Tuesday

October 21, 2014

October 21, 2014

Total # Posts: 2,210

**Chemistry**

oh and thank you guys
*February 17, 2010*

**Chemistry**

nvm its -545. not quite sure why its exothermic
*February 17, 2010*

**Chemistry**

i get 545 but i'm not getting the right answer
*February 17, 2010*

**Chemistry**

btw, i meant to write 11.9C not 119. i work it like this: 200ml(1g/ml)(4.184J/C)(11.9C) then divide by (40.078g/mol/.732g) i get the wrong answer though
*February 17, 2010*

**Chemistry**

What is the molar heat of reaction? When 0.732 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 119C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay ...
*February 17, 2010*

**chemistry**

Looking up the specifications of an oil online, the spec sheet indicates that the specific gravity of this oil is .93. Does this mean that the oil weights .93 grams / 1 cubic centimeter of oil? Thanks
*February 16, 2010*

**11th grade**

Why is square root of x squared = absolute x? Is it because absolute x = -x and x?
*February 15, 2010*

**geography**

how come 10% of the land could be used to grow crops on ancient china
*February 11, 2010*

**Physics 2**

A cyllindrical copper cable carries a current of 1200 A. There is a potential difference of 1.6×10−2 V between two points on the cable that are 0.24 m apart. What is the radius of the cable?
*February 11, 2010*

**Physics 2**

The heating element of a clothes dryer has a resistance of 11 and is connnected to a 240-V electrical outlet. What is the current in the heating element? If the clothes dryer is run for 5 minutes, how much energy has been delivered to its heating element?
*February 11, 2010*

**Maths**

Width= 12cm because Length= 17cm 12+12+17+17= 58
*February 9, 2010*

**math**

suppose c is a subset of d and d is a subset of c. if n(c) = 5, find n (d).
*February 8, 2010*

**English 101**

Arriving at Lake Powell in a thunderstorms the campers found it safer to remain in their cars that setting up their tents.
*February 8, 2010*

**att DR BOB**

let me rephrase my question. A Mole of ethyl alcohol weights 46g.How many grams of ethyl alcohol are needed to produce 1 L of a 2 milimolar solution? I know the answer is 0.092g but I dont know how to derive it
*February 7, 2010*

**chemistry**

how many grams of ethyl alcohol are needed to produce 1 L of a 2 mM solution if 1 mole =46g of ethyl alcohol. how do you calculate?
*February 7, 2010*

**Calculus II**

How does one obtain cos2x = cos^2(x) - sin^2(x) by differentiating the identity sin2x = 2sinxcosx
*February 6, 2010*

**Computer Applications-87**

how is word used to create the componenet of a research paper
*February 5, 2010*

**Algebra**

3(a+2)=4a
*February 5, 2010*

**science**

what happens to the population of butterflies after a predator comes through? answer must include the words, gene and natural selection
*February 4, 2010*

**science**

what happens to butterflies after a predator come through include the word gene and natural selection
*February 4, 2010*

**math**

Suppose you have a friend named Ed. He and his four friends are having ice cream. There are only three flavors available at the ice cream store they are visiting: chocolate, vanilla, and strawberry. One of Ed’s friends, Stacey, eats chocolate exclusively. How many ...
*February 3, 2010*

**math**

what is the ratio of 1/2 to 1/4?
*February 3, 2010*

**math **

whats the ratio of 6 to 9?
*February 3, 2010*

**math**

the ratio of the consumption of gas to new york one year to that in chicago was 7/4.if 120 billion cubic feet wereconsumed in chicago,what was the consumption in new york?
*February 3, 2010*

**math**

the ratio of the consumption of gas to new york one year to that in chicago was 7 if 120 billion cubic feet were - 4 . consumed in chicago,what was the consumption in new york?
*February 3, 2010*

**MATH**

two boys weigh 120 pounds.what is the ratio of the weight of the first to that of the second?
*February 3, 2010*

**math**

find the ratio of 4 2 2 3 - x to - x of - ab 5 5 , 4 to 1 1 1 - ac of 2- to 7- of .7m to .8m, of 2 , 2 2, 2 2 2 ( x -y ) to (x-y) .
*February 3, 2010*

**math **

what is the ratio of 1 1 of 1 - to - - to 2 4?, 2 1 2 3 - - to- 3?,of 3 4?
*February 3, 2010*

**math **

what is the ratio of 1 1 of 1 - to - - to 2 4?, 2 1 2 3 - - to- 3?,of 3 4?
*February 3, 2010*

**math**

express it its lowest terms the ratio of 6 to 9:of 12x to 16y:of am to bm:of 20ab to 10bc: of m+n to 2 2 m -n.
*February 3, 2010*

**math**

a heavy freight train made a trip of 360 miles, running part of the distance at 54 miles an hour and the rest at 48 miles an hour.if the entire trip took 7 hours,find the distance traveled at each rate.
*February 3, 2010*

**Chemistry**

Idk my teacher gave me this question for homework and i had no idea how to do this. But this has to do with molarity and stoichiometrty if that helps
*February 2, 2010*

**Chemistry**

50 mL of 1M silver Nitrate is combined with 25 mL of 2 M potassium Chloride. What is the concentration of a resulting solution
*February 2, 2010*

**math**

They multiply by dividing
*February 2, 2010*

**ethics**

the difference between psychological and ethical egoism?
*January 31, 2010*

**math**

a group of friends shared the expenses of an automobile trip,which cost $40.if there had been 3 more people in the group.each would have $3 less.how many people were there in the group and how much did each pay?
*January 28, 2010*

**economics**

are there hidden environmental and social costs
*January 26, 2010*

**math**

find the worlds production of nickel in a year when russia and new caledonia together produced 1/3 of it,canada 1/6 of it,and australia 1/9 of it, and the rest of the world 420,000 tons
*January 24, 2010*

**math**

find the worlds production of nickel in a year when russia and new caledonia together produced 1/3 of it,canada 1/6 of it,and australia 1/9 of it, and the rest of the world 420,000 tons.
*January 24, 2010*

**math**

find the worlds production of nickel in a year when russia and new caledonia together produced 1/3 of it,canada 1/6 of it,and australia 1/9 of it, and the rest of the world 420,000 tons.
*January 24, 2010*

**e**

This is true, but how does picking out something for someone become moral vs immoral? if they ask me to pick it out for them and i pick something that makes them look bad am i being immoral because i knew that they wouldn't look good? Are they being immoral for asking me ...
*January 23, 2010*

**ethics**

i believe that depending on the person that these could be either moral or immoral.
*January 23, 2010*

**ethics**

Thanks for the info. I still can't separate the two. Any examples you could give? If someone asked me to pick out something would that be a moral issue or immoral issue? I'm so confused
*January 23, 2010*

**ethics**

what is the difference between a moral and immmoral issue?
*January 23, 2010*

**Science**

l'm sorry l have another question about watersheds >< What can we do to protect the water where you live?
*January 20, 2010*

**Science**

What are watersheds and why should they be protected? What could you do to protect watersheds? I'm supposed to find sthe answer to this, but my textbook doesn't say anything about why it's useful to humans... the only thing that it tells me is that it's an area...
*January 20, 2010*

**math**

In a particular house,the bedrooms take up 1/3 of the total floor area, and the living room takes up another 1/5.If the rest of the house has an area of 700 square feet,find the area of the living room and area devoted to bedrooms.
*January 20, 2010*

**algebra**

In a particular house,the bedrooms take up 1/3 of the total floor area, and the living room takes up another 1/5.If the rest of the house has an area of 700 square feet,find the area of the living room and area devoted to bedrooms.
*January 20, 2010*

**5th grade**

use the following set of numbers to find different landmarks : 42,16,37,42,16,42,51
*January 19, 2010*

**8th grade**

What happens when the kinf of beasts runs in front of a train
*January 14, 2010*

**Algebra**

Solve 2xy + 4
*January 13, 2010*

**english**

Marie found it hard to choose between the seventeen books on the life of Emily Dickinson. "If there were less books it would be an easier choice," she said.
*January 13, 2010*

**accounting ethics**

n what circumstances would each approach to stakeholder impact analysis (moral standards, five-question, and Pastin’s approach) be most useful? Summarize the approaches and describe when each would be most or least useful.
*January 13, 2010*

**OCHEM**

Pg 201 of techniques under the subtitle "Poor Separation of a Mixture" should answer #2 for you.
*December 22, 2009*

**Advanced Math**

thanks for you help and especially explanation
*December 22, 2009*

**Advanced Math**

log10x + log10(x+1)=1 In other words log base 10 + log base 10(x+1)=1 I need to show it algebraically not using calculator Thanks a lot !
*December 22, 2009*

**Math**

The area of a room is 200,000 cm2. How many square meters is that
*December 14, 2009*

**science**

give an example of how metallic bonding allows metals to conduct electric current.
*December 13, 2009*

**LA new**

identify partciple and word participle that it modifies 1)TAKEN for Granted by most of us, paper is an seesantial part of our lives 2)The PAPER Used today has developed over many centuries 8)Modern paper, however,started with a chineses INVENTOR Serving emperor he di 9)The ...
*December 10, 2009*

**LA cont**

underline infinitive and write how its used
*December 10, 2009*

**LA cont**

5)The class approved the decision to offer tutoring services to YOUNGER children:adverb 6)Kara's plan is to take a trip to AUSTRALIA next year:adverb
*December 10, 2009*

**lA cont.**

identify Gerund and gerund phrase write how its used:S for subject PN for predicate nomitave DO for direct object or OP object of a prepsition CHEERING THE TEAM gave me a sore thorat: S Joanna's mother enjoys PRESERVING FRUITS AND VEGETABLES:DO We stopped him from TELLING ...
*December 10, 2009*

**LA**

identify infinitves and write how it is used which are noun adjective or adverb 1)To UNDERSTAND the difference between a democracy and a republic is important :noun 2)The captain struggled to REGAIN control of the foundering ship:adverb 3)Megellan's ship was the first to ...
*December 10, 2009*

**Earth Science**

According to Kepler's law of harmonies, which planet takes the longest to orbit the Sun?
*December 10, 2009*

**Geography**

The waters surrounding Japan and the nearby ocean currents help to make Japan's climate mostly what?
*December 9, 2009*

**Math**

Find the x and y intercepts of a line that is perpendicular to the line y = -9/8x + 1 and passes through the point (18, -8).
*December 8, 2009*

**english**

what is the difference between an irregular verb and a past pariciple?
*December 6, 2009*

**college microeconmics**

What is profit maximization condition for a firm? Explain why this condition must hold. Present a logical explanation and a graphical one. What is a "breakeven" point? Will a breakeven point always be present for a firm? Could there be more than one breakeven point? ...
*December 2, 2009*

**Math**

How do you estimate the quotient of 193 divided by 6
*November 30, 2009*

**math**

hi,I do not think i'm doing this problem correctly, I know I have the steps I just think i'm solveing it wrong. 1/2 x p + 1/6 = 1 1/2 _ is the answer 2.6
*November 29, 2009*

**math**

1.5+4/5a=21 Solve what a equals
*November 29, 2009*

**spanish**

Siga recto en 13 para la plaza de Allende. a la derecha en la calle de Pepe Llanos de Biblioteca Pública de San Miguel. are these the correct form
*November 26, 2009*

**spanish**

how do you say these sentences in spanish? Go straight ahead at 13 for plaza de Allende. Make a right at Pepe Llanos street for Biblioteca Publica de San Miguel.
*November 26, 2009*

**Physics**

I'm not sure how to calculate this question help me! (Grade 11 Physics) it's sound intensity... Show me how to do it please! (textbook says answer is 3.5 m) At close proximity, rustling leaves have a sound intensity of about 1.2 x 10^-11 W/m squared. At what distance ...
*November 25, 2009*

**8th grade**

do u have more info about identify population sample and sampling method
*November 23, 2009*

**8th grade**

i need help with identify population sample and sampling method
*November 23, 2009*

**spanish**

how about after that i wull go to a birthday party. Then I would go get dinner.
*November 19, 2009*

**spanish**

how do you say after that i will go to the bus station and next i will eat cake in spanish
*November 19, 2009*

**physics**

A 0.25 kg stone tied to a 0.5 m string whirls at a speed of 4 m/s. What is the centripetal acceleration acting on the stone?
*November 19, 2009*

**Statistics**

A researcher interested in relationships developed a questionnaire that measures the degree of affection adult men feel for their fathers. She has found that for the general population the distribution is skewed to the right, the mean degree of affection is 60, and the ...
*November 11, 2009*

**physics**

If a discus thrower rotates through the last 45 degrees of a turn in .11s and the distance from the axis of rotation to the center of the discus is 1.22m, calculate the average linear velocity of the discus.
*November 4, 2009*

**Math**

Identify the conic section whose equation is given: x2 + 10x + y2 + 12y = 60
*November 3, 2009*

**Math**

State whether the equation y=10^3x represents a linear, quadratic, or exponential function. Tell how you decided. I think it is exponential, is this correct
*November 2, 2009*

**Physics**

25930.59 watts
*November 2, 2009*

**geography**

I need two facts that explain the large population growth of central mexico ? thank you
*October 31, 2009*

**Business**

Have written codes of unethical conduct become less important today because of presence of so many self-managing work teams?
*October 27, 2009*

**biology**

I am trying to find three plants that belong to the same species, with both their common and Latin names.
*October 27, 2009*

**Physics**

Haven't you made mistakes in two of those unit conversions? 0.61g = 0.00061kg not 0.0061kg, and 17cm = 0.17m not 0.017m.
*October 26, 2009*

**Calculus **

Let r be the monthly rent per unit in an apartment building with 100 units. All the units are rented at r= $900. One unit becomes vacant for each $10 increase in rent. Maintenance cost are $100 for occupied units and nothing for unoccupied units..... so A) show that the number...
*October 26, 2009*

**Math**

A spherical tree ornament is to be painted in bright colors. If the ornament has a diameter of 4 cm, how much paint is needed?
*October 25, 2009*

**Math**

A water delivery truck with a cylindrical tank measuring 8 ft in diameter and 8 ft long dispenses water to drought victims in cartons measuring 6 in. × 6 in. × 12 in. How many victims will get a full container of water
*October 25, 2009*

**chemistry**

How do I figure this out? In the reaction CS2 + 3O2 → CO2 + 2SO2, when 160 g of CS2 and 195 g of O2 are reacted, the theoretical yield of SO2 is 260 g.
*October 24, 2009*

**math**

mrs.ellis is 28 years older than her daughter. in 11 years she will be 3 times as old as her daughter. how old is each now?
*October 24, 2009*

**math**

solve and check results 3x + 7(x-2)-13=12-3x
*October 24, 2009*

**math**

1. unite similar terms with parenthesis. x=2 y=-3 and z=5 find the value of ax to the 2nd power-cy+ax-2ax to the 2nd power+ 2cy to the 2nd power-ax-cy to the 2nd power+ ax to the 2nd power+ cy
*October 24, 2009*

**latin**

how do you say intelligent, athletic and funny in latin?
*October 24, 2009*

**Math**

LR 56 HR 70
*October 22, 2009*

**Marketing**

I have to create a tv commercial for Red Lobster but I don't have any ideas how to do it. Plus I need some tips on how to make a tv advertisement
*October 21, 2009*

**trig**

I need HELP Verify the identity Cot3X/CSCX=cosX(csc2X-1)
*October 21, 2009*

**spanish**

It means where are the hot women
*October 21, 2009*

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