P1=1.01 * 10^5 Pa. The other end of the U-tube is connected to a pipe in which a constant gas ...
August 10, 2011

Physics _ College
A 50 cm long hollow glass cylinder is open at both ends and is suspended in air. A source of sounds that produces a pure frequency is placed close to one end of the tube. The frequency is placed close to one end of the tube. The frequency of the sound source is slowly ...
August 10, 2011

physics 3U
An arrow is accelerated for a displacement of 75cm [fwd] while it is on the bow. If the arrow leaves the bow at a velocity of 75m/s [fwd], what is the average acceleration while on the bow?
July 6, 2011

A and P
The following is a template strand of DNA with a start codon(=!!!) and a stop codon(=???): !!!TCGGGCTACAAAACAAATCAACGGGGCTCGCAAACAAATAAACGG??? What is its mRNA nucleotide sequence? Indicate the product of this DNA segment/gene. What is the product’s primary structure? How...
June 10, 2011

algebra
Determine whether each pair of equations represents parallel lines 3x=5y-2 and 10y=4-6x
June 9, 2011

Literature
What literature do you consider to be part of the United States' current literary canon, and why? How do those selections reflect the cultural tradition of the United States? What do you consider to be part of your personal literary canon?
April 3, 2011

Chemistry
Determinne the amount of Dextrose and NaCl in 500ml of 5% DNS. (The solution is 5% in regards to dextrose and 0.9% in regards to NACl.)
March 14, 2011

Math
yes thanks
February 16, 2011

Math
In solving the eqaution(x+4)(x-4),Eric stated thatthe solution would be x+4=33=>x=29 or (x-4)=33=>x=37 However, at least one of these solutions fails to work when substituted back into the original eqaution. Why is that?Help Eric to understand better,solve the problem ...
February 16, 2011

Chemistry
Calculate the molarity of an aqueous NaOH soultion if 32.00ml of it is required to titrate. 0.6789 g of oxalic acid to phenolphthalein end point. The balanced chemical equation is H2C2O4 + 2NaOH-> Na2C2O4 + 2H2O
December 6, 2010

algebra 2
anyoneee?
November 30, 2010

algebra 2
3. Identify the range of y=|x|-4 A. [x|x≥4] B. [y|y≥-4] C. [y|y≥0] D. all real numbers I'm confused about this question, any help???
November 30, 2010

algebra 2
thanks!
November 30, 2010

algebra 2
Find the x-intercept and the y-intercept of the graph of: 4x-2y=8 a. (2, -4) b. -4;2 c. (4, -2) d. 2;-4 I'm stuck between a and d. anyone helpp?
November 30, 2010

algebra
I'm confused now, your saying it's d now?
November 30, 2010

algebra
so it's choice A? yeah i agree with you, I didn't know which one to choose, made it more confusing.
November 30, 2010

algebra
Find the x-intercept and the y-intercept of the graph of: 4x-2y=8 a. (2, -4) b. -4;2 c. (4, -2) d. 2;-4 I'm stuck between a and d. anyone helpp?
November 30, 2010

physics
A 400 calorie quantitiy of heat is added to 20 grams of water and as a result, the water reaches a final temp of 70 deg. C. The starting temp of the water was most nearly _____ deg C.
November 12, 2010

physics
A 5 kg block of average density .625 kg/m^3 has a volume of about _____ cu. m
November 12, 2010

physics
A certain wave is incident on an interface at an angle of 40 deg. The wave emerges into the other material at an angle of 30 deg. Crossing the interface, the wave: a. increased speed b. reduced speed c. maintained constant
November 12, 2010

physics
Graph #1 is a parabola. Graph #2 is a hyperbola. a. Only graph 1 may possibly represent Hooke's law b. Only graph 2 may possibly represent Hooke's law c. neither
November 12, 2010

Chemistry
calculate the theoretical yield (in grams) of the solid product, assuming that you use 1.0 g FeC2O4×2H2O and that oxygen is the excess reactant. FeC2O4×2H2O (s) + O2(g) ---> FeO(s) + H2O(g) + CO2(g) Its balanced equation is 2FeC2O4×2H2O (s) + O2(g)---->...
October 14, 2010

english
describe your experience with credit card in a brief paragraph using 5 adverb and 5 adjective
September 22, 2010

umuc
sample of 80 people randomly asked in casino shows that average lost per person is $160 with a sample standard deviation s=$40. Based on this data create a 95% confidence interval for population mean.
July 18, 2010

math
Please explain how to get the answer. At the animal shelter, 1/3 of the animals are dogs, 2/12 are cats, and 19 are other animals. How many animals are at the shelter? I said 1/3x + 2/12x + 19 = 4/12x + 2/12x = 19= 6/12x = 19 1/2x = 19 x =
May 13, 2010

Genetics/Biology
That doesn't help.
March 18, 2010

Genetics/Biology
Recombination frequencies a. arise from completely random genetic exchange. b. are the same for all genes. c. decrease with distance. d. are the same for cis and trans heterozygotes.
March 18, 2010

math214
Joe’s baseball team sold 200 chances to win a $250 set of golf clubs. What is the expected value of a single chance if only one chance wins? March 9, 2010 poetry i need to write an acrostic poem for english using the quote:"do all lawyers defend negros". its from to kill a mocking bird and i need to write a phras starting with each letter in the quote and i cnt think of anything January 12, 2010 Math 1) If you have an inhomogeneous, linear equation like f''(x) + f'(x) + f = x you can find the general solution by finding a particular solution (with no constants of integration)to this equation and adding it to the general solution to the homogeneous equation f&#... September 19, 2009 Physics A spaceship approaches Starbase Beta with an initial velocity moving in the +x direction. The ensign sets the ship’s computer to initiate a braking program starting at time t = 0. After this time the computer controls the ship’s x-velocity according to until the ship... September 19, 2009 Physics (a)A car travels exactly once around a circle of radius 5.0 m at constant speed of 3.0 m/s. What is the car’s average velocity (magnitude and direction) during this interval? Explain/justify. (b)Repeat the calculation of average velocity if the car travels halfway around ... September 19, 2009 Physics A car is traveling over the top of a hill, which we will model to be a piece of a circular arc of radius R. For each case below, draw careful to-scale motion maps and use them to construct the velocity vectors at the following three points: the top of the hill; equal time ... September 19, 2009 History Compare the European settlements in the Chesapeake area and New England in terms of goals, governments, social structures, and religions. What similarities do you find most remarkable? What differences do you find interesting? information please May 2, 2009 History Can you tell me were, I can find information. April 28, 2009 History Historians often encounter difficulties when researching and interpreting the past. How does this influence the way people view history? April 28, 2009 Arithmetic How can we put parentheses around the following expression so that the answer is 105? 9 + 8 x 7 - 6 x 5 + 4 x 3 + 2 November 18, 2008 grade 11 maths plz help!!! The drama club plans to attend a professional production. From 10 to 35 students will go. There is a one-time handling fee of$3. each ticket costs $25 plus$2 surcharges. Write a linear function that models this situation. (show your work)
September 21, 2008

Algebra1
when using multiplying by 1 to find an expression equivalent to 18/7 with a denominator of 28x, the equivalent expression that I get is 4x/28x and i am being told that that's wrong
July 25, 2008

algebra
I am given the perimeter of the rectangle. It is 96cm. The length is 3 times the width. What are the measurements of the 4 sides of the rectangle? I need the formula please.The answer is 12 and 36, I think.
May 5, 2008

Math -please check me
what is the perimeter of a rectangle if the length is 5/9 cm and the width is 2/9 cm? a. 5/9 cm b. 1 5/9cm c. 7/9 cm d. 1 7/9 cm the answer I got was 14/9 please help me.
March 28, 2008

Math - please double check me
There are 42 accounting classes with 31 students in each class. Estimate the total number of students in the accounting classes. a. 1200 b. 900 c. 1600 d. 1500 answer: c One kilometer is equal to 1000 meters. What fractional part of a kilometer is 500 meters? Simply your ...
March 28, 2008

what is the greatest common factor of 245, 385, and 539
March 27, 2008

Math
Please help Which of the following numbers are integers 2/3, 35, 0.093, -650, 42.5 Determine the maximum and minimum values of the following set of numbers 3. -36/7, -1, -2/3, 5/4, -5, 26/9
March 22, 2008

Accounting 11
What all goes on cash flow statement using an indirect method? How would it show on the sheet?
February 24, 2008

Accounting 11
I need help completing a statement of cash flow using the indirect method.
February 24, 2008

Math
I need help please A computer can execute 64 instructions per second. How many instructions can it execute in 10 minutes? Multiply 3 1/6 x 9/11 x 6/17. Write the answer in simplest form Divide 6/25 / 2/15. Write the result in simplest form.
February 9, 2008

math
simple form 3 ¾ / 60,000= 41 ½ / 3 ¾ A computer can excute 36 instructions per microscecond. How many instructions can it execute in 4 min?
February 5, 2008

1. Pages:
2. 1
3. 2
4. Next>>