How to figure out if a reaction is exothermic or endothermic?

Gaseous ethane (CH,CH,) will react with gaseous oxygen (0,) to produce gaseous carbon dioxide (CO) and gaseous water (H2O). Supp

notka56 [123]

Answer:

0.00 g

Explanation:

We have the masses of two reactants, so this is a limiting reactant problem.

We will need a balanced equation with masses, moles, and molar masses of the compounds involved.

1. Gather all the information in one place with molar masses above the formulas and masses below them.

Mᵣ 30.07 32.00

2CH₃CH₃ + 7O₂ ⟶ 4CO₂ + 6H₂O

Mass/g: 1.50 11.

2. Calculate the moles of each reactant

$\text{moles of C$_{2}$H}_{6} = \text{1.50 g C$_{2}$H}_{6} \times \dfrac{\text{1 mol C$_{2}$H}_{6}}{\text{30.07 g C$_{2}$H}_{6}} = \text{0.04988 mol C$_{2}$H}_{6}\\\\\text{moles of O}_{2} = \text{11. g O}_{2} \times \dfrac{\text{1 mol O}_{2}}{\text{32.00 g O}_{2}} = \text{0.34 mol O}_{2}$

3. Calculate the moles of CO₂ we can obtain from each reactant

From ethane:

The molar ratio is 4 mol CO₂:2 mol C₂H₆

$\text{Moles of CO}_{2} = \text{0.04988 mol C$_{2}$H}_{6} \times \dfrac{\text{4 mol CO}_{2}}{\text{2 mol C$_{2}$H}_{6}} = \text{0.09976 mol CO}_{2}$

From oxygen:

The molar ratio is 4 mol CO₂:7 mol O₂

$\text{Moles of CO}_{2} = \text{0.34 mol O}_{2}\times \dfrac{\text{4 mol CO}_{2}}{\text{7 mol O}_{2}} = \text{0.20 mol CO}_{2}$

4. Identify the limiting and excess reactants

The limiting reactant is ethane, because it gives the smaller amount of CO₂.

The excess reactant is oxygen.

5. Mass of ethane left over.

Ethane is the limiting reactant. It will be completely used up.

The mass of ethane left over will be 0.00 g.

8 0

3 years ago

Tissues in the human body such as cardiac tissue are made up of?

Lynna [10]

Cardiac muscle tissues are made up of cardiac muscle cells or muscle fibers that give the distinct characteristics and function of the heart.

4 0

4 years ago

Read 2 more answers

18. give the product for the following reactions sequence. a) 3-pentanone b) 2-pentanone c) propanone d) 2-butanone e) methyl pr

serg [7]

The product for the following reaction are :

2 - butanone
CH₃CH₂COCl
CH₃CH₂CONHCH₃

T carboxylic acid is an organic compound. the functional group of carboxylic acid is carboxy. general formula is given as : R - COO⁻.

The reactions are given as follows :

1) the reduction of carboxylic acid into ketone with the organometallic compound is given as follows :

CH₃CH₂COOH + CH₃Li ------> CH₃CH₂COCH₃

2 butanone

2) the reaction of carboxylic acid with SOCl₂ is given as follows :

CH₃CH₂COOH + SOCl₂ -----> CH₃CH₂COCl

3) the reaction of carboxylic acid with CH₃NH₂ is given as follows

CH₃CH₂COOH + CH₃NH₂ -----> CH₃CH₂CONHCH₃

Thus, The product for the following reaction are :

2 - butanone
CH₃CH₂COCl
CH₃CH₂CONHCH₃

To learn more about carboxylic acid here

brainly.com/question/4721247

#SPJ4

5 0

1 year ago

What is the atomicity of ozone

faltersainse [42]

Answer:

Explanation:

Atomicity of an element is a measure of the total number of atoms present in a molecule. For example- O2 , O Similarly, an ozone molecule consists of 3 atoms of oxygen and has an atomicity of 3. The atomicity of ammonia is NH3.Ammonia is a compound of nitrogen and hydrogen with the formula NH3.

(Could very much be incorrect, it's just what I think it is.)

8 0

4 years ago

Stars with a greater overall mass are and , and they consume their nuclear fuel .

kozerog [31]

Answer:

they will expand

Explanation:

as they bring out they become red giants then eventually white dwarfs or the scarier options a black hole

4 0

3 years ago