Thursday

April 17, 2014

April 17, 2014

Number of results: 50

**Chemistry**

My mistake :( Sorry.
*Saturday, April 23, 2011 at 1:14pm by Lindy*

**Statistics**

*librarians intial claim
*Friday, May 2, 2008 at 12:43pm by Lindy*

**statistics**

I meant REASONABLE, sorry. Thanks!
*Thursday, May 29, 2008 at 8:05pm by Lindy*

**algebra**

2c-d=-2 d=-4c+20
*Monday, January 12, 2009 at 8:05pm by lindy*

**Chemistry**

Oh never mind I got it. Thank you for your help!
*Friday, April 22, 2011 at 8:44pm by Lindy*

**math**

sorry, I 'm still not understand
*Sunday, December 9, 2012 at 8:14pm by lindy*

**math**

sorry,i am still not undrstand
*Sunday, December 9, 2012 at 8:32pm by lindy*

**chemistry**

help balance HNO2+HNO3
*Tuesday, December 3, 2013 at 4:36am by lindy*

**math**

could u please explain how u work it out,thanks
*Sunday, December 9, 2012 at 8:14pm by lindy*

**Statistics**

Thanks. Would that mean the initial claim was too high?
*Friday, May 2, 2008 at 12:43pm by Lindy*

**math**

three sevenths divided by six thirteenths = ?
*Monday, December 24, 2012 at 11:56pm by lindy*

**world history**

Do you know how much it was in France approximately? Do you think there is a source that can help me? :(
*Saturday, April 23, 2011 at 1:27pm by Lindy*

**world history**

sorry it was logged in as my brother's name. Thanks again!
*Saturday, April 23, 2011 at 1:27pm by Lindy*

**math**

find the missing number; 8 1 4 5 7 # ;81 4 25 36 ?
*Sunday, December 2, 2012 at 6:18am by lindy*

**math**

what is the total surface (in square units) of an open-topped box with dimensions L*W*H =9*7*6
*Saturday, April 13, 2013 at 6:44am by lindy*

**lindy**

how many different flags can be made? if there are 5 colors,but the flag must have 3 bands of color
*Saturday, February 9, 2013 at 6:26am by cara*

**math**

pqrst is a regular hexagon. v is the intersection of pt and su.how big is angle tvs?
*Saturday, April 13, 2013 at 6:42am by lindy*

**World history**

What was the economy of Syria like before the current revolution? Do you know any good website for it? Please help me!
*Sunday, April 24, 2011 at 7:57pm by Lindy*

**math **

24874divided by 17 ,which digits should one change in the first number to increase the answer by 100
*Saturday, April 13, 2013 at 6:47am by lindy*

**math **

24874divided by 17 ,which digits should one change in the first number to increase the answer by 100
*Saturday, April 13, 2013 at 6:47am by lindy*

**world history**

Can you compare Syria's education level of population with the France's back in the days before the french revolution?
*Saturday, April 23, 2011 at 1:27pm by Lindy*

**Chemistry**

See your post under science by Lindy. We appreciate it if you keep the same screen name. It helps us help you.
*Saturday, April 23, 2011 at 2:15pm by DrBob222*

**math**

we decided on a new logo for our brand of shirts.It was to be 3 stripes. How many different logos we make, if we used 3 colors
*Sunday, December 9, 2012 at 8:32pm by lindy*

**chemistry**

Ahh sorry it was a mistake. Sorry :(
*Saturday, April 23, 2011 at 1:18pm by Lindy*

**Chemistry**

But how would you get the mass if the question says 2.00ml and density is 13.6g/cm^3? How do you convert ml to cm^3?
*Friday, April 22, 2011 at 8:44pm by Lindy*

**math**

how many 2 digit numbers can be written so that the second digit is greater than the digit before it ?
*Wednesday, December 5, 2012 at 8:54am by lindy*

**math**

tom, chris, charls, TIM, lorra, lindy: please do not use different aliases. A[]B = A^B-(A+B) for 3[]4, substitute A=3, B=4, rewrite the equation as: 3[]4=3^4-(3+4)=81-7=74 You can do the same for 7[]9. If you wish, you can post your answer for checking.
*Tuesday, December 25, 2012 at 12:07am by MathMate*

**science**

what quantity of heat must be absorbed to convert 86.1 g of liquid to a vapor at its boiling point, -24.09 c? the heat of vaporization of ch3cl is 21.40
*Saturday, April 23, 2011 at 1:29pm by Lindy*

**chemistry**

the grams of Ba(OH)2 that reacted was 11.99g. but isn't this still of the impure Ba(OH)2 sample? how do i find out the mass of pure Ba(OH)2? thanks for you're help so far
*Saturday, February 26, 2011 at 2:38pm by lindy*

**calculus**

the side of squyare,s, is increasing at a rate of k unites per second. find the rate at which the area of the square is increasing
*Monday, November 29, 2010 at 5:22pm by lindy*

**Life orientation**

Describe the life styele cancer and explain factors that contribute to the cancer
*Sunday, April 29, 2012 at 7:16am by Lindy*

**Chemistry**

A 237 g piece of molybdenum, initially at 100.0°C, is dropped into 244 g of water at 10.0°C. When the system comes to thermal equilibrium, the temperature is 15.3°C. What is the specific heat capacity of molybdenum?
*Friday, April 22, 2011 at 8:38pm by Lindy*

**Chemistry lab**

I did a copper cycle lab and my final weight of the copper is less than what i started with. Where did the lost copper go?
*Sunday, April 24, 2011 at 3:39pm by Lindy*

**lindy**

You need to specify the orientation and relative widths of the bands and slso the placement of additional images, such as the eagle and snake on the flag of Mexico or the globe on the flag of Brazil. Strictly speaking, by varying these, there are infinite possibilities.
*Saturday, February 9, 2013 at 6:26am by drwls*

**Calculus**

The height (in feet) at time t (in seconds) of a small weight oscillating at the end of a spring is given below. h(t) = 0.2 cos(2t) (a) Calculate the weight's average velocity over the time intervals [1, 2] and [5, 7].
*Saturday, January 26, 2013 at 12:11am by Lindy*

**chemistry**

calculate the concentration of ions present after the reaction between 13.50mL of 2.00M BaCl2 and 2.50mL of 6.00M H2SO4 i just wanted to check my answers [Ba^2+]=1.69M [SO4^2-]=o.938M [H^+]=0 [Cl^-]=1.50M if they are wrong please explain
*Saturday, February 26, 2011 at 6:37pm by lindy*

**math**

jeremy spends 1/4 of his pocket money each week on books.he saves 2/3 of what is left over.if he saves $5 each week,how much weekly pocket money does he receive
*Saturday, April 13, 2013 at 6:55am by lindy*

**statistics**

It is known that 60% of people do not respond to mailed questionnaires. In a sample of 20 questionnaires mailed, what is the probability that more than 12 people will respond?
*Friday, May 2, 2008 at 12:40pm by Lindy*

**chemistry**

how wold you prepare 2.00L of 1.00M HCl solution using 6.00 M HCl? i already found the volume of 6.00M HCl needed to be .333L. i am confused about how to actually prepare the solution. do i used a volumetric flask or any other glassware?
*Saturday, February 26, 2011 at 5:31pm by lindy*

**Chemistry**

In a copper cycle lab, where could have the lost copper might have went? Let's say I did a copper cycle lab and my final weight of the copper is less than what i started with. Where did it go?
*Saturday, April 23, 2011 at 1:26pm by Lindy*

**statistics**

population mean=42.6 standard deviation=12 n=16 M=34.4. Is this mean a reasonable outcome for a sample of n=16, or is this sample mean very different from what would usually be expected? I obtained a z -score of -2.73. Thus, that would make the sample mean a reasonless outcome...
*Thursday, May 29, 2008 at 8:05pm by Lindy*

**Chemistry**

The freezing point of mercury is -38.8°C, is the only metal that is liquid at room temperature. What quantity of heat energy, in joules, must be released by mercury if 2.00 mL of mercury is cooled from 23.0°C to -38.8°C and then frozen to a solid? (The density of liquid ...
*Friday, April 22, 2011 at 8:44pm by Lindy*

**Chemistry**

The freezing point of mercury is -38.8°C, is the only metal that is liquid at room temperature. What quantity of heat energy, in joules, must be released by mercury if 2.00 mL of mercury is cooled from 23.0°C to -38.8°C and then frozen to a solid? (The density of liquid ...
*Saturday, April 23, 2011 at 1:14pm by Lindy*

**chemistry**

The freezing point of mercury is -38.8°C, is the only metal that is liquid at room temperature. What quantity of heat energy, in joules, must be released by mercury if 2.00 mL of mercury is cooled from 23.0°C to -38.8°C and then frozen to a solid? (The density of liquid ...
*Saturday, April 23, 2011 at 1:18pm by Lindy*

**math**

a box contains more than 25 but fewer than 40 balls.When the balls are counted by 3 there is 1 left over.When the balls are counted by 5 there are 2 left over.How many balls are in the box?
*Sunday, December 2, 2012 at 6:02am by lindy*

**math**

a bottle is 1/4 full of cordial,if 500 ml of cordial is added to it, the bottle is 2/3 full.how many ml does the bottle hold when full
*Saturday, April 13, 2013 at 6:52am by lindy*

**chemistry**

Wait but I tried out the question but I kept getting the wrong answer... So if [mass Hg x specific heat liquid Hg x (Tfinal-Tinitial) ] + (mass Hg x heat fusion) (27.2 * 0.1410 * -61.8) + (27.2 * 11.4) and I got the answer as -598 but the answer is wrong. What am I doing wrong?
*Saturday, April 23, 2011 at 1:18pm by Lindy*

**Algebra - word problem**

A red ball and a green ball are simultaneously tossed into the air. The red ball is given an initial velocity of 96 feet per second, and its height, t seconds after it is tossed is (-16t^2 + 96t) feet. The green ball is given an initial velocity of 80 feet per second, and its ...
*Monday, November 30, 2009 at 5:21pm by lindy*

**Algebra---Variation**

It is a variation problem. I know what the answer is and how to get to the answer I just don't know how I got it. From measurements on many rivers, geographers find that the length of a river that drains a particular "basin" of land is approximately proportional to the 0.6 ...
*Saturday, April 23, 2011 at 1:34pm by Lindy*

**Statistics**

The head librarian claims that books have been checked out an average of seven times in the last year. You suspect she has exaggerated the checkout rate and that the mean number of checkouts per book per year is, in fact, less than seven. Using the computerized card catalog, ...
*Friday, May 2, 2008 at 12:43pm by Lindy*

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