Saturday
October 25, 2014

Posts by remy


Total # Posts: 65

Bio/CHEM
11. You need to make a 1:8 ratio of DNA of two DNA types A and B (A:B). Your total aliquot should be 2ng/26 ìL. For each of the following sets, calculate how much of each extract you should use and how much TE-4: a. Extract A: 2.5 ng/20 ìL, Extract B: 252.3 pg/&...
May 24, 2013

Biology dilutions
This is the homework exercise: You want to add 0.13 ul of DNA to 4.87 ul of extraction mix to have a final total of 5.0 ul of sample. But you don't want to make 0.13 aliquots because it is too small. Make a dilution to accomodate for the small aliquot. Any help would be ...
March 28, 2013

Biology (dilutions)
This is the homework exercise: You want to add 0.13 ul of DNA to 4.87 ul of extraction mix to have a final total of 5.0 ul of sample. But you don't want to make 0.13 aliquots because it is too small. Make a dilution to accomodate for the small aliquot. Any help would be ...
March 27, 2013

math
write 1 2/3 as a fraction?plezzzzzzzzz hellllllllllllllllllllllllllp!!!!!!!!!!!!!!!!!!!
January 16, 2013

math
Simplify each of the following exactly: (8^(-1000) sqr2^10000)/16^500 log_(8) 2
October 27, 2012

math
jhgjdykduykd
August 20, 2012

calculus
Antiderivative problem! Given f'(x)=3cosx–11sinx and f(0)=–2,find f(x)=
June 6, 2012

calculus
Gravel is being dumped from a conveyor belt at a rate of 50 cubic feet per minute. It forms a pile in the shape of a right circular cone whose base diameter and height are always the same. How fast is the height of the pile increasing when the pile is 24 feet high? Recall that...
May 14, 2012

calculus
At noon, ship A is 30 nautical miles due west of ship B. Ship A is sailing west at 25 knots and ship B is sailing north at 25 knots. How fast (in knots) is the distance between the ships changing at 6 PM? (Note: 1 knot is a speed of 1 nautical mile per hour.)
May 14, 2012

calculus
A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.2 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 8 cm. (Note the answer is a positive number).
May 14, 2012

calculus
The altitude of a triangle is increasing at a rate of 3.000 centimeters/minute while the area of the triangle is increasing at a rate of 2.500 square centimeters/minute. At what rate is the base of the triangle changing when the altitude is 9.000 centimeters and the area is 93...
May 14, 2012

Maths
how would you factorise this: (p+q)^2+5(p+q) to get this answer:(p+q)(p+q+5)
April 11, 2012

Statistics
Hi, Ive looked online and in my textbook but I cant a good explanation. Basically, I need a detailed explanation of why quartile deviation is very effective?
March 14, 2012

Hostory / Social Studies
How Was Big Business Affected By War Mobilization ?
March 12, 2012

Social Studies / History
What Segments Of U.S Society Were Affected By The Institution Of Selective Service System ?
March 11, 2012

Math - HELP !
there are 50 students in the seventh grade , 62 percent of these students are involved in the drama club.how many seventh grade students are in the drama club ?
March 10, 2012

English Law
I meant to also say what they in terms of the UK law
March 6, 2012

English Law
what is an arbitration clause? What is a cancellation clause? What is a prevailing law clause? What is a complaints procedure?
March 6, 2012

Accounting
Do you include opening stock in the profit and loss account?
February 17, 2012

History
Why Was It Possible For One Event To Cause A War Among So Many Countries ? (Cite Specific Evidence).
February 5, 2012

Advanced Biochemistry
ok thank you!
January 27, 2012

Advanced Biochemistry
Cryotosporidium pervum sporozoites are prolate spheres approximately 4 um long and 1 um wide. The average density of the cell is 1.28 g/mL. Approximately 7% of the wet weight of the organism is soluble protein. Estimate the number of molecules of a particular enzyme per cell ...
January 27, 2012

Chemistry help!!
Consider the titration of the weak acid HA with NaOH. At what fraction of Ve does pH = pKa - 1? At what fraction of Ve does pH = pKa + 1? Calculate the pH at these two points plus Vb = 0, 1/2Ve, Ve and 1.2Ve, if 100 mL of 0.100 M anilinium bromide (pKa = 4.601) is titrated ...
November 29, 2011

Analytical chemistry help!
Great I think I can figure the rest out! Thank you for your help!
November 26, 2011

Analytical chemistry help!
I converted every thing to mols instead of milli mols so for the first part got pH=9.208 + log(1-(4.20/11.42)/(4.20/11.42) so my pH= 9.44 when 4.20 mL of 0.438 M HClO4 is added?
November 26, 2011

Analytical chemistry help!
Calculate the pH of a solution made by mixing 50.00 mL of 0.100 M NaCN (Ka of HCN = 6.2 x 10-10) with a) 4.20 mL of 0.438 M HClO4 and b) 11.82 mL of 0.438 M HClO4. What is the pH at the equivalence point with 0.438 M HClO4?
November 26, 2011

Analytical Chemistry 2
Ve is volume at equivalence point Vb is volume of base
November 26, 2011

Analytical Chemistry 2
Consider the titration of the weak acid HA with NaOH. At what fraction of Ve does pH = pKa - 1? At what fraction of Ve does pH = pKa + 1? Calculate the pH at these two points plus Vb = 0, 1/2Ve, Ve and 1.2Ve, if 100 mL of 0.100 M anilinium bromide (pKa = 4.601) is titrated ...
November 26, 2011

Analytical Chemistry
Consider the titration of 100.0 mL 0.1 M KOH with 1.0 M HBr. Find the pH at the following volumes of acid (Va) added: Va= 0, 1, 10 and 10.1 mL.
November 26, 2011

Maths
A Swiss Roll cake is 21cm long. When I cut it onto slices if I reduce the thickness of each slice by 1/4cm. Taking x as the number of thicker slices, write down an equation in x and solve. I just dont undertsand how to form the question.
January 10, 2011

Economics
Suggest three reasons why there is a market for expensive imported alcoholic drinks in countries such as Thailand, South Korea or India when there are locally produced substitues sold at a fraction of the price.
November 1, 2010

Maths Urgent
I have worked out the gradient funtion. If dy/dx = 8x - 3x^2 , then how you show that dy/dx is postive when 0<x<8/3
October 18, 2010

Maths
If dy/dx = 8x - 3x^2 , then how you show that dy/dx is postive when 0<x<8/3
October 18, 2010

Science
A bus makes a 10 mile journey throuh town. Its top speed is 30mph and its mean speed its 10 mph. Explain why these speeds are different?
September 21, 2010

Maths
What roots can I use to sketch this graph of: y = x^4 - x^2
March 3, 2010

Business Studies
Why do businesses need to raise finance?
December 30, 2009

Business Studies URGENT
What are some of the factors that can lower the risk in starting up a business?
December 29, 2009

Buiness Studies URGENT
What are some high-risk factors of starting a business?
December 28, 2009

earth
What is the difference between a resource and a condition
November 10, 2009

economics
apples cost £2 and pears cost £4. For John the marginal Utility (MU) of the last apple consumed was 4 and MU of pears was 12. For Paul MU of last apple was 3 and MU of last pear was 6. Which person is not maximising utility and how can you tell? What should they do?
November 8, 2009

Maths
A cubic graph has the equation: y = 3(x-1)(x+2)(x+5) Write in similar form the equation of the graph after a translation ( 3) Could you show me step-by step please?
October 1, 2009

math
I am pretty sure that this is how you do it: There are 26 letters in the alphabet so if there are five vowels then it would be 5/26 in the word segments 7 letters are used so you dont count the second s so it would be 7/26
September 24, 2009

Maths
2y^2 - 8y - 8 = 0
September 20, 2009

Maths
Thankyou
September 20, 2009

Maths
When the first n positive integers are added together, their sum is given by 1/2n(n+1) Find the value of n for which the sum is 105.. Can you show me a step by step please?
September 20, 2009

Maths
wHAT IS AN INTEGER?
September 20, 2009

Maths
What is an integer?
September 20, 2009

Maths
Find the equation of a line which is perpendicular to 2x + 3y = 4 passing through ( -5, 1) Can you show mw how to work this out step by step please?
September 20, 2009

Maths
I know but can you just tell me if this is correct: a = 1 b = 8 c= 5 x= -8 + square root 8^2 - (4x1x5) - -------------- 2
September 17, 2009

Maths
I know but can you just tell me if this is correct: a = 1 b = 8 c= 5 x= -8 + square root 8^2 - (4x1x5) - -------------- 2
September 17, 2009

Maths
I have already asked this question but I have to use my calculator to solve x^2 + 8x + 5 = 0 Someone gave me a link to a quadratic formula solver but when I enter it into my calculator I nvever get the right answer.
September 17, 2009

Maths
Thanks but when I enter it on my calculator I never get the right answer.
September 17, 2009

Maths
Use your calculator to solve x squared + 8x + 5 = 0
September 17, 2009

Asap can someone pplz check these answers
Please check my answers I have 2 do other things right now
January 26, 2009

Poem: Beware do not read this poem by Ishmeal Reed
Could someone please check these ASAP! 1. What story does the poem tell in the first three stanzas? Answer: The story that the poem is telling is a women who lived amoungst mirrors had locked herself in her house, and two villagers broke in, and she escaped into her mirror. ...
January 26, 2009

Poem: A Voice by Pat Mora
Could you please check my answers thanks 1.What happens when the mother goes to the state capitol to give her speech? Answer: When the mother goes to the state capitol to address her speech she wanted to hide her face. Also she faked hoarseness, and she felt her breath was ...
January 26, 2009

7th grade
Umbrella Under Universe Uranus
January 26, 2009

Economics
I need some help in this question, thanks. Suppose that a Home country has many trading partners and each trading partner has its own currency. (a) If each trading partner allows its currency to float, is it possible for Home to fix its exchange rate against all of its trading...
May 20, 2008

Economics
Correct me if I am wrong, if a country's currency appreciates, foreign goods are relatively cheaper than domestic goods, so imports increases and export decreases. And if depreciates, the opposite is true?
May 19, 2008

english
what is penelope hesitation toward odysseus?
March 27, 2008

english
What is penelope hesitation towards odysseus?
March 27, 2008

Science
What is Prothallium? What is it's Purpose. http://en.wikipedia.org/wiki/Prothallus
July 10, 2007

math function rule input/output
Rule add7 Then subtract 7 Input. Output 3. 8 7
March 21, 2007

Economics
What are the advantages and disadvantages of different trade barriers? Take a shot. What do you think? Hint: consider the question broadly, not just in terms of pure economic reasoning.
September 27, 2006

Economics
Why would the U.S. impose a voluntary export restraint on Japan for textiles instead of using a import quota or tariff? Why indeed. This is as much an international political question as a question in economics. Quota or tariffs tend to apply to all nations rather than a ...
September 27, 2006

Pages: 1

Search
Members