Answers by visitors named: alan

yes thank you

it doesn't make sense to me either that's why i'm posting the question up

i'm trying i'm just posting the questions up so I can compare other peoples work to mine to see if im correct cause i don't want to turn in my homework and get an f again

i thought it was that answer too but i thought the answer was just too simple to be true

oh i get that alot

ok i'll start doing that from now on

thank you very much

yes i'm correct for once

i was in honors in jr. high and my new high school doesn't offer it so i'm stuck in just regular geometry. I also think algebra 2 is easy it is just that geometry gets you sometimes.

Choose the phrase that completes the following statement as stated by the point, line, and plane postulates: Once plane___________ passes through three noncollinear points. a. never b. sometimes c. always d. point, line, and plane postulates do not address this topic directly.

so the answer must be A right

ok i get it now i just didn't know what he was saying at first but now I know thanks.

1. b 2. a 3. c 4. c 5. a 6. b 7. a 8. b 9. d 10. d 11. 12. 13. 14. 15.

here is how to solve the problem, put I need help following these instructions. would you show me the math step by step, so I could understand? Here is how to solve the problem: Use the Henderson-Hasselbalch equation. pH = pKa + log ([Tris] / [Tris HCl]). Here the pH is 8 and the pKa of the Tris is 8.3, so you can solve for the ratio ([Tris] / [Tris HCl]). After the reaction, when 0.002 moles of H+ were produced, this H+ will CONSUME the Tris base to FORM more Tris HCl From the first part of the problem you have the ratio ([Tris]/ [Tris HCl]) = ???. You also know you have 50mL of 0.1M Tris buffer, or 0.005 moles of total Tris (in acid or base forms), which can be written out as "moles Tris + moles TrisHCl = 0.005. Combine this with the equation for the ratio, and solve to find # of moles of both the base and acid form. This will tell you how many moles of acid and base form Tris you had BEFORE the reaction. Now subtract 0.002 moles from the amount of Tris base, and add 0.002 moles to the amount of TrisHCl you calculated (the H+ consumes base, makes TrisHCl). Now using the same pKa, and the new calculated concentrations of Tris and TrisHCl, you can again use the Henderson Hasselbalch equation, this time solving for pH, the final pH Thank you.

TRIS is a buffer used in biochemistry

0.1 M means 0.1 mol/liter

Here are instructions on how to solve it. Would you help me step by step with the math and instructions?: Heres how to solve it: Use the Henderson-Hasselbalch equation. pH = pKa + log ([Tris] / [Tris HCl]). Here the pH is 8 and the pKa of the Tris is 8.3, so you can solve for the ratio ([Tris] / [Tris HCl]). After the reaction, when 0.002 moles of H+ were produced, this H+ will CONSUME the Tris base to FORM more Tris HCl From the first part of the problem you have the ratio ([Tris]/ [Tris HCl]) = ???. You also know you have 50mL of 0.1M Tris buffer, or 0.005 moles of total Tris (in acid or base forms), which can be written out as "moles Tris + moles TrisHCl = 0.005. Combine this with the equation for the ratio, and solve to find # of moles of both the base and acid form. This will tell you how many moles of acid and base form Tris you had BEFORE the reaction. Now subtract 0.002 moles from the amount of Tris base, and add 0.002 moles to the amount of TrisHCl you calculated (the H+ consumes base, makes TrisHCl). Now using the same pKa, and the new calculated concentrations of Tris and TrisHCl, you can again use the Henderson Hasselbalch equation, this time solving for pH, the final pH.

I just made the neg to a pos and finished the problem. I got pH=6.3 for a final answer. hope that is what you came up with.

what up?!

9.8m/s

we square all and evalaute as a diff of 2 squares

I have the same problem and I can't figure it out the answers on these forums are useless

the answer is distance over time. total distance is 1500 miles total time is 3.5 hours. 1500/3.5=428.57 mph.

distance over time. 18/2=9 so is traverling at 9 feet per second multiply by the amount need to turn one second into an hour and u will have your answer.60 x 60 just a clue to help.

collect all like terms 3x^2-5x^2+12y-3y+8x =-2x^2+9y+8x

186

The lion said to hare. Ah you have come at last

can you tell me the magnitude of the force P and the mass of block C? show work please

Evaluate the following expression. 7^0

2/5

this is wrong it didnt give me the right answer

it's d c: 100%

jn is correct for pearson 100%