Questions Asked on
February 2, 2008

Chemistry
Predict the order of increasing vapor pressure at a given temperature for the following compounds: CH3CH2CH2CH2OH HOCH2CH2CH2OH CH3CH2OCH2CH3
asked by Lauren 
Chemistry
which of the following compounds would you expect to exhibit only London forces? CCL4 CCLH CaI2 PCl5
asked by Lauren 
biochemistry lab
A) If you make up a solution of 50 mL of 0.1 M TRIS in the acid form, what will be the pH? B) If you add 2 mL of 1M NaOH to the solution in part A, what will be the pH? If it is needed, here is some addition information: TRIS pka= 8.3 mw of TRISHCL= 157.6
asked by erin 
chemistry
When Dr. Farrell was a graduate student, he once made up a pH 8.0 sodium acetate buffer. Why would the casual observer to this buffering faux pas come to the conclusion that he had the intellectual agility of a small soap dish?
asked by matt 
chemistry lab
Here are 2 questions I worked out, but need them checked. Also, can't get answer to another question correct unless question 1 is correct. Would you check the first 2 and help me with the third? 1) What is the pH of a 0.05 M solution of TRIS acid (pka =
asked by ryan 
chemistry lab
1) If your spectrophotmeter can measure n absorbance up to 1.5, what is the maximum concentration of NADH that you can measure without diluting? 2) If you add 3 mL of water to 1 mL of NADH, mix and get an absorbance of 0.2, what is the concentration of the
asked by jennifer 
math
Sneakers were on sale for 25% off their original price. Lola bought a pair of sneakers that had an original price of $43. She also paid a slaes tax 7.25% on the sale price of the sneakers. How much did Lola pay for the pair of sneakers? Round to the
asked by mark 
chemistry
A) If you make up a solution of 50 mL of 0.1 M TRIS in the acid form, what will be the pH? (pka of TRIS: 8.3, molecular wt: 121.1 g) B) if you add 2mL of 1 M NaOH to the solution, what will be the pH? Thank you.
asked by matt 
chemistry lab
An enzymecatalyzed reaction is carried out in a 50mL solution containing 0.1 M TRIS buffer. The pH of the reaction mixture at the start was 8.0. As a result of the reaction, 0.002 mol of H+ were produced. What is the ratio of TRIS base to TRIS acid at
asked by alan 
chemisrty
what is the concentration of [H+} in molars, millimolars, and micromolars for a solution of pH 5? In case you need this information: milli= 10^3 micro=10^6 Thank you.
asked by alex 
chemistry
An enzymecatalyzed reaction is carried out in a 50mL solution containing 0.1 M TRIS buffer. The pH of the reaction mixture at the start was 8.0. As a result of the reaction, 0.002 mol of H+ were produced. What is the ratio of TRIS base to TRIS acid at
asked by alan 
algebra2
Suppose it takes 3 days for a space vehicle to travel from Earth to the moon. About how long would it take for the same vehicle traveling at the same speed to Jupiter? Moon  240,000 mi Jupiter  391,000,000. The space vehicle would take how many days to
asked by bb 
year 7 history
i need to write 3 diary entries about the black death. i need to include the cures the causes what people first thought started the black death and the outcome. any help would be appreciated.
asked by dewberry 
American Literature
Using literary elements, compare and contrast Abigail Adams' letter to her daughter with Jean de Crevecoeur's essay from Letters from an American Farmer.
asked by Rachel 
math
When a figure is drawn in quadrant 2, and you reflect it over the x axis, do you reflect in quadrant 1 or four? I think you reflect it in quadrant 4. Also, where would you reflect it over the x axis when the original figure is in quadrant 1? And y axis?
asked by mark 
geometry
place each given figure in a coordinate plane. what are the coordinates of each vertex? a) a right triangle b) an isosceles triangle
asked by anne 
MATH
An entry level position pays 8 dollars per hour. A 4% raise is given at the end of each year of employment. What would the pay be after 3 years? My mom tried to help me and she got 8.998912 which we figured would round to 9 dollars. When i reworked the
asked by lindsey 
geometry
prove the following statements using a coordinate proof. the diagonals of a rectangle bisect each other.
asked by anne 
Math
Write 1,250% as a decimal.
asked by greatdanelola 
math
The old lion cage at the zoo was a square, with sides x meters long. For the part of the zoo's 50 birthday celecration, the zoo expanded the length and width. The expression for the total area of the new cage is (x^2+18x+81) square meters. Part 1:Robert
asked by mark 
MATH
An entry level position pays 8 dollars per hour. A 4% raise is given at the end of each year of employment. What would the pay be after 3 years?
asked by Casey 
chemistry
Here are 2 questions I worked out, but need them checked. Also, can't get answer to another question correct unless question 1 is correct. Would you check the first 2 and help me with the third? 1) What is the pH of a 0.05 M solution of TRIS acid (pka =
asked by alan 
History
The wall of reaction created in Europe by Metternich and other conservatives really collapsed with the A) Peterloo Massacre B) Decemberist Revolt C) Sucess of the Greek Revolution against turkey D) the 1830 JUly Revolution in france I think it is D
asked by George 
algebra
a long distance runer started running a course, running at an average speed of 2 mph. 1.33 hrs later, a cyclist travelde the same course at an average speed of 4 mph. how many hrs after the runner started did the cyclist overtake the runner? round answer
asked by tina 
Finance
An individual has $17000 income in period 0 and $60,000 income in period 1. If the individual desires to consume $30,000 in period 1, what is the maximum consumption in period 0 assuming the interest rate is 6%? I can't find a formula to solve this
asked by Will Jr. 
economics
How is the price of living CPI calculated and could this be used to determine inflation for a given year?
asked by Meg 
physics
In a series circuit, does the current only take one path? What type of circuit is used in computers. Is it (1)series (2) parallel or (3) periodic? Is the current in a parallel circuit the same everywhere?
asked by Mrs M 
math
Consider the following binomials. A=(x^2+5x) B=(6x+30) Part 1: Factor each binomial by finding the GCF. Then, add the two factored binomials to make a single expression. Part 2: Now add the original forms of binomial A and B together to make a trinomial.
asked by mark 
Chemistry
An element, M, reacts with oxygen to give an oxide of formula M3O4. A sample of M of 257 mg is placed in a 500.0 mL vessel containing oxygen at 0.991 atm and 23.0°C. After cooling the vessel back to the original temperature, the pressure was 0.813 atm.
asked by Student 
Algebra
The base of triangle is 4cmgreater then the height, the area is 48cm squared. Find the height and the length of the base.
asked by Debbie 
Algebra Sq Rt
This looks like a trick question (sqrt3+5 sqrt6)(sqrt35 sqrt6) Do I sq 3 or do I add 3 and 5 first? I think I have to do the same to both sides.
asked by Micah 
algebra
Divide 32x^832x^4+20x^2 by 4x^2
asked by becky 
science(chem)
Hi =) I have two Q's 1. What are the 2 purposes of using a caffine standard during the HPLC process? In general not talking about HPLC I would think a standard is for a)comparing to your own results to see how good your results came out. b) seeing if you
asked by ~christina~ 
Science (Chemistry)
The total pressure in a flask containing air and ethanol at 25.7C is 878 mm Hg. The pressure of the air in the flask at 25.7C is 762 mm Hg. If the flask is immersed in a water bath at 45.0C, the total pressure is 980 mm Hg. The vapor pressure of ethanol at
asked by Bob 
Social Studies
What is social injustice on a personal scale? Any examples would be appreciated. Would someone attacking you and you use self defense against them a form of social injustice?
asked by Pingu Head 
year 7 RE
PLEASE could anyone help me . I need to find 6 JEWISH starters 6 JEWISH main courses and 6 Jewish deserts. thanks for your help
asked by DANNY 
Algebra word problem
A 30 inch TV set has a width of 24 inches. What is its height?
asked by Micah 
accounting
I am taking beginning Accounting. I have learning disabilities, so it is very difficult sometimes for me to keep up with the information in class. Once I understand it then I am fine. Can someone please help me understand how to balance this out? Thank you
asked by Venice 
math
Damien sets up a bucket to catch raindrops. The bucket can hold only 1 gallon. If each raindrop is made up of about 1/90 fluid ounceof water, how many raindrops will the bucket be able to hold? I need help with this question. I know that 1 gallon=128 fluid
asked by mark 
Cultural Diversity
I am having difficulty locating the answers to the questions for the following What are the implications for patients? What types of reform efforts are being implemented to improve caregivers' socialization skills? Will these reform efforts be effective?
asked by Tiane 
HCA 230
CORRECTION THIS QUESTION IS FOR MY HCA 230 CLASS NOT CULTURAL DIVERSITY CLASS.
asked by Tiane 
Intro Finance
Not sure how to solve: Two Questions: (1)Cindy has income of $12000 in year 0. Calculate her income in year 1 if she wants to consume $26,000 in year 0 and $14,000 in year 1. Assume the interest rate is 4% per year. (2)Jonathan has income of $45000 in
asked by Will Jr. 
algebra
Find the perimeter of a polynomial with sides 3x 9 4x 6 6x+1 6
asked by becky 
COM 135
how you would use these steps to create the manual mentioned in this scenario. the steps are prewriting,writing rewriting. Explain the purpose and substeps of each step and how they relate to the manual. This is the scenerio.... As a customer service
asked by Dawn 
accounting
hey there, i was wondering if anyone could help me with the following questions. I would really appreciate your help . Multiple choice: A company obtained a patent for a drug it developed. The amount capitalized in asocciation with the drug patent will
asked by Sarah 
Chemistry
A tank of gas at 21 degrees C has a pressure of 1.0 atm. Using the data in the table answer the following questions. Explain your answers A. If the tank contains carbon tetrafluoride, CF4 is the liquid state also present? B. If the tank contains butane,
asked by Lauren 
physics
A man stands on the roof of a 10.0 tall building and throws a rock with a velocity of magnitude 24.0 at an angle of 42.0 above the horizontal. You can ignore air resistance. Calculate the magnitude of the velocity of the rock just before it strikes the
asked by Ava 
american goverment
which of the following native american were Sioux leadrs except, geronimo, red cloud, crazy horse, or sitting bull.
asked by lajade 
English
Need a essay on Boo Radley from to Kill a mockingbird Help meeeeeeeeeeeeeeeeeee plz
asked by Anonymous 
cosecant/secant
the formula for secant is: 1/x the forumula for cosecant is: 1/y for the coordinates (negative square root of 2/2, square root of 2/2) how come the cosecant is square root of 2 and the secant is negative square root of 2? for my cosecant I got negative
asked by Jen 
math
When a figure is drawn in quadrant 2, and you reflect it over the x axis, do you reflect in quadrant 1 or four?
asked by mark 
math
Simplify the expression 6x x 2x^3 x 3x^2y^2/3x^3 x x^4y. I'm confused. The only thing I did was simplify 3x^2y^2/3x^3 to x^1y^2. I need help with the problem.
asked by mark 
math
Consider the following binomials. A=(x^2+5x) B=(6x+30) Part 1: Factor each binomial by finding the GCF. Then, add the two factored binomials to make a single expression. Part 2: Now add the original forms of binomial A and B together to make a trinomial.
asked by mark 
Algebra Sq Rt
to multiply the sq rt of 3 cubed by the sq rt of 9 cubed I first need to factor them? So 9 3 times =729? and 3, 3 times is 9. Then multiply the two? to get 6561? Or Do I multiply 3 times 9 for 27 and add the 3+3 on the left of the radicand for 6? Is my
asked by Micah 
grammar
does this word make sense in this sentence? domestic The minister saw from the statistics that imported goods were cutting into the domestic market.
asked by Mackenzie 
Math
What is the reciprocal of 5 3/4?
asked by greatdanelola 
Social Studies
How would you debate  'That social injustice justifies violent action?" Negative, speaker 2. What's some points I could use please? I have plenty of examples.
asked by Pingu Head 
Calculus
I'm having trouble with this one. Problem: Find the equations for the planes parallel to x+2y2z=1 and two units away from it.
asked by Joseph 
math(EASY BUT CHECKING)
for a spinner numbered one to ten, all outcomes are equally likely. What is the probability of getting a factor of six? I thought it might be 4/10 or 2/5 because i think a factor is a number that can go into another one. I often confuse those with
asked by lindsey 
grammar
how do you spell colesseum? i am not sure if i am right
asked by Mackenzie 
math help
please show me how to do this I am very lost I keep getting a wierd answer like 16/9 something like that please help me Solve the system by addition. 4x+6y = 9,8x3y = 7
asked by lost and confused 
Algebra Sq Rt
I have a sq rt sign with a 3 on the left side. That means I'm looking for the cube of the number inside the square root? That number is 189xto the 8th power. So I multiply 189x 8 times before I find the cube or do I find the cube of 189?
asked by Micah 
religion
why do sikhs share out sweets with friends and family?
asked by connor 
aiu
What adjustments will need to be made to your business as a result of this?
asked by Anonymous 
Algebra multiplying sq rt
I need to use rational exponents to write the answer to: the cube root of x times the 4 root of 7x. there is a rule when the numbers on the radicand are different, yes?
asked by Micah 
math
Consider the following binomials. A=(x^2+5x) B=(6x+30) Part 1: Factor each binomial by finding the GCF. Then, add the two factored binomials to make a single expression. Part 2: Now add the original forms of binomial A and B together to make a trinomial.
asked by mark 
algebra
Would the problem (xz^3)^4 be simplified to 1/x4z12?
asked by becky 
Social Studies
I need to know what the 57 US jurisdictions are and their 56 capitals. Thanks.
asked by Christian 
algebra
If I add x^5+5x^4 is the answer 6x^9?
asked by becky 
aiu
Benefits and drawbacks for your business as a result of their membership in MERCOSUR?
asked by Anonymous 
grammar
does this word make sense in the sentence? flustered The speaker went right on with his speech, in no way flusterd or disturbed by the jeers and catcalls of a few rowdy hecklers.
asked by Mackenzie 
Math
What is 15 1/3 divided by 3 2/7 in its simplist form.
asked by greatdanelola 
Math
what is the perimeter of a rectangle if the length is 5/12 and the width is 1/2
asked by greatdanelola 
geography
in 1776 how long did it take a ship to get from france to america?
asked by khrystal 
Chemistry
Besides the ideal gas law what is other methods to calculate the molecular mass of a substance.
asked by Susi 
Math
How do you find the height of a triangle on a coordinate grid?
asked by Makayla 
hrm
How do I design a reward system ( an employee reward system)
asked by Dehlia Silva 
aiu
Benefits and drawbacks for the country of Venezuela as a result of their membership in MERCOSUR?
asked by Anonymous 
social studies
how did the civil war end? who surrendered
asked by Bri