Wednesday

April 23, 2014

April 23, 2014

Total # Posts: 1,243

**chem**

i don't know how to solve this. looked through all my note but i'm not sure what kind of formula i am to use or if i even need one! please help me to understand this: "calculate the work need to make room for the products in the combustion of S8(s) to SO2(g) at 1 ...

**chem**

please help me? :) topic: standard enthalpies of formation "Calculate ΔHf° of octane, C8H18(l), given the entalpy of combustion of octane to CO2(g) and H2O(l) is -5471kJ/mol. The standard enthalpies of formation ofCO2 and H2O are given: CO2(g)ΔHf°=-393.5...

**chem**

oh! i get it now. q mug + q coffee = 0 after typing many numbers on my calculator i got the final temperature to equal 84.65 degrees C. I'm sure this is right, thank you very much :)

**chem**

topic: thermochemistry i'm not really sure how to go about his question. i'm not sure with formula to use. (perhaps Cspht= q/(m x deltaT)?)can you please help me step by step or give me a hint and i'll post my answer, pretty please? "250g of hot coffee at 95 d...

**chem- acids and bases**

you're the best, thank you so much!

**chem- acids and bases**

correction for typo: "- how do i find the concentration of HNO2, is it 0.20M? " i meant NO2^- instead of HNO2

**chem- acids and bases**

sorry to take up your time again, acids and bases just really confuse me, i'd really appreciate your help again. "What is the pH at the end point for the titration of 0.20M HNO2 by 0.20M NaOH? Ka nitrous acid= 4.5 x 10^-4." this is what i do know: - end point, so...

**chem**

thanks again!

**chem**

what will the pH at the end point of 0.0812M Ba(OH)2 be when titrated with HCl? a) 9.0 b) 8.0 c) 12.2 d) 7.0 e) 6.0 for this question, can i just assume the pH will be 7 since it's s titration with a strong base and a strong acid? (or do i have to do calculations?) I'm...

**chem**

oh! i get it now, thank you very much =)

**chem**

what is the pH change after the addition of 10mL of 1.0M sodium hydroxide to 90mL of a 1.0M NH3/1.0M NH4^+ buffer? Kb ammonia= 1.8 x 10^-5 i found the pH for the original buffer to be 9.255, but i'm not sure how to go about the rest of the question, please, someone help me.

**math**

Mr. Forrester has a swimming pool that measures 3 1/3 yards by 8 yards. If the deck around the pool is 2 2/3 yards wide, what is the outside perimeter of the deck?

**College Physics**

nvm I got this one. but thank you! :]

**College Physics**

Two identical conducting spheres each having a radius of 0.500 cm are connected by a light 1.90 m long conducting wire. A charge of 65.0 µC is placed on one of the conductors. Assume the surface distribution of charge on each sphere is uniform. Determine the tension in t...

**English**

In the story "Oedipus" by Sophocles, do you think there was any way that Oedipus could have avoided his fate? How? In what way?

**Chemistry**

HELP!!! An unknown metal having a mass of 14.00g is dropped into 11.00mL of water at 20.0 degrees Celcius. The starting temperature of the chunk of metal is 100.0C. The final temperature of the water and metal is 32.5C. What is the specific heat of the metal?

**english**

Please help me identify the adjectives and adverbs in this: My experiences with credit and credit card started at age 18. I had several credit cards by the time I was in my mid-twenties. I did not realize that I over extended myself until I lost my job. I had to figure out how...

**math**

At kenneht's school, tickets for a concert were sold at the rate of 40 per half-hour. how many tickets will be sold in 7 hours?

**Physics**

A student on a piano stool rotates freely with an angular speed of 2.95 rad/s . The student holds a 1.35 kg mass in each outstretched arm, 0.739 m from the axis of rotation. The combined moment of inertia of the student and the stool, ignoring the two masses, is 5.13 kg m^2, a...

**algebra**

a roof rises 1.3 feet vertically and 13.1 feet horizontally. wgat is the grade of the roof?

**Health Care**

Why is it when ever someone ask for help someone thinks they are cheating? If I wanted to cheat I would let soeone else do the work. All I want is a formula or example to follow so I can figure this out for myself!!!!!

**Access**

A database has two tables named Products and Orders. The tables are joined by a column called ProductID. You have created a query named uery1, which combines the data from the tables. If the Products table is deleted, what will happen when users run Query1? A. Only the data of...

**BUSINESS LAW**

In the video game Corporate Cowboy, your task is to investigate complaints of wrongdoing on the part of corporate directors and officers, decide whether there is a violation of the law, and deal with the wrongdoers accordingly. Jane, a shareholder of Goodly Corporation, allege...

**english**

rosaq was nervous around the large dog whose moods were easily changable

**english**

recommendation

**statistics**

2.Children’s heights are normally distributed with a mean of 100 cm and a standard deviation of 6 cm. What proportion of children’s heights is smaller than 94?

**statistics**

2. Children’s heights are normally distributed with a mean of 100 cm and a standard deviation of 6 cm. What proportion of children’s heights is smaller than 94?

**science**

i need help with chapter 5.1 for a chemstry review.

**clara baton hs**

answer for 182.25+ y squared + 8y

**Algebra 2**

I am completely lost trying to solve this problem. I could really use some help and explanation. x/x+1 + 5/x = 1/x^2+x also how do you write (x-5)(x-5) would it be x^2-5

**english homework**

maybe she has seen the message I'm definitely DEAD What can I do? What can you do? I will be eternally grateful!

**deleting**

can you definitely suppress the post (message)or at least suppress the "my incompetent teacher can't really help"? I forgot that she looks on the net. What can you do for me please, she will tell to my headteacher; So she will take an official warning and my pare...

**Personal Finance**

From the throne room in your base station on Alpha Centauri-in the video game Galactic Empire-you dispatch your loyal, obedient minions to use their diligence and skill to loot the universe on your behalf and return with the treasure for its accounting and their compensation. ...

**calculus**

Please help me solve this equation. log[2](3)+log[2](x)=log[2](5)+log[2](x-2) 1. Solve equation by setting up algebraically. 2. Use appropriate properties of Logarithm to reduce the number of logarithmic terms to only one. 3. Solve logarithmic equation.

**Finance**

An investor purchases a 10-year U.S. government bond for $800. The bond's coupon rate is 10 percent and,? at time of purchase, it still had five years remaining until maturity. If the investor holds the bond until it matures and collects the $1,000 par value from the Treas...

**math**

how do I write the slope of a line containing points (-2,0) (-2,8)

**math**

a ceiling in a new house rises 8 feet over a distance of 29 feet. Find the slope of this ceiling. rouns=d to two decimal places

**algebra **

A ceiling in a new home rises 8 feet over a distance of 29 feet. Find the slope of this ceiling. Round to two decimal places.

**fin 200**

As the time period until receipt increases, the present value of an amount at a fixed interest rate A. decreases. B. increases. C. remains the same. D. Not enough information to tell.

**Cal**

The demand for Sportsman 5 X 7 tents is given by the following function where p is measured in dollars and x is measured in units of a thousand. (Round your answers to three decimal places.) p = f(x) = −0.1x^2 − x + 40 (a) Find the average rate of change in the uni...

**Finance**

Jud Wheeler signed a contract to purchase 10 acres of land in Idaho from the Krauses. If Jud offered the Krauses considerably less for their property than its possible market value and the Krauses accepted the offer, could they avoid the contract on later learning that they mi...

**com/170**

• Write several sentences describing a recent interaction with a friend or family member about personal finance or credit cards. This interaction may be imagined or real. • Use at least five different pronouns, adverbs, and adjectives in your sentences. • Identi...

**Finance**

Is it 12.2? Thanks alot!

**Finance**

Could someone show me how to calculate average tax rate. What would be the average tax rate for a person who paid taxes of $4,864.14 on a taxable income of $39,870? Can someone help please?

**Finance**

Compute taxable income. gross salary 46,660 interest earnings 225.00 dividend income 80.00 one personal exemption 3,400 itemized deductions 7,820 adjustments to income 1,150 What amount would be reported as taxable income?

**Finance**

Need help with computing taxable income. Can someone explain to me how this is done. Gross salary, 46,660 Interest earnings 225 Dividend Income 80

**com/170**

• Write several sentences describing a recent interaction with a friend or family member about personal finance or credit cards. This interaction may be imagined or real. • Use at least five different pronouns, adverbs, and adjectives in your sentences. • Identi...

**composition**

I need help, do i have at least five adverbs and 5 adjectives, 3 comparisons and three superlatives? Also do i have all adverbs and adjectives labeled? Curtis, my children’s father and I are in the process of finding us a larger (adj.), updated (adj.) apartment better (ad...

**composition**

Do I have five different pronouns, adjectives, and adverbs? Curtis, my children’s father and I are in the process of moving to a larger (adj.) apartment. Our personal (adj.) finances have been the topic of conversation as of late. There is concern; whether or not; his inc...

**Personal Finance**

NEED HELP IMMEDIATELY, HAVE UNTIL 10P.M. CENTRAL TO HAVE ANSWERS?? 1.Determining the Future Value of Education. Jenny Franklin estimates that as a result of completing her master’s degree, she will earn $6,000 a year more for the next 40 years. a.What would be the total a...

**BUSINESS LAW**

Question 1: Which side of this debate is more ethical or supportive? Copyright infringement, the tortuous offense, is never OK on my behalf. But the copyright law recognizes exceptions to the generic standard that a copyright holder controls. The Fair Use provisions;with regar...

**BUSINESS LAW**

At issue in the twenty-first century is the trade-off between the necessity of writers, musicians, artists, and movie studios to profit from their work and the free flow of ideas for the public benefit. Movie (and music) industry participants claim that encryption programs are...

**chem**

Under what conditions does water boil at exactly 100 degrees Celsius?

**algebra**

Please help me simplify this function? f(x)=-4(x-3)^3(x+1)^2

**English**

Which word is the correct choice? I was in a real/really hurry and forgot some of the ingredients?

**dr bob**

how much heat would be required to warm Earths ocean by 1.0 degrees C assuming that the volume is 137*10^7 km ^3 and the density of sea water is 1.03 g/cm 3. also assume that the heat capacity of seawater is the same as that of water

**math**

I just need a little help I got this far and got stuck again. 0.10 mm=0.010cm V= (4/3) (0.010cm) ^3= 1.3333x10^-06 M= (1.3333*10^-06cm^3)*(4.0*10^14g/cm ^3) =

**math**

how much heat would be required to warm Earths ocean by 1.0 degrees C assuming that the volume is 137*10^7 km ^3 and the density of sea water is 1.03 g/cm 3. also assume that the heat capacity of seawater is the same as that of water

**math**

calculate the mass in kilograms of a small piece of a neutron star the size of a spherical pebble with a radius of 0.10 mm. 0.10 mm=0.010cm V=(4/3)(0.010cm)^3= M= ( i got this far now I am lost please help

**chem/math**

hang on I dont know why it keeps doing that. how much heat would be required to warm Earths ocean by 1.0 degrees C assuming that the volume is 137*10^7 km ^3 and the density of sea water is 1.03 g/cm 3. also assume that the heat capacity of seawater is the same as that of water

**chem/math**

how much heat would be required to warm Earth¡¯s oceans by 1.0 ¡ãC? Assume that the volume of Earth¡¯s oceans is 137 x ¡¼10¡½^7 ¡¼km¡½^3 and that the density of sea water is 1.03 g/cm3. Also...

**chem/math**

How much heat would be required to warm Earth¡¯s oceans by 1.0 ¡ãC? Assume that the volume of Earth¡¯s oceans is 137 x ¡¼10¡½^7 ¡¼km¡½^3 and that the density of sea water is 1.03 g/cm3. Also...

**chem**

A NASA satellite showed that in 2003 the ozone hole was much larger than it was in 2002. The 2003 hole measured 1.04 x ¡¼10¡½^7 ¡¼mi¡½^2 in diameter, while the diameter of the 2002 hole was 6.9 x ¡¼10¡&frac...

**chem**

Global warming refers to the rise in average global temperature due to the increased concentration of certain gases, called greenhouse gases, in our atmosphere. Earth¡¯s oceans, because of their high heat capacity, can absorb heat and therefore act to slow down glob...

**Astronomy**

According to Newton's second law, when the same force acts on two bodies, the body with the larger mass will have the ________ acceleration.

**Math**

sin2x-cosx (0<=x<=180)

**Biology (immune system)**

How does the immune system help maintain homeostasis? Help me please :(

**biology /cell analogy**

Can you help me find an everyday object that has a similar function as : 1-Golgi Bodies an example 2-Lysosome an example kitchen garberator 3- peroximes example a gym 4-Vesicules/vacuoles an example water bottle 5-Cytoskeleton an example 6-Microvilli an example 7- Cilia an ex...

**english**

thanks

**english**

Hello! My name's Marie,I'm 16 I live in Paris and I'm bad in english,(so sorry for my neglish)I must do a homework and I would like that you correct my mistakes, please... It's your language (mercy) :) I used pictures to tell the story of a slave One June day i...

**Chemistry (acids and bases)**

Calculate pH, pOH, [H+], [OH-], and Ka for a 0.026 M solution of HI (a strong acid). Please help me :(

**Math **

Out of a group of (50,000) births, the number of people, f(x), surviving to age (x) is modeled by the function f(x)=5000 square root 100-x. To what age will (20,000) people in the group survive?

**English**

so it's c?

**English**

What is the best way to revise this sentence " Make your decisions about what features are important to you." A. Make decisions about what features are important to you. C. Decide what features are important to you.

**English**

Which transition phrase should be added to the beginning of this sentence " Ask the salesperson to explain the store's return and exhange policy" A. Before you leave the store, B. After you finish, is it A?

**English**

Oh isee what you mean!

**English**

I believe D

**English**

yes they are "it" sorry I put "it's" by accident

**English**

What is the best way to revise this sentence? Sometimes a purchase doesn't live up to all the things it's advertising says about it. A. Sometimes a purchase doesn't live up to what it says. B. Somestimes a purchase doesn't live up to it's advertising. C. So...

**Math**

What do you do to the first inequality to get the second inequality?

**Math**

x + 8 < 11; x < 3 help!!

**Chemistry**

How would I go about doing this problem? 146 mL of wet H2 gas is collected over water at 29.0 degrees C and room pressure of 750 torr. Give the volume of the dry H2 gas collected at STP, give the mass of the dry H2 collected, and give the volume of the dry H2 at room condition...

**MATH**

CAN SOMEONE HELP ME FIND THE GCF OF THIS POLYNOMIAL? 6x^4+18x^2=

**Chemistry - double replacement +balancing equation**

CuSO4 + Na2CO3 <-> I dont know how to do this :( somebody help me :( i think its CuSO4 + Na2CO3 <-> Cu3(CO3)2 + Na2SO4 I have no idea how to balance this. Heelllppp

**math**

thnx so much!

**math**

Help! Urgemt Constant term of (x-(2/x^2))^9 is?? I expanded it and ended up with (1)^9 and (-2)^9. Im stuck as to wat to do from here. should i add? or... what??

**Chemistry- Decomposition**

What is the decomposition of AgC2H3O2? AgC2H3O2->?

**Confidentiality in Allied Health Essay**

Can you help me please I have two weeks be fore the alound time for this I do not understand what to do...

**Biology**

Why doesn't blood clot in your blood?

**Managerial Communications**

What are some manager audience characteristics that I should consider while presenting quarterly sales information?

**Chemistry**

What volume of a 0.176 M Na2S solution contains 1.01 g of Na+ ions? Please show work, I appreciate your help

**english **

The mortals are the pygmalion and Aphrodite in the myth of pygmalion is that right? help me please.

**english**

Ok the answer will be pigmalion is the only mortal because Aphrodite is the goddess can you help me please?

**english**

Ok the answer will be pigmalion is the only mortal because Aphrodite is the goddess can you help me please?

**english**

So the only mortal was Galeatea right?

**english**

In the story of pygmalion and galatea what mortals are involved? Can you explain what they mean . ?

**physics**

a 75.0 kilogram skier is at the top of a hill that is thirty degrees above the horizontal. the skier starts form and then travels down the hill which is 100 meters long. the skier at the bottom of the hill instantaneously then travels on flat horizontal snow. the coeefficient ...

**Music The Classical Era**

The______ is an essential characteristic of the sonata form.

**Physics**

From the edge of a 25 m building, a student threw s rock up 35 m/s and it landed on the ground. How long was the rock in the air?

**College Chemistry 100**

The topic is about acids, bases, and salts. The two equations are given: H20 + HCL -> H30 + CL; H20 + HC2H3O2 <-> H30 + C2H3O2 The question is: A solution with a volume of one liter contains 0.45 mole HC2H3O2 and 0.48 mole C2H3O2 ion. (Ka for HC2H302 is 1.82 x 10-5) W...

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