Tuesday

July 7, 2015

July 7, 2015

Total # Posts: 1,316

**Chemistry - PLEASE HELP!!!**

25g NaOH is dissolved in 10 ml h20 and added to 100 ml volumetric flask. Calculate the concentration in molarity.
*May 17, 2015*

**Personal Finance**

The Hernandez family is experiencing some financial pressures, even though the couple has a combined income of $66,000. Also, their eldest son, Joseph, will start college in only three years. Maria is contemplating going to work full time to add about $25,000 to the family'...
*May 14, 2015*

**Math Please Check My Answer**

Did you get this question right please answer ASAP! Thanks!
*May 7, 2015*

**science**

So I found the pressure of each one by foing 50.0 atm* 0.96 for N2 and got 48 atm. For PH2 I did 0.0035 * 50.0= 0.175 atm. For PNH3 0.03506* 50.0= 1.1753 atm, but I feel like I did something wrong because I don't know where to go from here
*April 16, 2015*

**science**

A mixture of nitrogen gas, hydrogen gas and ammonia gas reacts by: N2(g) + 3H2(g) = 2NH3(g) If the total pressure in the reaction vessel is 50.0 atm ans the equilibrium mixture contains by volume: N2= 96.143% H2= 0.3506% NH3= 3.506% what is the equilibrium constant (Kp)?
*April 16, 2015*

**Chmistry**

pcl3(g) cl2(g) ¨ <--- pcl5(g) Energy Some PCl3 and Cl2 are mixed in a container at 200 degrees celius and the system reaches equilibrium according to the equation above. Which of the following causes and increase in the number of moles of PCl5 present at ...
*April 16, 2015*

**MATH EQUATIONS**

Just learned equations and want to know if i am doing right 4 problems. 4y= 2x-2 2y=2x6 ans (-7,-4) x+2y=7 3x-2y= -11 ans (-1,4) 4x-3y= -20 5x-7y= -64 ans (4,12) 2x-5y=-1 3x+2y=8 ans (2,1)
*March 15, 2015*

**Math - Equations**

Just learned equations and want to know if i am doing write.. 4y= 2x-2 2y=2x6 ans (-7,-4) x+2y=7 3x-2y= -11
*March 15, 2015*

**Algebra**

In an arithmetic sequence where a6=13 and a10=25, what is the explicit formula for the general term an?
*March 12, 2015*

**Chemistry**

Help i am trying to plot data and then determine the best value of R. my data P(atm) 2.014,2.797,3.571,4.114 and V(L) 21.153,15.231,11930,10.355. there is more data but if I am given the process at starting place I would like to complete myself. thank you
*March 4, 2015*

**Religion**

"The Ethics of Belief" by W.T Clifford. Write an essay that describes his attitude towards belief. Be sure to address the following issues: 1. why does Clifford say what we believe is not merely a private matter, but a moral issue? 2. What is morally permissible for...
*March 4, 2015*

**statistics**

Suppose for the same 3000 women, we also measured their weight. Suppose the data were again normally distributed. The average weight is 143 lbs., and the standard deviation is 30 lbs. Suppose the correlation between height and weight is r = +.69. What is the slope of the best-...
*March 1, 2015*

**statistics**

can you at least explain what i can do in order to ge the answer to g-j?
*February 22, 2015*

**statistics**

Consider the following situation, and answer each of the following multiple choice questions. In your write-up, just list the sub-question letter (A-J) and your answer – no need to restate the question or to justify your answer. Situation: You have 400 data points, which ...
*February 22, 2015*

**accounting**

what accounts are affected when you invest in additional equipment for the business?
*February 8, 2015*

**Is this right**

An oxygen molecule consists of two oxygen atoms whose total mass is 5.3 x 10-26 kg and whose moment of inertia about an axis perpendicular to the line joining the two atoms, midway between them, is 1.82 × 10-46 kg·m2. From these data, estimate the effective ...
*February 5, 2015*

**math**

18 children are present in class, 1/4 are absent. How many children are there in the class altogether?
*February 4, 2015*

**delete post please**

Please delete my post Posted by Marie on Thursday, January 29, 2015 at 3:59pm.
*January 30, 2015*

**English**

Sorry the way this essay is appears is different from how I typed it. I indented and left spaces....
*January 29, 2015*

**English**

Hi! I made an essay please tell me what I am missed or how I did. And how can I improve it. Also does it sound good enough for a University student? btw I have a request if you can delete this essay after giving feedback because it's personal and private please understand...
*January 29, 2015*

**Math - Problem solving**

I did guess and check and would like to know how to set up an equation.
*January 27, 2015*

**Math - Problem solving**

I used the guess and check method for solving this problem but would like to know how to set up the equation. A camp counselor buys granola bars and juice drinks for the campers. She decides to buy 3 times as many drinks as granola bars. Predict how many of each she can buy on...
*January 27, 2015*

**Math - Problem solving**

Thanks. Membership last year was $60 and membership this year is $80.
*January 27, 2015*

**Math - Problem solving**

How do I solve this type of problem? How many steps are there. The cost of a membership at a health club last year was 75% of the cost at the club this year. This year's membership costs $20 more than last year's membership. Find the cost of a membership last year and ...
*January 27, 2015*

**Physics **

A 6.6 g bullet is stopped in a block of wood (mw = 6 kg). The speed of the bullet-pluswood combination immediately after the collision is 0.8 m/s. What was the original speed of the bullet? Answer in units of m/s.
*January 26, 2015*

**Physics**

Two students on roller skates stand face-toface, then push each other away. One student has a mass of 96 kg and the second student 56 kg. Find the ratio of the magnitude of the first student’s velocity to the magnitude of the second student’s velocity.
*January 24, 2015*

**science**

Which cells identify as the ones most likely to hold the key to increased human longevity and vitality and how might this work? Describe one alternative to cloning
*January 16, 2015*

**health**

What are some arguments against extending human life? Please describe at least one objection and one objection from your research and experience.
*January 16, 2015*

**Calculus**

Evaluate using the sum of a finite geometric series: The sum of 2^i on the range from i = 1 to n. Please Help! I don't know how to make the exponent in 2^i = to i-1!
*January 10, 2015*

**Math**

Ok..great..thx for checking.
*January 1, 2015*

**Math**

Reiny ..thanks for the formula and example. I tried it and i get that both sets of triangles are congruent but it is multiple choice with one answer. I dont know what i am doing wrong. How do I determine which two triangles on a graph are congruent. ∆QRS and ∆DEF ...
*January 1, 2015*

**Physics**

Starting from Newton’s law of universal gravitation, show how to find the speed of the moon in its orbit from the earth-moon distance of 3.9 × 108 m and the earth’s mass. Assume the orbit is a circle. So I calculated this and got 1.0 km/s, I was just wondering ...
*December 31, 2014*

**MATH**

Thanks. I used the distance formula but i am getting that both sets are congruent but there is only one answer and I don't know what i did wrong.
*December 31, 2014*

**MATH**

I entered the wrong coordinates in a previous question, i corrected down below. How do I determine which two triangles on a graph are congruent. ∆QRS and ∆DEF or ∆ABC and ∆XYZ. i found the coordinates of both sets: QRS Q(-2,5), R(-2,1), S(-5, 1) DEF D(5...
*December 31, 2014*

**Math**

What is the distance formula?
*December 30, 2014*

**Math**

How do I determine which two triangles on a graph are congruent. ∆QRS and ∆DEF or ∆ABC and ∆XYZ. i found the coordinates of both sets: QRS Q(-2,5), R(-2,1), S(-5, 1) DEF D(5,-5), E(5,-2), F(2,-2) or ABC A(4,5), B(6,2), C(2,2) XYZ X(-4,-5), Y(-6,-2), Z(-...
*December 30, 2014*

**Math**

∆ABChas vertices A(–1, –2), B(–4, –4), and C(–3, –5). Graph ∆ABC and its image after a reflection over the x-axis. Name the coordinates of the vertices of the reflected triangle...is it A(1,-2), B(3, -4), C(2,-5) or A(-1,2), B(-3,4), C...
*December 29, 2014*

**NEED HELP ASAP PHYSICS**

A car traveling 16.0m/s crashes into concrete embankment and stops in 0.08s. Calculate: the initial speed in mi/hr the average acceleration of the car during the collision in m/s^2 Please show all work than you
*December 19, 2014*

**PHYSICS NEED HELP ASAP**

A car traveling 16.0m/s crates into concrete embankment and steps in 0.08s. Calculate: the initial speed in mi/hr the average acceleration of the car during the collision in m/s^2 Please show all work than you
*December 19, 2014*

**Algebra**

Solve the following system of equations using the substitution method:5x-7y=-18 and 4x+3y=20
*December 13, 2014*

**Physics help**

A soccer player kicks a soccer ball at +10.0 m/s at an angle of 60°. What are the horizontal and vertical components of velocity of the kick? So I got; vx = +8.66 m/s and vy = +5.00 m/s but I feel like I might have gotten the + and - wrongs..Did I mess up on them or did I ...
*December 11, 2014*

**Math**

Find an equation of the parabola that has the indicated vertex and whose graph passes through the given point Vertex:2,-1 Point:4,-3
*December 6, 2014*

**Stock question**

Thanks
*November 13, 2014*

**Stock question**

I have to write about the positive effects of an investor buying stocks of a company but I would like to know about the negative affects so I could add them to my essay but I cant really understand how it could be bad for an investor to buy a stock of a company,.. could you ...
*November 13, 2014*

**english**

The fishing having become so poor, we packed up camp and moved to another lake. past participial phrase noun clause adverb clause nominative absolute elliptical clause
*November 7, 2014*

**statistics**

Siegel found that elderly people who owned dogs were less likely to pay visits to their doctors after upsetting events than were those who didn’t own pets. Similarly, consider the following hypothetical data. A sample of elderly dog owners is compared to a similar group (...
*November 5, 2014*

**Finance**

2. Jamie Thompson is thinking about investing in some residential income-producing property that she can purchase for $200,000. Jamie can either pay cash for the full amount of the property or put up $50,000 of her own money and borrow the remaining $150,000 at 8% interest. ...
*November 2, 2014*

**Calculus**

You don't have to derive anything?
*November 2, 2014*

**Calculus**

Two lovers have a spat and swear they will never see each other again. The girl walks due south at 6 mph while the boy walks at 10 mph on a heading of North 60 degrees West. How fast is the distance between them changing 30 minutes later?
*November 2, 2014*

**Calculus**

Consider the closed curve in the xy plane: 2x^2-2xy+y^3=14 a) show that dy/dx=2y-4x/3y^2-2x (I got this part) b) find equation lines to the curve when y=2 c) if the point (2.5, k) is on the curve, use part b to find the best approximation of the value of k
*October 20, 2014*

**Calculus**

Consider the closed curve in the day plane: 2x^2-2xy+y^3=14 a) show that dy/dx=2y-4x/3y^2-2x (I got this part) b) find equation lines to the curve when y=2 c) if the point (2.5, k) is on the curve, use part b to find the best approximation of the value of k
*October 20, 2014*

**soc 120**

Florynce Kennedy would agree with which statement? Making abortion illegal is the result of continual undermining of women’s rights. If men could get pregnant, abortion would be illegal. Women have had historical power to make decisions about legislation that relates to ...
*October 14, 2014*

**Chemistry **

Calculate amount of 1 M acetic acid and 1M sodium acetate necessary to prepare 50 ml of a 0.15 M buffer at ph 4.80. (pka acetic acid =4.74)
*October 8, 2014*

**physics**

This question is also frustrating me. I just don't a single clue how to do it. A pilot must fly his plane north with a speed of 550 km/hr. A wind of 138 km/hr is blowing at an angle of 31 degrees N of E . What speed does the plane need to keep the desired ground velocity?
*October 8, 2014*

**physics**

A boat must head due north across a river channel that has a current of 9 km/hr towards the west. The boat is capable of traveling at 28 km/hr in still water. If the boat heads into the current to keep its true north course, what will be the resultant velocity of the boat? I&#...
*October 8, 2014*

**physics**

A bicyclist is pedaling along a road that is sloped upward with angle theta. At which of these road elevation angles must the bicycle wheels exert the greatest force back on the road to move the bicycle forward at the same constant speed?
*October 8, 2014*

**science**

The energy of a mole of photons with frequency 6.00x10^14Hz is what in kJ?
*September 24, 2014*

**Algebra**

Simplify (4-2i/-10+5i) x (3-i/-3+i)
*September 22, 2014*

**Algebra**

Solve -16t^2-8t=10 by completing the square
*September 22, 2014*

**Physics**

The velocity of the transverse waves produced by an earthquake is 6.13 km/s, while that of the longitudinal waves is 9.9919km/s. A seismograph records the arrival of the transverse waves 61.5 seconds after that of the longitudinal waves. How far away was the earthquake? ...
*September 21, 2014*

**eng 122**

Question 6. 6. When using the BEAM style of evaluation, which of the following is UNLIKELY to occur? (Points : 1) Writers will probably
*August 18, 2014*

**math**

what is the difference of complementary and supplementary angles if an acute angle measures 2a+3b
*July 4, 2014*

**english**

I still can`t think of a adjective compound that stands behind the noun... Is it possible that somethink like this exisct? because adjectives give nearer information to nouns and therefor they stand before them, or?
*July 3, 2014*

**english**

can you think of any other compound behind a noun that is written with a hyphen?
*July 3, 2014*

**english**

can you built a sentence where t-none stands after the noun?
*July 3, 2014*

**english**

I saw this page, too but wasn't sure wether it is a always the case that it isen't hypaneted. Dict.leocsaid that there are some cases where it is written with hyphen... Tbe explanation said something like if it is commen to write the word with hyphencit is writtencwoth...
*July 3, 2014*

**english**

Hey everybody, I have a question about compounds... I think I illustrate it to you best with an example: in "an off-campus apartment" off-campus is written with a hyphen BUT in "The apartment is off campus" we wirte it without an campus. why is it that way...
*July 3, 2014*

**chemistry**

What volume of a 0.610 M NH4I solution is required to react with 525 mL of a 0.300 M Pb(NO3)2 solution?
*June 23, 2014*

**chem**

how many NaOH are needed to to react with 98.1 mol AlO3
*June 22, 2014*

**accounting**

As part of their divorce agreement , Harry transfers to Mary, his former spouse, GM stock with a market value of 30000, Harry had $20000 invested in the stock. How does this transfer affect Harry and what is Mary’s basis in the stock.
*June 12, 2014*

**Algebra confused/Thank you**

The function h(x) =1/98x^2 describe the height of part of a roller coaster track where x is the horizontal distance in feet from the center of this section of the track the towers that support this part of the track are the same height and are 150ft apart what is the best ...
*June 7, 2014*

**British Literature**

Compare and contrast Samuel pepys's style in his diary entries and Jonathan swifts style in Gulliver's travels. Both John Bunyan and Jonathan swift criticized society. Compare and contrast John Bunyan style in the pilgrims progress and Jonathan swifts style in Gulliver...
*May 28, 2014*

**Business math**

The Treasury Department auctioned $21 billion in 3-month bills in denominations of $10,000 at a discount rate of 4.965%. What would be the effective rate of interest? (Use calendar year. Do not round intermediate calculations. Round your answer to the nearest hundredth ...
*April 7, 2014*

**business Math**

Please help? The Treasury Department auctioned $21 billion in 3-month bills in denominations of $10,000 at a discount rate of 4.965%. What would be the effective rate of interest? (Use calendar year. Do not round intermediate calculations. Round your answer to the nearest ...
*April 7, 2014*

**business Math**

Carl Sonntag wanted to compare what proceeds he would receive with a simple interest note versus a simple discount note. Both had the same terms: $19,500 at 8% for 2 years. Use ordinary interest as needed. a. Calculate the simple interest note proceeds. Can someone help me? ...
*April 7, 2014*

**business Math**

You were offered the opportunity to purchase either a simple interest note or a simple discount note with the following terms: $33,353 at 7% for 18 months. a. Calculate the effective interest rate. (Do not round intermediate calculations. Round your final answer to the ...
*April 7, 2014*

**Business Math**

Can someone help me with this problem: On September 5, Sheffield Company discounted at Sunshine Bank a $9,000 (maturity value), 120-day note dated June 5. Sunshineâ€™s discount rate was 9%. (Use Days in a year table.) What proceeds did Sheffield Company receive...
*April 7, 2014*

**business Math**

Abe Wolf bought a new kitchen set at Sears. Abe paid off the loan after 60 days with an interest charge of $9. If Sears charges 10% interest. What did Abe pay for the kitchen set? (Use 360 days a year. Do not round intermediate calculations.)
*April 3, 2014*

**business mat**

Abe Wolf bought a new kitchen set at Sears. Abe paid off the loan after 60 days with an interest charge of $9. If Sears charges 10% interest. What did Abe pay for the kitchen set? (Use 360 days a year. Do not round intermediate calculations.)
*April 2, 2014*

**business mat**

Carol Miller went to Europe and forgot to pay her $740 mortgage payment on her New Hampshire ski house. For her 59 days overdue on her payment, the bank charged her a penalty of $15. What was the rate of interest charged by the bank?
*April 2, 2014*

**business mat**

On September 14, Jennifer Rick went to Park Bank to borrow $2,500 at formula9.mml interest. Jennifer plans to repay the loan on January 27. Assume the loan is on ordinary interest. (Use Days in a year table.) a. What interest will Jennifer owe on January 27? (Do not round ...
*April 2, 2014*

**business Math**

Lane French had a bad credit rating and went to a local cash center. He took out a $100 loan payable in two weeks at $115. What is the percent of interest paid on this loan? (Do not round intermediate calculations. Round your answer to the nearest whole percent.)
*April 2, 2014*

**Business Math**

Joanne and Ed Greenwood built a new barn with an attached arena. To finance the loan, they paid $1,307 interest on $45,000 at 4.0%. What was the time, using exact interest? (Do not round intermediate calculations. Round up your answer to the nearest day.) Please help!
*April 2, 2014*

**math angles**

thank you ms. sue
*April 1, 2014*

**Calculus **

You are given a piece of sheet metal that is twice as long as it is wide an has an area of 800m^2. Find the dimensions of the rectangular box that would contain a max volume if it were constructed from this piece of metal by cutting out squares of equal area at all four ...
*March 26, 2014*

**english**

Identify the number of independent and subordinate clauses in the following group of words. If you could come in on Sunday, that would be great
*March 25, 2014*

**Physics**

You have been asked to design a "ballistic spring system" to measure the speed of bullets. A bullet of mass m is fired into a block of mass M. The block, with the embedded bullet, then slides across a frictionless table and collides with a horizontal spring whose ...
*March 23, 2014*

**english**

17. In which sentence is the word but used as a preposition? A. John liked baseball but not football. B. We would like to visit the Grand Canyon, but our vacation time is up. C. Children should be seen but not heard. D. None but the brave shall enter in.
*March 21, 2014*

**probability**

a multiple choice test consists of 8 questions, each with 4 possible answers but only one of which is correct.what is the probability that an unprepared student will, by chance, get, a. all correct answers, b. exactly 5 correct answers, c. at most 4 correct answers, d. at most...
*March 12, 2014*

**probability and statistics**

a multiple choice test onsists of 8 questions, each with 4 possible answers but only one of which is correct.what is the probability that an unprepared student will, by chance, get, a. all correct answers, b. exactly 5 correct answers, c. at most 4 correct answers, d. at most ...
*March 12, 2014*

**URGENT physics**

The escape velocity of a bullet from the surface of planet Y is 1695 m/s. Calculate the escape velocity from the surface of the planet X if the mass of planet X is 1.37 times that of Y, and its radius is 0.887 times the radius of Y (in m/s).
*March 11, 2014*

**URGENT physics**

M1 is a spherical mass (38.6 kg) at the origin. M2 is also a spherical mass (10.3 kg) and is located on the x-axis at x = 59.8 m. At what value of x would a third mass with a 20.0 kg mass experience no net gravitational force due to M1 and M2?
*March 11, 2014*

**physics**

The escape velocity of a bullet from the surface of planet Y is 1695 m/s. Calculate the escape velocity from the surface of the planet X if the mass of planet X is 1.37 times that of Y, and its radius is 0.887 times the radius of Y (in m/s).
*March 11, 2014*

**physics**

Find the speed of a satellite in a circular orbit around the earth with a radius 2.69 times the mean radius of the earth; Radius Earth= 6.37E+3km; Mass Earth= 5.98E+24kg.
*March 11, 2014*

**physics**

M1 is a spherical mass (38.6 kg) at the origin. M2 is also a spherical mass (10.3 kg) and is located on the x-axis at x = 59.8 m. At what value of x would a third mass with a 20.0 kg mass experience no net gravitational force due to M1 and M2?
*March 11, 2014*

**physics**

The builders of the pyramids used a long ramp to lift 21000-kg (21-ton) blocks. If a block rose 1.0 m in height while traveling 21 m along the ramp’s surface, how much uphill force was needed to push it up the ramp at constant velocity?
*February 26, 2014*

**Physic**

a bullet is fired from at a shooting range. The bullet hits the ground after .32 seconds. How far did it travel horizontally and vertically in this time if it was fired at a velocity of 1100 m/s?
*February 11, 2014*

**English**

You're suppose to have answers there and then let Ms. Sue check it.
*January 30, 2014*

**Science**

Oh ok good. Thanx again!
*January 30, 2014*

**Science**

Does anybody know?
*January 30, 2014*