Ask a New Question
Search
Questions and answers by
KB
Questions (12)
What is the longest wavelength of electromagnetic radiation capable of ionizing this hydrogen atom in an excited state? Report
1 answer
1,039 views
__________ Destiny or Caroline sent an RSVP to the invitation? We __________ everyone __________ it to Jake's party.
A. Has;
2 answers
4,952 views
Identify the correct sentence.
A. In my top drawer is a birthday card from my grandmother and a gold watch from my mother. B. In
5 answers
6,270 views
a recipe calls for 2 1/2 quarts of fish stock and 1 1/2 pounds of shrimp. what is the unit rate of fish stock to shrimp in the
1 answer
748 views
How many joules of energy would be liberated by condensing 49.6 mol of steam at 100.0 °C and allowing the liquid to cool to
1 answer
483 views
When a water gun is fired while being held horizontally at a height of 1.14 m above ground level, the water travels a
2 answers
955 views
Calculate the pH for each of the following points in the titration of 50.0 mL of a 2.7 M H3PO3(aq) with 2.7 M KOH(aq).
pKa1 = 1.3
4 answers
4,672 views
Calculate the pH at the equivalence point for the titration of 0.200 M methylamine (CH3NH2) with 0.200 M HCl. The Kb of
7 answers
3,944 views
. The source of the Supreme Court’s authority is (Points : 1)
moral suasion. judicial activism. concurring opinion. dissent.
1 answer
421 views
A mixture of carbon and sulphur has a mass of 9.0 g. Complete combustion with excess oxygen gives 22.6 g of a mixture of carbon
2 answers
4,720 views
The first three equations I have solved, I would just appreciate someone checking them over to make sure I'm doing them right.
Fi
1 answer
827 views
A homeowner wishes to insulate her attic with fiberglass insulation to
conserve energy. The insulation comes in 40-cm wide rolls
0 answers
549 views
Answers (10)
I need help on all the questions
bob is correct, except that you have to subtract the Force*sin(31). It's a poorly worded problem, to say the least.
Oh... I see where I went wrong. thanks!
Ok, that's what I did before. so 2E-11 = x^2/(0.1-x) so x^2 = 2E-12 - 2E-11x But what I don't understand then is how do we solve for x? I used the quadratic equation but when I plugged in those values it gives me 0. So where am I going wrong?
Thanks!
I'm really confused. I've never done a problem like this before. Could you plug in the values for me? It just doesn't make any sense and my teacher won't explain it to me when I ask about it.
But what's Kw? and the value for NH3? Is that just x? So should it be Kw/5.0x10-4 =(x)(x)/(0.1-x)
I'm not sure how to set up the equations using the volumes, and I'm not even sure what givens I'm supposed to use.
If you heated a hydrate too quickly and some of it splattered out of the beaker how would it affect the calclated percent by mass of water and the molecular formula
Chris Cheggies
