แผ่นงานStoichiometry
คำถามทั้งหมด: 15
1 N2 + 3 H2 → 2NH3
How many moles of hydrogen, H2, are needed to react with 2.00 mol of nitrogen, N2?
(a) mol N2 ÷ (b) mol N2 x (c) mol H2 = (d) mol H2
2H2 + O2 → 2H2O
How many moles of water, H2O, can be produced if 8.00 moles of H2 are used? (Show your work and answer)
3 Mg + 1 Fe2O3 → 3 MgO + 2 Fe
Identify the mole ratios for the following pairs:
(a) Mg : (b) Fe
(c) Fe2O3 : (d) Fe
1 Fe2O3 : (e) MgO
1 Cl2 + 2 KBr → 1 Br2 + 2 KCl
How many grams of potassium chloride (KCl) can be produced from 356 g of potassium bromide (KBr)?
(a) + 35 = 74g x 2 = 148g 39 + 80 = (b) g x 2 = 238g
(c) / (d) x 148 = (e) g
1 CH4 + 2 O2 → 1 CO2 + 2 H2O
How many moles of carbon dioxide (CO2) are produced from the combustion of 110.0 g of CH4 (molar mass = 16 g)?
13.7 mol
2.75 mol
6.85 mol
6.11 mol
1 B2H5 + 3 O2 → 2 HBO2 + 2 H2O
What mass of O2 will be needed to burn 36.1 g of B2H5?
16 x 2 = (a) x 3 = 96 g (11 x 2) + (1 x 5) = 27 g
(b) / (c) x (d) = (e) g
Balance the following reaction:
(a) CaC2 + (b) H2O → (c) C2H2 + (d) Ca(OH)2
1 Fe2O3 + 3H2 → 2 Fe + 3 H2O
How many moles of iron (Fe) can be made from 3.0 moles of Fe2O3?
(a) / (b) x (c) = (d) mol Fe
4 Al + 3 O2 → 2 Al2O3
How much mass of aluminum (Al) would be needed to completely react with 45.00 g of oxygen (O2)?
(a) x 4 = 108 g 16 x 6 = 96 g
(b) ÷ (c) x (d) = (e) g
2 Al + 3 H2SO4 → 1 Al2(SO4)3 + 3 H2
How many grams of aluminum sulfate (Al2(SO4)3) would be formed if 250.0 g sulfuric acid (H2SO4) completely reacted with aluminum?
(27x2) + ( (a) x3) + (16x12) = 342 g (1x6) + (32x3) + (16x12) = 294 g
(b) ÷ (c) x (d) = (e) g
Balance the following reaction:
(a) NaI + (b) Pb(SO4)2 → (c) PbI4 + (d) Na2SO4
Balance the following reaction:
(a) C + (b) H2 → (c) C3H8
How many moles of calcium carbonate (CaCO3) are required to prepare 45.5 g of
calcium oxide (CaO)?
1 CaCO3 → 1 CaO + 1 CO2
(a) + 16 = (b) g
(c) ÷ 56 x (d) = (e) mol
Balance the following reaction:
_Al2O3 → _Al + _O2
2
4
3
2 Al2O3 → 4 Al + 3 O2
Calculate the moles of aluminum (Al) from 5.00 mol of aluminum oxide (Al2O3).
7.5 mol
10 mol
2.5 mol
4 mol
แป้นคำตอบStoichiometry
คำถามทั้งหมด: 15
8÷2×2=8
6.85 mol
10 mol