1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
allsm [11]
3 years ago
7

The combustion reaction described in part (b) occurred in a closed room containing 5.56 10g of air

Chemistry
1 answer:
ziro4ka [17]3 years ago
4 0

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

You might be interested in
How much force is needed to accelerate a 66 kg skier at 2 m/sec2
alexgriva [62]

Answer:

132N

Explanation:

F=ma

F=66×2

F=132N

7 0
3 years ago
Several properties of water are shown. Classify each property as a physical property or a chemical property.
34kurt

Chemical property:

  • Can be split into hydrogen and oxygen
  • Reacts with certain metals

Physical property:

  • Is liquid at room temperature
  • Has a density of 1.0 g/cm³
7 0
2 years ago
Chlorine is used by textile manufacturers to bleach cloth. Excess chlorine is destroyed by its reaction with sodium thiosulfate,
harina [27]
Na2S2O3(aq) + 4Cl2( g) + 5H2O = 2NaHSO4(aq) + 8HCl(aq)

1)How many moles of HCl can form from 0.21 mol of Cl2?
0.21 mol Cl2 ( 8 mol HCl / 4 mol Cl2 ) = 0.42 mol HCl

2)How many moles of H2O are required for the reaction of 0.18 mol of Cl2?
0.18 mol Cl2 ( 5 mol H2O / 4 mol Cl2 ) = 0.225 mol H2O

3)How many moles of H2O react if 0.50 mol HCl is formed?
0.50 mol HCl ( 5 mol H2O / 8 mol HCl ) = 0.3125 mol H2O
6 0
3 years ago
Do simple molecules conduct electricity? and why?
ira [324]
Yes they have electrons
7 0
3 years ago
What would be the new volume if the pressure on 600ml. is increased from 90kpa to 150kpa​
dmitriy555 [2]
Mmgghjtdxj Rodney Ltd just ktdjlh
4 0
3 years ago
Other questions:
  • Put this in scientific notation. 10 m to centimeters and 37.5 g/mL to kg/L
    15·2 answers
  • How many protons are in an ion with 36 electrons and a –1 charge?
    9·1 answer
  • Does electricity flow from negative to positive right
    13·2 answers
  • Which of the following correctly describes the result of a voltage difference?
    13·1 answer
  • How many valence electrons are in an atom of bromine?
    8·1 answer
  • State two things you notice about a metal when being touched
    10·1 answer
  • 24 POINTS!!!!!!!
    11·2 answers
  • Lee is in customer service. How can she best support her internal customer, Dan? O al Prioritize other tasks and customers O b)
    12·1 answer
  • Why ions move and in which direction they move in the presence of an electric field created between two electrodes having opposi
    7·1 answer
  • What is the chemical formula for acetic acid?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!