Answer:
x = w/v
General Formulas and Concepts:
<u>Pre-Algebra</u>
Explanation:
<u>Step 1: Define</u>
v = w/x
<u>Step 2: Solve for </u><em><u>x</u></em>
- Multiply <em>x </em>on both sides: xv = w
- Divide <em>v</em> on both sides: x = w/v
367.279g should be your mass
Answer:
The answer to your question is False
Explanation:
Chemical reaction
4Br + K ⇒ 4BrK
Reactants Elements Products
4 Bromine 4
1 Potassium 4
This chemical reaction is unbalanced because the number of Potassium in the reactants is lower than the number of Potassium in the products.
Correct balanced reaction
Br₂ + 2K ⇒ 2KBr
Volume CO₂ produced := 33.85 L
<h3>Further explanation</h3>
Given
120.0 grams of butane
55.0 liters of oxygen
Required
Carbon dioxide produced
Solution
Reaction(combustion of Butane) :
2 C₄H₁₀ + 13 O₂ → 8 CO₂ + 10 H₂O.
mol of Butane (MW=58 g/mol) :
mol = mass : MW
mol = 120 : 58
mol = 2.069
At STP(1 atm, 273 K) , 1 mol gas=22.4 L, so for 55 L Oxygen :
mol O₂= 55 : 22.4 =2.455
Mol ratio of Butane and Oxygen = mol : reaction coefficient :
C₄H₁₀ : O₂ = 2.069/2 : 2.455/13 = 1.0345 : 0.189
Limiting reactant ⇒ O₂ (smaller ratio)
So mol CO₂ based on limiting reactant(O₂)
From equation, mol CO₂ : O₂ = 8 : 13, so mol CO₂ :
= 8/13 x mol O₂
= 8/13 x 2.455
= 1.511
Volume CO₂ at STP :
= 1.511 x 22.4 L
= 33.85 L
