A mystery element is a solid at room temperature. When connect in a circuit to a lightbulb, the lightbulb did not light up. It broke into pieces when it was dropped. What type of element is it? Explain your reasoning.

organisms are more likely to be more preserved in mud than sand because mud is moist and wet, while sand is very dry.

the earth would become to overheated and everything alive on it will eventually die from overheating. plants will eventually die as well, water will evaporate, and it will be nothing but a hot planet without anything living on it.

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.

the answer is 0.8m.

by: nicholas