# chemistry- some help plzz totally lost on this one

134,193 results

### 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 ...

### 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.

### 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

### 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...

### Math

I had this question answered before,but I'm totally confused with the answer and need a clearer answer,as I'm totally lost. This is composite functions by the way.

### 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 ...

### 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 ...

### 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?

### 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.

### 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

### 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

### Math

n/-3 + 5 > 4= Have to explain all of the steps...every time I do it I come out with a different answer. Please I am totally lost on this one...Thank you.

### physical chemistry

salam.... plz give me some sources of error of determining concentration quotient of FeSCN? plzz urgent

### 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.

### 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 don't even know how to start this problem, I'm totally lost please help!

### 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.

### 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..

### 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?

### organic chemistry

Hi! If you could help me in on how to do Organometallics reaction and mechanisms. Im totally lost. Any website or videos that could help me. I have search in youtube but the videos that i watched werent helpful

### 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!!!!

### 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, ...

### Algebra 2

I am totally lost! (3x^4--8x^2 -3x-3) / (x^2-3)

### 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

### algebra

10-5=3y 2x-3y=1 i am totally lost help please

### Physics

A marble is flicked straight up. It takes 2.3 seconds to reach its maximum height. How long does it take it to return to its original height. Assume there is no air resistance totally lost. if i had velocity, or some other variable i would know what to do. all i know is travel...

### 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!

### Algebra 1

Help me work these right please, I'm totally lost?

### 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 ...

### week 7 math 116 checkpoint

totally lost need help

### Math 116a

7X+4>-13 or 9x+4>-23 The solution of the compound inequality is ? I am totally lost!!!!!!!!

### Math 116 A

7X+4>-13 or 9x+4>-23 The solution of the compound inequality is ? I am totally lost!!!!!!!!

### 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

### Calculus

Integrate dx/xlnx. What method am I supposed to use? I'm totally lost.

### College math

(-30a^14b^8/10a^17b^-2)totally lost on me??

### help plzz

can some 1 help wit my synonym question plz

### Mathematics

(2x)^2(3x)^3=3.548E82 How do I even do this type of math problem am just totally lost here????

### 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)

### 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?

### 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...

### 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?!

### 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

### 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. =)

### 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!!!

### Science

The position of particle moving along x axis is given as a function of time t as x=t^2-4t+7.the distance covered by the particle in first four second is(x is in metre and t is in second). Plzz answer fastly..plzz

### 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?” ...

### 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

### 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

### 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!

### 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?

### 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!

### 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 ...

### 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 ...

### English

Criticism-related expressions 1. Shame on you. 2. You have no shame. 3. You're insane/crazy. 4. Have you lost your mind? 5. Are you out of your mind? 6. He must have stolen the money. 7. Your writing is terrible. 8. Your explanation is totally wrong. 9. 10. (Are they right? ...

### MATHS plzz help ASAP

while paying a bill a man paid $189.80 as the amount of VAT at 13%. how much was the actual bill amount? Plzz help Should i calculate SP+VAT OR ONLY SP

### 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 ...

### math!!!!!!

multiply x(x+y +2) im lost can some one explain

### 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!

### 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 ...

### no one's here to help us!!! -.-

help us!!! plzz btw this is not a question :P

### MATHS PLZZ HELP PLZZ SOMEONE KINDA BEG YOU

a wholesaler supplies 60 books while he was ordered to send 50 books by a retailer. a trade discount of 10 percent is also allowed. what is the net value of the discount to the retailer? Please help me with this question

### 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

### 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 it

### 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

### science HELP PLZZ!!?!?!??!?!!??!

ok i need a little help.. I don't want to sound like a pathetic person but I need help with this question 19.What is global warming?what can people do to reduce global warming? I'm having a hard time... all I need some one to do is explain what it is and i will go from there ...

### Chemistry

Hello! I really need help with this. Name the following salts according to the old -ic, -ous system and the stock system. a. CrS b. Cr2O3 c. CrI3 X 6H20 d. CuCl e. CuI2 f. CuBr2 x 4H20 g. HgCl2 h. Hg2Cl2 i. Fe (OH)3 I am totally lost. I don't know how to name these. I have so ...

### algebra

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

### Algebra II

find An if n = 2 of the arithmetic sequence with An = 14n - 3 i'm lost can some one help

### Geometry

The coordinates of the vertices of ABC are A(-2,2) B (5, -3) and C (-4,-1) Identify the perimeter of ABC. Round each length to the nearest tenth before adding. I am totally lost!

### 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.

### science

i have to make a model on global warming(a 3d model)can u plzz...give some ideas.

### Maths

Hi so I'm doing some SAT practice and I'm quite lost One of the questions says for all integers x, y, z let (x, y, z)*shaded triangle* be defined by (x, y,z)*shaded triangle*= xsq, ysq, z,sq. Then it gives me (1,2,3)*shadedtriangle*/(3,2,1)*shaded triangle*. I can't figure out...

### 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 ...

### Chemistry

Is heat lost in heating water and ice? No. Entropy is lost, but heat energy is not lost.

### Medical Coding 2

What codes are assigned for a patient admitted for an azathioprine I drug-induced aplastic anemia (initial encounter)? The patient has peripheral neuropathy of multiple joints of the lower extremities secondary to severe rheumatoid arthritis. ICD-9-CM Diagnosis Codes with POA ...

### 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 receive it. Thrifty save it. Misers crave it. Robbers seize it. Rich increase it. Gamblers lose it. I could...

### 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?

### 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!!!

### 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

### 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

### 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

### 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.

### 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 ...

### 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?

### 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

### 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

### 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

### chemistry

I hve a eq. Plzz tell me the product. Acetylene rects with H2S presence of Al2O3 with 400â„ƒ.

### 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 ...

### 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

### 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 ...

### Algebra

I am totally stuck on this question, can some one help? Come up with and describe two scenarios: one that models a direct variation situation and one that models an inverse variation situation. Do not state explicitly which scenario is which, but provide at least four data ...

### 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...

### 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 ...

### 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!

### Chemistry

What are some potential pitfalls of using copper to restore the green color of chlorophyll that is lost during the processing of plant foods?

### English

1. This is the same watch that I lost. 2. This is the watch that I lost. 3. This is the very watch that I lost. 4. This is the same watch as I lost. ------------------------------- Do #1, 2, and 3 have the same meaning? They mean that I found that I had lost, right? #4 means ...

### 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 ...

### Math

What object weighs one ounce? 1. Car 2. Newspaper 3. Dog 4. Button plzz help Conexus 2nd grade.

### 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