Endothermic processes - Page 4
Questions
- Two iron bolts of equal mass one at 100° C, the other at 55°C are placed in an insulated container, assuming heat transfer is negilble, what is the final temperature of the container? (c of iron =0.450 j/g* °C)
- Why is dissolving potassium nitrate in water an endothermic process ?
- When #2# moles of water are produced, the following reaction has an enthalpy change of reaction equal to #-"184 kJ"#. How much water is produced when this reaction gives off #"1950 kJ"# of heat?
- What is the final temperature of water if it used 520 J from 52 degrees C?
- 10.0g of a metal, initially at 25 Celsius, are placed into 10.0 g of water, initially at 100 Celsius. Which metal will have the lowest final temperature? A) Aluminium (0.902 J/g*Celsius) B) Gold (0.129 J/g* Celsius) C) Copper (0.385 J/g*Cesius)