Tuesday
May 5, 2015

# Posts by jen

Total # Posts: 3,329

Chemistry 1002
Over a period of time, the concentration of sulfuric acid in a lead storage battery of an automobile has decreased from 38 percent by mass(density=1.29 g/mL) to 26 percent by mass(1.19 g/mL). Assume the volume of the acid remains constant at 715 mL. a)Calculate the total ...
April 19, 2015

Math
Chad buys peanuts into pound bags Siri packages them into bags that hold 56 pounds of peanuts how many 2 pound bags of peanuts should Chad by so that he can fill the 56 pound bags without having anything that's left over
April 16, 2015

Math
Suppose the speedometer of your car reads 90 km/ hr. If you are driving in the united states where the maximum speed is posted as 50 mi/ hr By how much are you exceeding the speed limit.
April 14, 2015

Math
Can someone do out the calculations for me on 7 yds , 1 ft,- 3 yds, 2 ft,= what in ft . Thanks
April 14, 2015

Math
The figure below represents a garden in which a flower bed ( inner rectangle) is to be installed. The garden ( excluding the flower bed) is to be sodded. The outer is 9' ft width and 15' ft long and the inner is 3'ft wide and 7'ft long. A) Find the area of the ...
April 14, 2015

English/grammar
Is this better Writeacher? Shortly after moving to the Wisconsin, Molly began attending Second Baptist Church. During service one day, she said she was approached by a longtime parishioner named Cynthia Givens, who was aware of Molly's unstable living condition. Cynthia ...
April 12, 2015

English/grammar
Can someone proofread my English paragraph for grammar? I'd really appreciate it. Give me advice/tips on how to make it better Shortly after her moving to the Wisconsin, Molly began attending Second Baptist Church, where during service one day, she said she was approached ...
April 12, 2015

Latin I
I need help translating it
April 11, 2015

Latin I
“Arms and the man I sing”—With these words Virgil began his poem about the origins of the Rome. The “wars” were not only the famous Trojan War, but also the wars in Italy; “the hero” is Aeneas, who traveled from Troy to a new town, New Troy, ...
April 11, 2015

math
A handful of paper clips is 5.2 grams. A handful of push pins is 500 centigram a. Which handful weighs more? So 1c equals .o1 grams so isn't it 5.2 g compared to .05 grams which then means the paper clips are heavier? Thx for any help you can provide.
April 9, 2015

Math
Trying to find the rule & equation for the function table. x= 1, 2, 3, 5, 10, 12 y= 9, 13, 17, 25, 45, 53
April 8, 2015

ENGLISH
That works, but I am going to continue to play around with it a bit. I appreciate you're help Writeacher. You've been very helpful, thank you!
April 3, 2015

ENGLISH
trying to paraphrase what they said
April 3, 2015

ENGLISH
her daily routine after work consisted of grading papers and watching TV so she was looking for ways to spend her time more "productively" after work and decided volunteering would be the best approach. I'm trying to think of a good sentence for all this information
April 3, 2015

ENGLISH
Does this sentence make sense? For Amber volunteering instilled the desire to use her time more productively and simultaneously make a difference in the community.
April 3, 2015

Calculus
If two resistors with resistances R1 and R2 are connected in parallel, as in the figure, then the total resistance R, measured in Ohms (Ω), is given by: 1/R=1/R1+1/R2 If R1 and R2 are increasing at rates of .3Ω/s and .2Ω/s, respectively, how fast is R increasing...
April 1, 2015

Calculus
1 pt) For positive constants k and g, the velocity, v, of a particle of mass m at time t is given by v=mg/k(1−e−kt/m). At what rate is the velocity is changing at time 0? At t=8? What do your answers tell you about the motion? At what rate is the velocity changing ...
April 1, 2015

geometry
An obtuse isosceles triangle has one angle with a measure of (2x) degrees and another angle (5x) degress. What is the measure of the third angle of the triangle?
March 31, 2015

English
How can I make this sentence better? or is it ok? The group offers organizations and companies access to their network of volunteers, resources to create any community-focused promotional event, and cause marketing strategies.
March 30, 2015

Chemistry 1002
Calculate the standard entropy change for the following reaction at 25 °C. 2 Al (s) + 3 ZnO (s) --> Al2O3 (s) + Zn (s) answer is in J/K mol
March 27, 2015

English
thank you for your help, Writeacher. I appreciate it.
March 26, 2015

English
Well he does volunteer as a driver of the truck. If one organization gets food items/donations that they can't use, and rather than throwing it away, he'll bring it to the other organization he volunteers for who may accept it.
March 26, 2015

English
So say like David serves as the liaison between Quality care for Children and the Salvation Army by bringing over food items that cannot be utilized at one organization to the other and vice versa. Does that sentence make sense, or how do you think it could be improved?
March 26, 2015

English
There's a volunteer worker who volunteers closely two diff organizations. If one organization receives donations and can't utilize them, he'll bring it over to the other organization that maybe can, and vice versa. Can it be said that he serves as a "liaison&...
March 26, 2015

algebra
What is the discriminant of the polynomial below? 4x2 + 4x + 1 A. 0 B. -4 C. -12 D. 32
March 18, 2015

AP style
11” x 2-1/4” pvc sleeve with cap will be permanently installed below ground level how would those numbers be transferred in ap style. I tried looking it up and I'm confused.
March 12, 2015

Physics (Kinematics)
In a television tube, the electron travels from an electron gun to the screen 0.45m away in 6.0×10exponent-9seconds. If the electron starts at rest, what is its final speed when it hots the screen? ( I have the answer,but I don't know how to get it)
March 5, 2015

Physics
d=velocity (velocity divided by time) Time So, what you're trying find is distance. Now, just fill in the equation with your data d?=340m/s 2seconds D= 170m Remember that because you have seconds on both sides of the line ( division) they cancel out each other and you'...
March 5, 2015

Chemistry
Phosphorous acid, H3PO3, is actually a diprotic acid for which Ka1 = 5.0 × 10-2 and Ka2 = 2.0 × 10-7. What are the values of [H+] and [H2PO3-] in a 2.0 M solution of H3PO3?
February 27, 2015

chem
A solution is prepared by dissolving 15.0 g of pure HC2H3O2 and 15.0 g of NaC2H3O2 in 600 mL of solution (the final volume). What is the pH of the solution?
February 22, 2015

physics
A sensitive gravimeter at a mountain observatory finds that the free-fall acceleration is 0.0070m/s2 less than that at sea level (gsealevel = 9.83 m/s2). What is the observatory's altitude? Assume Rearth = 6.37 × 106 m.
February 11, 2015

Latin I
Primo (at first), natura ab viris adorabatur. Antequam (afterwards), viri et feminae deos et deas laudabant. Tum (Then) animas naturae laudabant. Animae naturae timebantur. Viri rogabant: De quo luna (moon) venit (comes)? De quo sol (sun) venit (comes)? Quid est causa fulminis...
February 10, 2015

Latin I
1. Estne in Campania? a. where is Campania? b. he is in Campania, isn't he? c. he is not in Campania, is he? d. Is he in Campania? 2. Vesuviusne populum terruit? a. did vesuvius frighten the people? b. Vesuvius did not frighten the people, did it? c. Vesuvius did frighten ...
February 9, 2015

Physical Science
no but these are my choices A. Bi-212 B. Bi-211 C. Bi-213 D. Bi-214
February 7, 2015

Physical Science
Here are some half-lives for different isotopes of bismuth (Bi): Bi-211 — 2.1 minutes Bi-212 — 60.6 minutes Bi-213 — 45.7 minutes Bi-214 — 19.9 minutes If there are 200 grams of one isotope of bismuth, and after 60.6 minutes there are 100 grams of bismuth, ...
February 7, 2015

Physics
A football punter accelerates a 0.59 kg football from rest to a speed of 8.4 m/s in 0.17s. What constant force does the punter exert on the ball? Answer in units of N
February 6, 2015

Physics
From the window of a building, a ball is tossed from a height y0 above the ground with an initial velocity of 8.50 m/s and angle of 23.0° below the horizontal. It strikes the ground 6.00 s later. If the base of the building is taken to be the origin of the coordinates, ...
February 2, 2015

english
how does imagery help build the theme ,words can be powerful, in "A Barred Owl"?
February 1, 2015

math
Four students, Rick, Robin, Ryu, and Roy are registered for the same class and attend inde pendently of one another, Rick 96.5% of the time, Robin 93.3% of the time, Ryu 8 8.2 % of the time, and Roy 77.9 % of the time. What is the probability that on any given day a) at least...
January 30, 2015

Poetry
thanks!
January 29, 2015

Poetry
Can anyone tell me what kind of poem is "A Barred Owl"? Ex. is it a villanelle or a sonnet...? Thank you!!
January 29, 2015

Physical Science
Which of the following statements are true about chemical reactions? Check all that apply. A. Reactants are on the right when writing a chemical reaction. B. Products are produced in a reaction. C. Reactants are present at the end of a reaction. D. Products are on the right ...
January 27, 2015

science
Shoe companies imbed unique designs on bottom of the sneakers they manufacture.what is the made n purpose? A to increase potential energy B to decrease friction C increase friction D to decrease potential energy. I think its C am I correct?
January 26, 2015

math
roetopodsaoenrfir need to unscramble for a math paper
January 4, 2015

History
Hi I'm honestly stuck on these 3 questions, I looekd on wiki and everything. Please Please help me out.. What action did President Polk take that resulted in the war between the United States and Mexico? He ordered troops to invade Mexico and capture Vera Cruz and Mexico ...
December 21, 2014

algebra
w(3w-1)=200 solve for w
November 16, 2014

math
which lap has the slowest time out of these- 1.59, 1.85, or 1.64
November 16, 2014

Math
write three fractions that can be written as percents between 50% and 75%. Justify your solution.
November 13, 2014

math
what is the least common multiple of 6 and 23? I got 138 am I correct
November 11, 2014

Orgo Lab
1, 4, 7 is my answer but wrong
October 19, 2014

accounting
Accrued salaries 1 Bill’s Company Partial Worksheet For the Year Ended December 31st, 2012 Account Titles Trial Balance Adjustments Adjusted Trial Balance Debit Credit Debit Credit Debit Credit Merchandise Inv. 16 Store Supplies 10 Store Equipment 20 Accum. Depr. Store ...
October 6, 2014

Math Pre-Calc/Trig
If 11 square meters of tile are available to make a rectangle whose width must be 6 meters less than its length, what would be the dimensions of the rectangle?
September 30, 2014

math- pre calc/trig
Can you please explain that a little better, I am having a hard time understanding what you are saying
September 30, 2014

math- pre calc/trig
Find the length of each side of a square if the diagonal is 7(square root 2)? How do I solve or set up this problem?
September 30, 2014

Physics
What is the coefficient of friction between a sled and a plane inclined 30 degrees from the horizontal if the sled just slides without accelerating when given an initial push?
September 21, 2014

Math
A truck with 36-in.-diameter wheels is traveling at 55 mi/h. Find the angular speed of the wheels in rad/min, *hint convert miles to inches & hours to minutes How many revolutions per minute do the wheels make? • This question is 2 parts. I can't remember the formula ...
September 2, 2014

physics
1. what is the specific heat of an object if the heat needed to change its temperature from 40degree celsius to 75degree celsius for 75 kg of it is 536 kcal? Please show me how to oompute it.
August 13, 2014

physics
1. How many clories will be needed to change the temperature of 3kg of water from 30degree celsius to 100degree celsius? please show me how to compute this,
August 13, 2014

Can a contractor who doesn’t finish a home remodeling job get paid, even though they didn’t complete the job? BASE YOUR ANSWER ON THE CONCEPTS OF PARTIAL PERFORMANCE VS FULL PERFORMANCE, AND OFFSETTING OF AMOUNT DUE.
July 18, 2014

Statistics (Check Work)
I am so sorry! My apologizes for assuming you were a male! You have really been a great help on the few questions I have posted on here. I appreciate it so much! I did figure it out. I was going by the notes from my textbook, and they kept multiplying the p-value by 2 on every...
June 26, 2014

Statistics (Check Work)
I played around with some of the answers, and I realized my mistake. Turns out the computer just wanted me to compute the right tailed P-value. First Question: 1-0.8980=0.1020 Second Question: 1-9987=0.0013
June 26, 2014

MathGuru?
Is it possible for " MathGuru " to help with this question? Last time he provided a very detailed explanation. It really helped me understand the concepts.
June 26, 2014

Statistics (Check Work)
Can Someone help me with these 2 problems? I am certain I am solving them correctly, but for some reason the computer keeps marking my answers as incorrect. Question 1: Minnesota had the highest turnout rate of any state for the 2012 Presidential election. Political analysts ...
June 26, 2014

Statistics
One of the questions in the Pew Internet & American Life Project asked adults if they used the Internet, at least occasionally. The results showed that 454 out of 478 adults aged 18 - 29 answered yes; 741 out of 833 adults aged 30 – 49 answered yes; 1058 out of 1644 ...
June 16, 2014

Thank you so much for the help! I completely overlooked using the population correction factor.
June 16, 2014

Hi can someone check my answer. I'm not sure why the computer keeps marking it wrong. **Suppose a random sample of size 50 is selected from a population with σ = 10. Find the value of the standard error of the mean in each of the following cases (use the finite ...
June 16, 2014

Statistics
Can someone please help me answer these questions? I have tried every method I know and the computer still keeps marking the answers as incorrect. Thanks for the help! 1) If the number of 18-34 year olds sampled is equal to the value identified in part "a"(value=157...
June 10, 2014

math
rachel drove 260 miles using 12 gallons of gas. at this rate, how many gallons of gas would she need to drive 286 miles?
May 26, 2014

Calc
An Olympic-sized swimming pool is a rectangular prism that is 50m long, 25m wide, lled with water to a depth of 1.5m. We are going to pump the water out of the pool with a pump that is 0.5 meters above the surface of the water. Compare the costs of draining the pool from the ...
May 18, 2014

math
Ex (10-5)×24÷(3-2)
May 6, 2014

math
Cannot repeat, any mathematical operation
May 6, 2014

math
Using the numbers 2,3,5,10,24 write two seperate equations that equal 120
May 6, 2014

Chem
thank you!
April 25, 2014

Chem
where's it at? i couldnt find it
April 25, 2014

Chem
where's it at?
April 25, 2014

Chem
Using the standardized NaOH solution, the student weighs out 0.2550g of a solid unknown acid and finds that 28.50mL of the NaOH solution is required to reach an end point with the acid. Calculate the molar mass of the unknown acid, assuming the acid is diprotic.
April 25, 2014

Chem
Using the standardized NaOH solution, the student weighs out 0.2550g of a solid unknown acid and finds that 28.50mL of the NaOH solution is required to reach an end point with the acid. Calculate the molar mass of the unknown acid, assuming the acid is diprotic.
April 25, 2014

chem
the balance equation for the reaction of aqueous sulfuric acid with aqueous ammonia is 2NH3(aq)+ H2SO4(aq) -> (NH4)2SO4(aq) 1. what volume of 0.250M sulfuric acid solution would be needed to react completely with 18.00mL of 0.350M ammonia solution? 2. what mass of ammonium ...
April 15, 2014

Logarithmic Algebra
let log2=a, log3=b, and log5=c. express the indicated logarithm in terms of a, b, and c. log6/25 log 100
April 9, 2014

physics
Assume all angles to be exact. The critical angle between two materials is 45∘. If the angle of incidence is 35∘, what is the angle of refraction? (Consider that light can travel to the interface from either material.)
April 1, 2014

physics
An outdoor circular fish pond has a diameter of 4.00 m and a uniform full depth of 1.60 m . A fish halfway down in the pond and 0.70 m from the near side can just see the full height of a 1.80 m tall person. How far away from the edge of the pond is the person?
April 1, 2014

Physics
In certain ranges of a piano keyboard, more than one string is tuned to the same note to provide extra loudness. For example, the note at 110 Hz has two strings at this frequency. If one string slips from its normal tension of 610 N to 542.00 N, what beat frequency is heard ...
March 29, 2014

Physics
The ship in the figure below travels along a straight line parallel to the shore and a distance d = 580 m from it. The ship's radio receives simultaneous signals of the same frequency from antennas A and B, separated by a distance L = 700 m apart. The signals interfere ...
March 29, 2014

pharmacy tech
. To find out if a drug causes nausea, you would look in this section of the drug monograph
March 19, 2014

Writing Skills Writing Assignment
I am trying to complete a 750 to 1000 word essay but I completely have no clue what to write about and my writing skills is a bit lacking. It needs to be about a personal experience. I have more info if needed.This is the final paper result. Your final paper should be at least...
March 14, 2014

Chemistry 32
HCI (aq) is a strong acid. suppose you dissolved 0.0365 grams of HCI in water to give a final volume of 10.0 mL. what is the pH of this final solution. The molar mass of HCU is 36.5g /mole and the molar mass of water is 18.0g/mole
March 12, 2014

chemistry
how many grams is that?
March 3, 2014

chemistry
A student determines the cobalt(II) content of a solution by first precipitating it as cobalt(II) hydroxide, and then decomposing the hydroxide to cobalt(II) oxide by heating. How many grams of cobalt(II) oxide should the student obtain if her solution contains 46.0 mL of 0....
March 3, 2014

chemistry
i really don't have a clue
March 3, 2014

physics
Two identical small insulating balls are suspended by separate 0.17 m threads that are attached to a common point on the ceiling. Each ball has a mass of 7.40 10-4 kg. Initially the balls are uncharged and hang straight down. They are then given identical positive charges and...
February 27, 2014

physics
Two identical small insulating balls are suspended by separate 0.17 m threads that are attached to a common point on the ceiling. Each ball has a mass of 7.40 10-4 kg. Initially the balls are uncharged and hang straight down. They are then given identical positive charges and...
February 27, 2014

Physics
I only need help with part B. A 250W computer power supply is on 10 h per day. Part A If the cost of electricity is \$0.15/kWh, what is the energy cost (to the nearest dollar) if this computer is used like this for a year (365 days)? 140 dollars Part B If this power supply is ...
February 19, 2014

Behavioral Statistics
I need someone to explain HOW to do this..I don't want just the answer I have got to figure out how to do this before my mid-term, and I'm completely clueless! 3. One of the major U.S. tire makers wishes to review its warranty for their rainmaker tire. The warranty is ...
February 10, 2014

math
differnce btween eight times a number twice the number is 18
February 9, 2014

social studies (HELP !!!!!!)
@Princess Anna, @Writeacher, @Miss. Sue Please Help Me Please Help! I really don't Get It Please! ? ? ? ? It's due today! HELP! ANYONE !..... What were the positions of the Federalists and Anti- Federalists on the new Constitution? Provide at least two details ...
January 13, 2014

MATH
Find the interest earned by an account with \$1,200 of simple interest of 4% for 3 years. Find the percent markup. Round to the nearest whole percent. store's cost: \$100 selling price: \$160 Find the percent of increase. 50 to 70 Find the percent of decrease. Round your ...
January 10, 2014

math
if f(x) = sqrt x^2-1 and g(x)-sqrt x-1, which expression represents f(x)/g(x) for x>1.
January 7, 2014

science
A window glass is 0.9 m wide, 1.5 m high and 4 mm thick. During winter, the temperature of the inside face of the window is 10°C, and the outside face is at -9 °C. How much thermal power is being transported through the window? (Kr = 0.84 W/m.K)
January 7, 2014

physics
A spring-like trampoline dips down 0.08 m when a particular person stands on it. If this person jumps up to a height of 0.26 m above the top of the trampoline, how far with the trampoline compress when the person lands?
December 4, 2013

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