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Ryan
I'm a math guy. If you would want any help, mail me at ryandck@rocketmail.com or ryandck@gmail.com
Red light camera flashed?
So I was driving on a road with 3 lanes. I was in the very right one because I just turned right and it's like 2am and super dark. I go past the intersection and it merges to two lanes but there is no indication that the lane was right turn only.
The light was green I know I wasn't speeding because I was at a complete stop before goinf.
Do you think the ticket will come??
3 AnswersLaw Enforcement & Police5 years agoCost of sensors?? Please help!?
For a project, I created a future technology that would have a fingerprint scanner, occular scanner, wavelength scanner, and a safe.
I was wondering about what would the cost be for each of these?
1 AnswerEngineering7 years agoHow to speed up flu vaccine shots?
I am going to leave the country in 4 months, but when I went in for a physical, I realized I was missing a Hepatitis A vaccination shot. This requires one shot and a follow-up 6 months later. A friend told me about speeding up the process to 3 months.
Can anyone enlighten me on this? Thanks!
2 AnswersMen's Health8 years agoHow to help someone with a letter of recomendation?
I asked a teacher to write me a letter of recommendation, and all the website says 'to attest to your academic ability'. What are some things she can include to create length and more variety in the letter? Thanks!
Other - Education9 years agoEvaluating and justifying limits.?
My teacher hasn't gone much in depth yet, but I was interested to know how to solve a problem like this:
lim-->0 sin(x)/x
Obviously this doesn't work, or it'd be undefined. How can I justify it so I can figure out the limit?
3 AnswersMathematics9 years agoHelp with log question?
So I did this problem on another time earlier today, but I turned that in, and I can't remember how to do this problem. Simplify it please?
log3(x) * log3(x) - log3(x^2) = 3
3 AnswersMathematics9 years agoWhat is wrong with these sentences? [Punctuation help...]?
If you could just let me know what to change in the sentence to make it correct... [All sentences have at least one punctuation error.]
1. Only people who like anchovies and garlic will like this pizza.
2. The play was well attended, few, if any, empty seats were left by curtain time.
3. My cousins were supposed to meet me at the station at noon, they were fifteen minutes late.
4 AnswersHomework Help9 years agoWhich two of these is most likely to form an ester?
C2H6
C2H2Br2
C2H5OH
CH3COOH
CHClBrI
C4H9OH
Which two of these makes an ester?
1 AnswerChemistry9 years ago10 points, AP Chem help!?
Which applies to the reaction as it proceeds at a constant temp.?
I. The rate of reaction decreases.
II. The effectiveness of collisions between reactant molecules remains the same.
III. The frequency of collisions between reactant molecules remains the same.
A. I only
B. II only
C. I and II
D. II and III
E. I, II, and III
Any help appreciated, I'm not really sure thanks!
1 AnswerChemistry9 years agoQuestion about heterogeneous catalysts?
I have a quick question about these... and was wondering if: It undergoes a permanent chemical change, is in the same phase as the reacting particles or decreases potential energy of the activated complex? Thanks a bunch!
1 AnswerChemistry9 years ago10 points, Which fraction of the mass of the salt in the crucible is lost when it's heated to constant weight?
Epsom salt, MgSO4 * 7H2O, (mass 246 grams) can be dehydrated by heating in an open crucible. Which fraction of the mass of the salt in the crucible is lost when it's heated to constant weight?
1/8, 1/7, 1/4, 1/3, or 1/2?
1 AnswerChemistry9 years agoAP Chem help. What does 3e- represent?
In Al^3+ + 3e- => Al^0, what does 3e- stand for?
a. 3 x 96500 electrons
b. 3 x 6.02^23 electrons
c. 3 x 6.02^23 coulombs
d. 3/27 x 96500 eletrons
e. 3/27 x 6.02e23 eletrons
I think the answer is A... but I'm not very positive. I know electrons go to faradays to coulombs.
2 AnswersChemistry9 years agoChemistry help please! 10 POINTS [AP Chem]?
Hey, here are a couple questions I've been stumbling over.
1. When an ionic solid dissolves in water, the sign for delta s is positive. Why is this?
2. Discuss the role of free energy change, delta g, in determining the solubility of a solute/solvent pair.
Thanks!
1 AnswerChemistry9 years agoIf temperature goes down, does the average molecular velocity decrease too?
10 points a quien va a ayudarme!
3 AnswersChemistry9 years agoWhich occurs when a substance is converted from liquid to gas at the normal boiling point?
I. The potential energy of the system increases.
II. The distance between molecules increases.
III. The average kinetic energy of the molecules increases.
A. I only
B. II only
C. I and II only
D. II and III only
E. I, II, and III.
2 AnswersChemistry9 years agoCalculate ΔG° and K at 25°C for the following reactions? 10 points!?
2 Cu+(aq) Cu2+(aq) + Cu(s)
Thanks!
1 AnswerChemistry9 years agoCalculate the pH after the addition of the following amounts of HCl? Please help! 10 Points?
A 25.0 mL sample of 0.100 M pyridine (Kb for pyridine is 1.7 10-9) is titrated with 0.100 M HCl solution.
a. 4.0mL
b. 8.0 mL
c. 12.5 mL
d. 25 mL
I've already gotten the other 5, but when I do the same thing, it doesn't work.
1 AnswerChemistry9 years agoCalculate the pH of a solution that is 0.50 M HF and 1.00 M KF?
Please, I am really confused... I know you use Henderson-Hasselbach, but I still am stuck. Any help is appreciated, thanks!
1 AnswerChemistry9 years agoPlease trig identities! 10 points?
Sorry for asking again, but I have these four left that have been driving me crazy... :/
1. (tanv*sinv)/(tanv+sinv) = (tanv-sinv)/(tanv*sinv)
2. (1+tanx)/(1-tanx) = (cosx+sinx)/(cosx-sinx)
3. (cotx+1)/(cotx-1) = (1+tanx)/(1-tanx)
4. (sin^3 x + cos^3 x)/(sinx+cosx) = 1-sinxcosx
2 AnswersMathematics9 years ago