Answers by visitors named: Josh

I add up the atomic masses and get the theoretical yield, it's finding the limiting reactant that is getting to me.

What I mean to say is I add up the atomic masses of CuSO4 + 4 NH3 and get the theoretical yield of 176.24. Or am I finding it wrong?

Ok. For the theoretical yield I added up the atomic masses for CuSO4 + 4 NH3. Cu (12.01) + S(32.07) + O4(64.00) + (NH3(17.04) * 4 = 68.16) = 176.24. Am I finding the theoretical yield the wrong way?

Ok, I will. Also, could someone tell me how to find the theoretical yield, since I'm apparently doing it wrong for some reason.

Uh, christina, you just told me how to find the limiting reactant, not the theoretical yield.

Ok, well, I have 1 mole of CuSO4 and 4 moles of NH3, correct?

So I have 10/159.62 = 0.062 moles, and 30/17.034 = 1.761 moles?

And the limiting reactant is CuSO4?

So 0.0626(4 / 1) = 0.2504 mole NH3 and 1.76(1 / 4) = 0.44 mole of CuSO4?

And the limiting reactant is CuSO4 since I have enough NH3?

0.0626(1 / 1) = 0.0626, then 0.0626(1 / 227.78) = 0.00027 is the theoretical yield? (227.78 is the molec weight?)

Thanks christina, for all your help. Also, in case you check, 12.6 / 14.26 = 88%.

Thank you very much. I have tried it, and wanted to know if others had gotten the same results.

I have another experiment that I am not clear about the results. Any help? Put water and manganese dioxide powder in test tube, see what happens. Then put sand in the mixture. Results? Then,put liver in it. What happens? Thanks for helping.

you couldn't show all the working could you? its just that i don't understand how to do them, and can't do them thanks

well, the equations make sense and I see no other way of doing so thank you so very much for taking the time to helping me with this math Problem.

thanls for the correction :)

hmmm, that's weird; I'll tell my teacher about it on Monday because, to me, it sort of makes things confusing, since one would ususally figure you can't exactly have only fractions of a coin... thanks for the info!

Bosch

there are no parentheses in the problem its excatly what you wrote.

The backbone of the DNA strand is made from alternating phosphate and sugar residues.The sugar in DNA is 2-deoxyribose, which is a pentose (five-carbon) sugar. The sugars are joined together by phosphate groups that form phosphodiester bonds between the third and fifth carbon atoms of adjacent sugar rings.The DNA double helix is stabilized by hydrogen bonds between the bases attached to the two strands. The four bases found in DNA are adenine (abbreviated A), cytosine (C), guanine (G) and thymine (T). These four bases are attached to the sugar/phosphate to form the complete nucleotide.

So the area would be 4x^2 ? and the area of a circle is pi * x^2 So would the area be (4-pi) x^2?

Areas I was looking at that may need some corrections: on or onto hand-written, NS list or hand-written NS list (with , or without ,) printout or print-out (with – or without -) Once all of the laundry was checked in, the check-in report was printed. The same procedure from Friday, July 4, 2008 with the check-in report and was followed; however, highlighting was left until after the last laundry check. The same procedure from Friday, July 4, 2008 with the last laundry check was followed, except for the highlighting portion.

Sorry... double post!

Swak you guys :(

Your in FLVS arent you? lol

thanks drbob

I don't mean through psychic forces..... umm....... let me rephrase : How would one go about generating a ball of electrical energy?

Hey Bob. How exactly would that apparatus work? I'm assuming it runs on a cercuit, so the electricity would pass through the ionized gas in a visible form??? You also mention low pressure. This would be important because the gass would need to move. And since a current is being passed throuhg ( ??? ) the particles would collide. So if the pressure were high it would explode?

Does anyone know some of the physics behind this or is it too advanced?

Hi Ms. Sue, I am not a frequenter of Jiskha, and not that familiar with how it works. So please bear with me. Having said that, thanks for the input.

Awesome you guys.

As someone has already stated, this energy would probably be plasma energy, not electricity.

Hey SraJMcGin, Haha, yes. It certainly does raise some questions! D:

Add 9+5 first then Subtract 2 minus 4 and once you get both of those answers subtract them (9+5)-(2-4) 14 - 2 =12

is it 2ln 2?

o alright thank you drwls

Sorry, I typed wrong. The equation is (3x^4-2x^3+7x)/x^4+14x-2

dont get it

how did you get that. not rudely.

I'm in FLVS also (SUCKSSSSSSSSS). took me an hr to find it.FINALLY@@@@@@@@

Yeah,I've been wanting to ask that too.

what will q be for both questions

How do you do that

I got -2.84E14 plugged it in and got the wrong answer

i re posted the question the way it is reading from my homework page. thanks for your help.

it got cut off...here's the rest: (i) 2 to 5 µm ? µm2 (ii) 2 to 3 µm ? µm2 (iii) 2 to 2.1 µm ? µm2 Thank you

nevermind i got it

is this what you are saying......... (t-5)/(3-t)..i need to list the numbers for which the rational expression is undefined.

For the removal of indians could I talk about the Trail of Tears and Blackhawk? Anything else? Slaves: Gradual emancipation, abolition, Louisiana Purchase Anything else? Any ideas for the Texans and Mexicans?

The southeastern Indians went to the west Texas is a western state now. Was it Mexico that owned texas before. Are my examples correct for me to use that I had listed before. I'm still loss. Sorry It takes me a while to catch on to history

We don't have a textbook. We never got one when we started school. Can you please tell me Who owned Texas before it became an independent nation? I tryed searching for an answer but did not come up with anything. I appreciate your help and will continue knit picking this question of my own. Thank you for your help

Should I take out the first part Jacksonian era was known for the success of expanded suffrage.

I'm confused.... so in simplier terms what should I be saying? I don't get it?

I really don't understand what you mean. I thought that one of Jackson's principles was expanded suffrage which allowed all white men to vote. I honestly don't get what you mean please help.

Thank you. I get it now.

The purpose of a persuasive essay is not to prove anything. That might be where you're going wrong. Very few qualitative topics can be proven. The objective of your essay is to "persuade" readers towards your line of thinking. You provide a persuasive argument for your topic. Also, try to simply your topic. A persuasive essay should be no more than 3-5 pages even at the college level. After that length you lose your readers' interest and they often forget what you were trying to say. Just some thoughts.

Think about each character's perspective and how they relate to the other characters in the book. It's been awhile since i read things fall apart, but think about how Janie's journey relates to Okonkwo's. How are their families alike? How are their hardships alike? Make a list, don't edit yourself, just brainstorm. Then try to think of a really strong similarity that has lots of textual support from each book.

*in the original equation it was supposed to be +6x-13 not =6x-13

thank you!!

I'm so sorry it's suppose to be 1/8

Thank you the site was very helpful.

UH OH, Im getting this in grade 9 acedemic,

THIS WEBSITE IS SO SLOW. NO ONE EVER ANSWERS.

Oh that makes sense. I forgot to look at the largest common factor. Thank you, I was thinking it was every other and how many can fit onto a tray! Thank you! That may help me in my other problem as well!

I came up with the answer of 12. Common greatest factor is 12. hope I did it right!Thanks again!

Thanks! It was hard when I wasn't thinking that way! Now, I am able to do the rest of my homework without any trouble! Thanks for explaining it!

Either nightmares, night terrors, daydreams, or archetypical dreams

Hmm. . . Let me think about this one.

One year, China consumed 4 times as much energy as Brazil.Define a variable and write an expression for the amount of energy China used that year.I don't get the variable part and expression. Not the same person.

I think the question is asking you if the function f(x) equals 8 WHEN x equals 8; true of false? since the function is f(x)= x + 8 the answer is false because 8+10=18

if a^2 + b^2 = c^2 *equation for right triangles and c in your case is 32 meters and because the obj. is a squared the sides are equal to each other therefore: 2x^2 = 32^2 x = side of square AREA= x^2 therefore : x^2 = (32^2) / 2

Since average a= delta v/ delta t 340(.05)= delta v v=17 m/s Furthermore this launch velocity has the angle of 51 degrees. You then use your handy dandy trigonometric skills to find the horizontal and vertical components of the launch velocity. 17cos(51)= horizontal find the vertical?

What is the problem precisely? What is the question?

This is what i've done: (i) T3sin 47 = mg (ii) 37 = T3cos 47 so i said T3 = 54.2523 N 54.25(sin47)/g = m m = 3.96776 kg

It should have read Physics as subject- I mistyped it-Please help me understand this

Water, Oil, and sediment

Is this on the right track?.....mass cannot be created/destroyed, although it may be rearranged in space, and changed into different types of particles. This implies that for any chemical process in a closed system, the mass of the reactants must equal the mass of the products.

The solid pellet will contain the waxes, cellulose, and salt crystals. The supernatant will contain the pigments, water, sugars,and starch.

vix = 4.33 viy = 2.5 vx = 4.33 viy = -2.5 vix= 5 * cos(30) viy= 5 * sin (30) vx= the same because no force is acting on it vy= -viy because nature of parabolic motion and ball is travelling down

You need an initial velocity

Is it still a single displacement reaction? can you walk me through predicting the reaction and then balancing it. I'm lost.

How do you make 36 the area and 26 premeter

Wut is a compound predicate

the h20 and s02 you do not have any carbon though to work with it?

what would the third longest be? cause i know that the second longest would be what you just said obviously, but the third one cant be half of that, or zero, so im a little confused

I am guessing you have Lincoln Interactive?

lol...im taking the same test!

correction: and melted with 4.38g of campor,

yah thanks! i am having a hard time with number one. i know i could sit down and take a long time to do it...but i was wondering if their was a formula to it, or a quicker way to do it...

Thanx, the google search really doesnt help I already tried that, but I'll look in our post office, Thanx again!

an article is like, an, in, a...ect.

i AGREE, seems like he would be talking or thinking about his dead son, that's what i would do, Maybe the author intended for Amy to talk about the fence instead to show his cold personality.

It can not be found with the following information. Good luck, hahahaha

Yeah sorry wasn't thinking when I posted that.

man: woman ::curved :?

words with consonant blends are easy to spell, because?

How do you find out the final Fe

So would that just be .65/1.8 and the answer is 0.36?

your kind of really bad at this