When reacting chemicals together we may need to know what mass of each reactant to use so that they react exactly and there is no waste. To calculate this we need to know the chemical equation. This shows us the ratio of moles of the reactants and products – thestoichiometryof the equ...
reasonisthatthenumberislinkedtothestandardusedformeasuringrelativeatomicmass–canyourememberwhatthatwas?isotopecarbon-12.The A moleistheamountofanysubstancecontainingasmanyparticlesasthereareatomsinexactly12gramsofthecarbon-12isotope.Thereare6.02x1023atomsinexactly12gofcarbon-12.Thisnumberissometimes...
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For example helium has an atomic mass of 4.0026. That was obtained by adding the amount of protons and neutrons in a helium atom together. On... Mr_Bojingles Thread Jul 3, 2007 Tags Atomic Moles Replies: 5 Forum: ChemistryU Homework: CO2 Volume, Pressure, Temperature, and Moles ...
Calculating Moles of H2X and Mr of H2X in Reaction with NaOH (a) An acid, HX, reacts with sodium hydroxide as shown in the equation below: H2X(aq) + 2NaOH(aq) ---> 2Na+(aq) + X2-(aq) + 2H2O A solution of this acid was prepared by dissolving 1.92 g of H2X in water and...
Since the ionic equation shows 5 moles, than we multiply by 5...and we get the number of moles of Fe2+ in 10cm3 of solution. Then we x by 10 to get the number of moles in 100cm3 of solution, right? Logged Borek Mr. pH Administrator Deity Member Posts: 27895 Mole Snacks: +...