Answer:
The final volume when pressure is changed is 126.1mL
Explanation:
Based on Boyle's law, in a gas the volume is inversely proportional to its pressure when temperature remains constant. The equation is:
P₁V₁ = P₂V₂
<em>Where P is pressure and V volume of 1, intial state and 2, final state.</em>
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Computing the values of the problem:
350mmHg*200mL = 555mmHgV₂
126.1mmHg = V₂
<h3>The final volume when pressure is changed is 126.1mL</h3>
Data Given:
% w/w = 5 %
Solution weight = 1500 g
Solute weight = ?
Formula Used:
% w/w = (Mass of Solute / Mass of Solution) × 100
Solving for Mass of Solute,
Mass of Solute = (% w/w × Mass of Solution) ÷ 100
Mass of Solute = (5 × 1500 g) ÷ 100
Mass of Solute = 75 g K₂SO₄
I believe the answer is A. single-displacement
Answer:
0.36 N
Explanation:
Let's consider the neutralization between HBr and NaOH.
HBr + NaOH → NaBr + H₂O
The equivalents of NaOH that reacted are:
24.0 × 10⁻³ L × 1.5 eq/L = 0.036 eq
Since the reactions are equivalent to equivalent, also 0.036 equivalents of HBr reacted.
The normality of HBr is:
N = 0.036 eq / 0.100 L = 0.36 N
Na₂CO₃ → 2Na⁺ + CO₃²⁻
CO₃²⁻ + H₂O ⇄ HCO₃⁻ + OH⁻
HCO₃⁻ + H₂O ⇄ CO₂·H₂O + OH⁻
Na⁺, CO₃²⁻, HCO₃⁻, OH⁻
