Thursday
August 21, 2014

Posts by Lacy


Total # Posts: 51

academic execellence
A, critical thinking
January 22, 2014

chemistry
You have purifiedLDH using affinity chromatography. Using the bradford assay you determined the total protein concentration of the column fraction to be 10 mg/ml in a final volume of 2.4 ml. You diluted some of your column fraction to 1 mg/ml using SDS Page sample loading ...
December 9, 2013

biochemistry
You have purifiedLDH using affinity chromatography. Using the bradford assay you determined the total protein concentration of the column fraction to be 10 mg/ml in a final volume of 2.4 ml. You diluted some of your column fraction to 1 mg/ml using SDS Page sample loading ...
December 9, 2013

chemistry
You took 0.99ml of a hexokinase assay solution and added 10 ul of an unknown glucose sample. The absorbance at 340nm is 0.422 the extinction coefficient is 6.22x10^3 the molecular mass of glucose is 180.16g/mol. What is the concentration of glucose in the original sample... In...
September 30, 2013

chemistry
You took 0.99ml of a hexokinase assay solution and added 10 ul of an unknown glucose sample. The absorbance at 340nm is 0.422 the extinction coefficient is 6.22x10^3 the molecular mass of glucose is 180.16g/mol. What is the concentration of glucose in the original sample... In...
September 30, 2013

Chemistry
You are asked to prepare a pH = 4.00 buffer starting from 1.50 L of 0.0200 M solution of benzoic acid (C6H5COOH) and some added sodium benzoate salt (C6H5COONa). a) Find the pH of the benzoic acid solution BEFORE adding the salt. b) Use the Henderson-Hasselbalck equation to ...
February 13, 2013

Chemistry
I dont understand part a) How to start the process of finding the pH
February 13, 2013

Chemistry
You are asked to prepare a pH = 4.00 buffer starting from 1.50 L of 0.0200 M solution of benzoic acid (C6H5COOH) and some added sodium benzoate salt (C6H5COONa). a) Find the pH of the benzoic acid solution BEFORE adding the salt. b) Use the Henderson-Hasselbalck equation to ...
February 13, 2013

Lang. Arts 2 questions
dog, and wrote a fantastic essay about paris
November 9, 2012

algebra 2
3/-8 * 2/7 * (-3) Its multiplying fractions, but it wants the answer in simplest form!
October 11, 2012

algebra 2
-3u+7/2=-4/3u-5/4 solve for u in simplest form.
October 11, 2012

Math
x=-2y+1 x+3y=-2 Please help me solve each system of equations and show your work thanks.
February 25, 2012

Science/Evolution
What do scientists believe that humans and apes originate from?
January 19, 2012

algebra (college)
The # N, in millions, of hearing impaired individuals of age X can be approximated by N= 0.00006x^3 + 0.006x^2 - 0.1x +1.4. Approximate to the nearest million the # of hearing impaired individuals of ages 25 and 40. 25= 1.75 and 40= 3 (those are millions!). I know I insert ...
July 31, 2011

human resources
lol..ok I just came down with pneomonia and feel completely out of it and no desire to do the assignment..I was looking for an easy way out and I apologize. Thank you
May 2, 2011

human resources
• Write a 1,300- to 1,500-word paper in which you address the following considerations related to selection tools
May 2, 2011

human resources
o Name three selection tools that you would consider using to hire a police officer. o Choose what you think is the best selection tool or combination of selection tools in choosing the best candidate. o Detail which interview method would be most appropriate for this position...
May 2, 2011

algebra1
y/x+8 y=8x
March 2, 2011

Philosophy
Create an 11- to 14-slide PowerPoint® presentation answering one of the topics found in Appendix A, as well as 3 to 4 principle issues related to your chosen topic. My topic is Should there be a set of uniform morals standard? Thank you
January 29, 2011

accounting
these are great websites. Thank you for pointing me in the right direction. Much appreciated.
January 29, 2011

accounting
Write a 700- to 1,050-word paper, using APA guidelines, based on the scenario below. You want to start your own business. You found an investment group that is willing to give you the capital needed for the first year of your business, but only if you can convince them you ...
January 29, 2011

math
1. Suppose you are in the market for a new home and are interested in a new housing community under construction in a different city. a) The sales representative informs you that there are two floor plans still available, and that there are a total of 115 houses available. Use...
October 27, 2010

social studies
What were the findings of the Nye Committees?
April 11, 2010

chemistry
How many grams of water can be made by the reaction of 1.25 grams of ethanol with 2.50 grams of oxygen?
April 8, 2010

Microeconomics
Consider Good E, which, when sold in a particular country, has an equilibrium price = $10.00. The government of that country decided that it doesn’t like that equilibrium price, and so passes a law which prevents the product from selling for $10.00. After the passage of ...
March 27, 2010

Us after 1877
Why would the Knights of Labor oppose child labor beyond the obvious reason that children should not be forced to work? What about their opposition to convict labor?
March 8, 2010

intro to corrections
identify and describe the five functions of jails
February 3, 2010

science
As the question says is the lion the best predator in the cat family, I am thinking that they mean which 'cat' is best at catching prey.
July 5, 2009

science
I guess they mean which is the best hunter?
July 5, 2009

science
oops should read cat not cart!
July 5, 2009

science
the question we have been given is 'is the lion the best predator in the cart family'?
July 5, 2009

science
My questions is what member of the cat family is the best predator? I have tried to find the answer but each site I have looked at just says that they are predators (lion, tiger, cougar etc). They don't say which is the best. Any help would be appreciated. Thanks
July 5, 2009

Finance
Determining the inflation rate. In the mid 1990s selected automobiles had an average cost of $12,000.The average cost of those same automobiles is now $20,000. What was the rate of increase for these automobiles between the 2 tim eperiods?
April 17, 2009

history
Which countries wanted to join the European Union in 2002?
February 24, 2008

History
Does the federal reserve system affect us directly in any way? How?
February 24, 2008

Histroy
How does the supreme court show that the constitution allows congress to exercise the power to regulate commerce within a state?
February 24, 2008

Literature
I need to find a critical analysis for Thed Lady with the Pet Dog by Anton CHekhov? Can anyone give me advice where I can find this?
October 10, 2007

alg.
Write the equation of the line that passes through point (2, –6) with a slope of –5. I think this is a pretty easy problem, but I'm making it out to be harder than it really is. here is what I got: y=mx+b -6=-5(2)+b -6=-10+b =10 =10 b=4 the equation that I got is...
July 30, 2007

algebra
Complete the ordered pairs for the equation y = 8x + 16. (?, 0),(1/8, ?),(0, ?)(-1/8, ?) my answers are: (-2,0),(1/8, 17), (0,16), (-1/8, 15) are these correct? yes
July 30, 2007

alg.
Find the slope of any line parallel to the line through points (17, 4) and (5, 8). the slope of these is: 8-4 4 1 ----- = --- = --- 17-5 12 3 is 1/3 the correct answer? No you started with the y of the second point, so you have to start with the x of the second point also ...
July 30, 2007

alg.
Determine which two equations represent perpendicular lines. a) y=2x - 6 b) y=1/2x + 6 c) y= -1/2x + 6 d) y= 1/2x - 6 I know that perpendicular lines have negative recipricals, but I'm having trouble with this problem. I think the answer is b & c because they are both 1/2 ...
July 30, 2007

alg.
Find the slope of the line passing through the points (–2, 1) and (3, 9). I know the equation to figure this out is: m = y(2) + y(1) ----------- x(2) + x(1) but its a multiple choice question and my answer is not the same as the choices. how exactly do I set it all up? I ...
July 30, 2007

math
Ihave to evalaute expressions can someone tell me which whay is the correct way. 15+ 20 ÷ 5 Is 15 + 4= 19 or 5 ÷ 5=9 210-5 x 30 Is it 210-150=60 or 205 x30=61590 Have you heard of BEDMAS? it shows the correct order of operation in arithmetic B-brackets first E-...
April 27, 2007

bablylonian numeration
can someone tell me how to write 372 in numeration system? Thank you for using the Jiskha Homework Help Forum. Do you mean Binary, Octal or Hexadecimal? (Broken Link Removed) P.S. 1. http://mathforum.org/alejandre/numerals.html I need to convert 372 into babylonian. I had to ...
April 18, 2007

math
For the universal set U= {0,1,2,3,4,5,6,7} And the sets A={1,5}, B={1,2,3,4} And C= {4, 6} lists the elements in the following Sets. a. A ¿ B b. A U Bf c. A ¿(B U C) d. C ¿ (B ¿ A)f I assume your funny symbol is &...
April 18, 2007

math
I having problems understanding venn set and venn diagrams. Can someone explain this to me. For the universal set U= {0,1,2,3,4,5,6,7} And the sets A={1,5}, B={1,2,3,4} And C= {4, 6} lists the elements in the following Sets. a. A¿B b. A U Bf c. A &...
April 18, 2007

Science
Under what circumstances, if any, will a converging lens form an inverted image of a real object? Under what circumstances, if any, will a diverging lens forms an erect image of a real object? http://hyperphysics.phy-astr.gsu.edu/hbase/geoopt/raydiag.html#c1
February 1, 2007

Science
The speed of sound in a gas depends upon the average speed of the gas molecules. Why is such a relationship reasonable? The greater the density of the medium ie gas pressure, temperature, the better sound traves through it. Why? because there are more molecules per volume to ...
January 30, 2007

Science
The potential energy of a golf ball in a hole is negative with respect to the ground. Under what circumtansces (if any) is the ball's kinetic energy? Its rest energy? The KE cannot be negative, nor can the rest energy be negative.
January 9, 2007

Science
The sun, moon and planets all follow approximately the same path from east to west across the sky; none of them is ever seen in the far northern or far southern sky. What does this suggest about the arrangements of these members of the solar system in space? Think of terms of ...
December 31, 2006

Math
2+2= 7 2=2=4 Why are you being a smart aleck? Or do you really not know?
September 14, 2006

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