Archie needs to find the density of an intricately crafted crown, to see if it is pure gold. He has no trouble measuring the mass, but he doesn’t know what to do next. What should he do?

It needs to condinse in a preser chamber

the solar system used to have much dust particles option no d

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.