Friday

April 18, 2014

April 18, 2014

Total # Posts: 51

**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 buff...

**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 buff...

**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...

**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...

**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 de...

**Chemistry**

I dont understand part a) How to start the process of finding the pH

**Chemistry**

I dont understand part a) How to start the process of finding the pH

**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 de...

**Lang. Arts 2 questions**

dog, and wrote a fantastic essay about paris

**algebra 2**

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

**algebra 2**

-3u+7/2=-4/3u-5/4 solve for u in simplest form.

**Math**

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

**Science/Evolution**

What do scientists believe that humans and apes originate from?

**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 tho...

**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

**human resources**

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

**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...

**algebra1**

y/x+8 y=8x

**Philosophy**

Create an 11- to 14-slide PowerPointÂ® 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

**accounting**

these are great websites. Thank you for pointing me in the right direction. Much appreciated.

**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 hav...

**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...

**social studies**

What were the findings of the Nye Committees?

**chemistry**

How many grams of water can be made by the reaction of 1.25 grams of ethanol with 2.50 grams of oxygen?

**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 t...

**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?

**intro to corrections**

identify and describe the five functions of jails

**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.

**science**

I guess they mean which is the best hunter?

**science**

oops should read cat not cart!

**science**

the question we have been given is 'is the lion the best predator in the cart family'?

**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

**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?

**history**

Which countries wanted to join the European Union in 2002?

**History**

Does the federal reserve system affect us directly in any way? How?

**Histroy**

How does the supreme court show that the constitution allows congress to exercise the power to regulate commerce within a state?

**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?

**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...

**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

**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 slop...

**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 ...

**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 ...

**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-ex...

**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 c...

**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 Bf c. A ¿(B U C) d. C ¿ (B ¿ A)f I assume your funny symbol is &...

**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 Bf c. A &ique...

**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

**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 r...

**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.

**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 ...

**Math**

2+2= 7 2=2=4 Why are you being a smart aleck? Or do you really not know?

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