vocabulary
Avogadro's constant
The mole ratio between Al2O3 and Fe3O4
4Al2O3 + 9Fe --> 3Fe3O4 + 8Al
What is 4 mol Al2O3 / 3 mol Fe3O4 ?
2Mg +O2 --> 2MgO
1.2 moles of Mg produces ___ moles of MgO.
What is 1.2?
2 NaOH + H2SO4 -->H2O + Na2SO4
200. grams NaOH forms ___ grams of Na2SO4
What is 355?
The percentage yield from the reaction actually produced 30g of product and the theoretical yield is 34g.
What is 88%?
A fraction that relates the amounts of moles of 2 substances involved in a chemical reaction.
What is mole ratio?
The ratio between H2 and NH3
3H2 + N2 --> 2NH3
What is 3 mol H2 / 2 mol NH3?
2 NH3 --> 3 H2 + N2
The moles of H2 formed from 0.145 moles of NH3.
What is 0.218 moles H2?
2KClO3 --> 2KCl + 3O2
Mass of KClO3 is needed to produce 2.50 grams of O2.
What is 6.38 g KClO3?
Cl2 + 2KBr --> 2KCl + Br2
Mass of KCl that can be produced from 300. g of each reactant. (Hint: first determine limiting reactant)
What is 188 g KCl?
The measured amount of product obtained in a lab after performing a chemical reaction.
What is experimental yield?
The ratio between H2 and N2
3H2 + N2 --> 2NH3
What is 3 mol H2 / 1 mol N2 ?
Mg + 2HCl --> MgCl2 + H2
2.50 moles of Mg reacts with ___ grams of HCl
What is 182?
Mg + 2HCl --> MgCl2 + H2
Mass of H2 produced from 75 g HCl
What is 1.02 g H2?
4 Al2O3 + 9 Fe --> 3 Fe3O4 + 8 Al
The limiting reactant when 5 moles of Al2O3 reacts with 7 moles of Fe. (Hint: focus on Al as the product)
What is iron (Fe)?
The reactant that is completely consumed in a reaction.
What is the limiting reagent?
The mole ratio between NH3 and N2
3H2 + N2 --> 2NH3
What is 2 mol NH3 / 1 mol N2?
4 Al + 3 O2 --> 2 Al2O3
Number of atoms of aluminum needed to react with 1.58 mol of O2.
What is 1.27x1024 atoms of aluminum?
(Hint: convert moles to particles)
2 Na + Cl2 --> 2 NaCl
Mass of NaCl produced from 24.7 g of Na.
What is 62.8 g NaCl?
CuCl2 + 2 NaNO3 --> Cu(NO3)2 +2 NaCl
The theoretical mass of NaCl when 15. g CuCl2 react with 20. g NaNO3. (Hint: first determine limiting reactant)
What is 13.8 g NaCl?
The reactant that remains unreacted in the reaction flask
What is excess reagent?
The mole ratio between Fe3O4 and Fe
4 Al2O3 + 9 Fe --> 3 Fe3O4 + 8Al
What is 1 mol Fe3O4 / 3 mol Fe?
CO2 + 2LiOH --> Li2CO3 + H2O
880 grams of CO2 reacts with ___ moles of LiOH.
What is 40.0?
2KClO3 --> 2KCl + 3O2
5.00 g of KClO3 produces ___ grams of KCl.
What is 3.04?
4 Al2O3 + 9 Fe --> 3 Fe3O4 + 8 Al
The mass of Al produced when 5.0 moles of aluminum oxide react with 7.0 moles of iron. (Hint: first determine limiting reactant)
What is 168 g Al?