Answer:
a. Solid
Explanation:
<em>Solid substances do not change size or shape according to their containers</em>. In other words, solid substances keep their size and shape.
<em>Liquid and gas substances take the shape of their container</em>, so any of them would be square-shaped when put in a square box, and they would be spherical shaped when put in a spherical container.
Answer:
Explanation:
Combustion reaction is given below,
C₂H₅OH(l) + 3O₂(g) ⇒ 2CO₂(g) + 3H₂O(g)
Provided that such a combustion has a normal enthalpy,
ΔH°rxn = -1270 kJ/mol
That would be 1 mol reacting to release of ethanol,
⇒ -1270 kJ of heat
Now,
0.383 Ethanol mol responds to release or unlock,
(c) Determine the final temperature of the air in the room after the combustion.
Given that :
specific heat c = 1.005 J/(g. °C)
m = 5.56 ×10⁴ g
Using the relation:
q = mcΔT
- 486.34 = 5.56 ×10⁴ × 1.005 × ΔT
ΔT= (486.34 × 1000 )/5.56×10⁴ × 1.005
ΔT= 836.88 °C
ΔT= T₂ - T₁
T₂ = ΔT + T₁
T₂ = 836.88 °C + 21.7°C
T₂ = 858.58 °C
Therefore, the final temperature of the air in the room after combustion is 858.58 °C
Answer: 0.910 moles NA+
Definition: of Like Decimal: Two or more decimal fractions are called like ... 0.910; 10.819; 89.637; 142.800 (b) 12.01; 180.3; 1446.105; 180.19
<span>291 & 2/3 dozen are in 3500 eggs</span>
