Wednesday

April 23, 2014

April 23, 2014

Total # Posts: 480

**Math**

How many centiliters of pure acid must be added to 6 centiliters of a 50% acid solution to obtain a 70% solution?

**ENGLISH**

ok. I think that maybe she could start practising at home how to be more open, like she should be open with her siblings first, only then will she be able to have faith on her friends. Any suggestions?

**ENGLISH**

Elisa is a teenage girl who has trust issues with others. She does not like to tell individuals every fact of her life. What could Elisa do to help her trust people more and just be open with them?

**ENGLISH**

Sally is a teenage girl. She is never seemed to be heard of. If she ever has something to state, she is always cut short. This happens to her all the time and she can't help but speculate if it's done deliberatly. This makes sally feel less essential. What should she do?

**Geometry**

A regular polygon has an exterior angel measure of (x+3) Degrees and an interior angle measure of (13x-33) degrees Find the measure of each angle How mant sides does this polygon have?

**math**

Slope the Intercept form of the Equation....y-y1=m(x-x1) (3,-2) m=-6/5 (8,-8)

**Statistics**

How do I do this? I am very lost. If you live in California, the decision to buy earthquake insurance is an important one. A survey revealed that only 133 of 337 randomly selected residences in one California county were protected by earthquake insurance. Calculate the appropr...

**English**

1) Friendship is also very important for me. 2) In the future, I'd like to become a chemist; I also would like to graduate and live abroad, maybe in Asia or America. ***3) This sentence is confusing as it sounds as if you are either discussing more than two brothers or you...

**Chemistry**

The U.S. Food and Drug Administration lists dichloromethane (CH2Cl2) and carbon tetrachloride (CCL4) among the many cancer-causing organic compounds. what are the partial pressures of these substances in the vapor above a mixture containing 1.75 mol of CH2Cl2 and 1.95 mol of C...

**chemistry**

what should i be aware of when heating NH4andCO3

**Math**

how would you factor this expresssion I'm so confused. Thank you x^3-4x^2+3x/x+2 times (x^2-3x)

**Math**

Factor each expression 1-9a^2/a+1 times 4x^2-y^2/x+y Here is what I got: (1-3a)(1+3a)/a+1 times (2x-y)(2x+y)/x+y what am i doing wrong? The final answer is suppose to be 1-3a

**English**

I'm in 7th grade and I'm doing a lesson plan for the book because of winn-dixie. For the final project I'm going to have students create a diorama that represents the primary or secondary themes in the book. From an adults perspective What do you think the students...

**Math**

Show that the angle between the vector joining (a, b, c) and (b, c, a) and the vector joining (a, b, c) to (c, a, b) is equal to π/3

**Chemistry**

How many g of sodium nitrate do I need to make one Liter of 15% m/v solution?

**3rd grade math**

It would be 1hr and 45 mins of playing on Weds because on Monday Mason starts playing for one hour and then add the 45 mins. Right?

**Physics**

Highway safety engineers build soft barriers so that cars hitting them will slow down at a safe rate. A person wearing a seat belt can withstand and acceleration of -3.0 102 m/s2. How thick should barriers be to safely stop a car that hits a barrier at 106 km/h?

**college health care quality mangement**

Please explain three things you have learned about quality and performance . What impact have these three things had on the evolution of health care quality programs? Please substantiate your answers with examples.

**physics**

Vector A has magnitude 3.87 units; vector B has magnitude 5.63 units. The angle between A and B is 60.0°. What is the magnitude of A and B?

**algebra**

WHAT IS THE ANSWER

**algebra**

$1.OOX=0.77+1.24+5X -0.77-0.77 $1.00X=0.47+5X -5 -5 $-4X/0.47=0.47 X=-8.51

**math**

What is the rule? 6---------4 8---------6 10--------8 50--------48 Rule:________________________________

**math**

There is a small circle on the left overlapped by a larger circle to the right. The problem reads:If all four sided shapes were here (meaning the smaller circle to the left, and all yellow shapes were here meaning the overlapping larger circle to the right. What would go in th...

**algebra 2**

I DK

**English**

What does this mean? One should not accept people at face value?

**health services**

A firm's owners' equity at the start of the year is $700,000. During the year, the firm earned $500,000 in revenue and incurred $400,000 in expenses, what would be the balance in equity at the end of the year.

**health**

Which of the following structures are regions of the lung? A. Frontal, maxillary, sphenoidal, ethmoidal B. Eustachian, pharynx, bronchi C. Cilia, adenoids, mucous, epiglottis D. Apex, base, hilum

**college**

does it not matter if they are in g or g/ml?

**college/ chemistry **

suppose you have samples of two metals,A and B. Use the data below to determine which sample occupies the largest volume

**college**

suppose you have samples of two metals,A and B. Use the data below to determine which sample occupies the largest volume.. A> mass 25g density 10 g/ml B> mass 65g density 4.0 g/ml

**Penn Foster**

They are all correct.

**economics**

If the elasticity of demand for cocaine is −.2 and the Drug Enforcement Administration succeeds in reducing supply substantially, causing the street price of the drug to rise by 50%, buyers will spend less on cocaine.

**Microeconomics**

A sporting goods store has estimated the demand curve for a popular brand of running shoes as a function of price. Use the diagram to answer the questions that follow. a. Calculate demand elasticity using the midpoint formula between points A and B, between points C and D, and...

**operation management**

A firm is planning to set up an assembly line to assemble 40 units per hour. Assume that 57 minutes per hour are productive. The time to perform each task and the tasks preceding each task are as follows: Task Preceding Task Time to Perform (Min) A - 0.69 B A 0.55 C B 0.92 D B...

**math/everything**

do you know any website that can help me with all this 1.Language Arts, Writing, in two parts. •Part 1: Organization, Sentence Structure, Usage, and Mechanics •Part 2: Essay 2.Language Arts, Reading •Poetry •Drama and •Fiction •Non-fiction •W...

**public health**

what does it means to have high levels of lead in your blood

**math**

-62.2 km/h

**math**

Calculate dy/dt using the given information. y = (Ãx+1) =12; dx/dt = 8, x = 15, y = 3

**math**

Use implicit differentiation to find dy/dx. x^5 = cot y

**math**

Find the derivative of the function. q = square root of 18r-r^5 q = all this under square root

**math**

Find the derivative of the function. y = (x^2+8x+3)/(square root of x)

**chemistry**

Nitrogen monoxide reacts with oxygen according to the equation below.. 2NO + O2 -----> 2NO2... How many moles of NO are required to produce 5.0 moles of NO2 in excess oxygen?

**CAPITALIZATION**

thanks guys you are of great help

**Chemistry**

A 25.00 mL sample of KNO3 solution was diluted to 1.00X103 mL. The concentration of the final solution is 0.00383 M. Calculate the concentration of the original solution?

**Chemistry**

A beaker contains 50.0 mL of 0.952 M solution of a diprotic acid. How many grams of Mg(OH)2 are required to neutralize this solution?

**chemistry**

A beaker contains 50.0 mL pf 0.953 M solution of a diprotic acid. How many grams of Mg(OH)2 are required to neutralize this solution?

**Math**

$491.00

**Grade 12 Eng.**

Try using a website like Bibme Or, a great reference is Purdue's Online Reference Lab

**Chemistry**

Find the approximate pH range suitable for the separation of Fe3+ and Zn2+ by precipitation of Fe(OH)3 from a solution that is initially 0.048 M in both Fe3+ and Zn2+.

**accounting**

Fixed Company produces a single product selling for $30 per unit. Variable costs are $12 per unit and total fixed costs are $4,000. What is the contribution margin ratio? (Points :1) 1.67 2.50 0.40 0.60

**accounting**

Canine Company produces and sells dog treats for discriminating pet owners. The unit selling price is $10, unit variable costs are $7, and total fixed costs are $3,300. What are breakeven sales? (Points :1) $11,000 $4,714 $3,300 $7,700

**Accounting**

Case 1. Steve and Linda Hom live in Bartlesville, Oklahoma. Two years ago, they visited Thailand. Linda, a professional chef, was impressed with the cooking methods and the spices used in the Thai food. Bartlesville does not have a Thai restaurant, and the Homs are contemplati...

**math**

15030

**HCA 210**

How has the payment of health care providers evolved over time? What caused these changes?

**Fracture Math words**

3/5 of money is a unit. --------- 3/4 of cube is a young bear. ------- 5/6 of factor is a movie star. ------- 3/7 of segment are people. --------- 1/3 of volume is a pronoun.

**Fracture Math word**

3/8 of kilogram is something wooden.----- 4/5 of space is a step. -----

**Fracture Math word**

3/5 of digit is something you do with a shovel.

**anatomy**

4. What provides the shortest-term mechanism for preventing acid-base imbalances in the body? The longest-term mechanism? Describe each in detail.

**Chemistry**

A freshman studying medicine at an Ivy League College is a part of his class crew team and exercises regularly. After a particularly strenuous exercise session, he experiences severe cramps in his thighs and pain in his biceps. Explain the chemical process that occurred in his...

**8th grade chemistry**

2CuSO4 what does the information above represent? (A) two molecules made of one copper atom, one sulfur atom, and four oxygen atoms. (B) two elements made of one copper atom, one sulfur atom, and four oxygen atoms. (C) two copper atoms, one sulfur atom, and four oxygen atoms. ...

**chemistry**

c2h4(g) + 3O2(g) -> 2 CO2 (g) + 2 H2O (g) What volume of oxygen will react with 18 ml of ehtylene, c2h4, assuming that the gases are present at the same temperature and pressure?

**chemistry**

You have 1.600g mixture of NaHCO3 and Na2CO3. You find that 11.60 ml of 2.00M HCl is needed to convert the sample completely to NaCl, H2O and CO2. NaHCO3 (aq) + HCl (aq) -> NaCl (aq) + H2O (l) + CO2 (g) Na2CO3 (aq) +2HCl (aq) -> 2NaCl (aq) + H2) (l) + CO2 (g) What volume...

**math**

a sale at carney's electronic offers a specific model of sony radio at 20% off the reg price. if the sale price is 45 what is the reg price? would the answer be 54?

**Chemistry**

A sample of gas exerts a pressure of 5.12 atm. What is the pressure of this gas expressed in torr? (3 significant figures, n.nnEn)

**chemistry**

When methanol undergoes complete combustion, the products are carbon dioxide and water. 2CH3OH (l) + 3O2(g) --> 2CO2(g) + 4H2O (g). How much water ( in grams) can you maximally produce if you burn 50g of methanol? In real experiment, you isolate 10 mL of water (d=0.98 g/cm3...

**transformations**

The reflection off the x axis is negative on the outside, don't forget the absolute value symbol: -1/2|x-4|-5

**9th grade**

re-write as y^2-10y-yz+10z and factor 2 and 2 y(y-10)-z(y-10) (y-z)(y-10)

**math 156**

Describe two different ways that you could represent the number 0.80.

**Math**

One of the world's fastest roller coasters is located in a theme park in Valencia, California. Riders go from 0 to 100 miles per hour in 7 seconds. Find the acceleration of the roller coaster during this time interval in miles per second squared.

**History**

Using the documents, analyze African actions and reactions in response to the European Scramble for Africa. DBQ HELP NEED a Thesis or example

**college**

solve the system by the substitution method x=8-4y 3x=5y=3

**ETH 125**

Describe two components to the immigration process from what you found on the USCIS website

**Math**

How would you write the steps out to this problem in words? The answer is suppose to be 1235/48. Thank you for all your help. Greatly appreciated!! (-5)^2+(2/3-1/4)^2+5/2^2/(-3/2)^2

**college**

two organizational departments in a business.

**english**

Wat is a good thesis statement for AIDS?

**english**

Can you please explain to me what this means. Thank you As the characters evolve, Erdrich reveals her major theme--the diminishing hold the distant past has on successive generations as each generation creates and feeds on its own past.

**math**

Healwayswantedabigmack

**Literature**

Can you please tell me what this is trying to say. I don't understand it. It's a paragraph out of a book. Its really confusing to me. Thank you for your help. Sometimes she was hard and apparently without feeling at all; sometimes she was affectionate and rashly impuls...

**reading**

what are context clues?

**math**

make up a set of at least twelve numbers that have the following landmarks. maximum: 8, range: 6, mode: 6, median:5

**English**

I used a novel

**English**

When doing a work cited page do you have to put the pages that you used. I already inserted the pages that I used when I sighted in my paper?

**physics**

Altitude of 575m with zero initial velocity; 8.0s she falls freely; rate of descent et 15m/s^2 until her rate of descent reaches 5.0m/s.At this point she adjust her rocket engine control to maintain that her rate of descent until she reaches ground. How much time is required f...

**Chemistry **

How many grams of CaH2 are needed to generate 54.5L of gas if the pressure of is 815 torr at 20C?

**Chemistry**

The Goodyear blimps, which frequently fly over sporting events, hold approximately 1.90×10^5 ft^3 of helium. If the gas is at 25 C and 1.0 atm, what mass of helium is in the blimp?

**chemistry **

A 1-L flask is filled with 1.25g of argon at 25C . A sample of ethane vapor is added to the same flask until the total pressure is 1.45amt .What is the partial pressure of argon, Par, in the flask?

**Chemestry**

A cylinder with a movable piston contains 2.00g of helium, , at room temperature. More helium was added to the cylinder and the volume was adjusted so that the gas pressure remained the same. How many grams of helium were added to the cylinder if the volume was changed from 2....

**Chemestry**

A cylinder with a movable piston contains 2.00 of helium, , at room temperature. More helium was added to the cylinder and the volume was adjusted so that the gas pressure remained the same. How many grams of helium were added to the cylinder if the volume was changed from 2.0...

**English**

What is a marginalized character?

**UNM**

In an air-conditioned room at 19.0C , a spherical balloon had the diameter of 50.0cm . When taken outside on a hot summer day, the balloon expanded to 51.0cm in diameter. What was the temperature outside? Assume that the balloon is a perfect sphere and that the pressure and nu...

**History**

How many hours does it take by plane from Michigan to get to North Carolina?

**math**

you might want to elaborate more. What exactly is your question? A maths problem sum, or "where is the best palce to look this up..."?

**Chem - oxides**

When an element is burnt in excess oxygen, is the oxide formed always: 1. a crystalline solid 2. greater in mass than the element 3. soluble in water 4. white in color alright, i know that most oxides are not soluble in water other than group 1 elements and calcium and barium....

**world history**

Nationalism refers to an ideology, a sentiment, a form of culture, or a social movement that focuses on the nation. Meaning patriotism, sort of. Like the people love their nation. Nationalism has become one of the most significant political and social forces in history, perhap...

**Chemistry **

The nickle is added as a catalyst.

**Chemistry **

Hi, i would like to know how hydrogen can be manufactured from methane using a nickel catalyst. What must be added to methane in the reaction? +Ni CH4 + ??? -----> H2 + ???

**Chemistry**

ammonium sulfate: (NH4)2SO4 I'm not sure about the rest...

**math**

I think you need to consider that there is Dice A and Dice B, so your ways to achieve a sum of 7 should be: 1+6 2+5 3+4 4+3 5+2 6+1 (because it matters which diced rolled what number) *There are six numbers on each dice, so the total possibilities should be 6x6=36 SO, for achi...

**2nd grade**

This means that you look at the words, see which one of the few are of the same "type". FOr instance, you see that "five" and "nine" are numbers. "fin, pipe, cape, picture" etc are nouns. There are verbs inside as well. Try to sort it ou...

**chemistry**

Write the equation first: NO + O2 ----> NO2 Balance the equation: 2NO + O2 -----> 2NO2 5mols of NO will form 5mols of NO2 so, they ask how many grams, that would be 230g, correct! :)

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