Which of the following conclusions can be made from experimental observations? a

Question

Which of the following conclusions can be made from experimental observations? a) Every clear liquid is colorless b) The ratio of nitrogen to oxygen in a particular molecule c) All sodium compounds, such as NaCl, are very reactive with water d) All chlorine compounds are green Recently the population of the planet exceeded 7 billion humans. This continued exponential population growth creates a large demand for energy. Which of the fossil fuel energy sources creates the least amount of the greenhouse gas carbon dioxide per energy generated? a) Coal (C) C + O2 --> CO2 (g) Delta H= -393.5 kJ b) All of the above produce the same amount of CO2 per energy produced c) Methane (CH4) CH4 + 2O2 --> CO2 (g) + H2O Delta H = -890.2 kJ d) Oil (CH2) CH2 + 1.5 O2 -->CO2 (9) + H2O Delta H = -658.7 kJ

Explanation / Answer

b

b

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