What does the crystalline structure of metals resemble?
1 answer:
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Answer:
Therefore, the amount of heat produced by the reaction of 42.8 g S = <u>(-5.2965 × 10²) kJ = (-5.2965 × 10⁵) J</u>
Explanation:
Given reaction: 2S + 3O₂ → 2 SO₃
Given: The enthalpy of reaction: ΔH = - 792 kJ
Given mass of S: w₂ = 42.8 g, Molar mass of S: m = 32 g/mol
In the given reaction, the number of moles of S reacting: n = 2
As, Number of moles:
∴ mass of S in 2 moles of S:
<em>Given reaction</em>: 2S + 3O₂ → 2 SO₃
<em>In this reaction, the limiting reagent is S</em>
⇒ 2 moles S produces (- 792 kJ) heat.
or, 64 g of S produces (- 792 kJ) heat.
∴ 42.8 g of S produces (x) amount of heat
⇒ <u><em>The amount of heat produced by 42.8 g S:</em></u>
<u>Therefore, the amount of heat produced by the reaction of 42.8 g S = (-5.2965 × 10²) kJ = (-5.2965 × 10⁵) J</u>
Answer:
Explanation:
Given :
Mass of a bar of lead = 115.2 g
Initial water level = 25 mL
Final water level = 35.5 mL
Difference in the water level = 35.5 - 25
= 10.5 mL
=
We know that when a body is submerged in water, it displaces its own volume of water.
Therefore, the volume of the lead bar = volume of the water displaced = 10.5 mL =
We know that mathematically, density is the ratio of mass of body to its volume.
Density of the lead bar is given by :
=