The Andes was the mountain range that formed as a result of plate motion around the Ring of Fire.
Answer: The Andes
Answer:
KNO₃ → 1 mol of K⁺ ; 1 mol of nitrate (1 mol of oxygen + 3 mol of nitrogen)
Na₂SO₄ → 2 mol of Na⁺ ; 1 mol of sulfate ( 1 mol of sulfur + 4 mol of oxygen)
Ca(OH)₂ → 1 mol of calcium; 2 moles of hydroxide
(NH₄)₂SO₃ → 2 mol of ammonium; 2 mol of sulfite (1 mol of sulfur + 3 mol of oxygen)
Ca₃(PO₄)₂ → 3 mol of calcium: 2 mol of phosphate (1 mol of phosphorus + 4 mol of oxygen)
Al₂(CrO₄)₃ → 2 mol of aluminum ; 3 mol of cromate (1 mol of Cr + 4 mol of oxygen)
Explanation:
Let's verify all the dissociations:
KNO₃ → K⁺ + NO₃⁻
Na₂SO₄ → 2Na⁺ + SO₄⁻²
Ca(OH)₂ → Ca²⁺ + 2OH⁻
(NH₄)₂SO₃ → 2NH₄⁺ + 2SO₃⁻²
Ca₃(PO₄)₂ → 3Ca²⁺ + 2PO₄⁻³
Al₂(CrO₄)₃ → 2Al³⁺ + 3CrO₄⁻²
Answer:
The final temperature of the mixture is 22.3°C
Explanation:
Assuming that the 120 g substance at 80°C is water, final temperature of the mixture can be determined using the formula:
Heat lost = Heat gained
Heat = mc∆T where m is mass, c is specific heat capacity of water, and ∆T is the temperature change =<em> Tfinal - Tinitial</em>.
Let the final temperature be T
Heat lost = 120 × c × (T - 80)
Heat gained = 3000 × c × ( T - 20)
Equating the heat lost and heat gained
120 × c × -(T - 80) = 3000 × c × (T - 20)
9600 - 120T = 3000T - 60000
60000 + 9600 = 3000T + 120T
69600 = 3120T
T = 69600/3120
T = 22.3°C
Therefore, the final temperature of the mixture is 22.3°C