# Posts by ben

Total # Posts: 1,005

**Chemistry College (Need to know!)**

Am I Correct in assuming this? dH of solution = -dH of lattice enthalpy + dH of hydration E.g: dHsolution NaCl = -dHLE NaCl(s) + dHhyd Na+(g) + dHhyd Cl-(g) Units as kJmol-1

**Chemistry College**

Am I Correct in assuming this? dH of solution = -dH of lattice enthalpy + dH of hydration E.g: ÄHsolution NaCl = -ÄHLE NaCl(s) + ÄHhyd Na+(g) + ÄHhyd Cl-(g) Units as kJmol-1

**Chemistry College**

Well to be honest I wasn't there for the teaching of this in my class due to University interviews. I was just wondering how you actually work through them as other websites i have been on have all been in too much (universty standard) detail. Thank you for the fast response!

**Chemistry College**

Is there a simple formula for the Enthalpy of solution and/or hydration?

**english**

hi what does this quote mean I am responsible. Although I may not be able to prevent the worst from happening, I am responsible for my attitude toward the inevitable misfortunes that darken life. Bad things do happen; how I respond to them defines my character and the quality ...

**8th grade**

its not beef flat retard.

**us**

hi i have to write a paper stating that malcolm x was a better leader than martin luther king jr. I need a lot of help

**history**

what other civil rights leaders could i really use

**history**

hi. I need to write a 5 page paper describing how Martin Luther King's leadership was not needed in the civil rights movement. I need a lot of help and information. Thank you soo soo much.

**chemistry**

i don't get part three at all please help

**chemistry**

suppose that you could decompose 0.250 mole of Ag2s into its elements a.How many moles of silver would you have? how many moles of sulfur would you have? b. how many moles of ag2s are there in 38.8 g of AG2S? how many moles of silver and sulfur would be produced from this ...

**chemistry**

can u show me how to set it up because i don't get it at all

**English**

I'm confused. In the Great Gatsby, did Myrtle get killed in Chapter 8 or was that a flashback, or something that Nick just learned of at that time? Thank you

**science**

look

**Historical Fiction**

My teacher wants me to write a historical fiction story. We need a source from the internet with ".edu" at the end of the address. My paper is going to be on World War II, so could you find a website on World War II with ".edu" at the end?

**Chemistry**

2. Calculate the volume for the following object If you know that the object has a mass of 24 grams and the density is 12 g/ml. I tried to get rid of the 24 by multiplying it on both sides, and dividing on both sides, but neither worked. What will then? Thanks!

**Jiskha in General**

Are some of the people on this site teachers? How do they have time to answer our questions? Don't they have to grade papers and such? I'm just curious and grateful that some people are willing to always be on here.

**chemistry**

We have 1 mol of N2 gas that is heated at constant pressure from 300K to 5770K on the surface of the sun. i) Find H and S given that P for nitrogen is (25.7 + 0.0130T) J/mol-K. ii) Now, redo your calculation assuming that the second T-dependent term in the P ...

**4th grade**

What is the correct way to write each of these Titles correctly? 1.highlights 2.child of fire 3.the downtown news 4.number the stars

**MIST**

SIN (X+Y) SIN (X-Y) = SIN ^2X - COS ^2Y

**History**

Hi. I need to find a lot of information on World War II. My teacher wants me to use only websites that have .edu at the end. Could you help me find a website?

**math**

sketch the graph of y^2=(1/4)x

**physical science!!!!!!!!**

1. Alex pulls on the handle of a claw hammer with a force of 15 N. If the hammer has a mechanical advantage of 5.2, how much force is exerted on a nail in the claw? 2. While rowing in a race, John pulls the handle of an oar 0.08 m on each stroke. If the oar has a mechanical ...

**physical science**

Alex pulls on the handle of a claw hammer with a force of 15 N. If the hammer has a mechanical advantage of 5.2, how much force is exerted on a nail in the claw?

**history**

did native american colonize or immigrate?

**calculus**

It is known that if m <= f(x) <= M for a <= x <= b, then the following property of integrals is true. m(b-a) <= int_a^b f(x)dx <= M(b-a) Use this property to estimate the value of the given integral. ? <= int_0^3 3/(1+x^2)dx 2 <= ? solve for the ?

**calculus**

given: f(x) = 2-1/4 x Evaluate the Riemann sum for 2 ≤ x ≤ 4 , with six subintervals, taking the sample points to be left endpoints.

**Chemistry**

How can you separate compounds?

**us history debate**

i really don't know what to do. PLease please help me

**us history debate**

Hi. I am doing a debate on wheter united states imperialism in the late 1800s to early 1900s was justified. I am on the side that states that imperialism was justified. I need help coming up with points to put in my rebuttal. i already have my opening statemnt done but I don&#...

**Algebra**

Give the domain for each of the following: 5+2y/6 5-r/r 2y+1/y+5 I don't get these so yea thank you!

**Recent History**

I don't understand what the big deal was about Y2K. Why would the world stop just because the computers would...I mean we existed all of these years without computers. It would make life more difficult certainly, but it wouldn't entirely end life as we know it.

**Math**

How do you compute 10 (to the -4)(as the exponent)

**philosophy**

Why do the Skeptics treat lack of belief as the goal of life? what purposes does that serve for them?

**calculus**

Find an equation of the tangent line to the curve at the point (0, 1). y = (1 + 3x)20 i got y' = 60(3x+1)^19 what do i do next?

**calculus**

differentiate y=x sin((4)/x)

**eng**

how would i deal with this? Each generation has some thing valuable to offer This generation information dispersal, my generation-heavy metal my parents--they paved the way

**English**

teacher

**English**

no kidding that's the way they want it for the outline. They also want us to show our stylistic devices in the outline. Just a weird way of learning it.

**eng**

Outline: 4) Also the Government will not incur the cost of defaulted student loans. a. High debt loads are not being paid (Stat) 800 million overdue on defaulted loans b. Relief programs are faulty (Fact) Debt management programs require loans to be in good standing (not in ...

**eng**

hows my outline look? Outline: 1)Post secondary education is unaffordable A)Poor students can’t afford tuition (Stat) tuition has increased by Fifty-percent B) The Government has implemented grants, scholarships and student loans to help. Thesis: I’m going to write ...

**calculus**

Show that the curve given below has no tangent line with slope m1, where: y = 4 x^3 + 8 x - 6 m1 = 7

**calculus**

find the points on the curve y=2x^3+3x^2-12x+1 where tangent is horizontal.

**chemistry**

write the total and net ionic equation for calcium hydroxide(aq) -> acetic acid(aq)

**chemistry**

How many total moles of ions are released when each of the following samples dissolves completely in water? 30.2g of Ba(OH)2 8H2O

**Chemistry**

is KAl(SO4)2 12H2O hygroscopic, deliquescent, or efflorescent?

**english**

Ok, having some troubles the question is why does soccer inspire so much passion around the world probably because it provides a unifying identity. Gives the poor something to aspire to, provides role models, and unities them for a common purpose. do i have to much ?

**Calculus derivatives**

f(a) = a + √a (a) Find the derivative of the function using the definition of derivative.

**chemistry**

calculate the number of Mg2+ ions in each mL of 0.162M(molarity) magnesium bromide

**evaluate my english pls**

Analysis of “A Hanging” George Orwell’s “A Hanging” shows the inhumanity of capital punishment. He uses a narration to describe the sequence of events involved in the hanging of an Indian prisoner. By using vivid images the horrors are shown. Overall ...

**evaluate my english pls**

i copied and paste it..but doesnt seem to work

**evaluate my english pls**

Analysis of “A Hanging” George Orwell’s “A Hanging” shows the inhumanity of capital punishment. He uses a narration to describe the sequence of events involved in the hanging of an Indian prisoner. By using vivid images the horrors are shown. Overall ...

**english**

thanks ms. sue im finally getting that stuff... its been 20 yrs since i did grammar..

**english**

one says each boy so i assume its singular...so the very has to be his 2-I I are going to the store jane and i are going to the store not sure what is singular and plural and subject , object, and all that stuff.

**english**

1. their 2 me 3 we 4 me and bob 5 who

**english**

hey can u help me with punctuations are these correct> having problems with pronoun agreement. My answer are the end of each sentence. 1. Each of the boys washed (their his) dishes. His 2. Jane and (me I) are going to the store, Mom! Me 3. (We Us) and our friends signed ...

**CHemistry**

73.9%

**eng 12**

I got to analyze suzukis history at our peril. How should i present my analysis? suppose to tell why its expository? then provide examples. Should i state why in the first paragraph why its expoisitory? ie he talks about how humans need to protect the environment or it will ...

**help wit my analysis**

oh, we get 3 points for telling why its expository 3 for three examples of support 1 title 1 author 2 for mainpoint

**help wit my analysis**

In “What is poverty” Jo Goodwin Parker uses an expository essay to define the realities that she faces. She believes poverty can’t be described by the lack of food, clothing, shelter, housing or water. Nor does she think it’s a statistical measure. She ...

**Psychology**

psychological are mental and phsiological are physical maslow just said we strive for greater satisfaction. Once primary needs are met we strive to full our inner desires ? so for example. If your poor then your basic needs are not met so you cant pursue your inner desires ...

**math**

I would pick Box B because you have a 60% chance of picking a red marble in Box A and you have a 66.6% chance of picking a red marble in Box B.

**Statistics**

One-fifth of the population is left-handed. A random sample of 20 people is selected. a) What is the probability that no more than 6 of the next 20 people are left-handed. b) What is the probability that at least 4 of the next 20 people are left-handed.

**Math**

How do I write a word problem that matches this expression:10-(2x4)?

**english 12**

thanks, humans are causing killing all the animals, polluting the plants, pollution, ozone, basically messing up the biodiversity of the species...

**english 12**

i think u got it wrong we are suppose to id the thesis and then tell why its a cause effect essay don't need any position

**english 12**

what is the thesis suppose to do analysis of this essay to show its cause effect. How do i start it ? June 15, 2001 - More than 13,000 years ago when humans first set foot in the Americas, there were no roads crisscrossing the landscape, no sprawling cities, no vast fields of ...

**chemistry**

The closest would be Krypton, not Radon

**physics**

The impulse equals that, and then you divide the impulse by change in time (.292 s) in order to obtain your answer, the average force exerted on the ball.

**college physics**

0.81

**chemistry**

what products would be obtained if chromium oxide was mixed with sulpheric acid

**science ()**

thanks guys

**math riddle ALGEBRA WITH PIZZAZZ**

Rolling in the isles

**science**

Two workers pull horizontally on a heavy box, but one pulls twice as hard as the other. The larger pull is directed at 25.0 degrees west of north, and the resultant of these two pulls is 350.0 N directly northward. Use vector components to find the magnitude of each of these ...

**MATH**

x/6=84, x=504 x/7=?, 504/7=72 the answer is 72

**Calculus**

Find the derivative of Integral from -5 to sin(x) of cos(t^3)+t

**Social Studies**

Can you give me an example of a human resource? I know what natural resources and capital resources are. Would a human resource be an occupation like farmer or police officer? We're supposed to list examples.

**english**

hi can someone please pleas help me. All I need is a thesis for this question that I am writing an essay for. Analyze the impact of the Atlantic trade routes established in the mid 1600's on economic development in the British North American Colonies.

**education**

I just failed the 10th grade by 1 credit. And I feel like I could do much better in the 11th and 12 grade. Is it possible for me to still go to college?

**Physics**

If the distance between massive objects doubles, what happens to the force between them?

**math**

You should learn to spell. Equal does not equal equil.

**math**

yes it is possible, if newtons law of gravity takes place, and you take the squre root of three. 2+2 does infact equil five. P.s. I KNOW THIS RESPONDING TO MY OWN QUESTION!!! THIS IS BECAUSE I NEED SOMEONE TO ANWSER THIS!!! MY REPORT DUE IN FIVE MINUTES!!! HELP ME PLEASE!!!

**math**

I heard people say that 2+2 could equil 5. Is this posible?

**band**

In the piece Alamo March what typically happens on a trio?

**statistics**

A. 1/12 b. 1/24 c. 1/12 d. 1/4 I THINK these answers are correct, if this is for a major grade, ask somebody and compare my answers to theirs.

**Science**

I have a report due for science and i have to learn a ton of information about the grasslands biome. What website has the most infromation about that subject?

**Math**

What might you have if you don't feel well?

**music**

hi i need some help wiv me music home worh respond asap time of gag 10:10

**Racial and Ethnic Groups**

I know how to research I was asking your opinion. Oh Well Thank you anyway

**Racial and Ethnic Groups**

Consider racial imbalances in education, the econmy, family life, housing, criminal justice, health care and politics. of the these societal challenges facing moder african americans, which do you think are most difficult to overcome, and why?

**Algebra 2**

Actually, I figured it out..... Because of what it says in the directions: Simplify Each Expression. Rationalize all denominators. Assume that all variables are positive, I have to rationalize all denominators, which means you can't have a radical in the denominator so you...

**Algebra 2**

Simplify Each Expression. Rationalize all denominators. Assume that all variables are positive. 3 times the square root of 11x^3y (the three is an exponet) over -2 times the square root of 12x^4y (the 4 is an exponet)

**Media and Culture**

summarize specialization and ownership patterns inthe newspaper and magazine industries in a 250- to 300 word reponse. Explain the positive and negative impacts of thes patterns onequitable access to information. Thank you.

**Immigration**

200-300 word summary that answers all of the following questins: Should United States government policy favor certainkinds of immigrants? Should citizenship preference be givento the neediest applicants? The most talented? the most Oppressed? the Richest? Should applications ...

**Math**

One number is 9 more than another number. If the product of the two numbers is -20, find both numbers.

**Math**

One positive number is 8 more than another. The sum of their squares is 104. Find both numbers.

**Math**

Simplify the following expression. x+3 1 xsq2-x-6 ____ + _____ +________ x-3 x+3 xsq2-9

**Economics/Stats**

I have data on unemployment over the past 15 years for three different groups. I would like to show that there is more volatility in several of the groups than there is in the other. What tests should I run?

**financial accounting**

the long-term note payable bears an interest of 12% per year. the unadjusted interest expense account equals the amount paid for the first 11 months of the 2008 fiscal year.(3,300). The 300 accrued interest for april has not yet been paid or recorded.Note: that the company is ...

**accounting**

Andy Wright, D.D.S., opened a dental practice on January 1, 2008. During the first month of operations the following transactions occurred. Performed services for patients who had dental plan insurance. At January 31, $875 of such services was earned but not yet recorded. ...