Thursday

September 29, 2016
Total # Posts: 2,540

**organic chemistry**

What's an equation of the hydrolysis of one ester group in tannins by CaCO3?

*April 14, 2010*

**Chemistry**

Calculate the percent by mass of water in magnesium sulfate heptahydrdrate (MgSO4-7H2O)

*April 13, 2010*

**Chemistry**

Which of the following substances dissolve to a significant extent in water? Explain your answer in terms of polarity. a) CH4 b) KCL c)He d)MgSO4 e)sucrose f)NaHCO3

*April 13, 2010*

**Chemistry**

Calculate the percent by mass of water in magnesium sulfate heptahydrdrate (MgSO4-7H2O)

*April 13, 2010*

**calculus**

Thank you very much. I think somewhere between wrong slopes and a mix-up in the point-slope form equation, I messed up the equations. But I got it now. Thanks a lot!

*April 13, 2010*

**calculus**

Oops, for the interval of the first one it's [-5,2]. Typo.

*April 13, 2010*

**calculus**

Hi, I have online homework for calculus and I have to input two equations that will describe this graph. I have an image but Jiskha won't let me link to any websites... if this is allowed the URL to the image of the graph is img145.imageshack.us/ img145/1787/80193630 .png ...

*April 13, 2010*

**algebra**

solve by elimination 7r-3s=-17 3r+7s=59

*April 11, 2010*

**Economics**

If the government wanted to encourage a monopoly to produce the socially efficient quantity, should it use a per-unit tax or a per-unit subsidy? Explain how this tax or subsidy would achieve the socially efficient level or output. Among the various interested parties—the ...

*April 9, 2010*

**economics**

. If the government wanted to encourage a monopoly to produce the socially efficient quantity, should it use a per-unit tax or a per-unit subsidy? Explain how this tax or subsidy would achieve the socially efficient level or output. Among the various interested parties—...

*April 8, 2010*

**Math**

10 multiple choice questions each with three possible answers only one of which is correct. A student guesses the answer to every question. (a)What is the probability that the student will answer the first six questions correctly and the rest incorrectly? (b)What is the ...

*April 7, 2010*

**XECO 212**

How would I go about finding the answer to economists are quoted using normative statements in 2011?

*April 6, 2010*

**accounting**

Prepare adjusting journal entries for the year ended (or date of) December 31, 2005, for each of these separate situations. Assume that prepaid expenses are initially recorded in asset accounts. Also assume that fees collected in advance of work are initially recorded as ...

*April 6, 2010*

**Chemistry**

Lithium nitride reacts with water to form ammonia and aqueous lithium hydroxide. Li3N(s) + 3H2O(l) ==> NH3(g) + 3LiOH(aq) a)What mass of water is needed to react with 32.9g Li3N? b)When the above reaction takes place, how many molecules of NH3 are produced? c)Calculate the ...

*April 5, 2010*

**Chemistry**

Methanol (CH3OH) is used in the production of many chemicals. methanol is made by reacting carbon monoxide and hydrogen at high temperature and pressure. CO(g) + 2H2(g) ==> CH3OH(g) a) How many moles of each reactant are needed to produce 3.60 x 10^2 g CH3OH? b)Calculate ...

*April 5, 2010*

**Physics**

How much energy is needed to melt 0.225 kg of lead so that it can be used to make a lead sinker for fishing? The sample has an initial temperature of 27.3 degrees celsius and is poured in the mold immediately after it has melted. Not sure if this is relevant to finding the ...

*March 30, 2010*

**Physics**

How much energy is needed to melt 0.225 kg of lead so that it can be used to make a lead sinker for fishing? The sample has an initial temperature of 27.3 degrees celsius and is poured in the mold immediately after it has melted. Not sure if this is relevant to finding the ...

*March 30, 2010*

**geometry**

2 complementary angles are in the ratio of 5:13. Find the measure of each angle?

*March 28, 2010*

**Chemistry**

If 50.0 g of silicon dioxide is heated with an excess of carbon, 27.9g of silicon carbide is produced. SiO2(s) + 3C(s) --> SiC(s) + 2CO(g) what is the percent yield of this reaction?

*March 28, 2010*

**Chemistry**

When 84.8 g of iron(III) oxide reacts with an excess of carbon monoxide, iron is produced. Fe2O3(s) + 3CO(g) ==> 2Fe(s) + 3CO2(g) what is the theoretical yield of iron?

*March 28, 2010*

**HSM240**

I need an opinion please. My assignment says write 1,750- to 2,100-word proposal paper on a social program that you create. Pretend that you have the power and capacity to create an agency or organization and decide to create a new social program. Can you tell me if I am on ...

*March 27, 2010*

**medical -health**

you woek in the hospital's health information management department. part of your job is to assist the medical residents with completing records documenttation. one of the residents complains that he doesn't understand why insurance companies need so much documentation...

*March 16, 2010*

**ap physics**

work=20,580J power=686 watts

*March 14, 2010*

** History**

Which Native American tribe were the traditoinal alliis of New France

*March 12, 2010*

**Algebra**

Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 1/5x -1/4 y = 3 2/5x + 1/2y = 2

*March 11, 2010*

**Statistics**

A card is picked at random from a pack of 20 cards numbered 1-20. given that the cards shows an even number, find the probability that it is a multiple of 4

*March 9, 2010*

**chemistry**

what mass of sodium acetate, NaCH3CO2, must be added to 1.0 L of 0.10 M acetic acid to give a solution with a pH of 4.50?

*March 9, 2010*

**Chemistry**

kilojoules to heat 250kg of gold from 18c to 184c

*March 8, 2010*

**science**

What is the net force of 25n downward and 45n upward?

*March 4, 2010*

**FINANCIAL MANAGEMENT FOR HUMAN SERVICE MANAGERS**

Explain your understanding of the two procurement strategies listed in the text. Which of the two procurement strategies is most effective for a human service agency? Explain your reasoning.

*March 4, 2010*

**2nd grade**

how do I count the vertices of a rectangle

*February 23, 2010*

**Organic chem**

methanol*

*February 20, 2010*

**Organic chem**

I just need some clarification regarding SN1 reactions Okay...so a reaction with a secondary ALKYL HALiDE + CH3OH (Methanal), why is the nucleophile CH3O? why doesn't it dissociate to give CH3 and OH?

*February 20, 2010*

**pre calc**

1. For the following functions listed below: (a) f(x) = -2cosx f(x) = 0.25sinx (b) f(x) = -3sin(2x+3)+7 f(x) = sinx + 4 Find : (i) the amplitude (ii) the period

*February 12, 2010*

**Math**

MISSING DIMENSION ROUND TO NEAREST TENTH.. QUESTION; THE SCALE OF A MAPIS 3in =6.82 mi map :_________ in actual 2.3 mi

*February 10, 2010*

**math**

The cargo area of the deck of a barge is 60 ft wide. Cargo containers are 7 ft wide, and can be placed side-by-side with a gap of 6 in between them. How many containers may be placed side-by-side on the deck of the barge?

*February 10, 2010*

**math**

The last-place finisher in the 2006 Nissan Golf Tournament won $9,078. How many tournaments would a person earning this much have to play in to reach $1 million?

*February 10, 2010*

**Math**

what type of example can you give me using the 3 quantities (amount, base and rate)given as to how to solve each when one is missing?

*February 10, 2010*

**history**

What were the names of Herbert Hoover's son's 2 pet alligators?

*February 7, 2010*

**English**

How does one cite from this form in APA form? I want to use something that would work for me but I don't know how to cite from this form. Please help.

*February 6, 2010*

**physics**

It's the anser in the book... Schaum's outline, college physics... 10th edition???

*February 3, 2010*

**physics**

What displacemtn at 70 degrees has an x-component of 450m? What is its y-component? I know the answers are 1.3 and 1.2... but don't know how to work it out?? PLEASE HELP!!

*February 3, 2010*

**11th grade**

What do you call a female bug that floats? it has to do with algebra. It shows you solutions and graphs. the graphs have letters in front of them so you can try and figure out what the answer is.

*February 3, 2010*

**Language Arts**

What are some articles on "Hate Crimes" do to Race, Religion, Sex, Ethnic Background...etc.?

*February 2, 2010*

**accounting**

What does a zero economic profict mean?

*January 31, 2010*

**biology**

3. In what cells do meiosis and mitosis take place? 4. If one strand of DNA, had bases ordered ATCCGTC, what would be the bases of its other strand?

*January 31, 2010*

**Accounting**

Selected transactions for D. Reyes, an interior decorator in her first month of business, are as follows. Jan. 2 Invested $10,000 cash in business. 3 Purchased used car for $4,000 cash for use in business. 9 Purchased supplies on account for $500. 11 Billed customers $1,800 ...

*January 29, 2010*

**Bus/210**

i need to know about a business scenario

*January 28, 2010*

**math**

excuse me? can you please help me with my math problems please? Thank You.

*January 27, 2010*

**math**

Karla borrowed $750 at 12 percent for one year. She paid a $20 processing fee. The interest paid will be $95.00, $92.50, or $90.00 Thus, the total finance charge (the interest plus the processing fee) will be? $115.00, $112.50, or $110.00 ? Therefore, to the nearest tenth, the...

*January 27, 2010*

**math**

Show that some problems have more than one answer by giving at least two answers to the following problem. What change would a restaurant cashier give someone for $1 if he used no more than four of any coin and no coin smaller than a nickel or bigger than a quarter?

*January 22, 2010*

**math 156**

is this statement (If you lay in the hot sun for 4 hours, you will become sunburned. Nicole is not sunburned. Therefore . . .) considered a affirming, hypothesis or denying conclusion?

*January 22, 2010*

**math 156**

If Ellen works overtime on Sunday or Wednesday night and Thursday night, she will earn enough money to buy a tennis racket. Does this give her two or three chances to earn enough money? Explain your reasoning.

*January 22, 2010*

**math 156**

give the statement in each sequence of statements: a.1/0.5=2 2/0.5=4 3/0.5=6 4/0.5=8 5/0.5=10 6/0.5=12? b.5x4=20 5x14=70 5x4=120 5x34=170 5x44=220 5x54=270?

*January 22, 2010*

**math 156**

name five problem solving strategies that are frequently used?

*January 22, 2010*

**math 7th**

9+2-(10x+2) Does the - before the parenthesis change the sign of the numbers inside of the parentheis? ie. Does 10x become -10x and does +2 become -2? Thanks!

*January 21, 2010*

**Algebra (9th grade)**

find 30% of 21.50 and subtract that from the 21.50. That is your sale price, then find 7% of the sales price and add it onto the sale price. That is your final price.

*January 21, 2010*

**Principles of Accounting**

Paid creditor $300 cash on balance owed.

*January 21, 2010*

**math**

What strategy did you use in solving this problem? 22. Suppose that you wanted to find the whole numbers represented by each of the letters in the following addition problem: Which problem-solving strategy might be most helpful to you in solving this problem? (You need not ...

*January 20, 2010*

**math**

Jennifer considered the numbers 4, 24, 44, and 64 and noticed that they all ended in 4 and that they can be divided evenly by 4, leaving no remainder. She concluded that all numbers that end in 4 can be divided evenly by 4. What type of reasoning did Jennifer use? Is her ...

*January 20, 2010*

**pre algebra**

the digits 0,1,2,3,4,5,6,7,8,9 are repeated in such a way thatwhen the digits repeat the greatest digit is removed the pattern is repeated indefinitely what is the 1111st digit in this pattern?

*January 19, 2010*

**physics**

A car travels 0.90 km at an average speed of 84.8 km/h and then 0.97 km at an average speed of 41.6 km/h. What is the car's average speed during the 1.87 km interval?

*January 15, 2010*

**english**

what is being said in the following line: “Foul devil, for God’s sake, hence, and trouble us not; For thou hast made the happy earth thy hell, Fill’s it with cursing cries and deep exclaims.”

*January 15, 2010*

**pre calc**

which one is the correct answer

*January 14, 2010*

**pre calc**

so that is the answer

*January 14, 2010*

**pre calc**

A square is drawn inside a square. Find the area of the square as a function of the radius of the circle.

*January 14, 2010*

**biology**

Organic compounds-a)carbohydrates b)lipids c)proteins d)nucleic acid (Explain what each organic compound is and why it is important to the cell)

*January 13, 2010*

**MAT 116 Week 6 quiz**

Identify the solutions of the system of equation if any -3x -4y=2 and 8y=-6x-4

*January 10, 2010*

**alg3**

how do i factor the perfect square trinomial 9x2-12x+4

*January 7, 2010*

**pre calc**

Find 2 functions defined implicitly by the given relations: (a) x² + y² = 25 (b) y² = x²

*January 4, 2010*

**college essay topic**

like how should i start it off to make it interesting

*December 31, 2009*

**college essay topic**

what can be my topic for this college essay? Write an essay about yourself and the events in your life which have made a difference in the way you view yourself and others.

*December 31, 2009*

**social science **

can you give me some for the republican

*December 22, 2009*

**social science **

WHAT ARE WORDS THAT REPRESENT THE DEMOCRATIC PARTY STARTING WITH D,E,M,O,C,R,A,T,I,C

*December 22, 2009*

**Math/Algebra**

Write the equation of the line that goes through the point (8,-2) and has a slope of -4. (1 point) Is the answer y=-4x-32 Thanks.

*December 21, 2009*

**physics**

What will a spring scale read for the weight of a 50 kg woman in an elevator that moves as follows? (a) upward with constant speed of 3.0 m/s Enter a number.1 N (b) downward with constant speed of 3.0 m/s Enter a number.2 N (c) upward with acceleration of 0.35g Enter a number....

*December 18, 2009*

**pre calc**

The Identity Function The Squaring Function The Cubing Function The Reciprocal Function The Square Root Function The Exponential Functional Lo The Natural Logarithum Function The Sine Function The Cosine Function The Absolute Value Function The Greatest Integer Function The ...

*December 18, 2009*

**spanish **

el estado para los turistas Flordia

*December 12, 2009*

**spanish **

I am trying to say the state where the tourists travel

*December 12, 2009*

**spanish **

how do you say the state for tourists in spanish?

*December 12, 2009*

**3rd grade math**

diameter pd 8-pound test line in wordsand as a fraction

*December 10, 2009*

**pre calc**

how can you tell it has neither

*December 10, 2009*

**pre calc**

so what about this one g(x)=1.5^x

*December 10, 2009*

**pre calc**

find all the horizontal and vertical asymptoes of the functions f(x)=x/(x-1) q(x)=(x-1)/x

*December 10, 2009*

**Earth Science**

Domes

*December 10, 2009*

**Trigonometry**

cos[theta]=sin[theta]

*December 10, 2009*

**physics**

Force 1=450 N and it is 10 degrees west of the vertical and Force 2= 380 N and it is 30 degrees easy of the vertical. I have to find the resultant of the two

*December 9, 2009*

**math**

-220 - 16 x 32

*December 8, 2009*

**geometry**

-220 - 16 x 32

*December 8, 2009*

**physics**

Two events in S are separated by a distance D=x2 - x1 and a time T = t2 - t1 . a) Use the Lorenrz transformation to show that in frame S' , which is moving with speed v relative to S, the time separation is t2 - t1 = ã(T - vD/c2 ). b) Show that the events can be ...

*December 7, 2009*

**Literature**

In Charles Dickens' "A Christmas Carol", what was the reason for Marley's jaw dropping when the bandage was removed? (Stave 1)

*December 7, 2009*

**social science**

never mind i figured it out

*December 6, 2009*

**social science**

so why would i make the assumptions about both

*December 6, 2009*

**social science**

What are 3 things that associate with the Democratic Party? What are 3 things thatssociate with the Republican Party?

*December 6, 2009*

**trig**

sec(15[pi])/(8)

*December 6, 2009*

**BIOLOGY**

What are some examples food web. What are some examples of food chains? Discuss the plants and animals that make up the food web immediately surrounding a school.

*December 6, 2009*

**accounting**

From owner:Adjust cheque #171 to Fundy Gift House. The cheque amount was 600.00 in partial payment of invoice #FG-361.

*December 5, 2009*

**spanish 2**

how do you say these in spanish You can go by car, train, bus, or walk. and plan for a day in the city

*December 3, 2009*

**pre calc**

so how do you write the domain as a equation

*December 2, 2009*