Combustion

Question 1

What does combustion usually include?

Answer 1

halocarbons

Question 2

What do combustion reactions always release?

Answer 2

CO2 and water

Question 3

What does coal contain?

Answer 3

sulfur

Question 4

Why is coal harmful?

Answer 4

it forms sulfuric acid

Question 5

What does sulfur mixed with water form?

Answer 5

acid rain

Question 6

What are the energy components of natural gas composition?

Answer 6

methane, ethane, propane, butane, condensates

Question 7

What are the non-energy components of natural gas composition?

Answer 7

nitrogen, carbon dioxide, hydrogen sulfide, helium

Question 8

How many carbons and hydrogens are in methane?

Answer 8

1 C
4 H

Question 9

How many carbons and hydrogens are in ethane?

Answer 9

2 C
6 H

Question 10

How many carbons and hydrogens are in propane?

Answer 10

3 C
8 H

Question 11

How many carbons and hydrogens are in butane?

Answer 11

4 C
10 H

Question 12

What is the (approximate) coal combustion reaction?

Answer 12

C + O2 –> CO2 + H2O+ energy

Question 13

What is the (approximate) natural gas combustion reaction?

Answer 13

CH4 + O2 –> CO2 + H2O + energy

Question 14

What is a combustion reaction called?

Answer 14

oxidation

Question 15

What do methane and oxygen form when they react?

Answer 15

CO2 and water

Question 16

What are the units of coefficients in balance chemical equations?

Answer 16

moles

Question 17

What is Avogadro’s number?

Answer 17

6.022 x 10^23 atoms

Question 18

What is a practical mole?

Answer 18

one mole of any element is equal to the mass number of the element in grams