Waly Whacko claims to have invented a heat engine that will revolutionize industry. It runs between a hot source at 300oC and a cold sink at 25oC. He claims that his engine is 92%

(a) What error did he made in his choice of temperature scale? And

(b) What is the actual maximum efficiency of his engine?

Iron atoms have been detected in the suns atmosphere : Iron atoms have been detected in the sun's atmosphere, some withmany of their electrons stripped away. What is the net electriccharge (in coulombs) of an iron atom with 26 protons and 10electrons? |

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What is the actual maximum efficiency of his engine : Waly Whacko claims to have invented a heat engine that will revolutionize industry. It runs between a hot source at 300oC and a cold sink at 25oC. What is the actual maximum efficiency of his engine |

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## What is the new volume of the gas after it is heated4.3 moles of Hydrogen gas initially at Standard Temperature and Pressure. The gas is heated to a temperature of 49°C while being kept at constant pressure. What is the new volume of the gas after it is heated |

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