SCI 200 midterm 1 questions
and answers
why is energy important (5 things) - answer plays a
role in every human endeavor
responsible for standard of living, economic well
being, our existence
would not function as modern society without
energy
we can't grow economically without greater
amounts of energy or more efficient use of energy
fundamental to our future
variety of energy resources - answer fossil fuels
coal
nuclear
renewable resouces
,examples of fossil fuels - answer oil, natural gas,
synthetic fuels
what is the definition of energy - answer W = F * d
units of energy and work - answer kg*m^2/sec^2 =
Nm = joules
what is the definition of power - answer P = E/t
units of power - answer Joule/second = watt = W
how to determine energy consumption - answer
power * time = kW-h
What are the physical laws of importance - answer
conservation of mass
first law of thermodynamics - conservation of
energy
second law of thermodynamics - entropy
,what is conservation of mass - answer mass can
neither be created nor destroyed but simply
changed from one form to another
what is the first law of thermodynamics - answer
conservation of energy - the total amount of
energy in nature is constant
what is the second law of thermodynamics -
answer entropy
efficiency = W/Q2
conservation of mass (3 things) - answer
determination of CO2 emissions
limits to conservation processes
mass balance
mass balance 3 things - answer extraction
efficiency
energy balances
, elemental balances
conservation of energy (4 things) - answer heat of
combustion
heat of hydrogenation
heat of formation
hess's law (law of constant heat summation)
heat of combustion - answer organic compounds
containing only C, H and O can be burnt in oxygen
to yield only CO2 and H2O
heat of hydrogenation - answer the change in heat
content when 1 mole of unsaturated hydrocarbon
is converted to the saturated compound by
gaseous hydrogen
heat of formation - answer the change in heat
content when 1 mole of a substance is formed from
its elements
and answers
why is energy important (5 things) - answer plays a
role in every human endeavor
responsible for standard of living, economic well
being, our existence
would not function as modern society without
energy
we can't grow economically without greater
amounts of energy or more efficient use of energy
fundamental to our future
variety of energy resources - answer fossil fuels
coal
nuclear
renewable resouces
,examples of fossil fuels - answer oil, natural gas,
synthetic fuels
what is the definition of energy - answer W = F * d
units of energy and work - answer kg*m^2/sec^2 =
Nm = joules
what is the definition of power - answer P = E/t
units of power - answer Joule/second = watt = W
how to determine energy consumption - answer
power * time = kW-h
What are the physical laws of importance - answer
conservation of mass
first law of thermodynamics - conservation of
energy
second law of thermodynamics - entropy
,what is conservation of mass - answer mass can
neither be created nor destroyed but simply
changed from one form to another
what is the first law of thermodynamics - answer
conservation of energy - the total amount of
energy in nature is constant
what is the second law of thermodynamics -
answer entropy
efficiency = W/Q2
conservation of mass (3 things) - answer
determination of CO2 emissions
limits to conservation processes
mass balance
mass balance 3 things - answer extraction
efficiency
energy balances
, elemental balances
conservation of energy (4 things) - answer heat of
combustion
heat of hydrogenation
heat of formation
hess's law (law of constant heat summation)
heat of combustion - answer organic compounds
containing only C, H and O can be burnt in oxygen
to yield only CO2 and H2O
heat of hydrogenation - answer the change in heat
content when 1 mole of unsaturated hydrocarbon
is converted to the saturated compound by
gaseous hydrogen
heat of formation - answer the change in heat
content when 1 mole of a substance is formed from
its elements
