Limescale That Builds Up in Showers, Kettles, and Pipes Is $\rightarrow$

question 13

Multiple Choice

Limescale that builds up in showers, kettles, and pipes is often primarily composed of calcium carbonate.One limescale remover contains sulfamic acid (H₃NSO₃) , which can be considered to be a strong monoprotic acid.Which reaction summarizes the action of sulfamic acid on limescale?

• A)H ⁺ (aq)+ H₂NSO₃ ^- (aq) + CaCO₃ (s) \(\rightarrow\)HCO₃ ^- (aq) + HNSO3^{2 -} (aq) + Ca ⁺ (aq)
• B)3H ⁺ (aq) + NSO₃ ^- (aq) + CaCO₃ (s) \(\rightarrow\) Ca ^{2 +} (aq) + HSO₃ ^- (aq) + NO₂ (g) + CO₂ (g) +H₂O (l)
• C)2H ⁺ aq) +2 H₂NSO₃ ^- (aq) + CaCO₃ (s) \(\rightarrow\) CO₂ (g) +2 H₂NSO₃ ^- (aq) + Ca ^{2 +} (aq) +H₂O (l)
• D)3H ⁺ (aq) + NSO₃^{3 -} (aq) + CaCO₃ (s) \(\rightarrow\) Ca ^{2 +} (aq) + NSO₃^{3 -} (aq) + CO₂ (g) + 3 HNO₂ (aq)
• E)3H⁺(aq) + NSO₃ ^- (aq) + CaCO₃ (s) \(\rightarrow\) CaS(s) + HCN(g) +3H₂O(l)

Acquire knowledge about different bankruptcy processes and their implications.

Identify strategies to maintain and increase liquidity and cash availability in a firm.

Comprehend how effective group communication contributes to the success of entrepreneurial firms.

Recognize the impact of organizational morale on a company's performance and how it changes in troubled times.

---

Definitions:

Anxiety Attacks

Abrupt onset of intense fear or discomfort, where an individual may feel heart palpitations, dizziness, and panic, often without a clear trigger.

Major Depression

A psychiatric disorder characterized by persistent feelings of sadness, loss of interest, and a lack of pleasure in activities, severely impacting daily functioning.

Longitudinal Studies

Research studies that follow the same subjects over a period of time, noting development or changes.

Relapse

The return of behaviors or symptoms associated with a disorder or condition after a period of improvement or recovery.