An amount of nitrogen undergoes a physical change and increases its volume. what can be known about this physical change?

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

How many moles of co2 are produced during the complete combustion of 3.6 moles of c2h6

An alpha particle is: a hydrogen atom a nucleus of helium two neutrons an electron