Sunday

April 20, 2014

April 20, 2014

Total # Posts: 1,882

**Essay Writing**

I need help with parallel structure. My essay is contrasting cats and dogs, with cats being the superior (sorry dog lovers). One paragraph is to be block method the other is to be point by point. II. Body A. Needs 1. Feeding a. Cats b. Dogs 2. Training a. Cats b. Dogs 3. Groom...

**Essay Writing**

I need help with making my outline parallel. II. Body A. Needs 1. Feeding a. Cats b. Dogs 2. Training a. Cats b. Dogs 3. Grooming a. Cats b. Dogs 4. Medicating a. Cats b. Dogs B. Personalities 1. Cats a. Playing b. Vocalizing c. Independence

**math**

the formula is that you add 5+9= 14 divide 120/14 and I keep getting a decimal, and then you would multiply that number by 5 and 9, and when those 2 numbers add up it would equal 120.. I just cant seem to figure this out though

**math**

Mix B= 5 cups of fruitjuice ; 9 cups of soda For this mix how much fruit juice and how much soda are needed to make punch for 240 people( each person gets half a cup of punch)

**AP Chem**

87. At what temperature would CO2 molecules have an rms speed equal to H2 molecules 25 degrees C? First I got the rms of H2 to be 1927.3 by taking u= sq root (3*8.31*298)/(.002 Then I tried to find the temp of CO2 by using 1927.3 sq root .044/ sq root (3*8.31) and I got 81.0 K...

**chemistry**

I'm not sure, but I think if you had lemonade with pulp it would be a heterogenous mixture because the mixture would not all look the same; you would have the liquid and the pieces of pulp.

**Life Science**

chloroplasts

**7th Grade Math**

first subtract 11 from both sides you get z/6 > -60 then multiply both sides by 6 you get z > -120

**Eighth Grade Science**

a temperature can't be celsius and K at the same time. which one is it?

**Molecular Speeds**

My work: At 25 degrees C u= sq rt. (3 * 8.31 * 298)/(2.80*10^-3km/mol) u= 16.3 m/s^2 At 125 degrees C u= sq root (3*8.31*398)/(2.80*10^-3km/mol) u= 18.8 m/s^2 those answers are wrong. and i don't know how to do the graph

**Molecular Speeds**

Can someone just work me through how to do this one problem? I should be OK on the rest then. Calculate the rms speeds of N2 molecules at 23 degrees C and at 125 degrees C. Sketch the approximate curves of the molecular speed distributions of N2 at 25 degrees C and 125 degrees...

**AP Chem**

Oh, I think I got it. Is it only when the gas is collected OVER water?

**AP Chem**

When dealing with gasses, do you subtract the pressure of water vapor every time it is in the equation? I'm confused on when you subtract it. Such as this problem... NH4NO2(s) -> 2H2O(g) + N2(g) How many grams of ammonium nitrate must have reacted if 3.75 dm^3 of nitrog...

**AP Chem**

Would someone please check these for me? 52. In an experiment, you fill a heavy-walled 5.00-L flask with methane gas, CH4. If the flask contains 7.13 g of methane at 19 degrees C, what is the gas pressure? 2.14 atm 56. A 2.50-L flask was used to collect a 5.65-g sample of prop...

**preschool**

obvisley cause It is preschool

**Spanish**

I tried and failed miserably. I have no idea whether to use preterite or imperfect but I can send you what I attempted. 1. Eran las tres cuando ella levanto para empezar el dia. 2. Mientras Philip fried (I don't know the word for fried) las papas en aceite, Elena paso la a...

**Spanish**

Thank you so much! I have a PC. Sorry I didn't have the accents but I don't know how to do them on the computer. :(

**Spanish**

Okay that's all of them Sra. If it is possible can you please check my work and help me figure out the words I did not know?

**Spanish**

I tried and failed miserably. I have no idea whether to use preterite or imperfect but I can send you what I attempted. 1. Eran las tres cuando ella levanto para empezar el dia. 2. Mientras Philip fried (I don't know the word for fried) las papas en aceite, Elena paso la a...

**Spanish**

Can you please help me translate these sentences using preterite vs. imperfect? 1. It was three o'clock when she got up to start the day. 2. While Philip fried the potatoes in oil, Elena vaccumed the living room. 3. Before leaving, I turned off the lights and closed the do...

**8th grade science**

ya so Get over the Fact u cant get a life drop out of school.

**Chem**

81. Formic acid HCHO2, is a convenient source of small quantities of carbon monoxide. When warmed with sulfuric acid, formic acid decomposes to give CO gas. HCHO2(l) -> H2O(l) + CO(g) If 3.85 L of carbon monoxide was collected over water at 25 degrees C and 689 mmHg, how ma...

**AP Chem**

Phosphorus pentachloride is a white solid that sublimes (vaporizes without melting) at about 100 degrees C. At higher temperatures, the PCl5 vapor decomposes to give phosphorus trichloride and chlorine. How could gas-density measurements help to establish that PCl5 vapor is de...

**AP Chem**

Ammonium Chloride is a white solid. When heated to 325 degrees C, it gives a vapor that is a mixture of ammonia and hydrogen chloride. Suppose someone contends that the vapor consists of NH4Cl molecules rather than a mixture of NH3 and HCl. Could you decide between these alter...

**AP Chem**

Phosphorus pentachloride is a white solid that sublimes (vaporizes without melting) at about 100 degrees C. At higher temperatures, the PCl5 vapor decomposes to give phosphorus trichloride and chlorine. How could gas-density measurements help to establish that PCl5 vapor is de...

**AP Chem**

Ammonium Chloride is a white solid. When heated to 325 degrees C, it gives a vapor that is a mixture of ammonia and hydrogen chloride. Suppose someone contends that the vapor consists of NH4Cl molecules rather than a mixture of NH3 and HCl. Could you decide between these alter...

**AP Chem**

Help with these two please. 105. A radioactive metal atom decays (goes to another kind of atom) by emitting an alpha particle (He+2 ion). The alpha particles are collected as helium gas. A sample of helium with a volume of 12.05 mL was obtained at 765 mmHg and 23 Degrees C. Ho...

**AP Chem**

I thought that you always had to use atm in the equations.

**AP Chem**

Can someone please check these problems? 34. You fill a balloon with helium gas to a volume of 2.68 L at 23 degrees C and 789 mmHg. Now you release the balloon. What would be the volume of helium if its pressure changes to 632 mmHg but the temperature is unchanged? 3.35 L 38. ...

**Math**

I think it would be 28/100. Because if 72/100 is used for work then the rest of that would be 100-72 which is 28. And percents are over 100.

**Chem**

Can someone check these homework answers please? 32. The barometric pressure measured outside an airplane at 9 km was 259 mmHg. Calculate the pressure in kPa. 34.5 kPa 36. A diving bell is a container open at the bottom. As the bell descends, the water level inside changes so ...

**Biology**

One of the structures a cell uses to live,grow,and reproduce

**Investments/Portfolio Mgt**

How would the following be solved... Consider a risky portfolio. The end-of-year cash flow derived from the portfolio will be either $50,000 or $150,000, with equal probabilities of 0.5. The alternative riskless investment in T-bills pays 5%. a. If you require a risk premium o...

**History- The Constitution**

How does the elastic clause keep the Constitution "alive"? Give two examples of checks and balances.

**chem**

thank you

**chem**

What is the relationship between kPa and atm when dealing with measurements of pressure of a gas?

**chem**

A vessel containing 39.5 cm^3 of helium gas at 25 degrees celsius and 106 kPa was inverted and placed in cold ethanol. As the gas contracted, ethanol was forced into the vessel to maintain the same pressure of helium. If tihs required 7.7 cm^3 of ethanol, what was the final te...

**AP Chem**

ooh ok that explains it lol thanks =]

**AP Chem**

I did that and got -22.7. 1st of all the answer is supposed to be .65 L 2nd of all where does the negative go?

**AP Chem**

Helium gas, He, at 22 degrees C and 1.00 atm occupied a vessel whose volume was 2.54 L. What volume would this gas occupy if it were cooled to liquid-nitrogen temperature (-197 degrees celcius). What is the equation?

**other**

i have four legs but can stand on one, i come out in the daylight but not in the sun. i have two sisters who our in power, my grandmother looks like a natural flower. some say im old but i feel like new, i stick to the bottom of your shoe! what am i?

**Essay**

I wrote an essay of examples on how cosmetics produce a flawless face. The title I came up with is Fixing Feminine Features. I don't know if I like it of not, but I wanted to do something that caught attention. Any tips?

**AP Chem**

A sample of H2 is collected by displacing 145 mL of water. The pressures of the gas and the atmosphere are equalized. The atmospheric pressure is 745 mmHg. The temperature of the water and gas are identical at 26 degrees C. How many moles of H2 have been evolved?

**AP Chem**

A solution of hydrogen peroxide, H2O2, is titrated with a solution of potassium permanganate, KMnO4. It requires 51.7 mL of 0.145 M KMnO4 to titrate 20.0 g of the solution of hydrogen peroxide. What is the mass percentage of H2O2 in the solution? If you want the whole equation...

**AP Chem**

Thanks for walkin me through that one =]. It helped a lot with the other problems like that too.

**AP Chem**

A chemist added an excess of sodium sulfate to a solution of a soluble barium compound to precipitate all of the barium ion as barium sulfate, BaSO4. How many grams of barium ion are in a 458-mg sample of the barium compound if a solution of the sample gave 513 mg BaSO4 precip...

**PIGSKIN GEOGRAPHY**

WHAT KIND OF GRAINS ARE IN CEREAL BESIDES CORN, WHEAT, AND OATS?

**AP Chem**

I divided by 111.1. Our teacher likes us to use 3 digits when using atomic weight.

**AP Chem**

Oh wait, is this one like the last one I asked for? I didn't work that one out yet.

**AP Chem**

An aqueous solution contains 4.50 g of calcium chloride, CaCl2, per liter. What is the molarity of CaCl2? When calcium chloride dissolves in water, the calcium ions, Ca^+2, and chloride ions, Cl^-, in the crystal go into the solution. What is the molar concentration of each io...

**AP Chem**

A 3.50 g sample of KCl is dissolved in 10.0 mL of water. The resulting solution is then added to 60.0 mL of a 0.500 M CaCl2(aq) solution. Assuming that the volumes are additive, calculate the concentrations of each ion present in the final solution. *confused*

**AP Chem**

Yes, thank you. I was trying to do the equation like it was a carbonate that produced carbon dioxide, not as an acid.

**AP Chem**

Complete and balance each of the following molecular equations, including phase labels, if a reaction occurs. Then write the net ionic equation. If no reaction occurs, write NR after the arrow. H2CO3(aq)+Sr(OH)2(aq) -> this is what I put but I think its wrong H2CO3(aq)+Sr(O...

**Square Root Help!!! Urgent:)**

1. 4 times squareroot 10 2. 3 times squareroot 11 3. 13 4. 2 times squareroot 3

**algebra**

how would you factor 25z^2 + 16

**Math**

subtract .2b from both sides. 0.3b + 3.4 = 12.4 subtract 3.4 from both sides 0.3b = 9.0 divide both sides by 0.3 b= 30

**trig**

what is the inverse tangent of (rad3/3)?

**trig**

inverse cos (-rad2/2)=135 degrees inverse sin (-rad2/2)=-45 degrees I dont understand why cos is 135

**chem**

calculate the longest wavelength visible to the human eye

**Essay**

oh yeah i know they arent sentences. they are just ideas for the sentences. but they have to be in inverted order and i need a topic broader than giving back to the community.

**Essay**

i'm writing an inverted intro paragraph and these are the sentences i have so far. 1. ? 2. giving back to the community 3. community service 4. the youth volunteering 5. benefits of youth volunteering for commuity service can anyone think of a beginning sentence or make ch...

**phsical education**

i need a lot of help lets just say that my gym teacher is making my class take health so i have a huge asignment due on monday i need 101 ways to be healthy they can be physical, emotional, mental,social, intellectual, and spiritual Good Luck (i know i tryed) -ANNA-

**Physics**

Someone posted the question below, stating that they knew the answer to part A but needed help with part B. Well even with the answer for A, I can't figure it out! Can you take a step back from the question below to show me the steps for solving part A? I've been worki...

**7th grade**

WOULDNT THE TOTAL BE $3.60

**physiology**

as ___________increases, the two-point threshold decreases a.receptor # b.receptor density (i think its this one) c.receptor sensitivity d.receptor sensation

**physiology**

Bleaching induces conformational changes in both retinene and the associated opsin. T or F I don't understand this bleaching process

**physiology**

neurotransmitter release would be inhibited by a.stimulating repolarization of the axon terminal b.blocking Ca2+ influx in the axon terminal c.blocking repolarization of the axon terminal d.stimulating protein kinase activity I think its b, but not sure

**physiology**

what percent of blood flow to the body per minute goes to the brain ? 10, 20, 25, or 30% ?

**physiology**

the blood-brain barrier prevents hydrophobic molecules from diffusing into the brain. T or F Excitable cells are incapable of maintaining a constant resting membrane potential. T or F The membrane of resting nerve cells is more permeable to______ions than _________ions. a.sodi...

**social studies**

How do monopolies threaten the free enterprise system?

**Consumer math**

How to Compute percent of change in cost: Item:1 lb.apples price in 1970: 0.25 what is the Present price and what is the percent of change?

**geography**

Geography of Greece. How did it affect the people living in the region?

**government**

What is the newest government agency formed just earlier this week?

**Spanish**

linda--pretty princesa--princess reina--queen mi amor--my love

**spanish**

son las tres menos quince en punto.

**science**

OK,the question is what three statements that define all living things in terms of a cell? crossword puzzle! Anna

**college - visual arts**

R u doin it on a computer hi

**AP Chem**

Calculate the number of atoms in 32.0 g Br2. I keep getting 1.20 * 10^23 atoms Br2 but my book says i'm wrong.

**math**

3/5.37 = 8/14.32

**AP Chem**

but don't i have to know the formula for ethylene glycol?

**AP Chem**

Combustion of 6.38 mg of ethylene glycol gives 9.06 mg CO2 and 5.58 mg H20. The compound contains only C, H, and O. What are the mass percentages of the elements in ethylene glycol?

**English: what's the formal term for...?**

suspense?

**Math**

A book has n consecutive pages torn out (each paper in a book has two sides - each side is one page). Suppose A is the last numbered page before the torn out section and B is the first numbered page following the torn-out section. Find a formula for n in terms of A and B.

**Science**

did that help

**Science**

It would be a physical change because wjat it is made out of stays the same.

**Math**

Will a parabola intersect its directrix sometimes, always, or never?

**Math**

What is the length of the latus rectum of x^2=20y X squared equals twenty Y

**Math**

Find the equation of the parabola with directix y=3 and focus (5,7)?

**math**

10.9186

**English**

Can someone please proof read this? In A Raisin in the Sun, Lena Younger is the nurturing, ethical character who keeps the Younger family in line. First of all, Lena is a caring mother. For instance, when Walter runs away from his family because no one will listen to his liquo...

**math**

On the plant ZOG,colored coins are used formoney. Suppose 12 white, 9 red, 8 yellow, 4 blue, and 0 green can be exchanged for 2 white, 1 red, 0 yellow, 1 blue ,and 1 green. Also, suppose 1 green = N blue, 1 blue = N yellow, 1 yellow = N red, and 1 red = N white coins. What is ...

**Chemistry Honors**

well put

**Language Arts**

comprehend, curled up, fear

**math**

Given an infinte geometric series, with S=14 and the first term 9, find the ratio between terms.

**math**

1) 13 and -13 2) 5 and -5 I think I could be wrong

**science**

you need to change mL to grams and use conversions

**Economics**

This is what I came up with from my chapter reading, but this subject is confusing me. There is not a direct relationship between Gross Domestic Product and the economic well being. There may be a correlation in some instances, however high Gross Domestic Product does not nece...

**Economics**

What is the relationship between the level of Gross Domestic Product and economic well-being. What factors of well-being are missing from the Gross Domestic Product? Is there a point where the Gross Domestic Product could increase to such a high level that economic well-being ...

**Math- Algebra**

The function C(x)=4x+850 closely approximates the cost of daily production run of x picture frames. The number of picture frames produced is represented by the function x(t)=90t, where t is the time in hours since the beginning of the production run. now here's where I nee...

**English**

Is this a good topic sentence for a paragraph? In A Raisin in the Sun, Lena Younger is the nurturing, morale character who keeps the Younger family in line and earns your respect in the story.

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