Thermodynamics category

Posted by Syeda Khizra Naqvi some time ago

2.6 Using the property values for refrigerant HFA 134a given in Table 2.5, calculate: (i) the specific enthalpy and specific volume of HFA 134a at -8

Posted by Ian Lockhart some time ago

Is this Video right link below

Posted by Anonymous some time ago

What is the first and second law of thermo dynamics?

Posted by RPD1223 some time ago

The density of air is 1.30g/l at standard conditions. Determine the mass of 3.0L of air at a pressure of 138.2 kPa and a temperature of 273 C. (New system STP is 101 kPa of pressure and 0C)

Posted by kanjalid some time ago

What is the difference between intensive and extensive properties?

Posted by anonymous some time ago

What is an easy to understand definition of hess' law?

Posted by Anonymous some time ago

If 2 cups of ice at room temperature began to melt, would the ice in the cup where the resulting water was drained (or drunk) melt faster than the ice in the cup that retained all the resulting water?

Posted by anonymous some time ago

What's the freezing point of anti-freeze?

Posted by Sir_judicator some time ago

Why does increasing pressure decrease the freezing point of a substance?

Posted by jason some time ago

Two things bother me, 1.Water freezes at 0 degree centigrade. 2.Ice melts at 0 degree centigrade. How come can both be true?

Posted by Anonymous some time ago

What is the largest living thing that has been frozen and brought back to life?

Posted by Kyle some time ago

How hot does the average wood stove temperature average

Posted by ninjax7 some time ago

The first law of thermodynamics states that energy can not be created or destroyed. so the universe must be eternal; yet we know its not (just ask stephen hawkings) how then can you explain this universe coming into being w/out breaking the first law?

Posted by Anonymous some time ago

Ten joules of heat energy are transferred to a sample of ideal gas at constant volume. As a result, the internal energy of the gas a) increases by more than 10J b) increases by less than 10J c) remains unchanged d) increases by 10J

Posted by Kornflapper some time ago

Wouldn't a 1000 watt refrigerator heat a room more efficiently than a 1000 watt electric heater? The refrigerator has effectively taken the cold from the room and locked it in an insulated box.

Posted by Tipalo some time ago

In the immediate vicinity of the state T0, v0, the volume of a particular system of 1 mole is observed to vary according to the relationship, v=v_0+a(T-T_0 )+b(p-p_0) Calculate the transfer of heat dQ to the system if the molar volume is changed by a small increment dv=v-v_0 at constant temperatureT_0

Posted by PetroleumEng some time ago

Petroleum Engineering Thermodynamics question i need HELP on!

Posted by Doomraider some time ago

Why can't microwave ovens "brown" food?

Posted by luke87 some time ago

If water boils at 100 degrees celcius why does water evaporate?

Posted by Anonymous some time ago

How does a room heater transforms heat through conduction,convection and radiation?

Posted by Mawgan some time ago

Why can't Absolute Zero be reached?

Posted by toodly1975 some time ago

What is thermal conductivity? What factors affect it?

Posted by the janitor some time ago

Can #2 fuel oil begin to vaporize if the vessel it contained in is pulled into a deep vacuum?

Posted by Munda some time ago

What is the meaning of pressure in system is same at all points?(in thermodynamics)

Posted by aboto zhimo some time ago

At what temperature does iron ore melt?

Posted by Anonymous some time ago

What effect would an increase in temperature have on the rate of diffusion? Why?

Posted by Satoshi i i some time ago

Why can't it get colder than absolute zero?

Posted by teejay some time ago

Which would require more heat, melting 500g of 0 degree C ice or turning 500g of 100 degree C water into steam?

Posted by kinkss some time ago

How is dissociation endothermic and hydration exothermic? Please explain in terms of kinetic and potential energy =)

Posted by gooong some time ago

Why is sand hotter than the water on the beach?

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