BIOPHYSICS CHAPTER 2 PT1 || WITH ERRORLESS SOLUTIONS 100%.
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BIOPHYSICS CHAPTER 2
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BIOPHYSICS CHAPTER 2
heat correct answers The energy transferred between objects that are at different temperatures by different mechanisms
Laws of Thermodynamics correct answers 0th law define temperature
1st law defines energy
zeroth law of thermodynamics correct answers A law that if two systems are separatel...
BIOPHYSICS CHAPTER 2 PT1 || WITH ERRORLESS
SOLUTIONS 100%.
heat correct answers The energy transferred between objects that are at different temperatures by
different mechanisms
Laws of Thermodynamics correct answers 0th law define temperature
1st law defines energy
zeroth law of thermodynamics correct answers A law that if two systems are separately found to
be in thermal equilibrium with a third system, the first two systems are in thermal equilibrium
with each other; that is, all three systems are at the same temperature. Also known as
thermodynamic equilibrium.
Thermal equilibrium correct answers When a hot object is placed in thermal contact with a cold
object, heat flows from the warmer to the cooler object. This continues until they are in thermal
equilibrium (the heat flow stops)
At thermal equilibrium the two objects have the same correct answers Temperature
0thLaw of thermodynamics and is made practical through the development of correct answers
Thermometers
The zeroth law help define the concept of correct answers Temperature
Temperature Scales correct answers Fahrenheit, Celsius, Kelvin
Celsius scale correct answers easiest temperature scale to be remembered
named in honor of the Swedish astronomer Anders Celsius (1701-1744)
difference between °C and C° correct answers T: °C while ΔT: C°
Fahrenheit scale correct answers developed by Gabriel Fahrenheit (1686-1736)
conversion between Celsius and Fahrenheit correct answers C = (F-32)x(5/9)
Kelvin scale correct answers a temperature scale that begins at absolute zero
named for the Scottish physicist William Thomson, Lord Kelvin (1824-1907)
Conversion between Celsius and Kelvin correct answers K=C+273
units for measuring heat correct answers calorie, joule and btu
one kilocalorie (kcal) correct answers amount of heat needed to raise the temperature of 1 kg of
water from 14.5 °C to 15.5 °C
, one calorie (cal) correct answers The amount of energy needed to raise the temperature of 1 gram
(1 mL) of water, by 1 degree Celsius.
Calorie, with capital C, used in describing the chemical energy content of foods, is actually a
correct answers kilocalorie
conversion from calorie to joule correct answers 1 cal= 4.186J
1 Cal= 4186J
British Thermal Unit (BTU) correct answers The amount of heat required to raise the
temperature of one pound of water by one degree Fahrenheit
conversion from btu to kcalorie to joule correct answers 1 Btu = 0.252 kcal = 1055 J
heat capacity correct answers the amount of heat necessary for a given temperature change
units for heat capacity correct answers joules per kelvin (J/K) or joules per Celsius degree (J/C°).
heat capacity C is always correct answers Positive
how can the heat capacity stay positive correct answers Q and ΔT have the same signs
heat capacity equation correct answers q=CΔT
If heat is added to the system correct answers Q and ΔT are positive
if heat is removed from the system correct answers Q and ΔT are negative
factors affecting heat capacity correct answers mass and type of material
specific heat capacity correct answers the energy required to raise the temperature of one gram of
a substance by one degree Celsius
units of specific heat capacity correct answers J/(kg.K) or J/(kg.Cº)
specific heat capacity equation correct answers q=mc∆T
which materials has the highest specific heat correct answers water
• Water has a large specific heat correct answers means that water can give off or take in large
quantities of heat with little change in temperature.
heat transfer correct answers the flow of thermal energy from higher temperature to lower
temperature
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