April 16, 2014


Number of results: 156,046

calculate the molarities of each of the ions in a solution prepared by diluting 78mL of 4.5M Ca(ClO3)2 (aq) to 156mL with water. I dont understand how to answer this question.
Wednesday, October 26, 2011 at 12:53am by amy

8th grade science
Can someone please help me solve this question please because I'm having trouble with this question and can someone please explain to me how they got this answer? Thank you :D
Wednesday, November 13, 2013 at 9:59pm by gina

How can the concept of specific heat capacity of water be used to explain the heating and cooling patterns if the oceans and the climate on the planet?? Can someone please explain this to me it would really help a lot.
Sunday, January 27, 2013 at 8:31pm by Emily

Algebra, explain how to please
Can someone explain to me how to solve -14=2/5(9-2b) It would be greatly appreciated thank you
Sunday, October 17, 2010 at 8:15pm by June

Maths-can someone explain something to me???
hey, can someone explain vectors to me? im soooooo lost, I don't understand them at ALL. please please please help me. :(
Monday, February 18, 2013 at 12:48pm by Corie

8th grade math
I need someone to explain how to solve equations with two variables and tell me what the formula or equation is? Please help and explain. Thank you!
Thursday, March 1, 2012 at 9:36pm by saranghae12

chem (urgent)
Can someone please explain to me in simple terms what the eutectic point and temperature are?
Friday, September 16, 2011 at 12:03pm by laura

6th grade math
can someone please explain to me what the Answer is and also can someone please explain to me how to slove this question step by step??? Please??!!
Monday, February 13, 2012 at 5:33pm by Kate

Algebra II- please help!
I just cannot seem to be able to grasp the concept of solving polynomial inequalities. Can someone please explain, step by step, how to solve them? Here's a problem I can't solve. Please use this as an example: (x-2)(x-5)<0 I cannot thank you enough for helping me with this...
Wednesday, December 10, 2008 at 4:13pm by Erin

grade 9 math
Can someone please help me solve this equation. And please explain how to break this down. 4b-6+b-9= 0
Tuesday, April 12, 2011 at 7:45pm by brooke

Algebra, explain?
So I have to solve this problem 9a=6(a+4) And then I wrote down: 9a=6a+24 but I don't know what to do from there, can someone explain to me please?
Monday, October 18, 2010 at 2:43pm by Allyson

Can someone please explain how I would write the equation for the hydrolysis of lactose using structural formulae? Thanks.
Tuesday, March 20, 2007 at 5:40pm by Confucious

I got an answer of 24.23 degrees celsius and it marked me wrong? Can someone please explain and tell me what they get.
Friday, February 10, 2012 at 6:31pm by Akle

solve equation then check for extraneous solution please someone explain this to me. 6/6-4x/=8+4 then one that is solve the inequality s/x+3/4<2 I don't understand these problems and then it says to graph
Sunday, August 26, 2012 at 5:38pm by kevin

math 012 please help explain
can someone please help explain how to do this problem. i have a previous posting where i tried to work the problem out, and someone tried to explain where i was confused, but im still confused. 4(2n+1)=3(6n+3)+1
Sunday, February 1, 2009 at 5:28pm by amy

is (-1, 5) a soultion for each system? x + y = 4 x=-1 can someone please explain how to solve this? thanks.
Sunday, September 16, 2007 at 7:34pm by Amber

Can someone solve this and explain it please 4^log2 (2log2 5)
Monday, May 23, 2011 at 10:43pm by Chuck

How many sigma bonds are there in trypophan? I know the answer is 28 but I don't know how to get that answer. Can someone please explain?? Thanks!
Friday, February 12, 2010 at 3:45pm by Lauren

The square root of 27b^11 Can someone explain to me how to solve this?
Wednesday, May 4, 2011 at 9:26pm by Please Help

for 2Al2O3----> 4Al(s) + 3O2 the question is what is the heat change for the formation of 1 mol of aluminum oxide from its elements? Al2O3:-1676.0 O2:0.0 Can someone please explain how to complete this problem step by step please??
Tuesday, January 22, 2013 at 6:08pm by sara

Can someone please explain how to solve 3x^2+7x-15=0 by using the quadratic equation? I know that the equation is: ax^2+bx+c=0 but I get confused about how to set the problem up and solve. Thanks.
Saturday, September 26, 2009 at 10:08am by B.B.

Can someone please help me with math problem and explain to me step by step how to solve it so I will know how solve other problems like this Thank you in advance Multiply and then, if possible, simplify by factoring /7x /21y
Tuesday, February 28, 2012 at 7:16pm by Anonymous

Math SOmeone please please help
Find the derivative of the function. g(u) = (5+u^2)^5(3-9u^2)^8 Could someone please explain the steps that would lead me to the answer? I'm completely stuck.
Monday, February 21, 2011 at 11:15pm by Anonymous

Can someone explain to me how to do this please!!! Solve the system of equations graphically: x+y>3 x-y<6
Thursday, May 15, 2008 at 8:47pm by Anonymous

How would you solve this problem: Slove y=1/4-1 if the domain is(-4,-2,0,2,4) Could someone please explain to me how to do this? Thank You in advance for your help!
Wednesday, January 27, 2010 at 6:12pm by brooke

i still cannot solve the problem. can someone please explain it a little bit more?
Saturday, February 19, 2011 at 4:52pm by Julius

i still cannot solve the problem. can someone please explain it a little bit more?
Saturday, February 19, 2011 at 4:52pm by Julius

Use the quadratic formula to solve the equation. -4x^2-3x+2=0 Can someone please explain
Thursday, November 1, 2012 at 9:32pm by Lee

Math (Algebra)
Could I have someone check my work please? If I did something wrong please explain to me where I went wrong. Thank You. Example of the product rule to solve would be, (5^3)(6^3) Example of the quotient rule to solve would be, (4^2) / (8^2) Example of the power rule to solve ...
Sunday, July 18, 2010 at 12:09pm by Lynn

Q: Corbin is playing a board game that requires rolling two number cubes to move a game piece. He needs to roll a sum of six on his next term and then a sum of ten to land on to the next two bonus spaces. what is the probability that Corbin will roll a sum of six and then a ...
Saturday, March 9, 2013 at 10:07pm by dingbat

College Algebra
Solve 2x(squared)-3x-2=0 using the quadratic formula. Can someone explain this to me please?
Sunday, November 18, 2007 at 9:26pm by Alicia

i do not understand how to solve for x and y can someone please explain it to me. an example of the problem i am workin on is 6x-4y=72
Sunday, April 3, 2011 at 10:20am by anon

Can someone EXPLAIN to me how to solve for x. Please don't just give me an answer because I won't learn anything from that. sq root of (x+6) = x
Sunday, August 14, 2011 at 8:25pm by Juan

Biology....someone who can explain something to me
can someone explain the Miller-Urey Experiment to me? I've read it again and again and I just don't really get it. Please help me out here.
Tuesday, February 5, 2013 at 9:08am by Corie

solve (Z^2)+5=-4/Z^2 how do i solve it?? the answer is +2or-2, or, +or -i. but i really dont know how to get this answer.i tried to multiply both side by Z^2, but i think it just made it more comlicated and i didn't get the right answer at the end...can someone please explain...
Wednesday, March 12, 2008 at 4:15am by Anne

what is the surface area of a square pyramid if the slant height is 15.2 m and the base is 15.2 m? please explain it to me. this is not homework, it is a practice question and I do not understand how to solve it. Someone PLEASE help!
Thursday, February 20, 2014 at 2:12pm by #1Student

Intermediate Algebra
solve equation (x+1)(x-2)=54 Eric stated that the solution would be (x+1)=54==> x=53 or (x-2)=54==> x=56 However at least one of these solutions fails to work when substituted back in the orginial equation. Why is that? Please help Eric to understand better, solve the ...
Monday, June 18, 2012 at 8:45pm by ladybug Please Help!!

I don't understand what to do at all, I've several like this if someone could explain this one i could maybe undersatnd what to do with the rest. Thanks!! "Factorise, then solve the equation x^2=5x-36=0 then explain how you could use your answer to solve 5x^2+25x-180=0 What ...
Monday, March 7, 2011 at 10:08am by Susan

Algebra 1--Can someone please explain this to me?
Can someone please explain this to me?
Wednesday, January 15, 2014 at 4:27pm by Anonymous

I DONT GET WHATS DONE.. DR.Bob22 - could u please explain this again..thank u
Tuesday, February 17, 2009 at 12:10am by CHEM

Johns football game last for 50 minutes. What reduced fraction of an hour is that? Can someone please explain to me how to solve this question?
Tuesday, November 1, 2011 at 1:46pm by Mindy

I solved it numerous times and it says I am getting the wrong answer. Could you help explain how to solve it and see what I am doing wrong please.
Friday, February 10, 2012 at 6:32pm by Akle

World History
I needed someone to explain to me your answer to my question so I can write a paragraph on it. Please don't give me a Wikipedia link, I need someone to actually explain this to me without just saying, "go here". I really appreciate you going through to the work to help me. :) ...
Friday, January 14, 2011 at 9:11pm by Sara

I dont understand how Rutherford's gold foil experiment proved that the positive charge of the atom had a very small volume in comparison to the whole atom. Could someone explain this to me please?
Thursday, July 9, 2009 at 5:33pm by Lena

How many kilojoules of energy are released from the carbon carbon single bonds when glucose (C6H12O6) is burned??? i asked this before but i dont really understand it any better. can someone please explain it differently thanks
Sunday, September 6, 2009 at 11:10pm by jake

Physics HELP!!!
A ball is kicked at an angle of 50 with a velocity of 14m/s. a. how long is it in the air? b. how high does it rise? can someone please explain to me how to solve this???
Tuesday, October 21, 2008 at 7:56pm by Lauren

Math ; please please help.
1. Explain in detail how to determine the value of the independent variable in a quadratic relation if the value of the dependent variable is known. Please check my answer - You would substitute the value for the dependent variable, then you would solve for the independent ...
Wednesday, April 9, 2008 at 11:18pm by Amanda

0.3x-0.2y=4 0.5x+0.3y=-7/17 Can anyone Please help me solve using the elimination system..... Someone tried to explain it but I still do not get it at all
Saturday, March 13, 2010 at 7:19pm by Holly

Algebra......Help Quick!!
12a^3bc-18a^2bc^2+6a^2c, x^2+20x+36, 12x^4-8x^3-4x^2, x^2+36x, 9x^2+6x+1, 6x^3+11x-10, x^2+3x-6..............can someone please help me solve some of these problems if not all. I have forgotten how to solve them can someone please help..Thanks
Tuesday, September 2, 2008 at 8:22pm by Carrie

The solubility of AgCl(s) in water at 25 C is 1.33x10^-5 M and its deltaH of solution is 65.7 kJ/mol . What is its solubility at 60.1 C ? Please explain how to solve for this!!
Friday, March 22, 2013 at 7:16pm by Lena

Algebra 1
Solve this 5y+4x=4. Can someone please help me solve this step by step. I am learning,but It always helps clear things when things are explain. However, I am grateful for any help anyone can provide me. Thank you so very much. Your help is always appreciated.
Tuesday, January 18, 2011 at 11:07pm by Esther

maths logarithms
Solve this equation: 5^2x+1 + 24(5^x) = 5 The answer has to be -1 but I can't understand how to get this answer. Can someone please explain? Thanks!
Wednesday, October 17, 2007 at 4:05pm by Claire

math/ algebra 1
can someone please help me explain how they got this answer and can someone please show me the steps into solving this question? Q: Four more than the quotient of a number and three is at least nine.
Sunday, November 10, 2013 at 4:34pm by ellie

algebra 1
can someone please help me solve the question and explain to me and also show me specifically what to do step by step??? Q: what is the standard form of Y-8=2(x+2)?
Saturday, November 9, 2013 at 2:35pm by Catarina

so we did a chem lab and one of the questions is to tabulate the amount of S2O3 consumed in moles and times (sec) for each run. I'm just not sure how to calculate the amount consumed. Can someone please explain how?
Saturday, February 1, 2014 at 10:40pm by Anonymous

Math help please
1. Solve for x. 4(x - b) = x b = 4/3x b = 3/4x x = 4/3b x = 3/4b 2. Solve for y, then find the value of y when given x = 2. 6x = 7 - 4y -12 7/4 19/4 24 I need help solving these. Can you please explain how to solve these problems?
Wednesday, October 2, 2013 at 6:52pm by Charlotte

CAN someone please help me...I am so confused and I have little time left to do my assingment, please! I am freaking out! Please help me!! Can someone please explain why when the centripetal force increases, so does the radius, and why when Centripetal force increases, so does...
Tuesday, October 2, 2007 at 9:28pm by Cooper-Nichol

Algebra 1
Can someone help me solve this problems please? Thank you very much 7x+9>1x+3= Can someone help me undertand the steps to solving this problem, please.
Monday, January 3, 2011 at 4:12pm by Erudita

algebra 1
a number is less than one fourth of the sum of three times the number and four. can someone please explain to me how they got this answer and can someone please show me each step.
Sunday, November 10, 2013 at 10:50pm by morgan

Solve: 0.1p + 2.1 = 4.6p - 1.9 + 0.5p I am getting all confused on how to solve this problem. can someone explain it to me?
Monday, September 24, 2007 at 10:50pm by Dk

2H2(g)+O2(g) ---> 2H2O(l) delta H= -572kJ/mole of O2 Calculate the amount of heat evolved when 10g of hydrogen are burned in excess oxygen. Can someone please explain step by step? =D
Sunday, July 15, 2012 at 10:08pm by Shirley

I have a math CRCT test today and I needed some help on a last minute review problem. Can someone please explain how to solve this? 1. 12x-3+6x-2=31 -MC
Wednesday, April 22, 2009 at 11:48am by mysterychicken

could someone please still explain? and explain how the 4.74 pH was found? thanks
Sunday, November 7, 2010 at 4:21pm by J

couple someone please still explain? and explain how the 4.74 pH was found? thanks
Sunday, November 7, 2010 at 4:21pm by J

can someone briefly explain what did aristotle and what did plato contribute to chemistry?
Friday, September 19, 2008 at 6:55pm by kelli

physics - please explain further
Can someone please explain the answer I got for a question I previously posted on this page? I don't understand the solution I was given and even when I try it, I'm not getting the right answer.
Tuesday, April 21, 2009 at 7:18pm by Lucy

Math Help
could someone please give me an example not an example using coins, marbles, spinner, like something different that would explain the difference b/w theoretical and experimental probability. And please explain.
Thursday, March 20, 2014 at 7:42pm by Annie

please help someone explain this please!! The length of a marathon is 138,435 ft.each stride,or step,by a particular runner is 3 ft long.does the number of strides the runner takes fit evenly into the length of the race?(EXPLAIN ANSWER PLEASE) --------------------------- IS 38...
Thursday, November 21, 2013 at 9:50am by matt

Science- Chemistry
Could someone please explain a few things? First off, how do you change a normal compound or element and change it to an ion? And second, could you please explain the net ionic equations?
Wednesday, February 11, 2009 at 6:14pm by Mme. Bella

Could you please explain how to use a matrix (matrices) to solve a system of linear equations (two variables)? My book doesn't explain it in a way I can understand. Please and thank you.
Thursday, January 24, 2013 at 1:11am by Caroline

1. logx+log(x+48)=2 14.log50+log(x/2)=2 23.log72-log(2x/3)=0 Could someone please explain to me how to solve these?
Monday, February 4, 2008 at 8:03pm by chelsea

The point (0,1) has the distance ____, from the line defined by y=-2x-1 How do you solve this? I tried the pythagorean theorem but I don't think I did it right as I came out with the square root of two. Can someone please explain this to me.
Thursday, October 7, 2010 at 10:39pm by math

someone please help please help don't understand solve each literal equation for the indicated variable. (solve for s) d=c-s ______ n
Saturday, December 8, 2007 at 12:07am by allen

Physics- can someone Please help?
I'm asking nicely. =D (I can almost solve the problem if only someone could tell me what do I put into the force equation for q2 -pretty frustrating that I can "almost" solve it but I need just one part)
Wednesday, April 2, 2008 at 12:33am by ~christina~

physics help please!!!
The tires of a car make 63 revolutions as the car reduces its speed uniformly from 94.0 km/h to 58.0 km/h. The tires have a diameter of 0.88 m. What was the angular acceleration of each tire? And If the car continues to decelerate at this rate, how much more time is required ...
Friday, March 26, 2010 at 12:59pm by Anonymous

5th grade math (word problems)
I'm not sure how to solve the following problem. I don't think i have enough information. Ali deposited $120 in her savings account. This represents 75% of the money she received for her birthday. She pent the rest of her money on a lego toy. How much did the lego cost? Can ...
Thursday, March 7, 2013 at 6:36pm by Alex

A secondary alcohol results from the attachment of a hydroxy group to which carbon atom? C | <---GIVEN STRUCTURE C1-C2-C3-C4 A) C1 B) C2 C)C3 D)C4 Answer is C! I have to explain why, but the teacher never taught us anything about organic chem. So please explain!
Friday, April 5, 2013 at 2:52pm by Anonymous

Can someone explain in really simple terms the difference between Sigma and Pi bonds?
Wednesday, June 18, 2008 at 10:52pm by Alex

I need some help understanding this limit formula, could someone please explain how to solve for f(x)=x^2+1 using this formula: (f(x+Δx)-f(x))/(Δx)
Sunday, August 30, 2009 at 9:21pm by Christian

I am in dire need of some help I am not understanding this at all I am to solve the systems of equations by graphing 2x-y=14 2x+3y=-10 Could someone please explain this to me in dummy terms
Thursday, June 26, 2008 at 5:45am by Anonymous

There are 2 hats, 3 scarves, and 3 pairs of mittens How many different combinations of 1 hat, 1 scarf, and 1 pair of mittens? How would I solve this, other than writing out each combination? Could someone please explain how?
Monday, October 11, 2010 at 12:47am by Amy

college algebra
Solve the following inequality. x^3+9x^2-108 less or equal to 0. Then write your solution in interval notation. I am sooo confused and do not have any idea how to do this. Can someone please show me step by step please??? Thanks in advance. Someone who is confused.
Tuesday, December 25, 2012 at 6:27am by allison-please help!!!

org. chem
Can someone explain in simple terms the difference between hemiketal and hemiacetal? Just curious
Monday, February 11, 2013 at 2:52pm by meghan

Please can someone help explain the following: Explain the kinetics of combustion as a complex free radical process using hydrogen fuel.
Saturday, May 5, 2012 at 11:53am by Kitty

Human resource
Can someone explain me this question: explain how and to what extent THE CONCEPT OF PEOPLE HAS CHANGED OVERTIME ,HENCE,HIGHLIGHTING THE EVOLUTION AND GIVING PRACTICAL EXAMPLES TO ILLUSTRATE YOUR ANSWER. am new to this module and can someone pls explain that question to me!
Monday, February 20, 2012 at 10:29am by pallavi

Can someone please explain the behavior of HCl/NaOH mixture as to why it started bubbling/dissolving when combined with Mg and with NH4Cl and why when blue litmus paper was dipped in the HCl/NaOH mixture it turned red. Also can someone explain the correct behavior that is ...
Sunday, March 22, 2009 at 8:09pm by PZT

please help please i find this difficult if someone could just explain please
Thursday, December 1, 2011 at 2:04pm by anabel

Algebra check/help?
So, for this one, it is 2x-14=3x+6 Can someone please explain to me how they would solve this problem? I think you would add 14 to the 6, but I'm not sure..
Tuesday, October 19, 2010 at 3:51pm by Allyson

12 Biology! URGENT!
Can anyone please explain how LH affects estrogen and progesterone? I tried searching the internet and I don't understand, so can someone EXPLAIN it to me in words? THANKS!! THANKS!
Tuesday, May 13, 2008 at 9:50pm by Kyliyok

can someone explain the leveling effect in chemistry or provide a good link please? in my chem book it says something like HNO3<H2SO4<HCl<HBr<HI<HClO4 but i dont get why they are greater/smaller
Friday, August 5, 2011 at 2:15pm by Henry

Algebra 2
Can someone please explain to me how to solve logarithmic equations? Some examples are: -5=log2X 3^5x+1= 40 and log6X+(log6)7=(log6)35 I hope that makes sense because logs are hard to type.
Friday, April 18, 2008 at 1:11pm by JaneLee

someone please help i hav posted my questions like 5 times and no one is answering, can someone please solve these inequalitys 6y+1<19 2r-8>6 b-5>-2 2y+1<-5 4x-6>-10
Tuesday, March 18, 2008 at 7:48pm by Julie

How would you solve 23=1-d? I don't even think there would be an answer to this.. can someone explain to me how to solve this? Thank you!
Tuesday, October 19, 2010 at 2:57pm by Allyson

Math Help Please
Would someone please be kind enough to explain steps for this one. Thank you. If m and n are positive integers and m is 250% of n, what percent of m is 2n?
Monday, February 27, 2012 at 5:54am by Help Please

Plz someone Chem Urgent Help
Assuming E(11) is the ionization potential for Cs(g) ==> Cs^+ +e then Sublimation + ionization + 1/2 dissociation + electron affinity + Ecrystallization = heat formation. If your numbers are right, then 76+376+121-349+Ecrystallization = -443. Solve for E crystal. Most P. ...
Friday, January 16, 2009 at 9:06pm by DrBob222

History please help
Could someone explain what does it mean to "stabilize international exchange rates"? I would really appreciate it if someone wrote a brief explanation, because I just don't understand
Monday, October 25, 2010 at 8:27pm by Amy

i was doing the mean theorem for this problem: (x+4)^2 (x-3) on [-4,3] i got to: 3x^2 + 10x-8=7 someone helped me out and told me the answer was (-5 +/- sqrt(70))/(3) but i don't know how to get to there, can someone please explain to me how to get to this point?
Wednesday, January 29, 2014 at 12:35am by eric

math please help
Inverse Trigonometric Functions please explain this to me in mathematical steps please how to solve sin^(-1) (-1/2) this equals - pi/6 i know that sin^(-1) domain and range switch from original sin but i don't know how to apply that... i need an mathematical explanation or if ...
Thursday, April 14, 2011 at 8:59pm by Amy~

science question?
can someone explain to me?? can someone explain the economic impact of wind energy on an area
Monday, March 24, 2014 at 3:26pm by matt

Can someone please explain what factors affect a country GDP? Also, if Thailand has a GDP of 4.5% and Australia has a GDP of 2.8%, please explain which country has a better economy. Thanks for your help
Saturday, September 8, 2007 at 8:39am by Nat

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