What is the order of the phases on a heating curve

What is the mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6