Balancing
Al + HCl → AlCl3 + H2
2Al+ 6HCl+2AlCl3+H2
2H2S+3O2→2SO2+2H2O (unbalanced)
What mass of oxygen gas is consumed in a reaction that produces 4.60 mol SO2?
221 g O2
Sn+2HF→SnF2+H2 (unbalanced)
How many moles of hydrogen fluoride are required to react completely with 75.0g of tin?
1.26 mol HF
Calculate the number of representative particles in 2.15 moles of gold
1.29 × 1024 atoms Au
P4O10 + H2O → H3PO4
P4O10 + 6H2O → 4H3PO4
CaC2+H2O->C2H2+Ca(OH)2 (balanced)
If 3.2 moles of CaC2 are consumed in this reaction, how many grams of water are needed?
1.2 x102 g H2O
3Mg+1Fe2O3->2Fe+3MgO (unbalanced)
How many mole of iron are produced with 25g of Mg?
0.69 mol Fe
Calculate the number of representative particles in 0.151 mole of nitrogen oxide
9.09 × 10 22 molecules NO
KClO3 → KClO4 + KCl
4KClO3 → 3KClO4 + KCl
Mg+HCl->MgCl2+H2 (balanced)
what is the mass of hydrogen gas when 4 moles of HCl is added to the reaction?
4 g HCl
NH4NO3->N2O+2H2O (unbalanced)
How many moles of water are produced with 45g of N2O?
2.0 mol H2O
How many formula units of AgNO3 are there in 3.25 mol AgNO3?
1.96 × 1024 formula units AgNO𝟑
C7H6O2 + O2 → CO2 + H2O
2C7H6O2 + 15O2 → 14CO2 + 6H2O
CaC2+2H2O->C2H2+Ca(OH)2 (unbalanced)
How many grams of Ca(OH)2 would be formed with 3.2 mol of CaC2
2.4 x 102 Ca(OH)2
2AlCl3 + 3H2O->Al2O3 + 6HCl (unbalanced)
How many moles of HCl will be produced when 249 g of AlCl3 are reacted?
5.6 mol HCl
Calculate the number of moles in 91.4 mol of carbon monoxide
5.50 × 1025 molecules carbon monoxide (CO)
Ca3(PO4)2 + SiO2 → P4O10 + CaSiO3
2Ca3(PO4)2 + 6SiO2 → P4O10 + 6CaSiO3
CH4 + 2O2 → CO2 + 2H2O (unbalanced)
What mass of CO2 is produced by the combustion of 1.00 mol of CH4?
44.0 g CO2
Ca + N2+ 3O2 → Ca(NO3)2 (unbalanced)
How many moles of O2 are needed to prepare 1.00 g of Ca(NO3)2?
0.0183 mol O2
Arrange these three samples from smallest to largest in terms of number of representative particles:
1.25 × 1025 atoms of zinc (Zn), 3.56 mol of iron (Fe), and 6.78 × 1022 molecules of glucose (C6H12O6).
From smallest to largest: 6.78 × 1022 molecules glucose, 2.14 × 1024 atoms Fe, 1.25 × 1025 atoms Zn.