Answers by visitors named: Marty

so would the final answer be (x^2 + 5)(x^2 - 4) or (y + 5)(y - 4) ???

You have to use SINE. If you draw a diagram you know that we are looking for the hypotenuse. Therefore sin50=15/x 0.766=15/x 0.766x=15 (divide by 0.766 to isolate x) x=19.58 so the kite string is 19.58m long

Because it is made up of 2 elements {carbon and chlorine}.

Does the answer have to be in scientific notation? If so, how would you figure it out?

4C + S8 -> 4CS2

How do I change the weight of the water removed into moles?

Would the weight of the water removed be 3.211g - 1.570 g?

Was there math involved in this or do you just look at the subscripts?

You look at which column it's in (seventh). that means its outer shell has 7 valence electrons

that doesn't answer the question. what is the molecular formula of capsaicin and please show work

Well i found the moles of each element. Carbon has 5.91mol Hydrogen has 8.51mol Oxygen has 0.988mol Nitrogen has 0.328mol Then I put the moles as subscripts and divded each subscript by the lowest amount of moles (nitrogen with 0.328mol). Then as the empirical formula I get C18H26O3N. So in order to get the molecular formula, I need the actual mass of the molecular formula but I do not know how to find it. Because you have to divide the mass of the molecular formula by the mass of the empirical formula.

Awesome! Thanks

Could you explain the steps you did for the first part? Do I multiply 3.49 x 10^23 by the mass of H2O?

Got it! Thanks

So I calculated the mass of MgSO4 (120.37g/mol) and the mass of 7H2O (126.14g/mol). Then I divided the mass of MgSO4 by MgSO4 . 7H20 multiplied by 100%. My answer was 95.426%. But how do I get the amount of magnesium?

That helps! Thanks!

Would this be a correct general statement about the type of solute dissolves in non-polar solvents: Compounds that are non-polar will dissolve in non-polar solvents. Do you have any tips on how I could elaborate on this?

Could you explain your "like dissolves like" statement?

Would a solubility curve help?

on the x axis is temperature (degrees celsius) and on the y axis is solubility (g/100g H20). Is there any mathematical way to figure this out instead of using the solubility curve.

what are the units of 100 and 40?

The proper form would be -x^2 +2x -1. You could also put it as x^2 -2x -1. Either way they will both factor the same. Just make sure its in standard form (ax^2 +bx +c)

the interest charge would be 11.96*36 = $3833.60 a difference of 76 cents Hi how did you get the 3833.6 from multiplying 11.96*36. Thanks

Thanks

Thank you

Read, Recite, Review! It always works.

Actually it is called the SQ3R method, my bad.

i woudn't know the answer to this ? but i would think there is

i do not ahve a clue but then again im only in 7th grade

the answer to this question is OMG THAT ISHARD JESE KID WAT GARDE R U IN

woops i mean this........ the answer to this question is..... OMG KID THAT IS HARD, WHAT GRADE R U IN

I don't quite understand

2 ounces

Functioning labor unions

x=7.5 y=18.5

aren't you supposed to plug everything in AFTER you derive it?

answers b,d 100% connexus

Determine the sign of the product of −152×−1. Enter + for positive or ­­­– for negative.(1 point)