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| Here's the questions in Chemistry. Go get 'em! 1-20 of 25 | Next | ||||
| Bounty | Status | Sub-Category | Question | Due |
|---|---|---|---|---|
| $1.00 | Answered | General Chemistry | chemisrty
the number of protons in one atom of an element determines the atoms? |
Sep. 11, 2011 |
| $1.00 | Answered | General Chemistry | chemistry
Three facts about mixtures |
Mar. 10, 2010 |
| $1.00 | Answered | General Chemistry | what are three facts about mixtures.
what are three facts about mixtures. |
Mar. 10, 2010 |
| $1.00 | Answered | General Chemistry | chemistry
what are three facts about mixtures |
Mar. 10, 2010 |
| $1.00 | Answered | General Chemistry | About Calcium Hydroxide
Physical and Chemical Properties of Calcium Hyroxide |
Dec. 18, 2009 |
| $0.25 | Answered | Organic Chemistry | chemistry
Zn(s) + cU(NO3)2(aq) Zn(NO3)2(aq)+ CU(s) = is this a combination, reaction, single replacement or double replacement |
Dec. 03, 2009 |
| $1.00 | Unanswered | Physical Chemistry | phesical chemistry
The two compounds A and B shown in the attached ChemDraw file can be equilibrated in aqueous acid. Experimentally, the equilibrium constant is found to be 1 at 48 °C. Deduce a steric A value for... |
Dec. 03, 2009 |
| $1.00 | Answered | General Chemistry | equations
how do you balance equations such as Mg + O2? |
Nov. 23, 2009 |
| $1.00 | Answered | General Chemistry | equations
how do you balance equations such as Mg + O2? |
Nov. 23, 2009 |
| $1.00 | Answered | General Chemistry | questio
what is the chemical formula of flourine |
Nov. 22, 2009 |
| $1.00 | Unanswered | General Chemistry | For Italy71. DQ 1 week one sci for particapation
For Italy71. I need help on DQ 1 week one for science for particapation. I need feedback from this instructors question. In her reply, Selena indicates that she compensates for forgetful children... |
Nov. 22, 2009 |
| $2.00 | Answered | General Chemistry | chemistry
Washing soda is a hydrate. It can be written as Na2CO3 xH2O where x is the number of moles of H2O per Na2CO3. When a 2.558g sample of washing soda is heated to 125 degrees celcius, all the... |
Nov. 22, 2009 |
| $1.00 | Unanswered | General Chemistry | help me someone please
help me someone please i need help balancing this equation H2+Ca(CN)2+NaAlF4+FeSO4+MgSiO3+KI+H3PO4PbCrO4+BrCl+CF2CL2+SO2 = PbBr2+CrCl3+MgCO3+KAl(OH)4+Fe(SCN)3+PI3+NaSiO3+CaF2+H2O |
Nov. 22, 2009 |
| $4.00 | Unanswered | General Chemistry | Foundation chemistry Chem1
Hi an thanks for the orportunity, my question is For As chemistry. A sample of metal silver has the relative atomic mass of 107.9 and exists as two isotopes. In this sample, 54.0% of the silver... |
Nov. 21, 2009 |
| $30.00 | Unanswered | Physical Chemistry | 1. If equal vo
1. If equal volumes of 0.004 M Pb(NO3)2(aq) and 0.004 M KI(aq) are mixed, what reaction, if any, occurs? The value of Ksp for PbI2 is 1.4 × 10–8. A) The solution turns... |
Nov. 21, 2009 |
| $1.00 | Unanswered | General Chemistry | How is titration in college laborotries
How is titration in college laborotries different to one in industry? need help and long explanation about 500 words thanks. |
Nov. 21, 2009 |
| $1.00 | Unanswered | General Chemistry | How is titration in college laborotries
How is titration in college laborotries different to one in industry? need help and long explanation about 500 words thanks. |
Nov. 21, 2009 |
| $1.00 | Answered | General Chemistry | home work of chemistry general 1010 course
the reaction HCl(aq) + KOH(aq) + H2)(l) + KCl(aq) is a (n) a) Preciptation B)acid-based C)Oxidation-reduction D)Single-replacement E)none of the above |
Nov. 21, 2009 |
| $1.00 | Answered | General Chemistry | chemistry help
my son is in chemistry in high school. could not help him understand this problem. please help if possible. Iron is obtained commercially by the reaction of hematite (Fe2O3) with carbon... |
Nov. 20, 2009 |
| $1.00 | Answered | General Chemistry | totally lost
define enthalpy of formation and enthalpy of reaction |
Nov. 20, 2009 |
