Tuesday

July 22, 2014

July 22, 2014

Total # Posts: 1,042

**chemistry**

so would the answer be M/L= 3.22 or .0322 ?

**chemistry**

what is the molarity of a solution made by mixing 178.5 of 1.5 M NaCl with 283.4m of 4.3M NaCl Mnacl*L nacle =(1.5)(.001718)=.0026775 moles nacl=(4.3)*(.002834)=.0121862 total moles = .0026775+.0121862=.0148moles final volume = .001785+.002834=.004819 L m/l= 3.21779 I dont thi...

**chemistry**

137.33/233.43*.438=.258 .258/567*100= 44.8 got it now thanks

**chemistry**

To analyze for barium in an unknown white powder, an excess of sodium sulfate solution was added to a 0.576 g sample of the powder dissolved in water. A white precipitate of BaSO4 was isolated, dried, and found to weigh 0.438 g. What is the mass percent of Ba in the white powd...

**chemistry**

whats arrgg mean?

**chemistry**

a 340.4 ml sample of solution contains 27.4 g of cacl2. calcuate the molar concentration of calcium ion in this solution. this is what i did 27.4(110.98) =.247mol .247mol/34.4L=.726Mcacl2 is this correct?

**chemistry**

Oxalic acid (H2C2O4) can be used to remove rust according to the following balanced equation: Fe2O3 + 6H2C2O4 --> 2Fe(C2O4)33- +3H2O + 6H+ Calculate the number of grams of rust that can be removed by 5.00 x 102 ml of a 0.122M solution of oxalic acid.

**chemistry**

How many grams of water are formed when 43.4 g of hydrogen are consumed in an excess of oxygen? I got 390.6 is this correct?

**Calculus 2**

find the area of the region f(y)=y/(16-y^2)^1/2, g(y)=0, y=3

**general chem**

identify the 2 substances whose aqueous solutions have common properties to a marked degree and explain your answer. a) CuS, CuCI2, Na2 S, KCI b) HCI, HC2H3O2, NH4C2H3O2

**Economics**

Why is price stability and full employment important to our economy?

**science**

A bat flying in a cave emits a sound and receives its echo 0.4 s later. How far away is the cave wall? Assume the speed of sound to be 340 m/s. Answer in units of m.

**college physics**

A CD has to rotate under the readout-laser with a constant linear velocity of 1.25 m/s. If the laser is at a position 3.2 cm from the center of the disk, what are the revolutions per minute (rpms) of the disk? Can someone please help me solve this problem step by step. The ans...

**college physics **

A point (labelled P in the figure) is attached to the rim of a disk of radius 0.2 m, which can turn around an axis through its center. It is rotating counterclockwise with a speed of 2.5 m/s. Can someone please help me solve this equation step by step?

**Elements of Psychology**

i know for sure these are correct 1)d 2)a 3)d 4)b 5)c 6)a 7)b 8)c 9)c 10)a 11)a 12)d 13)a 14)b 15)a 16)d 17)b 18)c 19)a 20)a

**government**

Without the _____ to implement them, the decisions of Congress would have no meaning

**macro**

Suppose that the position of a nation's long-run aggregate supply curve has not changed, but its long-run equilibrium price level has increased. Which of the following factors might account for this event? a. A rise in the value of the domestic currency relative to other w...

**Chemistry**

Thank youuu!

**Chemistry**

How many joules (J) are needed to increase the temperature of15.0g of lead from 20 degrees celsius to 40 degrees celsius? (Specific heat of Pb is 0.128J/g degree celsius)

**algerbra**

Your mom is correct. You distribute the negative sign to the rest of the equation but there are no common factors to be put together so, yes it would be -a+3b-27

**math**

An experiment consists of flipping a coin 3 times and noting the number of times that a heads is flipped. Find the sample space S of this experiment. S=?

**domains of development**

describe why it is important to consider each domain in the study of adult development

**Math**

Add: 5 squared(4 squared 2 - 6 squared 25)= thanks

**Algebra**

I think I have the correct answer.. just want to make sure.. the answer is y+2/y-2 right?

**Algebra**

Please help: (y^2+4y/y^2+2y-8)/(y/y+2)

**Math**

t/6 - t/14= 1/6 Is there a solution for this problem?

**Creative writing**

what are some drafting strategies when writing

**Critical thinking**

Break the problems into workable parts. (In this step, explain how you broke the assignment into smaller more easily tackled parts and provide a reason for each part.)

**Pharmacy**

Where would you find information on drug interactions in an older-style drug monograph?

**Busine**

Can u give me sites where to research. I have tumor so Ive been really sick

**Busine**

Briefly explain what is meant by objective and judgmental performance evaluation. Discuss two methods of judgmental evaluation. 5. (TCO 8) Briefly describe the purposes of job analysis and the two documents that often result from it. 6. (TCO 9) List the advantages and disadvan...

**EXP105**

SUMMARIZE BLOOM'S THEORY IN YOUR OWN WORDS AND HIGHLIGHT THE MAIN COMPONENTS

**ecology**

In what ways can nature restore a damaged ecosystem?

**algebra**

You are hosting a party at a restaurant. The restaurant charges $150 to reserve the room plus $25 per person for food and drink. 1. Write a linear equation representing your total bill based on the number of people at your party. 2. If you graph this line, what is its slope? 3...

**college**

define social change

**Physics**

If a tuning fork puts out a tone at 440 Hz, what is its wavelength in air at 25 degrees?

**Physics**

If a tuning fork puts out a tone at 440 Hz, what is its wavelength in air at 25 degrees?

**Physics**

Light of wavelength 550 nm in air is found to travel at 1.96 x 10^8 m/s in a certain liquid. Determine the index of refraction of the liquid.

**College Algebra**

Can anyone please show me how to solve (5¡Ì7 ¨C 10¡Ì2)(4¡Ì7 + 8¡Ì2)

**Physics**

1. What is the intensity of a sound at the pain level of 120 dB? 2. What is the intensity level of a sound whose intensity is 2.0 x 10^-6 W/m^2?

**spanish**

the correct answer is A because sueter is masculine and singular; esta is used for feminine singular

**Physics**

A 0.50-kg mass at the end of a spring vibrates 3.0 times per second with an amplitude of 0.15 m. Determine (a) the velocity when it passes the equilibrium point, (b) the velocity when it is 0.10 m from equilibrium, (c) the total energy of the system, and (d) the equation descr...

**Physics**

Light in air is incident upon a piece of crown glass at an angle of 45.0 degrees. What is the angle of refraction?

**computer**

what type of business is hot topic? franchise, soleproprietor,corporation or partnership

**10th grade**

-6x-x^2z^2-4yz

**soc**

what would be a intro that i could use about does punishment deter crime

**soc **

does punishment deter crime and why

**soc**

which type of punishment deters crime most effectively. and why. retribution, deterrence, rehabilitation and societal protection.

**soc**

which type of punishment deter crime most effectively

**soc**

do the consequences of punishment provide any beifits for criminals and society

**Kaplan university**

Could you please help me by rephrasing what it is asking me to do? Thank you.

**Kaplan university**

describe how something is learned using classical conditioning. Be sure to identify the unconditioned stimulus, the conditioned stimulus, the unconditioned response, and the conditioned response. For the second example you will use the theory of operant conditioning. For your ...

**ENGLISH**

The topic is: Why is it important to say what you think?

**ENGLISH**

I am having a hard time understanding key points to write my essay on. Can I get some opinions on why it is important to speak your mind?

**World History**

The military conquest of the assyrians were made possible by their A. powerful navy B. Efficient military organization and warlike spirit C. alliance with Egypt D. Country's natural barriers, which protected them from invasion by outsiders The famous orator who spoke out a...

**adult education**

Law means the rules or guidelines we must live by. To me justice is when someone has been punished for breaking the law or rules we live by. In the end the victim gets closure.

**Rephrasing a sentence**

during the years of our aquaintance, i have known guillermo to always be determined to long term goals and follow through with them; he truly is a man of his word .

**Math!!!**

Simplify the following including like terms 13rs(squared)-r+42s(squared)+6s(squared)-8rs(squared)-3r

**science**

make a phrase out of these letters; csmataquennteers

**10th grade Biology**

what adaptations are needed if an organism performs internal external fertilization?

**social studies**

my teacher said that there is religious conflict in egypt could you please in two or there sentences tell me about it i am curious

**analogies**

CHANGE

**math**

there are 30 students in class. 1/5 of the class are girls. how many boys are in the class

**HCA 230**

Do I need to do research online fot the paper on the soicallization of caregivers or if the information is in the reading?

**chem**

What volume of 0.200 M Fe(NO3)3 is needed to make 50ml of o.oo200M Fe(NO3)3?

**math**

what two steps do u follow to tell if a table is a direct variation/proportion?

**10th grade**

Read the following paragraphs and in the space provided below, identify each highlighted word as a direct object, an indirect object, a predicate nominative, or a predicate adjective. Example: I enjoy [1] cooking but it can be hard [2] work. 1. direct object 2. predicate nomin...

**3rd grade**

use a grid draw two different figures that each have a perimeter of 14.

**physics**

You want to swim straight across a river that is 76m wide. You find that you can do this if you swim 28 degrees upstream at a constant rate of 1.7m/s relative to water. At what rate does the river flow? The angle is measure from the river bank (directly upstream is 0 degrees w...

**Fondations of business**

Read the two case studies on pages 233-236 of the text. Answer the following in a 200- to 300-word response: What motivation theories may be found in each case study? Describe the theories found in each case study and cite specific examples. What was each business owner's ...

**9th grade**

True or False. To find a sales tax of 6% on a purchase of $90.00 using the proportion method you would write the following: 6/100 = ST/$90?

**science**

either environmental science or something to do with food or something like that

**science**

i have a science fair coming up soon and i really want to win but i just cant seem to think of anything cool to do do you have any suggestions for me that would probably win?

**chemistry**

if you start with 5.5grams of magnesium chloride,how many grams of magnesium flouride will be produced?

**physics**

3) A 5.0 kg book is sitting on a table. Which describes the force acting on the book a. there are no forces acting on the book b. the force of the table upward is greater than the force of gravity downward c. the net force on the book is zero d. kinetic energy counteracts the ...

**Chemistry**

Under an O2(g) pressure of 1.00 atm , 28.31mL of O2 (g) dissolves in 1.00L H2O at 298K. What will be the molarity of O2 in the saturated solution at 298K when the pressure is 3.86atm ? (Assume that the solution volume remains at 1.00L .) I used PV=nRT and found moles of solute...

**algebra 2**

What is the identity element for multiplication? What is the multiplicative inverse of 4? of 0.1? What is the familiar name for "multiplicative inverse"?

**human relations**

Studying how people get alone with one another? A. has little use outside the work place. B.can improve a persons personal life C.won't help a worker become more production D.for most people is a difficult thing to do

**spanish**

what does this say in English despues de haber encontrado todas las palabras escondidas, bosque el refran escondido, haciendo un circulo a las letras apropiadas, de izquierda a derecha.

**maths **

You're solving for x so get x by itself: 5x^2=245 x^2=245/5 x^2=49 x= SQRT(49) x=7.

**maths **

Well, I guess it doesn't really matter. Ok it helps if you draw your triangle, but you don't necessarlly have to. You know that A must be less than 90 and that its sin= 3/5. sin= opposite side of the angle/ the hypot. If you drew a triangle you'll notice that its a...

**maths **

did your teacher specify if you need an exact number or a fraction will do just fine??

**math**

plug 1 into g(x): -(1)2 = -2 then plug ur result into f(x) 3(-2) + 9 Solve it and bam shocka locka locka, your done. :)

**math**

combine like terms: 2x + 7x = 9x solve for x: 9x < -12 x < -12/9

**math**

all real numbers

**Chemistry**

find 15.0% of 153lb: .15 x 153

**Math**

To find a perpendicular line, you find the opposite reciprocal slope. The reciprocal of 5/3 is 3/5. The opposite of 3/5 is -3/5.

**APUSH**

How did Wilson get support for his progressive reforms? a.) he acted through a bipartisan coalation of progressives b.) relied on the party loyalty of Democrats c.) could not rely on most Democratic Congressmen to stick with him d.) none of the above

**math**

Anytime you have a variable in the denominator or a variable under a radical, the domain will not be all real number. Any other time it will. In your case, x-4 cannot = 0 and x + 3 cannot = 0. You solve those like normal equations and you should get x cannot = 4 and x cannot =...

**math**

write (f+g) as a huge equation: x + 5 + x + 7 combine like terms: 2x + 12 Plug in 1: 2(1) + 12 Solve.

**APUSH**

In the Spanish-American War... a.) America's victory could be attributed in large part to expert preparation b.) More American soldiers died from disease than battle c.) The American victory in the decisive battle at Santiago depended on assistance from German forces d.) A...

**accounting 220**

Final Project: Final Project • Resources: Appendix A • Due Date: Day 7 [post in the Individual forum] • Write a 700-1,050 word paper, using APA guidelines, based on following scenario. You want to start your own business. You found an investment group that is wi...

**math **

$125?

**math **

a local gas station uses the formula c= 0.635L+ 6.25 to charge customers who want to buy gasoline and a car wash what is the total cost if you buy 20L of gasoline? please help!

**math**

a local gas station uses the formula c= o.635L

**Rectangles**

The width of a rectangle is fixed at 18cm. What lengths will make the perimeter greater then 74cm?

**CP Algebra**

my teacher said that something has to cancel though

**CP Algebra**

15y^2-30y-45 ____________ 5y^2+10y-15 this is simplifying multiplying and dividing i got this far: 15(y^2-2y-3) 15(y+1)(y-3) ___________ = ___________ 5(y^2+2y-3) 5(y-1)(y+3) then i simplified the 15 to 3 and the 5 to 1

**CP Algebra**

3x^2-6x-24 __________ 3x^2+2x-8 this is just simplifying multiplying and dividing i got this far: (3x 2)(x 12) ___________ (3x-2)(x+4)

**Albegra**

The equation y=-1777x + 27,153 can be used to predict the number y of gun deaths in the United States x years after 2000, that is, x=0 corresponds to 2000, x=3 corresponds to 2003, x=4 corresponds to 2004, and so on. Predict the number of gun deaths in 2004 and 2007. In what y...

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