Plz can someone help with this I don't understand how the answer is 3000dm3
Thanks

Answers

Answer 1

Answer: Combustion of octane is:
C8H18 + 25/2O2 -> 9H2O + 8CO2

You are given 10 moles of octane and you are required to find the volume of octane

10 moles C8H18 (25/2 moles O2/ 1 mole C8H18) = 125 moles O2

V = 125 moles O2 ( 24 dm3 / 1 mole of gas)
V = 3000 dm3

Related Questions

Eric notices that his flashlight does not turn on when he flips the switch. What is the least appropriate hypothesis for Eric to make?
Select all that apply. Organic compounds must contain: hydrogen carbon oxygen nitrogen
Gases and liquids will both expand to fill their container true or faulse
Given the parent compound, give the mass fragment that is evident in m/z 71. Include any hydrogen atoms and the charge.
What is the chemical symbol for gold?

Which choice below would affect the rate of reaction in the opposite way from the other four? a. Cool the reaction down
b. Add a catalyst
c. Decrease the pressure
d. Use larger pieces of solid reactants
e. Decrease the concentration of the reactants

Answers

Adding a catalyst as this would speed up the reaction and the rest would slow it down

12. Which classification describes the Milky Way? regular spiral barred spiral elliptical irregular

Answers

the milky way is a spiral galaxy with 2 central arms

Where does oxidation occur in an electrochemical cell?(1) at the cathode in both an electrolytic cell and a voltaic cell
(2) at the cathode in an electrolytic cell and at the anode in a voltaic cell
(3) at the anode in both an electrolytic cell and a voltaic cell
(4) at the anode in an electrolytic cell and at the cathode in a voltaic cell

Answers

Option No. 1 at the cathode in both an electrolytic cell and a voltaic cell

Negative ion arrives at the anode, attracted by electrostatic forces, where they lose electrons. Loss of electrons is defined as oxidation.

The reverse process occur at the negative electrode, where positive ions pick up electrons. They are reduced.

Answer : The correct option is, (3) at the anode in both an electrolytic cell and a voltaic cell.

Explanation :

As we know that there are two types of cell which are, electrolytic cell and electrochemical cell or galvanic cell.

Electrolytic cell : It is defined as the cell in which the chemical reaction occurs by passing of the current from external source.

In this electrolytic cell, the oxidation occurs at anode which is a positive electrode and reduction occurs at cathode which is a negative electrode.

Electrochemical cell : It is defined as the cell in which the chemical reaction occurs with the production of electric potential difference between the two electrodes. It is also known as voltaic cell.

In this cell, the oxidation occurs at anode which is a negative electrode and reduction occurs at cathode which is a positive electrode.

From this we conclude that, the oxidation occurs at the anode in both an electrolytic cell and a voltaic cell.

Hence, the correct option is, (3) at the anode in both an electrolytic cell and a voltaic cell.

Which of the following is not an example of an extensive physical property?A.) Mass
B.) Shape
C.) Color
D.) Volume

Answers

The correct answer is C. Color is not an extensive property because it does not depends on the amount. An extensive property is a property that is dependent on the amount of substance being measured. The opposite is called intensive property where it does not depend on the amount.

. . .. . . . .. . . . . .. . . . . .
The correct answer is C.

What is the most common salt found in ocean water?

Answers

Hello.

The answer i believe would be sodium.

Have a great day.

What is the complete ionic equation for this reaction?2KOH(aq) + H2SO4(aq) → 2H20(1) + K2SO4(aq)
O A. 2K+ + OH + H2SO4 → OH + 2H+ + K2SO4
B. OH + 2H+ + 2H20()
C. 2KOH + H2SO4 → 2H20 + K2SO4
D. 2K+ + OH + 2H+ + SO42- → 2H20() + 2K+ + SO42-
SUBMIT

Answers

Answer:

The answer is "Option D".

Explanation:

The entire ionic equation for all the substances, which are ionic compounds but are available in an aquatic is represented in the form with ions in the full ionic equation.

In the Net ionic equation, it doesn't have the particulate matter throughout the net ionic equations throughout the equations.

In the Spectator ions, it doesn't participate in interactions mostly on reaction and the material hand. From both sides, the very same ions are present.

The evenly balanced chemical formula is,

$2KOH (aq)+ H_2SO_4(aq) \longrightarrow 2H_2O(l) + K_2SO_4$

It is the separate organic compound that full ion formula will match the choice D.

Final answer:

The complete ionic equation for the reaction is 2K+ + 2OH- + 2H+ + SO42- → 2H2O + 2K+ + SO42-.

Explanation:

The complete ionic equation for the reaction 2KOH(aq) + H2SO4(aq) → 2H20(l) + K2SO4(aq) is:

2K+ + 2 OH- + 2 H+ + SO42- → 2 H2O(l) + 2 K+ + SO42-

The equation is balanced in terms of mass and charge by adding spectator ions (K+ and SO42-). The net ionic equation can be obtained by eliminating the spectator ions, leaving only the species that undergo a chemical change.