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
Mice21 [21]
3 years ago
13

I am so lost. Does anyone know how to do this??? Enthalpies of reaction stuff

Chemistry
1 answer:
Afina-wow [57]3 years ago
6 0

Answer:

-1464 kJ/mol

Explanation:

The balanced equation for the reaction is given as;

C2H4(g)+3O2(g)→2CO2(g)+2H2O(l) ΔH∘1=?

The enthalpy of the reaction is given by the equation;

Enthalpy of reaction = Enthalpy of products - Enthalpy of reactants

Products:

2CO2(g)+2H2O(l)

Enthalpy of Products = 2 (−394) + 2(−286)

Enthalpy of Products = -1360 kJ/mol

Reactants:

C2H4(g)+3O2(g)

Enthalpy of Reactants = 2 (52) + 3(0)

Enthalpy of Reactants = 104 kJ/mol

Enthalpy of Reaction =  -1360 - 104 = -1464 kJ/mol

You might be interested in
a. Compare the motion of the particles as a solid, liquid, and gas. b. What happens to the intermolecular bonds during phase cha
natta225 [31]
The answer A I’m positively absolutely
3 0
3 years ago
When an experimenter draws a conclusion that he assumes will apply to all situations set up similarly to his test situation, eve
frosja888 [35]

Before making any observations, deductive reasoning relies on the formulation of a hypothesis and its subsequent substantiation.

<h3>Deductive reasoning: What does it mean?</h3>

Since the sentence states that "he assumes will apply to all instances," he is suggesting something before to carrying out any observation, which is the foundation of deductive reasoning.

A conclusion in deductive reasoning is based on the agreement of several premises that are typically taken to be true. Sometimes, top-down logic is used to describe deductive reasoning. Making logical assumptions is the foundation of deductive reasoning, which then bases a conclusion on those assumptions.

The primary distinction between inductive and deductive thinking is that the former tries to develop a hypothesis, whilst the latter aims to test an existing theory. From specific observations, inductive reasoning proceeds to

To learn more about  deductive reasoning  refer to

brainly.com/question/3478823

#SPJ4

5 0
1 year ago
How many ozone particles are needed to form 24 particles of oxygen gas?
bearhunter [10]
First, you have to know the chemical formula of ozone and oxygen gas. Oxygen gas is O₂; it is one of the few gases that are diatomic in nature. The chemical formula of ozone is O₃. In oxygen gas, there are 2 particles of the oxygen element, while there are 3 particles for the ozone. There might be a slight difference but this induces a great difference in their properties. Oxygen is essential to living things because this is the gas that we breathe in. However, ozone is not safe to breathe in. It is a very strong oxidizing agent, almost 4 times as strong as the oxygen. Its main function is to block the UV rays from entering the Earth's atmosphere which can be harmful to our health.

Having known their chemical formula and properties, we know that an oxygen gas has 2 particles of oxygen element. So, if there are 24 particles of oxygen gas, that would mean 48 particles of the oxygen element. Since an ozone compound contains 3 particles of the oxygen element, then 48/3 = 16. It would take 16 particles of ozone to form 24 particles of the oxygen gas. 
6 0
3 years ago
Electricity generated from any source comes with its own advantages and disadvantages. So, no source of energy for generating el
irakobra [83]

Answer:

Wind energy

An ideal source of energy needs to be reliable, cost effective, safe and must lead to almost zero adverse environmental impact.

Wind energy is energy obtained from air moving at high velocity. This energy is harvested using windmills which convert mechanical energy to electrical energy.

Wind is inexpensive because it occurs naturally. However, a large expanse of land is required in order to mount sufficient number of windmills that will generate enough electrical energy for practical purposes.

This method of electricity generation is safe and does not lead to any environmental hazard unlike the burning of fossil fuels, use of nuclear energy or loss of habitat due to hydroelectric power generation.

Explanation:

6 0
3 years ago
A sample of Ar gas occupies a volume of 1.2 L at 125 degrees * C and a pressure of 10 atm. Determine the temperature , in degree
vekshin1

Answer:

58.64

Explanation:  You want to use the combined gas law equation (P1*V1)/(n1*T1)=(P2*V2)/(n2*T2). So first cross out what remains constant, so pressure and I assume moles (since it was not mentioned as a change). You want to change the temperature to Kelvin (always) to do work, then you can solve algebraically for the answer! Once you have your answer change it to Celsius since that's what you were asked for.

Hope this helped!

6 0
3 years ago
Other questions:
  • Write a nuclear equation for the formation of iron-54 through fusion
    13·2 answers
  • Determine the temperature change when a 100. g block of gold is supplied with 1.00 x 103 J of heat will give brainliest pls help
    13·1 answer
  • The mass of sample A is 100.0 g, then removed it from a graduated
    14·1 answer
  • According to the bohr model of the atom, where can atoms exist? where will they ot exist
    13·1 answer
  • What would happen if an aluminum wire were dipped dipped into a solution of tin (II) sulfate?
    11·1 answer
  • What are the three parts that make up Earth's mantle?
    5·1 answer
  • The molecular weight for the compound from the previous question is
    7·1 answer
  • Can you quess my Hogwarts house? Please explain why you think that and I will give brainliest
    13·1 answer
  • Two parts of the food chain are described below:
    9·2 answers
  • Which type of wave pushes the medium in the direction of the wave? *
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!