Answer :
Answer:
The answer to your question is 159.0 grams
Explanation:
data
mass of K₂O = ?
mass of K = 132 g
Process
1.- Balance the chemical reaction
Chemical reaction
K(s) + O₂ ⇒ K₂O
Reactants Elements Products
1 K 2
2 O 1
This reaction is unbalanced
4K(s) + O₂ ⇒ 2K₂O
Reactants Elements Products
4 K 4
2 O 2
Now the reaction is balanced
2.- Calculate the mass of K₂O
Atomic mass of K = 39 x 4 = 156 g
Molar mass of K₂O = 2[(39 x 2) + 16] = 188 g
156 g of K ------------------ 188 g of K₂O
132 g of K ----------------- x
x = (132 x 188) / 156
x = 159.0 grams
Answer:
159 grams of K2O can be produced
Explanation:
Step 1: Data given
Mass of potassium = 132 grams
Molar mass of potassium = 39.10 g/mol
Step 2: The balanced equation
4K(s) + O2(g) → 2K2O(s)
Step 3: Calculate moles K
Moles K = mass K / molar mass K
Moles K = 132.0 grams / 39.10 g/mol
Moles K = 3.376 moles
Step 4: Calculate moles K2O
For 4moles K we need 1 mol O2 to produce 2 moles K2O
For 3.376 moles K we'll have 3.376/2 = 1.688 moles K2O
Step 5: Calculate mass K2O
Mass K2O = moles K2O * molar mass K2O
Mass K2O = 1.688 moles * 94.2 g/mol
Mass K2O = 159 grams
159 grams of K2O can be produced