Number of results: 24,211
Ok. so i'm supposed to find the coordinates of a line using the slope intercept method but i dont understand it!!! can some one PLEEAASE help me? also i'm supposed to graph a line using the same method and they give me the coordinates oly its in an equation form that i need to...
Wednesday, June 22, 2005 at 10:42am by Alli P.
another chem question
Examine the following unbalanced chemical equation: CO(little2) + C --> CO Which of the following is the correctly balanced form of this equation? 2CO(little2) + C --> CO CO(little2) + C -->2CO CO(little2) + C(little2) --> CO CO(little2) + C -->C(little2)O ...
Friday, August 5, 2005 at 7:38pm by alf
can somebody answer my chem questions below plzz
I have posted some chem question below can somebody answer them plzzzzzz Multiple posts asking people to answer your questions will get you banned. Please be patient as someone will help you as soon as possible. If you were travling from Devner,Colardo to Bishmark, North ...
Friday, September 2, 2005 at 11:33am by Nisar
What is another name for cardamist? Please write the formula and a link to its structure. See http://antoine.frostburg.edu/chem/senese/101/consumer/faq/what-is-cardamist.shtml
Sunday, September 4, 2005 at 5:04pm by Nisar
Big Review (2 posts in 1)
How many grams of propane are in a 35L container at 40 deg Celsius and 900 torr? 40 deg C = 40 + 273K = 313 K 900 torr/768 torr = 1.2 atm (when do I convert to atm? I did it here simply to ease calculations) Propane: C3H8 --> M.W. = 44.1 g PV=nRT where R= .0821 Sol: n=1.2 ...
Wednesday, June 14, 2006 at 8:51am by Kizner (chem)
Question: 1. The value of the equilibrium constant for the reaction H2CO3(aq) + energy ÉnÉnH2O(l) + CO2(g) can be changed by introducing a change to which component of the equation? This relates to the Le Chatelier principle. Thanks! Keq (the constant itself) changes only with...
Wednesday, June 14, 2006 at 9:52pm by ???
I do not fully grasp the idea of Normality. What are the normality and the molarity of a sulfuric acid solution if 30mL of it are required to completely neutralize 24mL of 0.02N NaOH? (one of them, N or M, is never equation dependent because...??) HCl(aq) + NaOH(aq)--> NaCl...
Friday, June 16, 2006 at 1:15am by Kizner (chem)
I'm tyring to study for my chem exam and I cant figure out how to do this question: The solubility of MgCl2 is 54.25 g per 100ml of water at 25 degrees C. A student prepares a 2.50 mol/L solution of MgCl2 and states it is a saturated solution. Useing calculations determine if ...
Saturday, June 17, 2006 at 11:55am by Tracy
Does EDTA react with light? I forgot to cover a dilute bottle of EDTA (about 0.01M) and was wondering if that would have any affect on the solution I don't think so. I have used EDTA many times and never covered it or used a tinted container. okay =) i posted an answer to the ...
Monday, July 2, 2007 at 7:13pm by christina
Initial info: The atoms of crystalline solid pack together into a three-dimensional array of many small repeating units called unit cells. The simplest of the unit cells are those that have cubic symmetry, with atoms positioned at the corners of a cube. Atoms can also be found...
Friday, November 30, 2007 at 1:36am by K
I am having problems with the following 2 questions: 1. Gallium crystallizes in a primitive cubic unit cell. The length of an edge of this cube is 362pm. What is the radius of a gallium atom? Express your answer numerically in picometers. "radius = _____pm" & 2. The face-...
Friday, November 30, 2007 at 1:36am by DrBob222
Please help me with these AP CHEM homework problems problems and show me the steps: Mass per Volume Results for Titrations: Determine the mass per volume results requested in the following problems. #23) A particular water supply is found to contain 0.000160 MAs, what is the ...
Thursday, July 31, 2008 at 10:39am by shylo
Please help me with thses AP CHEM homework problems and show the steps to how to find the solutions: Solid Liquid Titrations: Determine the concentration of the indicated liquid unknown given the mass of a solid standard and the buret data for the titration. #35) What is the ...
Thursday, July 31, 2008 at 10:50am by shylo
Hi, This is one of my chem hw problems. Does anyone have links to websites that might help me solve this..or equations? It sounds like there are two parts to the question but I'm not sure. Volts and Joules? 1. Electrons are used to determine the structure of crystal surfaces. ...
Monday, October 27, 2008 at 12:05am by Anne
I know this might sound easy... but i need these problems for bonus and i want to make sure they are right Silver nitrate reacts with strontium chloride in an aqueous precipitation reaction. What are the formulas of silver nitrate and strontium chloride? Write the molecular ...
Monday, October 27, 2008 at 10:50pm by Anna-Marie
I looked at the first four, they are right. Dont you work with someone on chem homework? Like a study group? That is a very effective way to work chem and physics problems.
Wednesday, November 19, 2008 at 11:22am by bobpursley
chem - precipitation problems
When hydroge sulfide gas is passed through a solution of lead (II) nitrate, lead (II) sulfide precipitates out. Write a balanced equation for this reaction and calculate an average rate, in mol/s for the reaction from this data: 1) at 0 seconds, mass of lead (II) sulide is 0 g...
Tuesday, June 8, 2010 at 4:49pm by Capella
chem - precipitation problems
I would average the five runs to give g/s, then divide by 239.27 to change to moles/s.
Tuesday, June 8, 2010 at 4:49pm by DrBob222
abilify and attention problems
abilify and attention problems
Sunday, July 25, 2010 at 6:59pm by abilify and attention problems
hi im doing a post lab sheet for chem class. and im having a little trouble. i have: temperature 12.6 C -> 285.6 K Time 816 sec but im supposed to find 1/T(K) it looks like my classmate did this: 12.6 x 285.6 = 3598.56 however they gave me the response to group 2 also: and ...
Saturday, October 16, 2010 at 9:08am by chem