Thursday

April 17, 2014

April 17, 2014

Total # Posts: 251

**Chemistry**

If 0.08 mol of LiCl is added to a one liter solution that has dissolved 0.01 mol of PbCl2, will a precipitate occur?

**algebra**

The rack of weight plated at the fitness center has a total of 148 plates weighing 2.5,5,and 10 pounds each. The total weight is 500 pounds. There are ten times as many 5 pound plates as 10 pound plates. Set up a matrix equations and then solve it to determine the number of ea...

**physics**

in other terms of units, what is a joule equal to? a)N*m b)N/m c)W/s d)s/W e)N*s

**science**

I need an acrostic poem for the element Sodium?? puhleez?! THANX!!!

**Lit**

how does mark twain show racism and slavery in huckleberry fin? thanks!

**World History **

For my research project, I need to choose an absolute monarch. I want to do one on a monarch/emperor/king from Vietnam because I have Vietnamese origins and am interested in learning more about its history. Is there any well known Vietnamese absolute monarchs? Thank you

**Finance**

D

**Science**

Explain what acids and bases are in terms of hydrogen ions. Which has more hydrogen ions and which has less?

**physics**

the moon has a period of 27.3 days and a mean distance of 3.90x10^8 m from the center of the earth. find the period of a satellite in orbit 6.7x10^6 m from the center of earth. thank you!

**religion/theology**

i have to make a prayer video and i dont know what to make it about, please help! thank you

**CHEMISTRY**

Given that Mg(ClO3)2 decomposes into magnesium chloride and oxygen: A) Write a balanced equation for this reaction. I got Mg(ClO3)2 yields MgCl2 + 3 O2 Is that right? B) If 0.302 grams of O2 is lost from 1.890 grams of a mixture of Mg(ClO3)2 and an inert material, what is the ...

**CHEMISTRY**

Given that Mg(ClO3)2 decomposes into magnesium chloride and oxygen: A) Write a balanced equation for this reaction. I got Mg(ClO3)2 yields MgCl2 + 3 O2 Is that right? B) If 0.302 grams of O2 is lost from 1.890 grams of a mixture of Mg(ClO3)2 and an inert material, what is the ...

**Lit**

in the scarlet letter what influence did the witches have on pearl thanks!

**lit**

yea i had to read the book over the summer but my teacher wants us to find a celebrity that kinda represents them. like how lindsey lohan is like a pearl

**lit**

im doing a character analysis and i need help on what celebrity is like hester and one like pearl

**Writing**

Can you proofread my essay? Life in the Fast Lane Have you ever changed so much in life that you couldn’t possibly bare it? Well, that person is called a dynamic character, someone who changes throughout a drama. In the drama, “The Crucible,” by Arthur Miller th...

**history**

why is the columbian exchange and pilgrims important to the U.S history? thank you!

**theology**

WHO IS saint. cecilia?

**Lit**

thank you so much!!

**algebra**

It's a difference of two squares. It'll be (x+sqrt(4)) and (x-(sqrt(4)), for example---replacing 4 with whatever number is being subtracted from x squared. That one is (x-2)(x+2). Another example: x^2-16 = (x-4)(x+4) You can even do this: x^4-16 = (x^2-4)(x^2+4)

**Writing**

Can you proofread my essay and I also need a good title? Christopher Columbus was a brave, strong, hard-worker who took sea to America in 1470. What is biased? Biased is your opinion or idea on someone. In Christopher Columbus journal excerpt, there were many examples of how h...

**math**

In a class of 80 seniors, there are 3 boys for every 5 girls. In the junior class, there are 3 boys for every 2 girls. If the two classes combined have an equal number of boys and girls, how many students are in the junior class?

**theology**

there are no variations within the catholic liturgy. all liturgy is identical worldwide. true or false?

**math**

Part 1: Write two conditional statements for which the converse is true. 1. Statement: 2. Converse: 3. Statement: 4. Converse: Part 2: Write two conditional statements for which the converse is false. 5. Statement: 6. Converse: 7. Statement: 8. Converse:

**math**

simplify sin(540-2x) this is to do with trig

**Trig**

Verify the identity. (secx + tanx)/(secx - tanx) = (1 + 2sinx + sin(^2)x)/cos(^2)x

**maths**

find the general solution for the equation: sin2x+ square root 3cosx =0

**english**

a dolls house questions: what religious themes do you see in the play? What is the significance of Nora’s words, “to hell and be damned” in Act I? Was Nora wrong to have acquired the money for the trip to save Torvald’s health? What elements of Nora and Tor...

**Algebra**

The stem-and-leaf plot represents the average monthly high temperatures in Tampa, Florida. What is the first quartile (Q1) of the temperatures? Round to the nearest tenth. Stem leaf 6 9 7 1267 8 14799 9 00

**Math**

Does this set of data have any outliers? Data: 1, 2, 2, 4, 6, 6, 7, 8, 9, 10, 12, 13, 16, 16, 18. no or yes

**Algebra**

The data below represents the average score per game of the top 40 NBA players, rounded to the nearest whole number. Find the minimum, Q1, median, Q3, maximum for the data. Stem l leaf 1 l 55667777888888899 2 l 00000011123445566679 3 l 135

**AP Chemistry**

yea you're right!

**College Statistics**

A random variable X has a Gamma distribution with (alpha = a, beta = b). Show that P(X > 2ab) < (2/e)^a. hint: X > c is equivalent to e^Xt > e^ct

**English**

A

**Chemistry**

How many liters of hydrogen gas can be produced at 300.0K and 1.55atm if 20.0g of sodium metal is reacted with water?

**Chemistry**

How many liters of hydrogen gas can be produced at 300.0K and 1.55atm if 20.0g of sodium metal is reacted with water?

**science**

I just wish that people could post a helpful answer, Translational motion is movement of an object without a change in its orientation relative to a fixed point, as opposed to rotational motion, in which the object is turning about an axis. With that in mind a leaf blowing acr...

**math**

Is a package of 8 hot dog buns proportional to a package of 10 hot dog franks?

**Physics**

A ball of moist clay falls 10.4 m to the ground. It is in contact with the ground for 20.5 ms before stopping. (a) What is the average acceleration of the clay during the time it is in contact with the ground? (Treat the ball as a particle.) m/s2 (b) Is the average acceleratio...

**math 7th grade**

hint: use pemdas

**math 7th grade**

what is 234(2-1+1092-924+18) ?

**physics**

A 16000 kg sailboat experiences an eastward force of 12400 N due to tide pushing its hull while the wind pushes the sails with a force of 51900 N directed toward the northwest (45 westward of North or 45 northward ofWest). What is the magnitude of the resultant ac- c...

**3rd grade**

the answer is precisley 9 hands:)

**Math**

An invoice of $12,000 is dated April 5. The terms 5/10,n/30 are offered. Find the amount due if the discount is earned. Show your work.

**chemistry**

If i have .0030M BaSO4 how do I calculate the moles of sulfate?

**physics**

a plane needs to fly at 40 degrees n of e when flying through a wind that blows 80 mph @ 70 degrees S of E. If the plane goes 320 mph in still air in what direction should the plane aim?

**Physics**

A stone is dropped from the top of a well. If the well is 23.1 meters deep, how long with the stone take to reach the bottom?

**Physics**

An object with a mass of 3kg is dropped from 56.3 meters. How far above the ground is it's kinetic energy 1073J?

**physics**

A metal sphere of radius 5.00 cm is initially uncharged. How many electrons would have to be placed on the sphere to produce an electric field of magnitude 1.59 105 N/C at a point 7.98 cm from the center of the sphere?

**AP Chem**

how many milliliters of 0.10 M HCl must be added to 50.0 mL of 0.40 HCl to give a final solution that has a molarity of 0.25 M?

**Math**

4% x 60month x 2000= 4800 I am really struggling with this problem.

**Math**

What would the rate of return be on an Individual Retirement Account with a contribution of $2000.00, at 4% Interest rate, for 5 years?

**math algebra **

what are 4 consecutive integers whos sum is -2

**English (Mrs,Sue!!)**

Mrs.Sue, I wrote a paper on research proposal. Now, my teacher is asking us to write the steps on how we wrtoe the paper. Can you reword these questions for me? thank you so much!! "What techniques did you use as you thought through the issue? " "What prewriting...

**Ms.Susy Please Help With Time!!!!!!**

the answer is 5:30 hours

**physics**

+y| / F | / | / | / /a_ _ _ _ _ +x 40N This is pretty much what the picture looks like. Your answer was incorrect!

**physics**

"Only two forces act on an object (mass = 3.90 kg), as in the drawing. (F = 76.0 N.) Find the magnitude and direction (relative to the x axis) of the acceleration of the object. " (The angle is 45 degrees and the horizontal force is 40N)

**physics**

"Only two forces act on an object (mass = 3.90 kg), as in the drawing. (F = 76.0 N.) Find the magnitude and direction (relative to the x axis) of the acceleration of the object. " (The angle is 45 degrees and the horizontal force is 40N)

**Math**

Is my answer correct then??

**Math**

Thank you!!

**Math**

R varies jointly as S and the square of T. If R is 32.4 when S=0.2 and T=9, find R when S=0.5 and T=5. I believe the answer is R=25, could someone check this for me?

**Math**

for his new room Daren will need 154 feet sq of wall to wall to cover of his new square room. what is the length of each wall of his room?

**statistics**

How do you find standard deviation?

**Physics**

a 25 kg box is released from rest on a rough inclined plane tilted at an angle of 33.5 degrees to the horizontal. The coefficient of kinetic friction between the box and the inclined plane is 0.200. a. determine the force of kinetic friction acting on the box b. determine the ...

**Chemistry**

Yes it does. Thanks.

**Chemistry**

my work: 243.228= 18.0153 * 4.184* (Tfinal-Tinitial) 1825.228=75.376Tfinal Tfinal= 24.2149 I got this answer and it is incorrect. can u please help me? and confirm the right answer. thanks :)

**Chemistry**

I have this same question on my hw and it is marking me wrong. Can someone please say what the right answer is or confirm it?

**Chemistry**

I still don't get how to do it. I did what you said and it keeps marking me incorrect :(

**Chemistry**

No this is a different person. Thanks I got it.

**Chemistry**

At constant pressure, which of these systems do work on the surroundings? Check all that apply. 2A (g) + B(s) --> 3C(g) 2A (g) +2B (g) -->5C(g) A(g)+ B(g) --> C(g) A (s) +2B(g)--> C(g)

**Chemistry**

For a 5.0 g sample of CoCl3·9H2O, what weight of water (in grams) will be lost if the sample is heated to constant weight (all water driven off)?

**Film Literature**

What was the first comedy movie ever made?

**math**

at a local community college, it costs 150 to enroll in a morning section of an algebra course. Supopose that the varible n stands for the number of students who enroll. then 150n stands for the total amount of money collected for this course. how much is collected if 41 stude...

**9th gradae physical science**

teh density of copper is 8.92 g/cm3. If you plotted the mass of copper in grams versus the volume in cubic centimeters, what would the slope of the line be?

**Intro to Psychology 1**

A behaviorist is asked to evaluate five students in the second grade who exhibt impluse control problems.The behaviorist decides it is best initially to study them in the classroom without interferring with the behavior.This behaviorist is conducting _____ research. A.) survey...

**Biology**

ok thank you!

**Biology**

yes i had read this previously, i guess im just not sure how to apply this to the question. any suggestions?

**Biology**

can anyone tell me a little about MacArthur and Wilson's theory of island biogeography? I need to answer the question Describe a series of small habitats that exist within 10 to 20 kilometers of your house and which might be subject to MacArthur and Wilson's theory of ...

**biology**

If im thinking correctly Aristotle paired things with similar characteristics. I would do some quick research on him before answering but I would go with D.

**math**

number of people who hear a rumor after t hours is N(t) = 2000/ 1 + 499e^-0.3t How long will it take for 200 people to hear the rumor?

**Physics**

Suppose you spend 30.0 minutes on a stair-climbing machine, climbing at a rate of 75 steps per minute, with each step 8.00 inches high. If you weigh 150 lb and the machine reports that 690 kcal have been burned at the end of the workout, what efficiency is the machine using in...

**Physics**

Sweating is one of the main mechanisms with which the body dissipates heat. Sweat evaporates with a latent heat of 2430 kJ/kg at body temperature, and the body can produce as much as 1.3 kg of sweat per hour. If sweating were the only heat dissipation mechanism, what would be ...

**Physics**

An ideal monatomic gas expands isothermally from 0.590 m3 to 1.25 m3 at a constant temperature of 670 K. If the initial pressure is 8.00 104 Pa. (a) Find the work done on the gas. Answer is in J (b) Find the thermal energy transfer Q. Answer is in J

**Math**

The answer is no solution, unless ur teacher says it has one. I had ethe same problem and its no solution. Hope this helps

**Finance**

For the first time in a very long time (perhaps ever!), the concept of financial risk and risk management has become a topic of concern at Presidential press conferences. Such concern has centered on esoteric financial products such as derivatives that are used to manage risk....

**science**

what change of state happens when a gas loses energy?

**bio**

what is the cisternal maturation hypothesis for Golgi apparatus function?

**bio**

how does the explosive polymerization of G-actin propels L. monocytogenes through the cytoplasm?

**bio**

what is a mechanism for how EB1 can mediate the extension of ER cisternae along microtubules?

**Spanish- SraJMcGin please recheck**

Thank you

**Spanish- SraJMcGin please recheck**

I think it does-so I was okay when I used mejor que in my sentence? I wasn't suppose to change anything??

**Spanish- SraJMcGin please recheck**

I'm not sure what you meant by correcting this sentence--Thank you for any further explanation you can give-- 3. Tocar el piano es______tocar la guitarra. (+bueno) Tocar el piano es mejor que tocar la guitarra. You said in an earlier post: mejor que(irregular - or comparat...

**Spanish**

For number ten and eleven above I think I put the wrong answer. To place verb in present progressive it would be: 10.Yo escucho it would be Yo estoy escuchando, correct? 11. nosotros hablamos would be Nosotros estamos hablando, correct? Thank you

**Spanish**

Please check these- Fill in comarative form for the first three: 1.Surfear es ____ interesante (cazar.) Surfear es más divertido que cazar. 2.El fútbol es ____ el golf.(interesante) El fútbol es más interesante que el golf. 3. Tocar el piano es_____...

**Algebra-Please check**

For the ellipse (x-2)^2/49 + (y+1)^2/25=1 List center: (2,-1) the foci: -(sqrt 74) AND +(SQRT 74,0) Major axis: x=2 Minor axis: y= -1 Vertices: (7,0) (-7,0) (0,5) (0,-5) Is this correct?

**Physics**

A ball has a diameter of 3.70 cm and average density of 0.0841 g/cm3. What force is required to hold it completely submerged under water? I need to find the magnitude in N Thank you!

**Physics**

(a) Calculate the absolute pressure at the bottom of a fresh-water lake at a depth of 23.2 m. Assume the density of the water is 1.00 103 kg/m3 and the air above is at a pressure of 101.3 kPa. Pa (b) What force is exerted by the water on the window of an underwater vehicle at ...

**physics**

Four objects are held in position at the corners of a rectangle by light rods . m1 2.90(kg) m2 1.90(kg) m3 4.50(kg) m41.90 (kg) (a) Find the moment of inertia of the system about the x-axis. Answer in kg · m2 (b) Find the moment of inertia of the system about the y-axis...

**Economics**

can you help me brain storm? I want some points on why Per Capita GDP might be a bad way to compare wellbeing across countries.

**history**

I don't understand what is meant when a question asks you for the "term" Historical significance. for example:john maynard keynes. I know everything about him and his economic ideas but, if i was asked to write a short paragraph of his historical significance i w...