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| Here's the questions in Chemistry. Go get 'em! 1-20 of 3280 | 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 | help my daughters with 3d model of polonium atom and curium atom models
I have two chem. students, different grades/same teacher. They have to build a 3-D model, 1.of polonium atom, 2. curium atom. all characteristics must be exact according to the periodictable. The... |
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 | equations
how do you balance equations such as Mg + O2? |
Nov. 23, 2009 |
| $0.25 | Answered | General Chemistry | formula
whats the formula for calcium permanganate? |
Nov. 23, 2009 |
| $0.25 | Answered | General Chemistry | .....
whih instrument would you use to dehydrate a substance through incineration? |
Nov. 23, 2009 |
| $0.25 | Unanswered | General Chemistry | standard international units
a graduated cylinder recorded a volume of 64.5mL of water before adding an irregular solid. after the irregular solid was immersed in the water, the water level changed to 75.9mL. The solids mass was... |
Nov. 23, 2009 |
| $0.25 | Answered | General Chemistry | international units
if a car travels at 35mi/hr, what is the velocity of the car in Km/hr? |
Nov. 23, 2009 |
| $0.25 | Answered | General Chemistry | international units
the speed of ligh is 2.99*10^8 m/sec, a ligh year is a unit of distance traveld by an object traveling at the speed of ligh for one year. how many miles is equivalent to a ligh year? |
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 | Answered | 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 |
