Chem for Engineers

Question 1

The reaction of a material with oxygen to provide oxides of all other elements as products releasing energy in the form of heat.

Answer 1

Combustion Reaction

Question 2

These are made up of elements that readily reacts with oxygen such as carbon and hydrogen. Examples: Propane, Butane

Answer 2

Fuels

Question 3

What law do we obey in Balancing chemical equations?

Answer 3

Law of Mass Conservation

Question 4

Amount of substance that contains as many elementary entities as there are atoms in exactly 12g of the carbon-12 isotope.

Answer 4

Mole (mol)

Question 5

This is the actual number of atoms in 12g of Carbon-12 isotope.

Answer 5

Avogadro’s number

Question 6

Avogadro’s number

Answer 6

6.0221413 × 10²³

Question 7

To solve for mole (mol):•

Answer 7

Given grams of elements × ( 1mol / molar mass )

Question 8

Solve for # of atoms in an elements:

Answer 8

Mol × ( Avogadro’s number / 1mol )

Question 10

Quantitative study of reactants and products in chemical reactions

Answer 10

Stoichiometry

Question 11

Decides how much product will be formed from the reaction

Answer 11

Limiting Reagent

Question 12

Boyle’s law and example

Answer 12

Inverse relationship between pressure and volume
Example: Pressing down syringe

Question 13

Charles’ law and example

Answer 13

direct relationship between volume and temperature
Example: hot air balloon

Question 14

Gay Lussac’s law

Answer 14

Direct relationship between pressure and temperature
Ex: fireworks explosion

Question 16

Combined gas laws

Answer 16

Relationship among Pressure, Volume, and temperature