Thursday

January 19, 2017
Total # Posts: 24

**Chemistry**

Based on chemical structures, explain why acetophenone is only separated at the end by distillation. The mixture was acetophenone and ethyl trimethylacetate

*November 10, 2016*

**Organic Chemistry**

Explain why the formation of one geometric isomer is favored over the other?

*October 18, 2016*

**Calculus**

find the point on the plane 5x+4y+z=12 that is nearest to (2,0,1)

*April 28, 2016*

**Chemistry**

What is the value for Kb for the formate anion, HCOO-? Ka(C7H5O2)=2.1x10^-4.

*April 25, 2016*

**Calculus**

Compute the curvature. r(t)=(t^2,2t^3/3) t >0 The answer is 1/2t(1+t^2)^3/2 I have tried multiple times but i cannot arrive to this answer.

*April 23, 2016*

**Chemistry**

If all of the SCN- was not converted completely converted to FeNCS^2+ when the calibration curve was prepared, would this raise or lower the value of Keq? Explain

*March 22, 2016*

**Biology**

Use your understanding of natural selection to describe how the following trait might have evolved: Plants have pores on the surfaces of their leaves that allow carbon dioxide into the leaf (for photosynthesis), but also allow water to escape. Land plants have guard cells ...

*February 8, 2016*

**Chemistry**

What is the pressure of 1.78 g of nitrogen gas confined to a volume of .118 L and 25 degrees Celsius?

*November 22, 2015*

**chemistry**

nevermind i figured them out

*November 19, 2015*

**chemistry**

Write the molecular,complete ionic, and net ionic equations for the reactions that occur, if any, when solutions of the following substances are mixed: a) nitric acid and potassium carbonate b) sodium bromide and lead nitrate c) acetic acid and calcium hydroxide d) calcium ...

*November 19, 2015*

**general chemistry**

How many oxygen atoms are in 3.90 g of quartz?

*September 10, 2015*

**math**

I am solving a problem and have -cos(a)=-1/2. How do I solve for a?

*February 28, 2015*

**ap calc**

Find the area of the shaded region, bounded by the parabola 16y=5x^2+16 and the lines y=0, y=6, and x=5. I broke the figure up into two parts and got 3102/5. It seems like a large answer am I correct? Your help is greatly appreciated.

*February 28, 2015*

**AP Calc**

If y= (e^x-e^-x)/(e^x+e^-x), then y'= I took the derivative and got: y'=(e^x+e^-x)(e^x+e^-x)-(e^x-e^-x)(e^x-e^-x)/(e^x+e^-x)^2 I know the correct answer is 4/(e^x+e^-x)^2

*January 11, 2015*

**Government**

What is one specific example of why a person would be summoned to the Erie County Supreme Court? I know that the Erie County Supreme Court deals with criminal and civil cases.

*January 11, 2015*

**Psyc, statistics**

Introduction to Hypothesis Testing In an article entitled “Science and ethics in conducting, analyzing, and reporting psychological research” in the journal Psychological Science (1994), psychologist Robert Rosenthal examines the relationship between a researcher&#...

*August 6, 2014*

**Math**

Dorothy and Rosanne are baking cookies for a party. Working alone, Rosanne can finish the cookies in 6 hours. Dorothy can finish them in 8 hours if she is working alone. How long will it take them to bake the cookies if they are working together? Round your answer to the ...

*May 8, 2014*

**English**

Decide which of the two reasons offered in each instance will be more persuasive to the specified audience.Write out the implied warrant for each "because" clause and explain whether the specific audience will likely grant it or not. 1)Audience:people who advocate a ...

*September 19, 2013*

**health and diseases**

this was not very helpful but thanx anyways.

*January 25, 2010*

**health and diseases**

I need a little help with an analogy for Nephrogenic diabetes insipidus. I'm not sure excatly how to make an analogy for that. i don't know what to compare Nephrogenic diabetes insipidus to. please help

*January 25, 2010*

**Healthcare**

I agree with everything above....that is exactly how i feel! i have the same problems!

*June 4, 2009*

**Healthcare**

I agree with everything above....that is excatly how i feel! i have the same problems!

*June 4, 2009*

**ethics**

Things don't get fixed over night. Sounds like some people need to get a little more patience. Obama is doing a fine job.

*March 16, 2009*

**ethics**

Things down get fixed over night. Sounds like some people need to get a little more patience. Obama is doing a fine job.

*March 16, 2009*

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