Questions Asked on
May 9, 2008

chem
A 4.55L sample of water contains .115g of sodium ions. Determine the concentration of sodium ions in ppm if the density of the solutions is 1.00g/mL. Ok so ppm=mass of solute/mass of solution *10^6 so we have the mass of the solute .115g and for the
asked by natash 
Chemistry
For the following electrochemical cell: Fe(s) / Fe2+(aq) // MnO4–(aq) Mn2+(aq) / Pt(s) Which letter corresponds to the correct balanced chemical equation in an acidic solution? A. 5Fe(s) + 16H+(aq) + 2MnO4–(aq)> 2Mn2+(aq) + 8H2O(l) + 5Fe2+(aq) B.
asked by Amy 
trig
1. 3cot^2 (x)  1 = 0 My answer: pi/3, 2pi/3, 4pi/3, 5pi/3 2. 4cos^2 (x)  1 = 0 My answer: pi/3, 2pi/3, 5pi/3, 4pi/3 3. 2sin (x) + csc (x) = 0 My answer: unknown lol i got to the part: sin^2 (x) = 1/2 4. 4sin^3 (x) + 2sin^2 (x)  2sin^2 (x) = 1
asked by Wanda 
chemistry
Why does the equivalence point occur at different pH values for the four titration studied? the four titrations were: 1. HCL with NaOH 2.HC2H3O2 with NaOH 3. HCl with NH4OH 4. HC2H3O2 with NHOH Okay so equivalence point is when the number of moles of acids
asked by Amy 
chemistry
Draw three repeating units of the condensation polymer made from ethanedioic acid and ethanediol. if anyone has a weblink that illustrates this may you please send it?
asked by Mable 
physics  oscillations
A mass m is at rest on the end of a spring of spring constant k. At t = 0 it is given an impulse J by a hammer. Write the formula for the subsequent motion in terms of m, k, J, and t. Assume x=0 at t=0. Thanks, nik
asked by Nik 
physics  oscillations
A mass m is at rest on the end of a spring of spring constant k. At t = 0 it is given an impulse J by a hammer. Write the formula for the subsequent motion in terms of m, k, J, and t. Assume x=0 at t=0. Thanks, nik
asked by Nik 
CHEM URGENT PLZ
1.Which of these substances has bent molecular geometry around the oxygen atom? Multiple correct answer may apply. a.water b.isopropyl alcohol (rubbing alcohol)** c.acetone** d.diethyl ether. 2.Which of these species are polar? Ignore slightly polar CH
asked by Anita 
accounting
BDH Corporation, which makes only one product, Kisty, has the following information available for the coming year. BDH expects sales to be 30,000 units at $50 per unit. The current inventory of Kisty is 3,000 units. BDH wants an ending inventory of 3,500
asked by mh 
calc
If 4x2+3x+xy=2 and y(2)=–10 , find y'(2) by implicit differentiation. i keep getting the wrong answer for this problem evn when plugging 2 in for y.
asked by sara 
Spanish
Can you help me with this. I really need help. Please correct me If any mistakes: In the blanks, I have to copy the verb(familiar and polite commands) and attach the approppiate pronoun. 1. Lleve estos libros al otro cuatro: = Llevelos estos libros al otro
asked by John 
Spanish
Please correct my work please: This is what I'm working on: Command form(imperative mood)negative familiar/polite. I have to change the following affirmative commands to the negative form. (write the word no, the object pronoun(s), and the negative command
asked by John 
Health Care
I am not seeing anywhere in my text how I would provide this answer could someone point me in the correct direction... It states this... Compose a list identifying the major components of health communication. Who is involved in each component? How does
asked by Ann 
accounting
Here is another one: BDH Corporation, which makes only one product, Kisty, has the following information available for the coming year. BDH expects sales to be 30,000 units at $50 per unit. The current inventory of Kisty is 3,000 units. BDH wants an ending
asked by mh 
comtemporary business Communication
What are the main formatting differences between the memo and the academic paper? In what ways do audience, purpose, tone, and structure affect the formatting of the memo and the paper?
asked by Jaz 
math
Use implicit differentiation to find the equation of the tangent line to the curve xy3+xy=14 at the point (7,1) . The equation of this tangent line can be written in the form y=mx+b i don't seem to no how to find m or b
asked by sam 
statistics
If X is a random variable which is normally distributed with a mean of 100, then P(X100) True or False?
asked by Leslie 
statistics
A maker of tires for cars has a multitude of data to support the fact that the lifetime of their tires follows a normal distribution with a mean of 42,100 miles and a standard deviation of 2,510 miles. Find the probability that a randomly selected tire
asked by Tanya 
calc
The equation of the tangent line to y=f(x) at a=2 can be written in the form y=mx+b where f(x) =4sinx/4sinx+6cosx i already got 3/2 for m but i cant seem to find out how to get the value of b?
asked by sonia 
Math
I can't solve this problem 4x7=2x+11 x= ? I don't know how to do it! Help!
asked by Taylor 
Math Fractions
Posted by Mary Mac on Friday, May 9, 2008 at 10:01am. I have this fraction: 6 2/9 + 1 3/4  3 5/6= Okay First I changed the mixed numbers into improper fractions. I got this: 56/9 + 7/4 + 23/6 Then I thought you have to find the least common denominator,
asked by Mary Mac 
math
Kip and Celia began working for the same company in 1997. Celia earned $19,000 per year, and Kip earned $16,000 per year. Each year Kip received a $1,500 raise and celia recived a $1,000 raise. a. In what year will they earn the same amount of money. b.
asked by cerenity 
fundamentals of policing
Post a 350 to 700word response, describing the duties, functions, and responsibilities of local and state law enforcement agencies and explain the major differences between the two. Then, identify three federal law enforcement agencies. Describe their
asked by me 
Spanish
It would be nice if someone could help me with this. This is what I'm working on: Command form(imperative mood)plural I'm filling in the blanks with the polite plural command of the verb in parentheses:Ok. Now I actually did the work. Just please correct
asked by John 
chem
What functional group(s) must be present in a monomer of a condensation reaction.
asked by 12mr5 
psy  please proofread
Below is your Week 5 Day 7 CheckPoint: Persuasion & Conformity Scenario Assignment. You are to write a 200 to 300word critique of the response. Include a summary of the decision stated in your assigned response, whether or not this response has made you
asked by rose  Ms. Sue 
math
what 3 bills can you use to make $16 without using tens or coins?
asked by Anonymous 
Science
Identify the most important way heat is lost from the body during exercise? and these are the choices Evaporation Conduction Radiation Convection
asked by kai 
physics
How would you do this? The K is 25.0 N/M The spring's max amount of elastic potential energy?
asked by Tri 
science
In general, populations have the ability to increase exponentially, but why do you think that most populations are fairly constant in size?
asked by bobby 
comtemporary business Communication
what does APA on microsoftword Word do ?
asked by Jaz 
chemistry
I need to calculate the Ka of the acetic acid from two titration curves involving acetic acid. Then report the % error in each how do i go about this? what values do i need to know?
asked by Amy 
trig
how do you solve cot theta divided by csc theta is equal to cos theta?
asked by mak 
Math/Fractions
I have this fraction: 6 2/9 + 1 3/4  3 5/6= Okay First I changed the mixed numbers into improper fractions. I got this: 56/9 + 7/4 + 23/6 Then I thought you have to find the least common denominator, which for 9,4, and 6 would be 36. Then I muliplied the
asked by Mary Mac 
trigonometry word problems
A rectangle has a length of 19 cm, and a width of 16 cm. What is the length of its diagonal?
asked by shanica 
Diabetes
Can someone please name 2 methods of treatment for diabetes, please? Danke!
asked by Mylie 
Economics
A. How can a tax on commodity be shifted forwards and backwards? B. What determines the amount of forward shifting that will occur?
asked by Ryan 
Calculus  Integration
I came across this problem in my homework, and I was wondering if partial fractions would be rational for this problem. Int [(2x)/((x^2)^2)]dx If I don't use partial fractions, what would I use?
asked by Sean 
comtemporary business Communication
Between APA and MLA which is the most important Thank You
asked by Jaz 
chemistry
Construct the following using molecules of your choice: a) a polyester and b) a polyamide. Each drawing should have four monomers and should be original in its structure. Your polymers can not be biochemical (carbohydrate, lipid, protein, etc.). Identify
asked by Mable 
chemistry
Suggest a type of reaction and the conditions required to breakdown polyamides into their monomers.
asked by Mable 
psy = revised
My response The conformity response has a lot of valid points. Donnie is in a band, is a musician, and the music environment that he is exposed to day in and day out just bring a lot of stress. The people in this industry tend to be exposed to a lot of
asked by rose Ms. sue 
Spanish
How exactly will I do this? I seriously need help yet,I can't even attempt this. My teacher hasn't taught me this stuff as yet. So help would be appreciated. This is what I'm working on: Command form(imperative mood)negative familiar/polite. I have to
asked by John 
science
what discoveries have strengthened our understanding of evoultion?
asked by Anonymous 
physics
How would you do this? The K is 25.0 N/M The spring's max amount of elastic potential energy?
asked by Tri 
french
How do you say "it is always on time"...il est toujours a l'heure?
asked by french 
office practices/ medical
I was wondering if someone please help me with this question ? It does seem to make much sense to me. Open shelves are recommended for highvolume file rooms. Which of the following is a possible disadvantage of openshelf files ? A increased operational
asked by Kiley 
office practices/ medical
please check my answer thanks True or False A company that provides comprehensive health care services on a prepayment basis to voluntarily enrolled participants is called HMO I said True
asked by Kiley 
V A Hospital
please check my answer thanks so much for your help True of False The V A hospital is most likely to use the Social Security Number as a medical record number in its filing system I said True
asked by Anonymous 
office practices/ medical
please check my answer thank you for all of your help in advance. If you know of any websites that may be helpful that would be great. True or False When medical records are moved forward to the most recent assigned medical record number a gap is
asked by Kiley 
cartoon
can anyone find me a cartoon about no alcohol and depressents. I loked on google but none of them make sense to make that much.
asked by maggie r 
management
Is task centeres leadership more effective than employee centered leadership?
asked by patti 
math
.25($118,250.00) c) How much money will rent and utilities cost
asked by pat 
Math
How exactly would I solve these problems? Write a function g(x)with the given transformations of f(x)=x to the 2 power. A. Down 2 B. reflection about the xaxis My teacher never taught me this, and my exam is within the next 2 weeks.
asked by John 
PHI
When a person makes a contribution to society, how does it affect us long term?
asked by deshaun 
Medicare Part B
Please check my answer True or False Medicare part B involves supplemental medical insurance I said True
asked by Kiley 
chemistry
Suggest a type of reaction and the conditions required to breakdown polyamides into their monomers.
asked by Mable 
pschology
what is the survey method and how is it applied
asked by me 
science
what makes the moon shine? what is the normal temprature of ourbody?
asked by mansi 
comtemporary business Communication
What does the MLA do and what does it mean?
asked by Jaz 
simplyfying expressions (trig)
can anyone tell me how to do this? thanks! (sin (x) / 1 + cos (x) ) + ( cot (x) / 1 + cos (x) )
asked by Mindy 
graphs
can someone help em find a graph showing current abuses or deaths of tranquilizers or barbiturates (depressants)
asked by jack 
math
How do I do compound probability
asked by bandit5571