All electro magnetic waves will travel the speed of a vacuum. the differences are negligible so the speed of light 3.00*10^8m/s
Waters freezing point in Celsius is 0 and 273.15 Kelvin (or 273 rounded to a whole number.
Answer:
335 Joules kJ of heat will be released
Explanation:
Given the balanced equation:
8 Al (s) + 3 Fe3O4 (s) ----------> 4 Al2O3 (s) + 9 Fe(s),
ΔH = -3350*KJ/mol rxn
This is the heat released when 8 moles of Al react with 3 mol Fe3O4.
We then need to calculate the moles of reactants, verify if there is a limiting reagent and proceed to answer the question based on the soichiometry of the reaction.
Atomic weight Al = 26.98 g/mol Molecular Weight Fe3O4 = 231.53 g/mol
mol Al = 47.6 g/26.98 g/mol = 1.76 mol
mol Fe3O4 = 69.12 g/ 231.53 g/mol = 0.30 mol
Limiting reagent calculation:
8 mol Al / 3 mol Fe3O4 x 0.30 mol Fe3O4 = 0.80 mol Al are required and we have 1.76 mol, therefore Fe3O4 is the limiting reagent
Amount of Heat
-3350 kJ/ 3 mol Fe3O4 x 0.30 mol Fe3O4 = -335.00 kJ
Answer:
a) blue vitriol: copper (II) sulfate pentahydrate, b) slaked lime: calcium hydroxide, c) oil of vitriol: Sulfuric acid, d) washing soda: sodium carbonate, e) muriatic acid: hydrochloric acid, f) epsom salt: magnesium sulfate, g) chalk: calcium carbonate, h) dry ice: carbon dioxide, o) baking soda: sodium bicarbonate, j) lye: sodium hydroxide.
Explanation:
Answer:
The answer is A. reactant
Explanation: