Wednesday

April 16, 2014

April 16, 2014

Total # Posts: 577

**Chemistry**

1) Prepare 100mL of 10%w/w HCl from 37%concentrated HCl(density of 37%HCl =1.19g/ml) 2) Prepare 100mL of 10%w/v HCl from 37% concentrated HCl(density of 37%HCl=1.19g/ml) Can you please show the calculation steps for 1) & 2)? Is 10%w/v HCl the same as 10%w/w HCl? Thanks.

**English - thank you ms sue i will wait **

i will wait and thanks a lot

**English - please help i had posted 3 times and no **

please can you make correction in my short story. i am very bad at grammar and even my parents does not khnow english well. can you proof reed my short story. Love-Hate story “Happy birthday Khushi”, her family said as they came to her room at midnight. “Thank y...

**eng lit**

please proof read my short story please and make some correction Love-Hate story “Happy birthday Khushi”, her family said as they came to her room at midnight. “Thank you, Mom, Dad and my lovely sister”, Khushi said with a huge smile. Khushi laid down on he...

**Chemistry**

Oh, sorry. 25 g of Zinc and 30 g of sulfur. I already found that Zinc is the limiting reagent, but I'm stuck on the rest.

**Chemistry**

Zinc and sulfur react to form zinc sulfide according to the equation Zn+S=>ZnS a) How many grams of ZnS will be formed? b) How many grams of the excess reactant will remain after the reaction is over?

**Physics help.**

If a curve with a radius of 94.5 m is perfectly banked for a car traveling 72.4 km/h, what must be the coefficient of static friction for a car not to skid when traveling at 96.4 km/h?

**Biology**

The genes for hair color and eye color are linked

**Math **

r=40-2t shows the relationship between the average rate of speed, r, of a car in meters per second, and the time, t,in seconds, as the car slows down.

**College Physics**

A Fraunhofer diffration pattern is produced on a screen 210cm from a single slit. The distance from the center of the central maximum to the first-order maximum is 7560 times the wavelength (lambda). Calculate slit width. Answer in __m

**College Physics**

The lines in a grating are uniformly spaced at 1530 nm. Calculate the angular separation of the second order bright fringes between light of wavelength 600nm and 603.11nm. Answer in __mrad

**statistics**

f someone scored two Standard Deviations above the Mean on a standardized test where the Mean = 100 and the Standard Deviation = 15, then that person’s numerical score would be…? A. 125 B. 130 C. 160 D. 90th Percentile

**Chidren,Families,and Society**

Larry is a very aggressive four-year-old child.he watches many television programs that contain violence.it's most likely that

**history**

Help needed! I'm comparing France and the USA. If France had the Paris vs. Versaille conflict with regards to the city capital. As much as capitals showed the unity amongst the people, it also produced conflicts between different sectors of society. What did the United Sta...

**Chemistry**

How to prepare 100mL of 3% w/w Hydrogen Peroxide from 30% w/w Hydrogen Peroxide?Specific Gravity of 30%w/w Hydrogen Peroxide is 1.11g/mL. Can you please show the calculation steps? Thanks.

**history**

okay. thank you :)

**history**

Thank you. :) Though I was thinking, should it be "full potential"? or just the potential.. I mean, urban life is still moving forward so there's no way of telling that it has reached its full potential, right? :) Or maybe I'm just overthinking.

**history**

Well, basically, here is what I've got so far.. I believe that the industrial revolution promoted urban life. To a certain point, people would a associate urban living to better living. Migration from rural areas to urban areas was popular back then. During the industrial ...

**history**

Cities and urban areas were a source of economic opportunities in the post-Medieval Western world. How was the full potential of Western cities and urban areas in this regard was realized during the Industrial Revolution?

**Chilsren,Families,and Society**

18.Which of the following statements implies rules of confidentality?A.You can tell the librarian that you heard that Joey's father was arrested for drug use.B.Parents must give permission to release school records to the child's therapist at the community clinic. C. y...

**Chemistry**

How do I prepare 100mL of 10g/L HCl from concentrated HCl(37%HCl, density 1.19g/mL) Is it 2.28mL of conc HCl dilute to 100mL with water? Please show the calculation steps.

**physics**

t(s)=0.0,1.0,2.0,3.0,4.0,5.0,6.0,7.0 v(m/s)=0.0,4.6,8.9,13.4,18.0,22.9,27.6,32.0 find the area underneath the graph between t=2.0s and t=6.0s, i know i will have to break this down into two separate shapes, a rectangle and a triangle then add them together, i just don't kn...

**math**

The product of two consecutive intergers is 56. Find the intergers.

**Engineering/Chemistry**

m_dot = 2000 kg/h q = 111600 kJ/h T_final = 95C C_p = 3.9 kJ/(kgC) equation: q = m_dot*c_p*(T_initial-T_final) plug in all the value and solve for T_initial *NOTE* remeber deta_T both in C and K is the same. So don't worry

**Science**

Can u help me find a picture of a sea sponge budding ?

**chemistry**

Aluminum metal generates H2 gas when dropped into 6.00 M HCl. Calculate the mass of H2 that will form from the complete reaction of 0.365 g Al with 8.40 mL of 6.00 M HCl.

**math**

Determine the values of k for which the function f(x)= 4x^2-3x+2kx+1 has two zeros , check these values in the original equation

**math**

Determine the values of k for which the function f(x)= 4x^2-3x+2kx+1 has two zeros , check these values in the original equation

**math**

Factor completely x(x+1)^2-4(x+1) (2x+3)^2-9

**math**

solve the equation (1/4)^x = (1/8)^2x-1 solve the equation 3^-x+2=27^x-4

**science**

Why is a pizza cutter handle a lever?

**bio**

sorry i meant arteries

**bio**

name three major blood vessels that branch off the aortic arch and the body part the blood is carried to name two major artries that branch off the dorsal aorta and the organ they carry blood to

**bio**

for a fetal pig why is it difficult to find the urinary bladder by describing the specific location ? what structures in the umbilical cord remove waste materials from a fetal mammal?

**bio**

The fetal pig does not have functional lungs, since the lungs are not being used is there any need to transport blood tot he lungs before the fetus is born

**bio**

I did a pig dissection , but i am not to sure about these questions, any help would be great ! 1. The lungs of a fetal pig serve as a protection for what important body organ 2. The respiratory system is located on the ventral side of the pigs body, what 3 ways is the tract ph...

**math**

in 2nd year Adam owed $ 977.53, in the 3rd year he owed $ 1036.18 and in the 4th year he owed $1098.35 how much was the loan originally, and determine the future value of the loan after 10 years

**math**

Loan #1 Year Amount owed 1 $3796 2 $3942 3 $4088 Loan # 2 Year Amount owed 1 $977.53 2 $1036.18 3 1098.35 For loan #1 is simple interest. Loan #2 is compound interest How much was each loan originally Determine the future value of each loan after 10 years No one has answered t...

**math**

Vlad purchased some furniture for his apartment. The total cost was $ 2943.37. He paid $ 850 down and financed the rest for 18 months. At the end of the finance period .Vlad owed 4 2147.28 . What annual interest rate, compounded monthly , was he being charged ? Round your answ...

**math**

oh sorry 6%/a

**math**

Sally invests some money at 65/a compounded annually. After 5 years . she takes the principal and interest and reinvests it all at 7.2%/a compounded quarterly for 6 more years. At the end of this time, her investment is worth $ 14 784.56 . How much did Sally originally invest?

**Math**

on the day Rachel was born, her grandparents deposited $ 500 into a savings account that earns 4.8%/a compounded monthly . They deposited the same amount on her 5th, 15th, and 10th birthdays. determine the balance in the account on Rachel's 18th birthday

**Math**

oh sorry 45%/a

**Math**

Bermie deposited $ 4000 into an account that pays 45/a compounded quarterly during the first year. The interest rate on this account is then increased by o.2% each year. Calculate the balance in Bernie's account after three years.

**Math**

Sara buys a washer and a dryer for $2112.She pays $500 and borrows the remaining amount. A year and a half later she pays off the loan, which compounded semi-annually, was Sara being charged.

**physics**

Thank you very much! I appreciate your help! :)

**physics**

A student rides on a train traveling at Vt = 36ikm/hr (with the respect to the ground). What are the speed and the velocity of the student with respect to the ground if he runs at 5.0im/s? -5.0 m/s? 5.0j m/s perpendicular to the direction of motion of the train?

**Math**

Tia is investing $ 2500 that she would like to grow to $ 6000 in 10 years, at what annual interest rate compounded quaterly must Tia invest her money

**math**

Nazir saved $900 to buy a plasma tv, he borrowed the rest at an interest rate of 18%/a compounded monthy, 2 years later he paid $ 1420.50 for the principal and the interest, how much did the tv originally cost

**Math**

Dieter deposists $ 9000 inoan account that pays 10%/a compunded quarterly, after 3 threes the inerest rate changes to 9%/a compounded semi-annually, calculate the value of his investments 2 years after this change

**Math**

Sima invests $ 4240.00 in the first year, $ 4494.40 in the second year , and $ 4764.06 in the third year , how much did sima invest

**math**

A simple fractal tree Grows in stages. A each new stage, two new line segments branch out from each segment at the top of the tree. The first five stages are shown. How many line segments need to be drawn to create stage 20? Stage 1- 1 Stage 2 - 3 Stage 3 - 7 Stage 4 -15 Stage...

**Math**

George invests $ 15 000 at 7.2%/a compounded monthly . How long will it take for his investment to grow to $ 34 000

**Math**

Serena wanst to borrow $15 000 an pay it back in 10 years. Interest rates are so high, so the bank makes her 2 offers option 1 - borrow the money at 12%/a compounded quarterly for the full term option 2 -Borrow the money at 12%/a compunded quarterly for 5 years and then renego...

**math**

How long would you have to invest $5300 at 7.2%/a simple interest to earn $1200 interest

**math**

How much money must be invested at 6.3%/a simple interest to earn $250 in interest each month

**world religions**

I really need help with thses questions ! Any help would be great true or false- Moses was a wealthy egyptian what is Yavneh and why was it so important?

**calculus**

find the area of the region enclosed by y=squareroot of x, the line tangent to y= squareroot of x at x=4 and the x-axis

**math**

the 65th term in a geometric sequence is 8000, and the 69th term is 500. find the 64th term

**math**

the 10th term of an arithmetic series is 34, and the sum of the first 20 terms is 710, determine the 25th term.

**math**

in the video game gemetric constructors a number of the shapes have to be arranged into a predefined form , in level 1, you are given 3 min 20s to complete the task, at each level afterward, a fixed number of seconds are removed from the time until, at level 20 , 1 min 45s are...

**math**

Jamal got a job working on a assembly line in a toy factory, on the 20th day of work, he assembled 137 toys, he noticed that since he started , every day he assembed 3 more toys then the day before , how many toys did jamal assemble all together during his first 20 days

**To Annie: Re: Penn Foster**

I"ve been asking for help to see if my anaswers were correct, the work was my own .I'm not the only student asking for alittle help. This isn't cheating!!!!

**Penn Foster, Language and Other Barries**

6. to say that all African American males are fast runners is an example of A.prejudice B.sexism C.sterotype D.bias

**Penn Foster, Language and Other Barries**

D.keep the lines of communication open between teachers, students, and parents.

**Penn Foster, Language and Other Barries**

Would the answer to question 11.,be D ?

**Penn Foster, Language and Other Barries**

I think the answer is C

**Penn Foster, Language and Other Barries**

11.As a teacher in an ESL classroom,it's within your responsibilities to A.meet parents one-on-one to discuss their child's progress B.provide language translation for the teacher when reequested C.determine when an ESL, student is ready to be mainstreamed into a "...

**Penn Foster, Language and Other Barries**

11.As a teacher aide in an ESL classroom,it's within your responsibility to

**physical science**

pour a liter of water at 40 c into a liter of water at 20 and the final temperature of the two becomes about____________________c

**Language and Other Barries**

8.In general,the best type of multicultural classroom materials are those that

**Early Child Educationand After-School Day Care**

Whi are pre-primer programs desinged for?

**physics**

calculate the distance it traveled before it is brought to rest from 44 km/h if the speed of a truck going south is reduced from 80 km/h to 44 km/h in a distance of 250 m.

**spanish**

can anyone answer these questions i have to say all of them tomorrow in spanish. 1. ¿Cuántos estudiantes hay en la clase de español? 2. ¿Hay cuadernos en tu mochila? 3. ¿Qué es? 4. ¿Quién es? 5. ¿De quién es...

**can you please look over my answers? clauses**

do

**Math**

Sarah throws rocks into a quarry lake from the top of a 67 foot high wall. The chart gives the horizontal distance, x (in feet), the rock has travled from Sarah and the height, y (in feet), of the rock above the lake. The chart is: |distance, x:|9| 19| 36|50| |height, y: |75.3...

**English III**

are you doing odyssey ware to?? i just had this same question pop up

**Teacher Aide in the Special Education Setting**

When tutoring learning challenged settings,learning challenged students are most often placed in A.resource rooms B.the nurse's office C.self-contained classrooms D.phychiatric clinics

**social studies, Anthro psych , and soc**

In the movie Shawshank redemption, how did the prison in the film try to rehabilitate its inmates, was it successful? Provide 3 examples of ways in which the prison guards enforced compliance to prison rules, were the enforcements necessary or effective? Why was Red continuall...

**Dymanics**

10tan theta= .5+1/2costheta + 2sintheta How do I simplify the right side of the equation.

**Technology in the Classroom**

A software package that you would like to run on your classroom computer lists a 486 computer as a minimum requirement. On which of the following computers would you expect the software to be able to run?

**Instructional Materials :Their preparation and use**

which machine would you use to project a color picture from a book? A.Bioscope B.Slide projector C.overhead projector D.Opaque projector

**Instructional Maferials: Their Preperation and Use**

Why would you mount an overhead transparency in a cardboard frame? A. to make copies of it B. To color it C. To add overlays D. To project it onto a screen

**Technology in the Classroom**

Which of the following scenarios most likely describes the future of technology in education?

**Technology in the Classroom**

What is the ideal computer arrangement to use when you want to integrate computers directly into the classroom curriculum?

**Technology in the Classroom**

A,1.2GB

**Technology in the Classroom**

There are several different hard drives available for a computer.Which of the following size hard drives is the largest?

**Math**

yay! thanks!

**Math**

What is the volume of a cone that has a radius of 3 cm and a height of 7 cm? (use 22/7 for pi) I got 594 cubic cm, but I have a feeling I'm terribly off.

**science**

you could collect differrent types of skin moisturizers, and cover them. Then, ask test subjects to use them, each person not knowing which mouisterizer is which, and ask them to write down how they feel after using the mouisterizers. Or, you could test them on yourself.

**algebra**

wait. are the brackets around the numbers saying to find their absolute value, or is that just ot seperate them?

**Physics**

Suppose you were to swim into an underwater cave while keeping the same depth below the surface of the water. Would the water pressure around you increase, decrease, or remain the same? a. The pressure would increase. b. The pressure would decrease. c. The pressure would remai...

**Math-Thanks**

That's what I thought at firts,but then I kept thinking I ;eft something out.... Thanks!

**Math**

Can you simplify the fraction 63/323? I've tried....

**Calculus**

That is the wrong answer.

**physics**

a 160 g hockey puck slides horizontally along the ice, and the coefficient of kinetic friction between puck and ice is 0.15. if the puck a tarts sliding at 3 m/s, how far will it travel before it comes to a stop?

**physics**

a 160g hockey puck slides horizontally along the ice, and the coefficient of kinetic friction between puck and ice is 0.15. if the puck starts sliding at 3 m/s before it comes to a stop it travels 3.6m how do you get to this answer?

**physics**

1. A boy drags a wooden crate with a mass of 20 kg, a distance of 12 m, across a rough level floor at a constant speed of 1.50 m/s by pulling on the rope tied to the crate with a force of 50 N. The rope makes an angle of 25¡ã with the horizontal. a.What is the mag...

**chemistry**

8 mL of 0.0100 M HCl are added to 22 mL of 0.0100 M acetic acid. What is the pH of the resulting solution?

**algebra**

6d-3d+2d=35

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