Wordle
This number equaling 6.02x1023 represents the amount of particles/atoms/molecules in a mole.
What is Avogadro's number?
You are given: 13.5 mol Al2(CO3)3 and wanted that amount of grams.
3159 g
PbO + C → Pb + CO
89.06 grams of C are reacted with 24.48 grams of PbO, this is the limiting reactant. Work must be shown for credit!
What is PbO is the limiting reagent?
You are given 18.1 L argon at STP and want grams.
What is 32.28 g?
This is the formula for % yield.
This is a way to deal with the mass relationships of elements in compounds as well as reactants and products.
What is stoichiometry?
This is the percent composition by mass of strontium in SrO.
What is 84.56% Sr?
Ca + 2 H2O → Ca(OH)2 + H2
7.8 × 1023 particles of H2O are reacted with 1.615 moles of Ca. This is the excess reactant. Work must be shown for credit!
What is H2O is the limiting reagent?
You are given: 6.76 x 1020 particles of silver carbonate and want liters at STP.
0.02515 L at STP
Cu2O + O2 → CuO
15.63 grams of CuO are produced, 21.54 grams of Cu2O were reacted. This is the percent yield of this reaction.
Correct answer is 65.27%
• 100% yield would give 23.95 grams CuO
This is the definition of the mole ratio/bridge.
What is a conversion factor that relates the amounts in moles of any two substances involved in a chemical reaction.
You are given: 12.8 g manganese (II) sulfate and want it in particles.
5.103 x 1022 particles
3 Mg + N2 → Mg3N2
0.3557 moles of Mg are reacted with 3.9817 moles of N2, this is how many grams of Mg3N2 will be produced.
What is 11.97 grams Mg3N2?
4 NH3 + 6 NO → 5 N2 + 6 H2O
49.841 liters of NO are reacted, this is how many liters of NH3 will also be reacted at STP.
What is 33.227 liters NH3?
SiO2 + 2 C → Si + 2 CO
When 0.5171 moles of C are reacted, 0.1313 moles of Si are produced. This is the percent yield of this reaction.
Correct answer is 50.78%
• 100% yield would give 0.2586 moles Si
This is the amount of product you get in an experiment.
What is the actual/theoretical yield?
This is the percent composition by mass of each element in potassium phosphate.
What is
55.26% K
14.59% P
30.15% O ?
2 Dy + 3 F2 → 2 DyF3
1.8 × 1025 particles of Dy are reacted with 9.0 × 1023 particles of F2, this is how many moles of DyF3 will be produced.
What is 1.0 moles DyF3?
2 Ca + O2 → 2 CaO
19.637 liters of O2 are reacted at STP, this is how many particles of Ca will also be reacted.
Correct answer is 1.0555 × 1024 particles Ca
2 HI + Sr(OH)2 → SrI2 + 2 H2O
When 210.62 grams of SrI2 are produced, 4.3046 × 1023 particles of Sr(OH)2 were reacted. This is the percent yield of this reaction.
Correct answer is 86.271%
• 100% yield would give 244.14 grams SrI2
This is the definition of Avogadro's Law.
What states that equal volumes of gases at the same temperature and pressure contain equal numbers of molecules?
4 Si2H3 + 11 O2 → 8 SiO2 + 6 H2O
9.3 × 1022 particles of O2 are reacted, this is how many grams of SiO2 that will be produced.
What is 6.8 grams SiO2?
Fe2O3 + H2SO4 → Fe2(SO4)3 + H2O
345.94 grams of H2SO4 are reacted with 176.33 grams of Fe2O3, this is how many grams of Fe2(SO4)3 will be produced.
What is 441.55 grams Fe2(SO4)3?
Balance!
CH3OH + O2 → CO2 + H2O
153.48 grams CO2 are produced. This is how many grams of CH3OH were reacted.
What is 111.74 grams CH3OH?
Al + Fe2O3 → Fe + Al2O3
23.32 grams Al and 167.57 grams Fe2O3 reacted to form 30.24 grams of Fe. This is the % yield.
Correct answer is 62.65%
• 100% yield would be 48.27 grams Fe
• Al is the limiting reagent