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August 20, 2014

Search: chemistry- some help plzz totally lost on this one

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chemistry- some help plzz totally lost on this one
Imagine that you are in chemistry lab and need to make 1.00 L of a solution with a pH of 2.70. You have in front of you * 100 mL of 7.00×10−2 M HCl * 100 mL of 5.00×10−2 M NaOH, and * plenty of distilled water. You start to add HCl to a beaker of water when someone...
July 13, 2009 by DrFunk

Chemisty
Im totally lost on how to do redox reactions. Can any one show me the steps on how to do MnO4-1 +C7H60 => Mn2 +c7H6O2? im trying to study for a test and im totally lost. thanks in advanced.
May 31, 2010 by Kelly

Math
Can some one explain these to me i need the factors. i am totally lost. thanks x^2+x-6 x^2+7x+10 x^2+5x+6 x^2+2xy+15y^2
March 31, 2008 by joyce

Physics-Totally lost
I'm totally lost on this one- the earth is surrounded by an electric field with a strenth of 100 N/C at the surface. Its electric properties are the same as a point charge located at its center. How would the gravatational force and electrical force compare foor an electron at...
April 7, 2011 by Rafaela

Physics-Please help!
I don't want someone to do this for me-I'm just totally lost and don't even know where to start-I'm totally lost on this one- the earth is surrounded by an electric field with a strenth of 100 N/C at the surface. Its electric properties are the same as a point charge located ...
April 7, 2011 by Rafaela

Algebra 2
Hey I am working on math homework that involves "Standard Form to Vertex Form by Averaging." My class is just starting to learn this today, but I am totally lost still on what to do. Can you please help? The formula for this is y=a(x - h)^2 + k the h is the x-value vertex and ...
February 8, 2010 by Tessa

English comp
I am trying to turn a poem into prose and I am totally lost. Can some help me if I send them the poem?
April 2, 2013 by Rhonda

ALG@ NEED HELP PLEASE
Explain how to factor the following trinomials forms: x2 + bx + c and ax2 + bx + c. I am totally lost still I read and read and the concept is lost in my head. Can someone please help me? I know there is more than one way to Factor this.
March 1, 2012 by KAYG

Algebra
|3a 2z 5m| |2k 5 6| I am trying this one but am totally lost. You gave the answer to one earlier. If I am in need of the value of the variables z Is this answer z=2
December 17, 2009 by mike

math
how to find the LCD for 11x/yz^2, 8x/y^2z? I know the answer is yz^2 but how do you get that. can you plzz plzz explain..... this it is really important..... thnx ...... a lot..
July 6, 2009 by gagan

College Chemistry-Please help me
I need to find the ionic equation of: 3Ba(OH)2(aq)+2H3PO4(aq)->Ba3(PO4)2+6H20(l) I'm totally lost on this question
October 4, 2010 by KELLY

math
can someone plzz tell me whichone is true. just but down the number when u answer back plzz & thank you 1. 14+(-25)> -50= 2. 20*10^3 3. 3/4 + 3/4> 1 4. 6^2=2^6 5. -21-(-39)=60 6. 19 7. 11*11*11 = 33^3 8. 38<7^2-(-20) 9.-5=20+(-25) PLEASE HELP ME!!!!
February 24, 2011 by tatiana

chemistry
Ned to know the similarities between the numbers 1,4,6,8,9,10,12,14,15,16,27,39,49,56,57,58,70 the question was these numbers are or are not something??? I'm totally lost.
November 9, 2009 by Ryan

Chemistry
I'm totally lost! Help please!: Determine the energy gained when converting 500.0 grams of steam at 100.0 degrees C to 120 degrees C.
October 6, 2007 by Alyssa

Chemistry
If the Ka of a monoprotic weak acid is 4.5x10^-6 what is the pH of a .10M solution of this acid. I dont even know how to start this problem, I'm totally lost please help!
July 13, 2013 by Molly B

Physics
How much torque is applied to a bicycle wheel whose radius is 0.40 m in order to accelerate the 15 kg bike and 78 kg rider at a rate of 3.4 m/s^2? I'm totally lost on this one. Which equation do I need to use?
January 8, 2008 by Lindsay

Algebra 2
I am totally lost! (3x^4--8x^2 -3x-3) / (x^2-3)
March 1, 2011 by Paige

Chemistry
Consider the molecular level representation of a gas There are: (a picture) 6 blue dots 5 orange dots 3 green dots (i think they are the diatomic one, because it is pairs) If the partial pressure of the diatomic gas is .750, what is the total temperature? I am totally lost, ...
December 9, 2012 by Angela

Algebra Recursive sequence help
I need some help as I'm totally lost! I need to find the first five terms of each recursive sequence. The n-1 on the problem shows it below the a. 1. A1=3 An=2a n-1- 3 2. C1=64, C2=32 Cn= Cn-2 - Cn-1/2
March 31, 2013 by Kris

algebra
10-5=3y 2x-3y=1 i am totally lost help please
October 26, 2008 by Danny

college chemistry
I need to know how to calculate the value of the equilibrium constant for the reaction of zinc metal in a solution of silver nitrate at 25 degrees c. I am totally lost and do not even know if I have all the data I need. Help!
November 28, 2009 by angela

Algebra 1
Help me work these right please, I'm totally lost?
June 20, 2010 by Sam R.

help plzz
can some 1 help wit my synonym question plz
March 7, 2010 by beonca

week 7 math 116 checkpoint
totally lost need help
April 16, 2011 by Gracie

Math 116a
7X+4>-13 or 9x+4>-23 The solution of the compound inequality is ? I am totally lost!!!!!!!!
September 22, 2011 by katie

Math 116 A
7X+4>-13 or 9x+4>-23 The solution of the compound inequality is ? I am totally lost!!!!!!!!
September 22, 2011 by katie

Programming
Hi. I am taking a computer programming class (C++). I need some help on some programs. I tried going to my teacher - he was of no help and there are no tutors. I have a lot of code, but I'm having problems. I looked online for help, but they're using different methods that I ...
May 21, 2007 by Jay

Calculus
Integrate dx/xlnx. What method am I supposed to use? I'm totally lost.
January 2, 2012 by W

College math
(-30a^14b^8/10a^17b^-2)totally lost on me??
September 29, 2012 by Angela

Chemistry
how mant moles are in 1.30g of (NH4)2SO4? answer in units of mol. today our teacher briefly went over this and doing my homework i totally lost it. and cant remember for the life of me what to do could you please help me and show me step by step what to do. thanks
March 18, 2009 by Leona

Mathematics
(2x)^2(3x)^3=3.548E82 How do I even do this type of math problem am just totally lost here????
February 27, 2008 by Josh

Science
I need help with a poster for radon and i need some ideas i cant think of anything. If u can can somebody help me. It's due by March 12, 2012. And plzz if can u give me some ideas. Thx. =)
March 8, 2012 by Portia

algebra
im totally lost with my homework this is all gibberish to me. What are the coordinates of the vertex of the graph of the quadratic function y= -x^2 -1? A.(0,-1) B.(0,2) C.(-1,-1) D.(-1,0)
May 21, 2008 by Brandy

math
the function f is defined: f(x)= x+3 if -2<=x<1 9 if x=1 -x+2 if x>1 a. find the domain b. locate the intercepts I am totally lost, can someone please help me with this?
March 26, 2013 by mercedes

chemistry
I am totally lost on this one. 1,2,2-trimethylcyclopentane I think I have to draw the cyclopentane shape with the single bond going straight CH3 and I am lost from there. Draw the cyclopentane as a 5-cornered box. C-C |  | C  C  \  /   C Start numbering...
March 29, 2007 by Kellie

Math (Algebra 3)
A population of ladybugs rapidly multiplies so that the population t days from now is given by A(t) = 3000e^(.01t). How many ladybugs are present now? How many will there be after a week? im totally lost on this one! Where do i begin and where do i end?!
April 2, 2008 by John

algebra
I am totally lost on how to solve g(x)=2x^2+3x-1 to find the y and x-intercepts. This is what I have so far, but I don't know if I am on the right track. And if so what would be next? g(x)=2x^2+3x-1 =2x^2+3x -1 =(2x^2+3+6) +3-1
April 28, 2010 by dani

social studies
plzz HELP me with my social studies i need to get this one done within 10 min plzz 1. Which word most closely means civility? (1 point) respect discipline patriotism liberty 2. Civic-mindedness most encourages people to (1 point) speak their minds about issues honestly. treat ...
January 2, 2013 by peace

math
Graph the function f(x)=6-1/(x+4)^2 using transformations. State: a.the domain b.the range c.the asymptotes i do not get this at all, i am totally lost! please help!!!
April 15, 2013 by jenny

Need some clarification...... plzz
I am having a bit of trouble answering this question.... DO you mind giving a brief explanation of what it means and, if possible, some hints on possible answers? In what ways did the indigenous societies and the revolution in Haiti overcome or challenge colonial rule?
October 18, 2008 by Martha

Physics
A sample of charcoal from an archaeological site contains 55 g of carbon and decays at a rate of .877 Bq. How old is it? ok I am totally lost, I don't know where to start
May 5, 2008 by J

physics
A sample of charcoal from an archaeological site contains 55 g of carbon and decays at a rate of .877 Bq. How old is it? ok I am totally lost, I don't know where to start
May 5, 2008 by J

algebra
Verify that the functions f and g are inverses of each other by showing f(g(x)) = x and g(f(x)) = x f(x) = x^3 + 5 g(x) = 3sqrtx-5 ( 3 is inside check mark on the sqrt. I am sooo totally lost on these!
December 18, 2011 by Alissa

12th grade - English (World Mythology)
The website is: zarathushtra . com /z/gatha/dji/forward . htm What is Tagore’s main argument? Find a sentence or two that make up Tagore’s thesis statement and cite it here. What distinction does Tagore make between “blind obedience” and “the path of freedom?” Tagore was an ...
June 16, 2009 by Julie

no one's here to help us!!! -.-
help us!!! plzz btw this is not a question :P
April 6, 2014 by anonymous

math
how do i put fractions in order from least to greatest? it's on my homework and i am totally lost. i forgot because i learned this like 2-3 years ago. please help me!
April 13, 2010 by taylor

11th grade Physics
An open pipe 0.40m in length is placed vertically in a cylindrical bucket having a bottom area of 0.10 m^2. Water is poured into the bucket until a sounding tuning fork of frequency 440 Hz, placed over the pipe, produces resonance. Find the mass of water in the bucket at this ...
November 2, 2010 by Garry

Chemistry
Suppose a piece of lead with a mass of 14.9g at a temperature of 92.5 degrees C is dropped into an insulated container of water. The mass of water is 165g and its temperature before adding the lead is 20.0 degrees C. What is the final temperature of the system. Following an ...
October 8, 2007 by Lucy

biology
okay im totally lost here, the question i need to answer is explain why codons can't consist of two bases instead of three for each amino acid. im so confused..help!
January 6, 2008 by Kaitlyn

Algebra 2
Hey I am working on math homework that involves "Standard Form to Vertex Form by Averaging." My class is just starting to learn this today, but I am totally lost still on what to do. Can you please help? The formula for this is y=a(x - h)^2 + k the h is the x-value vertex and ...
February 8, 2010 by Tessa

science
i have to make a model on global warming(a 3d model)can u plzz...give some ideas.
June 13, 2008 by shweta

Algebra
Help please-I'm totally lost- How would I simplify (2x^5 y^4 z^3/x^-1 y^5 z^5)^-1 Thank you for any help you can give me-I'm so stuck for my homeowrk tonight. I know I can bring up the negatives to top and negative to bottom to make them positive but besides that-I don't get it
November 14, 2011 by Mattie

Algebra
Help please-I'm totally lost- How would I simplify (2x^5 y^4 z^3/x^-1 y^5 z^5)^-1 Thank you for any help you can give me-I'm so stuck for my homeworkk tonight. I know I can bring up the negatives to top and negative to bottom to make them positive but besides that-I don't get...
November 14, 2011 by Mattie

algebra
I have no idea totally lost haven't done any type of math in almost 30 years f(x)= x^4-x^3-7x^2+x+6 all the real roots are bounded by -3 and 4. Explain why these are the upper and lower bounds
June 24, 2013 by student

Fin 200 Intro to Finance
I have to make a statement of cash flow for the Crosby Corp from our week 1 assignment but I am totally lost, i just don't understand how to accomplish this.
May 22, 2010 by Belle

alegbra
Solve by the subsitution method. 2x+4y=-6 -3x+y=23 y=23+3x 2x +4(23+3x)=-6 2x +92 +12 x =-6 x=7 y= 23 I am lost after this could some one help me
April 2, 2009 by Jonnie

Algebra II
find An if n = 2 of the arithmetic sequence with An = 14n - 3 i'm lost can some one help
April 18, 2011 by anonymous

Physics
For non-ideal oscillators (such as a real pendulum) energy is lost and the amplitude (which is the maximum displacement) is no longer constant but also decreases with time. How fast the energy lost is described by a TIME CONSTANT, τ = m/b. Typically after ONE time ...
January 31, 2014 by Ike

Chemistry
Is heat lost in heating water and ice? No. Entropy is lost, but heat energy is not lost.
December 3, 2006 by Lisa

plzz help me
a 140 pund student burns 5.4 calories per minute while playing tennis .after 60 minutes how many calories has the student burned?? also sam drives at a constant rate of 60 miles per hour . how many hours will it take him to drive 210 miles? express your answer as a mixed ...
September 25, 2008 by bamawam

English
Determine the rhythm and meter of each set. "Workers earn it. Spendthrifts burn it. Bankers lend it Women spend it. Forgers fake it. Taxes take it. Dying leave it. Heirs recieve it. Thrifty save it. Misers crave it. Robbers seize it. Rich increase it. Gamblers lose it. I could...
October 22, 2007 by Christian

statistics
Lost Luggage in Airlines Transportation officials reported that 8.25 out of every 1000 airline passengers lost luggage during their travels last year. If we randomly select 400 airline passengers, what is the probability that 5 lost some luggage?
March 31, 2012 by lela

8th grade
Laura is training her pet white rabbit, Sugar, to climb up a flight of 25 steps. Sugar can hop up one or two steps at a time. She never hops back down, only up. How many different ways can Sugar hop up the flight of steps? PLEASE HELP!!!! I'M TOTALLY LOST!!!
January 18, 2010 by Lola

Algebra II
Please help-I'm totally lost- What is the equation of the ellipse with foci(-10,0), (10,0) and co-vertices (0,-3),(0,3) x^2/109 + y^2/9 = 1 X62/100 + y^2/9 = 1 Please show me the steps because I have others to do and I'm really stuck
March 28, 2011 by Shiela

research
what is the research problem discussed in the article: UNDER SURVEILLANCE: AN EMPIRICAL TEST OF THE EFFECTIVENESS AND CONSEQUENCES OF ELECTRONIC MONITORING? I have read this and I am totally lost. Please help
April 27, 2014 by jo

geometry
I totally don't understand Vectors How do you describe a vector as an ordered pair? on the x and Y where they cross it is 41 degrees and goes to the left up to the y 77 I am totally confused Help
December 15, 2011 by Cindy

English
I have to analyze the use of diction and syntax in three authors specific works, but I'm unsure of how to anazlyze/explain these, exactly. I know that diction is the author's word choice and syntax is sentence structure, but I don't know how to pinpoint one's diction and ...
October 3, 2011 by Soh

algebra 1 help
I am having a hard time understanding these problems would some one please explain what i need to do the teacher is asking me for points on the graph i am totally confused 1)Graph the inequality. y > –5 2)Solve the following system of linear inequalities by graphing.
May 3, 2007 by allen

Chemistry
Uhmmm.. I am totally lost! Help? There are 7.0 x 10^6 red blood cells in 1.0 mm^3 of blood. How many red blood cells are in 1 L of blood?
October 6, 2012 by Kayla

organic cehmistry
I am totally lost on the subject of Fischer projection. I have no clue on where to begin solving : (S) 3-chloro-1-penten-4-yne http://www.mhhe.com/physsci/chemistry/carey/student/olc/ch07projections.html
April 7, 2007 by Becky

Math
Let (2x-12) degrees represent the measure of an acute angle. What are the possible values of x? So lost can some one please help me
September 16, 2013 by Anonymous

maths
At a fun fair, each mother there had brought 2 children. At the end of the day, it was found that 36 mothers had lost one or both of their children and 62 children had lost their mothers. How many mothers lost only one of their children and how many mothers lost both of their ...
September 2, 2013 by coran

statistics
this is to mathmate...this is jimmy and you answered by questions on random sample and probability (better business bureau question)..i greatly appreciate your help but i do not understand part b and d answers..i am totally lost on this whole question
July 22, 2012 by jimmy

Algebra
Choose the equivalent expression(3h^-2j^3k)^2(hj^-5k^3)^-2 The signs that look like minuses are negative signs Answers: 3h^-6j^16K^-4 9h^-2j^5j^16k^-4 9h^-6j^-4k^-4 Please help-I'm totally lost
October 18, 2010 by Annie

plzz help me
2. As you read The Cay, you will learn about people and their prejudices. as you read the cay Why do you think there would be feelings of hostility toward those of other races in Curacao? 3. Name 6 natural resources in Curacao. 4What is the capital of Curacao? Describe where ...
January 18, 2013 by peace

Chemistry
Each Rolaid tablet contains 550mg of calcium carbonate and 110mg of magnesium hydroxide. Kroger Extra Strength antacid tablets contain 750mg of calcium carbonate per tablet. What is the neutralizing ability per gram for each tablet? Your answer should be in units of mol/g. I'm...
March 15, 2010 by Anonymous

Communication Language Studies
Supply rhyme (Given a word "fish", offering "dish") Totally confused, may be it is just me, but I am not understanding what is asked for here? A rhyme? If so, referring to those words? If so, I am stil lost Please help. Thanks!
March 20, 2010 by Audrey

Science only one question...help plzz!
True or False: Plants continue to grow throughout their lives by producing new plant material. THANK YOU!
February 11, 2014 by Hi!

Physics
Upward rays of light in water toward the water-air boundary at angles greater than 48 degreees to the normal are totally reflected. No rays beyond 48 degrees refract outside. How about the reverse? Is there an angle at which light rays in air meeting the air-water boundary ...
March 3, 2008 by Mike

ethic
I am having trouble understanding what health care administrative sensitivity is. I read the in conjunction with the question, but I am lost...totally. the test book we are using is health care ethics, principles and problems
June 6, 2011 by dot

pre calculus
Find the inverse of the following function. Find the domain, range, and asymptotes of each function. Graph both functions on the same coordinate plane. F(x)= ln(8-x) I am totally lost, somebody please help????
April 24, 2013 by trish

vocabulary
what does frustrastion mean? excuss my spelling. Frustration is the feeling that you get when you try to do something and can't. You may feel frustration when you can't figure out how to do a math problem. You may feel frustration when you're shooting baskets and the ball ...
August 22, 2005 by sam

pre calculus
1.)A utility company has the following rate schedule for natural gas usage in a city’s business district: Monthly service charge: $8.80 Per therm service charge 1st 25 therms : $0.6686/therm Over 25 therms: $0.85870/therm (a) What is the charge for using 25 therms in one month...
April 2, 2013 by alexis

Geology
One of the curious things about the loss of life in regions surrounding the Bay of Bengal is that some 38,195 lives were lost in Sri Lanka, whereas only 2 lives were lost in Bangladesh. How could this be? It certainly couldn’t be the difference in distance. Hint: To answer ...
February 27, 2010 by Anonymous

PSYCHOLOGY HELP PLEASE!!
Research on interpersonal attraction has shown that people will be more attracted to each other if: a. they have totally opposite beliefs and personalities. b. their backgrounds, interests, and values are very similar. c. one of them is physically attractive and the other is ...
December 1, 2011 by Anonymous

Chemistry
Hi, I am totally confused with this chemistry because none of this stuff is in my book, so I come to the great ones with my question: 1. Can you show me how to convert celsius to farenheit (please show me an example and your work so I can get it please) 2. farenheit to kelvin...
September 24, 2006 by Confused considerable

Math
x=-6±√(6^2-4(1)(4)/(2(1)) x=(-6±2√5)/2 Can some one help explain how it came to 2sqr 5 I am lost
November 4, 2009 by Anonymous

Chemistry
Xenon is one of the noble gases, and is generally quite unreactive.in fact,it was long believed that all the noble gases were totally unable to form compounds.It came as quite a surprise,therefore,when it was discovered that some of its compounds could be made.A chemical ...
July 12, 2011 by Gift

english
. Identify which one of the following sentences contains an unnecessary comma. Please correct the error and explain why the correction is necessary. a. I must have been completely absorbed in my work, because I totally forgot about the meeting. b. Because I became completely ...
October 15, 2011 by Aran

Eng095
Identify which one of the following sentences contains an unnecessary comma. Please correct the error and explain why the correction is necessary. A. I must have been completely absorbed in my work, because I totally forgot about the meeting. B. Because I became completely ...
October 27, 2011 by Yonaa

english
Identify which one of the following sentences contains an unnecessary comma. Please correct the error and explain why the correction is necessary. a. I must have been completely absorbed in my work, because I totally forgot about the meeting. b. Because I became completely ...
October 5, 2012 by cathy

chem
Hi the following comes from my first homework assignment in AP Chemistry. I am totally lost on this question and don't know where to start. Thanks a lot in advance!!!!! A 0.1247 g sample of ascorbic acid, Vitamin C, was burned in a carbon-hydrogen combustion apparatus to ...
September 26, 2007 by manny

Biomass increase !
Can anyone help please, Can anyone help me to calculate the increase in biomass in each of the three groups, Field mice Ingested 107Kj m-2 y-1 and lost 105 kj m-2 y-1 in respiration & faeces Grasshoppers ingested 444 kj and lost 374.3 kj and small birds ate seeds 60 kj and ...
December 30, 2006 by Freddo

HCA 220
I need help with an assignment that is due today and I am totally lost. All I need is for someone to point me in the right direction. For example, The approach is body planes and directions; what is the approach and how might the approach be used. Thanks!
March 30, 2008 by CD

Physics
Please help- A small fish is dropped by a pelican that is rising steadily at 0.50 m/s. How far below the pelican is the fish after 2.5 s? Answers. 61m 29.3 30.6 1.1m I just started school and I'm totally lost-If someone could explain formula to me I'd really appreaciate it ...
September 5, 2010 by Melinda

chemistry
2 Al + 3 S --> Al2S3 In an experiment 10.0 g Al is combined with 15.0 g S. If the reaction continues until one reactant is totally consumed, which reactant would be in excess and how many grams would be unreacted?
November 4, 2012 by Sheree'

NVQ level 3 buisness admin
ok im really struggling on the questions on unit 314 hy the hell is there no question marks i have to anwser them like questions,its confusing me?? please can anyone shed a light over my way please.x cheers ema We don't have access to NVQ questions. Please post one or two of ...
June 12, 2006 by emma

chemistry
suppose you heat a hydrate too quickly and some of it was lost as it spattered out of the container. Explain how this would affect the calculated percent of mass and the chmical formula
November 18, 2009 by sara

math
Jen, I will attempt to write the others out. #3)ADD: -57 + (-22) I got -79 #4)Subtract -2.3-(-8.8) I got -6.5 #7)perform indicated operation: -21 - (-9) I tried to underline ----------- -21 - (-21) I got -12 over o or undfined #8)Multiply:(4){-3/2} This one lost me #9) place ...
July 18, 2010 by barbara

diversity?
I have to write an autobiographical research paper on race in my community. 1. The paper must have an introduction & thesis statement. 2. Body supporting evidence and in text citations. 3. conclusion. 4. three references. I am totally lost and don't know how or where to start...
November 23, 2007 by Joesph

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