I KNOW THIS
Pure water boils at a temperature of 212°F at which of the following standard conditions?
14.696 psia
Heat that changes the temperature of a substance is called ____________________ heat.
sensible
How many Btus are required to change one pound of ice at 20°F to steam at 220°F?
a.
1,304 Btu
A Bourdon tube is often found in a(n) ____.
pressure gauge
. Water at 0°F has no heat energy or molecular activity.
FALSE
- 460 F DEGREES
The temperature on the Fahrenheit scale where all molecular biology activity stops is _
PSIA at sea level under standard conditions is ____________________.
14.696 psi
As the temperature of a material increases
the molecules in the material
travel faster
PSIG indicates ____.
pounds per square inch gauge pressure
Water boils at 212°C.
True
The two common temperature scales used by air conditioning and refrigeration technicians are called ____________________ and ____________________.
Fahrenheit, Celsius OR
Celsius, Fahrenheit
How many Btus are required to change five pounds of ice at 20°F to steam at 220°F?
6,520 Btu
How many Btus must be removed from one pound of water at 200°F for it to end up as ice at 30°F?
313 Btu
he amount of heat needed to change the temperature of a substance will vary with the type of substance. This heat quality is called the ____ of the substance.
specific heat
The Fahrenheit scale is used in the English measurement system by the United States.
TRUE
The Fahrenheit absolute scale is called the ____________________ scale.
Rankine
-273°C DEGREES
The temperature on the Celsius scale where all molecular activity stops is ____.
The Celsius equivalent of 80°F is ____.
26.7°C
29.92 in. Hg
What is The standard atmospheric pressure at sea level?
Temperature difference does not affect heat transfer rate.
FALSE
The Celsius absolute scale is called the ____________________ scale.
Kelvin
How many Btus are required to change one pound of ice at 20°F to steam at 220°F?
1,304 Btu
In ____________________ heat or hidden heat, heat is known to be added, but no temperature rise is noticed.
latent
. Earth’s atmosphere exerts a weight or pressure of ____________________ psi at sea level.
14.696
The difference in the volume of two substances will determine the heat transfer rate between the substances.
FALSE